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WO2019052148A1 - 载波选取的方法和通信设备 - Google Patents

载波选取的方法和通信设备 Download PDF

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Publication number
WO2019052148A1
WO2019052148A1 PCT/CN2018/080715 CN2018080715W WO2019052148A1 WO 2019052148 A1 WO2019052148 A1 WO 2019052148A1 CN 2018080715 W CN2018080715 W CN 2018080715W WO 2019052148 A1 WO2019052148 A1 WO 2019052148A1
Authority
WO
WIPO (PCT)
Prior art keywords
carrier
cbr
filtered
carriers
threshold
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2018/080715
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English (en)
French (fr)
Inventor
唐海
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Oppo Mobile Telecommunications Corp Ltd
Original Assignee
Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Oppo Mobile Telecommunications Corp Ltd filed Critical Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority to CN202010071976.3A priority Critical patent/CN111277979B/zh
Priority to IL273275A priority patent/IL273275B2/en
Priority to KR1020207007333A priority patent/KR102630203B1/ko
Priority to JP2020515229A priority patent/JP7124066B6/ja
Priority to EP22209505.1A priority patent/EP4164259B1/en
Priority to AU2018331013A priority patent/AU2018331013B2/en
Priority to KR1020247002678A priority patent/KR20240013867A/ko
Priority to EP18856998.2A priority patent/EP3664533A4/en
Priority to EP24201042.9A priority patent/EP4468759A3/en
Priority to MYPI2020001386A priority patent/MY207595A/en
Priority to CN201880041686.5A priority patent/CN110786057A/zh
Priority to ES22209505T priority patent/ES2998835T3/es
Priority to CN202310087429.8A priority patent/CN116113048A/zh
Priority to PCT/CN2018/085497 priority patent/WO2019052198A1/zh
Priority to TW107132556A priority patent/TWI812640B/zh
Publication of WO2019052148A1 publication Critical patent/WO2019052148A1/zh
Priority to US16/803,857 priority patent/US11553487B2/en
Priority to PH12020500538A priority patent/PH12020500538A1/en
Priority to CL2020000669A priority patent/CL2020000669A1/es
Anticipated expiration legal-status Critical
Priority to US17/814,189 priority patent/US20220361172A1/en
Ceased legal-status Critical Current

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30Services specially adapted for particular environments, situations or purposes
    • H04W4/40Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/44Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/08Testing, supervising or monitoring using real traffic
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30Services specially adapted for particular environments, situations or purposes
    • H04W4/40Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30Services specially adapted for particular environments, situations or purposes
    • H04W4/40Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/48Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for in-vehicle communication
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/02Selection of wireless resources by user or terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453Resources in frequency domain, e.g. a carrier in FDMA
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/52Allocation or scheduling criteria for wireless resources based on load
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/54Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality

Definitions

  • the embodiments of the present application relate to the field of wireless communications, and, more particularly, to a method and carrier for carrier selection.
  • Vehicle networking or Vehicle to Everything (V2X) communication system is a sidelink (SL) transmission technology based on Device to Device (D2D) communication, with traditional long-term evolution ( In the Long Term Evolution (LTE) system, the way in which the base station receives or transmits data is different.
  • the vehicle networking system adopts a terminal-to-terminal direct communication method, and thus has higher spectrum efficiency and lower transmission delay.
  • a terminal device may perform current data transmission using one or more of the candidate multiple carriers. Therefore, how to select a carrier by a terminal device or a base station becomes an urgent problem to be solved.
  • the embodiment of the present application provides a carrier selection method and a communication device, which can effectively perform carrier selection while maintaining system stability.
  • a method for carrier selection including: acquiring a channel occupancy ratio CBR of a plurality of candidate carriers; and performing filtering processing on the CBRs of the multiple carriers to obtain the filtered multiple carriers. CBR; performing carrier selection on the plurality of carriers according to the filtered CBR of the multiple carriers.
  • the filtering processing the CBRs of the multiple carriers includes: performing smoothing filtering on CBRs of the multiple carriers.
  • the CBR_new is the CBR of each carrier after the filtering
  • the CBR_current is the CBR of each carrier before the filtering
  • the CBR_old is the CBR of each carrier after the last carrier selection
  • a is a filter coefficient and 0. ⁇ a ⁇ 1.
  • the method before the performing carrier selection in the multiple carriers according to the filtered CBR of the multiple carriers, the method further includes: determining, by using the filtered first carrier Whether the difference between the CBR and the filtered CBR of the second carrier exceeds a first threshold, where the first carrier is a carrier used for current data transmission, and the second carrier is the multiple carrier Any carrier other than the first carrier;
  • the performing the carrier selection in the multiple carriers according to the filtered CBR of the multiple carriers including: if the filtered CBR of the first carrier, and the filtered second carrier The difference between the CBRs exceeds the first threshold, and the carrier selection is performed in the plurality of carriers according to the filtered CBR of the multiple carriers.
  • the carrier selection is determined according to the difference between the CBR of the current carrier and the other carriers, and the carrier selection is performed based on the filtered CBR when the difference of the CBR is satisfied, thereby further reducing the frequency of carrier switching, thereby ensuring System stability.
  • the difference between the filtered CBR of the first carrier and the filtered CBR of the second carrier exceeds the first threshold, according to filtering
  • the CBR of the plurality of carriers is selected by the carrier in the multiple carriers, including: a difference between the CBR of the filtered first carrier and the CBR of the filtered second carrier The value exceeds the first threshold, and according to the filtered CBR of the multiple carriers, one carrier is selected as the carrier to be used in the carrier where the difference between the CBR and the CBR of the first carrier exceeds the first threshold.
  • the method is performed by the terminal device, whether the difference between the CBR of the first carrier that is determined to be filtered and the CBR of the filtered second carrier exceeds a first threshold.
  • the method further includes: the terminal device acquiring the first threshold pre-configured in the terminal device; or the terminal device receiving configuration information sent by the network device, where the configuration information includes the first Threshold.
  • the method is performed by a network device, the method further comprising: the network device sending configuration information to the terminal device, where the configuration information includes the first threshold.
  • the difference between the filtered CBR of the first carrier and the filtered CBR of the second carrier exceeds the first threshold, according to filtering
  • the CBR of the plurality of carriers is selected by the carrier in the multiple carriers, including: a difference between the CBR of the filtered first carrier and the CBR of the filtered second carrier And a value that exceeds the first threshold and continues for a preset duration, and performs carrier selection on the multiple carriers according to CBR of the multiple carriers.
  • the difference between the filtered CBR of the first carrier and the filtered CBR of the second carrier exceeds the first threshold and continues to be preset.
  • the duration of the carrier selection is performed on the plurality of carriers according to the filtered CBR of the multiple carriers, including: if the filtered CBR of the first carrier, and the filtered second carrier The difference between the CBRs exceeds the first threshold and continues for a preset duration.
  • the difference between the filtered CBR and the CBR of the first carrier exceeds the first threshold. In the middle, one carrier is selected as the carrier to be used.
  • the difference between the filtered CBR of the first carrier and the filtered CBR of the second carrier exceeds the first threshold, according to filtering
  • the CBR of the plurality of carriers is selected by the carrier in the multiple carriers, including: a difference between the CBR of the filtered first carrier and the CBR of the filtered second carrier The value exceeds the first threshold, and the CBR of the filtered first carrier is greater than the second threshold, and the carrier is selected in the multiple carriers according to the CBR of the multiple carriers.
  • the difference between the filtered CBR of the first carrier and the filtered CBR of the second carrier exceeds the first threshold, according to filtering
  • the CBR of the plurality of carriers is selected by the carrier in the multiple carriers, including: a difference between the CBR of the filtered first carrier and the CBR of the filtered second carrier a value that exceeds the first threshold, and the CBR of the filtered first carrier is less than or equal to a second threshold, and the first carrier is selected as a carrier to be used; or, if the filtered first The difference between the CBR of the carrier and the filtered CBR of the second carrier exceeds the first threshold, and the filtered CBR of the first carrier is less than or equal to the second threshold, after filtering Carrier selection is performed in a carrier whose CBR is less than or equal to the second threshold.
  • the method before the performing carrier selection in the multiple carriers according to the filtered CBR of the multiple carriers, the method further includes: determining, by using the filtered first carrier Whether the difference between the CBR and the filtered CBR of the second carrier exceeds a first threshold, where the first carrier is a carrier used for current data transmission, and the second carrier is the multiple carrier Any carrier other than the first carrier;
  • the performing the carrier selection in the multiple carriers according to the filtered CBR of the multiple carriers including: if the filtered CBR of the first carrier, and the filtered second carrier If the difference between the CBRs does not exceed the first threshold, the first carrier is selected as the carrier to be used; or
  • any one of the multiple carriers is selected as Carrier to be used; or,
  • the carrier is used as the carrier to be used.
  • the process of performing carrier selection does not depend on the ProbResourceKeep parameter, but determines whether carrier selection is currently required based on the resource reselection counter C_resel, and performs carrier selection based on the filtered CBR when carrier selection is required.
  • the frequency of carrier switching is reduced, and the stability of the system is ensured.
  • a corresponding C_resel is configured on each of the multiple carriers, where, when the value of C_resel is equal to 0, according to the filtered CBR of the multiple carriers, Performing carrier selection in the multiple carriers, including: when the value of C_resel corresponding to the carrier used by the current data transmission in the plurality of C_resels configured on the multiple carriers is equal to 0, according to the filtered
  • the CBR of each carrier performs carrier selection in the plurality of carriers.
  • the same C_resel is configured on the multiple carriers, where, when the value of C_resel is equal to 0, according to the filtered CBR of the multiple carriers, in the multiple Performing carrier selection in the carrier includes: when the value of the same C_resel is equal to 0, performing carrier selection on the plurality of carriers according to the filtered CBR of the multiple carriers.
  • the method before the selecting, according to the filtered CBR of the multiple carriers, the carrier selection in the multiple carriers, the method further includes: when the value of C_resel is equal to 0, Determining whether a difference between a CBR of the filtered first carrier and a CBR of the filtered second carrier exceeds a first threshold, where the first carrier is a carrier used for current data transmission, where The second carrier is any one of the plurality of carriers except the first carrier;
  • the performing the carrier selection in the multiple carriers according to the filtered CBR of the multiple carriers including: if the filtered CBR of the first carrier, and the filtered second carrier The difference between the CBRs exceeds the first threshold, and the carrier selection is performed in the plurality of carriers according to the filtered CBR of the multiple carriers.
  • the filter is based on the difference when the difference of the CBR is satisfied.
  • the processed CBR performs carrier selection, thereby further reducing the frequency of carrier switching and ensuring system stability.
  • the difference between the filtered CBR of the first carrier and the filtered CBR of the second carrier exceeds the first threshold if the difference between the filtered CBR of the first carrier and the filtered CBR of the second carrier exceeds the first threshold, according to filtering
  • the CBR of the plurality of carriers is selected by the carrier in the multiple carriers, including: a difference between the CBR of the filtered first carrier and the CBR of the filtered second carrier a value that exceeds the first threshold, according to the filtered CBR of the multiple carriers, in the carrier where the difference between the filtered CBR and the CBR of the first carrier exceeds the first threshold, one carrier is selected as the carrier to be used. .
  • the method is performed by the terminal device, whether the difference between the CBR of the first carrier that is determined to be filtered and the CBR of the filtered second carrier exceeds a first threshold.
  • the method further includes: the terminal device acquiring the first threshold pre-configured in the terminal device; or the terminal device receiving configuration information sent by the network device, where the configuration information includes the first Threshold.
  • the method is performed by a network device, the method further comprising: the network device sending configuration information to the terminal device, where the configuration information includes the first threshold.
  • a corresponding C_resel is configured on each of the multiple carriers, where the CBR of the filtered first carrier is determined when the value of the C_resel is equal to 0, Whether the difference between the CBR of the filtered second carrier and the CBR exceeds the first threshold includes: when the plurality of C_resels configured on the multiple carriers are equal to the value of C_resel corresponding to the carrier used by the current data transmission 0: determining whether a difference between the filtered CBR of the first carrier and the filtered CBR of the second carrier exceeds the first threshold.
  • the same C_resel is configured on the multiple carriers, where the CBR of the filtered first carrier and the filtered second carrier are determined when the value of C_resel is equal to 0.
  • Whether the difference between the CBRs exceeds the first threshold includes: determining, when the value of the same C_resel is equal to 0, determining the CBR of the filtered first carrier, and filtering the second carrier Whether the difference between the CBRs exceeds the first threshold.
  • the difference between the filtered CBR of the first carrier and the filtered CBR of the second carrier exceeds the first threshold, according to filtering
  • the CBR of the plurality of carriers is selected by the carrier in the multiple carriers, including: a difference between the CBR of the filtered first carrier and the CBR of the filtered second carrier And a value that exceeds the first threshold and continues for a preset duration, and performs carrier selection on the multiple carriers according to CBR of the multiple carriers.
  • the difference between the filtered CBR of the first carrier and the filtered CBR of the second carrier exceeds the first threshold, according to filtering
  • the CBR of the plurality of carriers is selected by the carrier in the multiple carriers, including: a difference between the CBR of the filtered first carrier and the CBR of the filtered second carrier The value exceeds the first threshold, and the CBR of the filtered first carrier is greater than the second threshold, and the carrier is selected in the multiple carriers according to the CBR of the multiple carriers.
  • the difference between the filtered CBR of the first carrier and the filtered CBR of the second carrier exceeds the first threshold, according to filtering
  • the CBR of the plurality of carriers is selected by the carrier in the multiple carriers, including: a difference between the CBR of the filtered first carrier and the CBR of the filtered second carrier a value that exceeds the first threshold, and the CBR of the filtered first carrier is less than or equal to a second threshold, and the first carrier is selected as a carrier to be used; or, if the filtered first The difference between the CBR of the carrier and the filtered CBR of the second carrier exceeds the first threshold, and the filtered CBR of the first carrier is less than or equal to the second threshold, after filtering Carrier selection is performed in a carrier whose CBR is less than or equal to the second threshold.
  • the method before the performing carrier selection in the multiple carriers according to the filtered CBR of the multiple carriers, the method further includes: determining, by using the filtered first carrier Whether the difference between the CBR and the filtered CBR of the second carrier exceeds a first threshold, where the first carrier is a carrier used for current data transmission, and the second carrier is the multiple carrier Any carrier other than the first carrier;
  • the performing the carrier selection in the multiple carriers according to the filtered CBR of the multiple carriers including: if the filtered CBR of the first carrier, and the filtered second carrier If the difference between the CBRs does not exceed the first threshold, the first carrier is selected as the carrier to be used; or
  • any one of the multiple carriers is selected as Carrier to be used; or,
  • the carrier is used as the carrier to be used.
  • the selecting, according to the filtered CBR of the multiple carriers, the carrier selection in the multiple carriers including: according to the filtered CBR of the multiple carriers, Among the plurality of carriers, the carrier with the smallest CBR after filtering is selected as the carrier to be used.
  • the method is performed by a terminal device, where acquiring CBRs of multiple carriers of a candidate includes: the terminal device performing measurement on CBRs of the multiple carriers to obtain the multiple CBR of the carrier.
  • the method is performed by a terminal device, where the CBR of the multiple carriers of the candidate is obtained, where the terminal device receives a broadcast message sent by the network device, where the broadcast message carries a candidate.
  • the CBR of the plurality of carriers is performed by a terminal device, where the CBR of the multiple carriers of the candidate is obtained, where the terminal device receives a broadcast message sent by the network device, where the broadcast message carries a candidate.
  • the method is performed by a network device, and the acquiring, by the network device, the CBR of the multiple carriers reported by the terminal device.
  • the process of selecting a carrier is not related to a resource retention probability ProbResourceKeep parameter.
  • a CBR of each of the multiple carriers is a CBR of a resource pool used by the terminal device on each of the carriers.
  • the resource pool used by the terminal device on each of the carriers is a resource pool corresponding to the area where the terminal is located in the multiple resource pools, where the multiple There is a correspondence between a resource pool and multiple regions.
  • the carrier selection is determined according to the difference between the CBR of the current carrier and the other carriers, and the carrier selection is performed only when the difference of the CBR satisfies the condition, thereby reducing the frequency of the carrier switching and ensuring the stability of the system.
  • determining whether a difference between a CBR of the first carrier and a CBR of the second carrier exceeds a first threshold includes: determining, when the value of the resource reselection counter C_resel is equal to 0, Whether a difference between a CBR of the first carrier and a CBR of the second carrier exceeds the first threshold.
  • Carrier CBR performs carrier selection, thereby reducing the frequency of carrier switching and ensuring system stability.
  • Performing carrier selection in the multiple carriers including: if the difference between the CBR of the first carrier and the CBR of the second carrier exceeds the first threshold, according to the CBR of the multiple carriers, in the CBR Among the carriers that differ from the CBR of the first carrier by more than the first threshold, one carrier is selected as the carrier to be used.
  • Performing carrier selection in the multiple carriers including: if the difference between the CBR of the first carrier and the CBR of the second carrier exceeds a first threshold and continues for a preset duration, according to the multiple carriers CBR, performing carrier selection on the plurality of carriers.
  • the carrier selection in the multiple carriers including: if the difference between the CBR of the first carrier and the CBR of the second carrier exceeds the first threshold, according to the multiple carriers
  • the CBR selects one carrier as the carrier to be used in the carrier where the difference between the CBR and the CBR of the first carrier exceeds the first threshold.
  • Performing carrier selection in a plurality of carriers including: if a difference between a CBR of the first carrier and a CBR of the second carrier exceeds a first threshold, and a CBR of the first carrier is greater than a second threshold, And performing carrier selection on the plurality of carriers according to the CBR of the multiple carriers.
  • Performing carrier selection in the multiple carriers including: if the difference between the CBR of the first carrier and the CBR of the second carrier exceeds the first threshold, and the CBR of the first carrier is less than or Equal to the second threshold, the first carrier is selected as the carrier to be used; or
  • the CBR of the first carrier exceeds the first threshold, and the CBR of the first carrier is less than or equal to the second threshold, then the CBR is less than or Carrier selection is performed in a carrier equal to the second threshold.
  • the method further includes: if the difference between the CBR of the first carrier and the CBR of the second carrier does not exceed the first threshold, The first carrier is used as the carrier to be used; or
  • the difference between the CBR of the first carrier and the CBR of the second carrier does not exceed the first threshold, select any one of the multiple carriers as the carrier to be used; or ,
  • the carrier with the smallest CBR is selected as the carrier to be used among the multiple carriers.
  • determining whether a difference between a CBR of the first carrier and a CBR of the second carrier exceeds a first threshold includes: determining, when the value of C_resel is equal to 0, the first Whether the difference between the CBR of the carrier and the CBR of the second carrier exceeds the first threshold.
  • a corresponding C_resel is configured on each of the multiple carriers, where the CBR of the first carrier is determined when the value of the C_resel is equal to 0, and the second Whether the difference between the CBRs of the carriers exceeds the first threshold includes: determining, when the value of C_resel corresponding to the carrier used by the current data transmission is equal to 0, among the plurality of C_resels configured on the multiple carriers Whether a difference between a CBR of the first carrier and a CBR of the second carrier exceeds the first threshold.
  • the same C_resel is configured on the multiple carriers, where when the value of C_resel is equal to 0, the difference between the CBR of the first carrier and the CBR of the second carrier is determined. Whether the value exceeds the first threshold, whether the difference between the CBR of the first carrier and the CBR of the second carrier exceeds the first threshold when the value of the same C_resel is equal to 0 .
  • the performing carrier selection in the multiple carriers includes: selecting, according to a CBR of the multiple carriers, a carrier with a minimum CBR among the multiple carriers as a carrier to be used. .
  • the method is performed by a terminal device, where acquiring CBRs of multiple carriers of a candidate includes: the terminal device performing measurement on CBRs of the multiple carriers to obtain the multiple CBR of the carrier.
  • the method is performed by a terminal device, where the CBR of the multiple carriers of the candidate is obtained, where the terminal device receives a broadcast message sent by the network device, where the broadcast message carries a candidate.
  • the CBR of the plurality of carriers is performed by a terminal device, where the CBR of the multiple carriers of the candidate is obtained, where the terminal device receives a broadcast message sent by the network device, where the broadcast message carries a candidate.
  • the method before the determining whether the difference between the CBR of the first carrier and the CBR of the second carrier exceeds the first threshold, the method further includes: acquiring, by the terminal device, the pre-configuration The first threshold in the terminal device; or the terminal device receives configuration information sent by the network device, where the configuration information includes the first threshold.
  • the method is performed by a network device, and the acquiring, by the network device, the CBR of the multiple carriers reported by the terminal device.
  • the method further includes: the network device sending configuration information to the terminal device, where the configuration information includes the first threshold.
  • the process of selecting a carrier is not related to a resource retention probability ProbResourceKeep parameter.
  • a CBR of each of the multiple carriers is a CBR of a resource pool used by the terminal device on each of the carriers.
  • the resource pool used by the terminal device on each of the carriers is a resource pool corresponding to the area where the terminal is located in the multiple resource pools, where the multiple There is a correspondence between a resource pool and multiple regions.
  • a third aspect provides a method for selecting a carrier, including: acquiring a channel occupancy ratio CBR of a plurality of candidate carriers; and when the value of the resource reselection counter C_resel is equal to 0, according to the CBR of the multiple carriers, Carrier selection is performed among a plurality of carriers.
  • the process of carrier selection does not depend on the ProbResourceKeep parameter, but based on the resource reselection counter C_resel to determine whether carrier selection is currently required, thereby achieving efficient carrier selection and reducing system complexity.
  • a corresponding C_resel is configured on each of the multiple carriers, where, when the value of C_resel is equal to 0, according to the CBR of the multiple carriers, Performing carrier selection in multiple carriers, including: when the value of C_resel corresponding to the carrier used by the current data transmission is equal to 0 among the plurality of C_resels configured on the multiple carriers, according to the CBR of the multiple carriers, Carrier selection is performed among the plurality of carriers.
  • the same C_resel is configured on the multiple carriers, where when the value of C_resel is equal to 0, according to the CBR of the multiple carriers, in the multiple carriers
  • the carrier selection includes: when the value of the same C_resel is equal to 0, performing carrier selection on the multiple carriers according to CBR of the multiple carriers.
  • performing carrier selection in the multiple carriers according to the CBR of the multiple carriers including: selecting, among the multiple carriers, according to CBRs of the multiple carriers The carrier with the smallest CBR is used as the carrier to be used.
  • the method is performed by a terminal device, where the CBR of the multiple carriers of the candidate is obtained, where the terminal device receives a broadcast message sent by the network device, where the broadcast message carries a candidate.
  • the CBR of the plurality of carriers is performed by a terminal device, where the CBR of the multiple carriers of the candidate is obtained, where the terminal device receives a broadcast message sent by the network device, where the broadcast message carries a candidate.
  • the method is performed by a network device, and the acquiring, by the network device, the CBR of the multiple carriers reported by the terminal device.
  • the process of selecting a carrier is not related to a resource retention probability ProbResourceKeep parameter.
  • a CBR of each of the multiple carriers is a CBR of a resource pool used by the terminal device on each of the carriers.
  • the resource pool used by the terminal device on each of the carriers is a resource pool corresponding to the area where the terminal is located in the multiple resource pools, where the multiple There is a correspondence between a resource pool and multiple regions.
  • a fourth aspect provides a method for selecting a carrier, including: acquiring a channel occupancy ratio CBR of a plurality of candidate carriers; and when the location of the terminal device is moved from the first region to the second region, according to the multiple carriers CBR, performing carrier selection on the plurality of carriers.
  • Performing carrier selection in the multiple carriers including: if the difference between the CBR of the first carrier and the CBR of the second carrier exceeds the first threshold, according to the multiple The CBR of the carrier selects one carrier as the carrier to be used in the carrier where the difference between the CBR and the CBR of the first carrier exceeds the first threshold.
  • Performing carrier selection in the multiple carriers including: if the difference between the CBR of the first carrier and the CBR of the second carrier exceeds the first threshold and continues for a preset duration, according to the multiple The CBR of each carrier performs carrier selection in the plurality of carriers.
  • the multiple CBR of the carrier performing carrier selection in the multiple carriers, including: if the difference between the CBR of the first carrier and the CBR of the second carrier exceeds the first threshold and continues to pre- In the case of the CBR of the multiple carriers, one carrier is selected as the carrier to be used in the carrier where the difference between the CBR and the CBR of the first carrier exceeds the first threshold.
  • Performing carrier selection in a plurality of carriers including: if a difference between a CBR of the first carrier and a CBR of the second carrier exceeds the first threshold, and a CBR of the first carrier is greater than a first And a second threshold, wherein the carrier selection is performed in the multiple carriers according to the CBR of the multiple carriers.
  • the carrier selection in the multiple carriers including: if the difference between the CBR of the first carrier and the CBR of the second carrier exceeds the first threshold, And the CBR of the first carrier is less than or equal to the second threshold, and the first carrier is selected as the carrier to be used; or
  • the CBR of the first carrier exceeds the first threshold, and the CBR of the first carrier is less than or equal to the second threshold, then the CBR is less than or Carrier selection is performed in a carrier equal to the second threshold.
  • the method further includes: determining, when the location of the terminal device is moved from the first region to the second region, a difference between a CBR of the first carrier and a CBR of the second carrier, Exceeding a first threshold, where the first carrier is a carrier used by a current data transmission, and the second carrier is any carrier of the multiple carriers except the first carrier;
  • the first carrier is selected as the carrier to be used.
  • the difference between the CBR of the first carrier and the CBR of the second carrier does not exceed the first threshold, select any one of the multiple carriers as the carrier to be used; or ,
  • the carrier with the smallest CBR is selected as the carrier to be used among the multiple carriers.
  • the method is performed by the terminal device, where the method determines whether a difference between a CBR of the first carrier and a CBR of the second carrier exceeds a first threshold.
  • the method further includes: the terminal device acquiring the first threshold pre-configured in the terminal device; or the terminal device receiving configuration information sent by the network device, where the configuration information includes the first threshold.
  • the method is performed by a network device, the method further comprising: the network device sending configuration information to the terminal device, where the configuration information includes the first threshold.
  • performing carrier selection in the multiple carriers according to the CBR of the multiple carriers including: selecting, among the multiple carriers, according to CBRs of the multiple carriers The carrier with the smallest CBR is used as the carrier to be used.
  • the method before the performing carrier selection in the multiple carriers according to the CBR of the multiple carriers, the method further includes: filtering the CBR of the multiple carriers Obtaining a filtered CBR of the plurality of carriers;
  • the carrier selection is performed in the multiple carriers according to the CBR of the multiple carriers, including: when the location of the terminal device is first When the region moves to the second region, carrier selection is performed on the plurality of carriers according to the filtered CBR of the plurality of carriers.
  • the CBR measurement result of the multiple carriers is filtered, and based on the filtered CBR of the multiple carriers, the filtered Carrier selection is performed in each carrier, so that carrier selection is reduced, carrier switching frequency is reduced, and system stability is ensured.
  • the filtering processing the CBRs of the multiple carriers includes: performing smoothing filtering on CBRs of the multiple carriers.
  • CBR of each carrier CBR_current is the CBR of each carrier before filtering
  • CBR_old is the CBR of each carrier after filtering on the previous carrier selection
  • a is a filter coefficient and 0 ⁇ a ⁇ 1.
  • the method before the performing carrier selection in the multiple carriers according to the CBR of the multiple carriers, the method further includes: Filtering the CBR of the multiple carriers to obtain a filtered CBR of the multiple carriers;
  • the terminal device When the location of the terminal device is moved from the first region to the second region, determining whether a difference between the CBR of the filtered first carrier and the CBR of the filtered second carrier exceeds a threshold, where the first carrier is a carrier used for current data transmission, and the second carrier is any carrier of the multiple carriers except the first carrier;
  • Carrier selection is performed among the plurality of carriers.
  • the multiple carriers are adopted.
  • the measurement result of the CBR is filtered, and based on the filtered CBR of the plurality of carriers, carrier selection is performed in the plurality of carriers, thereby reducing the frequency of carrier switching and ensuring the system while implementing carrier selection. Stability.
  • the difference between the filtered CBR of the first carrier and the filtered CBR of the second carrier exceeds the first threshold if the difference between the filtered CBR of the first carrier and the filtered CBR of the second carrier exceeds the first threshold, according to filtering
  • the CBR of the plurality of carriers is selected by the carrier in the multiple carriers, including: a difference between the CBR of the filtered first carrier and the CBR of the filtered second carrier a value that exceeds the first threshold, according to the filtered CBR of the multiple carriers, in the carrier where the difference between the filtered CBR and the CBR of the first carrier exceeds the first threshold, one carrier is selected as the carrier to be used. .
  • the filtering processing the CBRs of the multiple carriers includes: performing smoothing filtering on CBRs of the multiple carriers.
  • the difference between the filtered CBR of the first carrier and the filtered CBR of the second carrier exceeds the first threshold, according to filtering
  • the CBR of the plurality of carriers is selected by the carrier in the multiple carriers, including: a difference between the CBR of the filtered first carrier and the CBR of the filtered second carrier And a value that exceeds the first threshold and continues for a preset duration, and performs carrier selection on the multiple carriers according to the filtered CBR of the multiple carriers.
  • the difference between the filtered CBR of the first carrier and the filtered CBR of the second carrier exceeds the first threshold and continues to be preset.
  • the duration of the carrier selection is performed on the plurality of carriers according to the filtered CBR of the multiple carriers, including: if the filtered CBR of the first carrier, and the filtered second carrier The difference between the CBRs exceeds the first threshold and continues for a preset duration.
  • the difference between the filtered CBR and the CBR of the first carrier exceeds the first threshold. In the middle, one carrier is selected as the carrier to be used.
  • the carrier selection in the multiple carriers including: if the difference between the CBR of the filtered first carrier and the filtered CBR of the second carrier exceeds the first And a threshold, and the CBR of the first carrier is greater than the second threshold, and performing carrier selection on the multiple carriers according to the filtered CBR of the multiple carriers.
  • the second threshold is performed by selecting a carrier in the carrier after the filtering CBR is less than or equal to the second threshold.
  • the method before the performing carrier selection in the multiple carriers according to the CBR of the multiple carriers, the method further includes: filtering the CBR of the multiple carriers Obtaining a filtered CBR of the plurality of carriers;
  • the carrier selection is performed in the multiple carriers according to the CBR of the multiple carriers, including: when the location of the terminal device is And determining, when the first area is moved to the second area, whether a difference between a CBR of the filtered first carrier and a CBR of the filtered second carrier exceeds a first threshold, where the One carrier is a carrier used for current data transmission, and the second carrier is any carrier of the plurality of carriers except the first carrier;
  • the first carrier is selected as the carrier to be used; or,
  • any one of the multiple carriers is selected as Carrier to be used; or,
  • the carrier is used as the carrier to be used.
  • the selecting, according to the CBR of the multiple carriers, the carrier selection in the multiple carriers includes: according to the filtered CBR of the multiple carriers, in the multiple The carrier with the smallest CBR after filtering is selected as the carrier to be used.
  • the method is performed by a terminal device, where acquiring CBRs of multiple carriers of a candidate includes: the terminal device performing measurement on CBRs of the multiple carriers to obtain the multiple CBR of the carrier.
  • the method is performed by a terminal device, where the CBR of the multiple carriers of the candidate is obtained, where the terminal device receives a broadcast message sent by the network device, where the broadcast message carries a candidate.
  • the CBR of the plurality of carriers is performed by a terminal device, where the CBR of the multiple carriers of the candidate is obtained, where the terminal device receives a broadcast message sent by the network device, where the broadcast message carries a candidate.
  • the method is performed by a network device, and the acquiring, by the network device, the CBR of the multiple carriers reported by the terminal device.
  • a CBR of each of the multiple carriers is a CBR of a resource pool used by the terminal device on each of the carriers.
  • the resource pool used by the terminal device on each of the carriers is a resource pool corresponding to the area where the terminal is located in the multiple resource pools, where the multiple There is a correspondence between a resource pool and multiple regions.
  • a communication device which can perform the operations of the communication device of the first aspect or any alternative implementation of the first aspect described above.
  • the communication device may comprise a modular unit for performing the operations of any of the above-described first aspects or any of the possible implementations of the first aspect.
  • a communication device which can perform the operations of the communication device in any of the alternative aspects of the second aspect or the second aspect described above.
  • the communication device may comprise a modular unit for performing the operations in any of the possible implementations of the second aspect or the second aspect described above.
  • a communication device which can perform the operations of the communication device in any of the optional implementations of the third aspect or the third aspect described above.
  • the communication device may comprise a modular unit for performing the operations in any of the possible implementations of the third or third aspect described above.
  • a communication device which can perform the operations of the communication device in any of the alternative aspects of the fourth aspect or the fourth aspect described above.
  • the communication device may comprise a modular unit for performing the operations in any of the possible implementations of the fourth or fourth aspect described above.
  • a communication device comprising: a processor, a transceiver, and a memory.
  • the processor, the transceiver, and the memory communicate with each other through an internal connection path.
  • the memory is for storing instructions for executing instructions stored by the memory.
  • the processor executes the instructions stored by the memory, the executing causes the communication device to perform the method of the first aspect or any possible implementation of the first aspect, or the execution causes the communication device to implement the communication provided by the fifth aspect device.
  • a communication device comprising: a processor, a transceiver, and a memory.
  • the processor, the transceiver, and the memory communicate with each other through an internal connection path.
  • the memory is for storing instructions for executing instructions stored by the memory.
  • the processor executes the instruction stored by the memory, the executing causes the communication device to perform the method of any of the second aspect or the second aspect, or the execution causes the communication device to implement the communication provided by the sixth aspect device.
  • a communication device comprising: a processor, a transceiver, and a memory.
  • the processor, the transceiver, and the memory communicate with each other through an internal connection path.
  • the memory is for storing instructions for executing instructions stored by the memory.
  • the processor executes the instructions stored by the memory, the executing causes the communication device to perform the method of any of the third aspect or any of the possible implementations of the third aspect, or the execution causes the communication device to implement the communication provided by the seventh aspect device.
  • a computer readable storage medium in a thirteenth aspect, storing a program causing a communication device to perform any of the first aspect described above, and various implementations thereof The method of selection.
  • a computer readable storage medium in a fourteenth aspect, storing a program causing a communication device to perform the second aspect described above, and any one of the various implementations thereof The method of selection.
  • a computer readable storage medium storing a program causing a communication device to perform any of the third aspect described above, and various implementations thereof The method of selection.
  • a computer readable storage medium in a sixteenth aspect, storing a program causing a communication device to perform the fourth aspect described above, and any one of the various implementations thereof The method of selection.
  • a system chip comprising an input interface, an output interface, a processor, and a memory
  • the processor is configured to execute an instruction stored by the memory, and when the instruction is executed, the processor can implement The method of any of the preceding first aspect or any possible implementation of the first aspect.
  • a system chip includes an input interface, an output interface, a processor, and a memory, where the processor is configured to execute an instruction stored by the memory, and when the instruction is executed, the processor can implement The method of any of the preceding second aspect or any of the possible implementations of the second aspect.
  • a system chip comprising an input interface, an output interface, a processor, and a memory
  • the processor is configured to execute an instruction stored by the memory, and when the instruction is executed, the processor can implement The method of any of the preceding third aspect or any possible implementation of the third aspect.
  • a system chip comprising an input interface, an output interface, a processor, and a memory
  • the processor is configured to execute an instruction stored by the memory, and when the instruction is executed, the processor can implement The method of any of the preceding fourth aspect or any possible implementation of the fourth aspect.
  • a twenty-first aspect a computer program product comprising instructions for causing a computer to execute the method of any of the first aspect or the first aspect of the first aspect when the computer program product is run on a computer .
  • a twenty-second aspect a computer program product comprising instructions for causing a computer to execute the method of any of the second aspect or the second aspect of the second aspect when the computer program product is run on a computer .
  • a twenty-third aspect a computer program product comprising instructions for causing a computer to execute a method of any of the above-described third or third aspect, when the computer program product is run on a computer .
  • a twenty-fourth aspect a computer program product comprising instructions for causing a computer to execute the method of any of the above-described fourth or fourth aspects, when the computer program product is run on a computer .
  • FIG. 1 is a schematic structural diagram of an application scenario of an embodiment of the present application.
  • FIG. 2 is a schematic structural diagram of another application scenario of the embodiment of the present application.
  • FIG. 3 is a schematic diagram of resource sensing and selection according to another embodiment of the present application.
  • FIG. 4 is a schematic flowchart of a method for carrier selection according to still another embodiment of the present application.
  • FIG. 5 is a schematic flowchart of a method for carrier selection according to another embodiment of the present application.
  • FIG. 6 is a schematic flowchart of a method for carrier selection according to still another embodiment of the present application.
  • FIG. 7 is a schematic flowchart of a method for carrier selection according to still another embodiment of the present application.
  • FIG. 8 is a schematic block diagram of a communication device according to an embodiment of the present application.
  • FIG. 9 is a schematic block diagram of a communication device according to another embodiment of the present application.
  • FIG. 10 is a schematic block diagram of a communication device according to still another embodiment of the present application.
  • FIG. 11 is a schematic block diagram of a communication device according to still another embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of a system chip according to an embodiment of the present application.
  • the present application describes various embodiments in connection with a terminal device.
  • the terminal device may also refer to a user equipment (User Equipment, UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, and a user agent.
  • the access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), or a wireless communication function.
  • PLMN public mobile communication network
  • the present application describes various embodiments in connection with a network device.
  • the network device may be a device for communicating with the terminal device, for example, may be a base station (Base Transceiver Station, BTS) in the GSM system or CDMA, or may be a base station (NodeB, NB) in the WCDMA system, or may be An evolved base station (Evolutional Node B, eNB or eNodeB) in an LTE system, or the network device may be a relay station, an access point, an in-vehicle device, a wearable device, and a network side device in a future 5G network or a future evolved PLMN network. Network side devices, etc.
  • a terminal device having a listening capability such as a Vehicle User Equipment (VUE) or a Pedestrian User Equipment (PUE), and no listening.
  • VUE Vehicle User Equipment
  • PUE Pedestrian User Equipment
  • Capable terminal equipment such as PUE.
  • VUE has higher processing power and is usually powered by the battery in the car, while PUE has lower processing power, and reducing power consumption is also a major factor that PUE needs to consider. Therefore, in the existing car network system, VUE is considered to have Full reception and listening capabilities; while PUE is considered to have partial or no reception and listening capabilities.
  • the resource may be selected by using a similar listening method as the VUE, and the available resources may be selected on the part of the resources that can be intercepted; if the PUE does not have the listening capability, the PUE is in the resource pool. Randomly select transmission resources.
  • transmission mode 3 mode 3
  • transmission mode 4 mode 4
  • the transmission resource of the terminal device using the transmission mode 3 is allocated by the base station, and the terminal device performs data transmission on the side line according to the resource allocated by the base station; the base station may allocate the resource for the single transmission to the terminal device, or may be the terminal.
  • the device allocates resources that are semi-statically transmitted.
  • the terminal device using the transmission mode 4 transmits data by means of sensing and reservation.
  • the terminal device acquires an available resource set by means of interception in the resource pool, and the terminal device randomly selects one resource from the available resource set for data transmission.
  • the terminal device Since the service in the car network system has periodic characteristics, the terminal device usually adopts a semi-static transmission mode, that is, after the terminal device selects one transmission resource, the terminal device continuously uses the resource in multiple transmission cycles, thereby reducing the resource weight.
  • the terminal device carries the information for reserving the next transmission resource in the control information of the current transmission, so that the other terminal device can determine whether the resource is reserved and used by the terminal device by detecting the control information of the terminal device. Reduce the purpose of resource conflicts.
  • the terminal may perform resource sensing according to the method shown in FIG. 3.
  • the terminal device in each sidelink process (one carrier can include two processes), when a new data packet arrives at time n, resource selection is required, and the terminal device according to For the listening result of the first 1s (ie 1000ms) listening window, the resource selection is performed in the time period of [n+T1, n+T2]ms, and the time period of the [n+T1, n+T2]ms is called For the selection window, where T1 and T2 can satisfy, for example, T1 ⁇ 4, 20 ⁇ T2 ⁇ 100.
  • the first 1 s described later is the first 1 s of the pointer for the time n.
  • the specific resource selection process is as follows.
  • the terminal device 20 listens to the resources of the terminal device 30 as an example, and assumes that all resources in the selection window that can be used for the terminal device 20 to transmit are called a candidate resource set:
  • the terminal device 20 transmits its own data on the subframes, then the resources on the subframes corresponding to the corresponding positions in the selected window are selected. Excluded from the set of candidate resources.
  • the terminal device 20 determines whether the time-frequency resource reserved by the terminal device 30 in the selection window overlaps with the time-frequency resource selected by the user for selecting data in the selection window, if the overlapping That is, a resource conflict occurs, and the terminal device 20 excludes the time-frequency resource in the selection window from the candidate resource set.
  • the terminal device 20 performs a measurement of a Received Signal Strength Indicator (RSSI) on the remaining resources in the candidate resource set, and sorts the measurement result from high to low, and excludes resources whose energy is higher than a certain threshold.
  • RSSI Received Signal Strength Indicator
  • the candidate resource set for example, the first 80% of the resources with high measurement power are excluded from the candidate resource set.
  • the time-frequency resource C_resel is used in the subsequent transmission process, where C_resel is a resource reselection counter, and each time data is transmitted, C_resel The value is decremented by 1.
  • C_resel is a resource reselection counter
  • the terminal device 20 When the value of C_resel is reduced to 0, the terminal device 20 generates a random number between [0, 1] and compares it with a Probability Resource Keep (ProbResourceKeep) parameter, which indicates The probability that the terminal device continues to use the resource. If the value of the random number is greater than the parameter, the terminal device 20 performs resource reselection. If the value of the random number is less than the parameter, the terminal device 20 may continue to use the time-frequency resource for data transmission. And reset the value of C_resel at the same time.
  • ProbResourceKeep Probability Resource Keep
  • the current data transmission may be performed using one or more of the candidate multiple carriers.
  • a terminal device using transmission mode 4 may select one or more carriers among a plurality of candidate carriers for current data transmission, and a terminal device using transmission mode 3 may perform current according to one or more carriers selected by the base station. data transmission.
  • the terminal device can measure the congestion degree of the system, for example, the Channel Busy Ratio (CBR), and the base station can instruct the terminal device to report the measurement result to the base station, so that the base station configures the transmission parameter according to the CBR configured by the terminal device, for example, the terminal device allows.
  • CBR Channel Busy Ratio
  • MCS Modulation Coding Mode
  • PBR physical resource blocks
  • retransmissions and other transmission parameters.
  • the CBR can be used for the terminal device to perform carrier selection.
  • the terminal device can select the lowest carrier of the CBR for data transmission according to the CBR measurement result of multiple carriers.
  • the CBR of each carrier may change rapidly with the movement of the terminal device, or the CBR may change with time, which may cause the terminal device to be between multiple carriers each time the carrier is selected. Switching frequently results in instability of the system.
  • the terminal device or the network device can perform effective carrier selection and maintain system stability by performing appropriate processing on the CBR and performing carrier selection based on the processed CBR. .
  • FIG. 4 is a schematic flowchart of a method for carrier selection according to an embodiment of the present application.
  • the method shown in FIG. 4 can be performed by a communication device, which includes a terminal device or a network device, and the terminal device can be, for example, the terminal device 20 or the terminal device 30 shown in FIG. 2, and the network device can be, for example, FIG. Or the network device 10 shown in FIG. 2.
  • the method for selecting the carrier includes:
  • a channel occupancy ratio CBR of a plurality of candidate carriers is obtained.
  • the CBR of the plurality of carriers is filtered to obtain a filtered CBR of the plurality of carriers.
  • carrier selection is performed on the plurality of carriers according to the filtered CBR of the plurality of carriers.
  • the terminal device acquires CBRs of multiple carriers that can be used for data transmission, and performs filtering processing on the CBRs of the candidate multiple carriers to obtain the CBR of the multiple carriers after the filtering process. Then, according to the filtered CBR of the multiple carriers, carrier selection is performed in the multiple carriers to select a carrier to be used. If the selected carrier to be used is the same as the carrier currently used by the terminal device, carrier switching may not be performed, otherwise carrier switching is performed.
  • the CBR of each carrier may change rapidly with the change of the location of the terminal device, or change with time, the CBR of each carrier is filtered by filtering the measured values of the CBR of each carrier. It tends to be stable, so that the carrier selection is reduced, the frequency of carrier switching is reduced, and the stability of the system is ensured.
  • the CBR of each of the multiple carriers is a CBR of a resource pool used by the terminal device on each carrier.
  • the resource pool used by the terminal device on each carrier is a resource pool corresponding to an area (ie, a geographical area) where the terminal is located in the plurality of resource pools, where the multiple resource pools There is a correspondence between multiple regions.
  • a plurality of geographical areas may be divided, and the plurality of geographical areas have a corresponding relationship with the plurality of resource pools, and the resource pool used by the terminal device to transmit data on each carrier is the current geographic location with the terminal device.
  • the resource pool corresponding to the zone.
  • the CBR measured by the terminal device is the CBR of the resource pool, that is, the CBR measured by the terminal device is the CBR of the channel resource in the resource pool.
  • the resource pool used in each carrier may also be different.
  • the corresponding relationship between the multiple geographic regions and the multiple resource pools may be represented by, for example, a mapping table, a formula, or the like, which is not limited in the embodiment of the present application.
  • one geographic area may correspond to one or more resource pools, and one resource pool may also correspond to one or more geographical areas, or the plurality of geographical areas may have a one-to-one correspondence with multiple resource pools.
  • acquiring CBRs of the candidate multiple carriers includes: the terminal device performing measurement on the CBRs of the multiple carriers to obtain CBRs of the multiple carriers.
  • the terminal device measures the CBR of the multiple carriers, and reports the CBR to the upper layer, and the upper layer filters the CBR of the multiple carriers reported by the bottom layer.
  • the terminal device performs carrier selection according to the filtered CBR of the multiple carriers.
  • the method is performed by the terminal device, where the CBR of the candidate multiple carriers is obtained, where the terminal device receives the broadcast message sent by the network device, where the broadcast message carries the candidate multiple carriers. CBR.
  • the CBR of the candidate multiple carriers is obtained by the network device, where the network device receives the CBR of the multiple carriers reported by the terminal device.
  • the network device may instruct the terminal device to measure the CBR of each carrier and report the measurement result to the network device.
  • performing filtering processing on the CBRs of the multiple carriers includes: performing smoothing filtering on the CBRs of the multiple carriers.
  • the manner of smoothing filtering is not limited in the embodiment of the present application.
  • CBR_new is the CBR of each carrier after filtering
  • CBR_current is the CBR of each carrier before filtering
  • CBR_old is the CBR of each carrier after filtering on the previous carrier selection
  • a is the filter coefficient and 0 ⁇ a ⁇ 1.
  • the carrier selection is performed on the multiple carriers according to the filtered CBR of the multiple carriers, including: if the filtered CBR of the first carrier, and the filtered CBR of the second carrier If the difference between the two is greater than the first threshold, carrier selection is performed on the plurality of carriers according to the filtered CBR of the plurality of carriers.
  • the carrier selection is determined according to the difference between the CBR of the current carrier and the other carriers, and the carrier selection is performed based on the filtered CBR when the difference of the CBR is satisfied, thereby further reducing the frequency of carrier switching, thereby ensuring System stability.
  • the method when the method is performed by the terminal device, before determining whether the difference between the CBR of the filtered first carrier and the CBR of the filtered second carrier exceeds a first threshold, the method further includes: The terminal device acquires the first threshold pre-configured in the terminal device; or the terminal device receives configuration information sent by the network device, where the configuration information includes the first threshold.
  • the method when the method is performed by the network device, the method further includes: the network device sending configuration information to the terminal device, where the configuration information includes the first threshold.
  • the CBR may be selected to satisfy the condition among the multiple carriers.
  • Those carriers, and the carriers to be used are selected among the carriers that satisfy the condition, that is, the condition that the difference between the CBR of the carriers and the CBR of the first carrier exceeds the first threshold.
  • Performing carrier selection on the plurality of carriers includes: if the difference between the filtered CBR of the first carrier and the filtered CBR of the second carrier exceeds the first threshold and continues for a preset duration, Carrier selection is performed on the plurality of carriers according to the filtered CBR of the plurality of carriers.
  • the difference between the filtered CBR of the first carrier and the filtered CBR of the second carrier exceeds the first threshold and continues for a preset duration, according to the filtered CBR of the multiple carriers, In the carrier after the filtering, the difference between the CBR and the CBR of the first carrier exceeds the first threshold, one carrier is selected as the carrier to be used.
  • the multiple carriers may be in the multiple carriers. Selecting those carriers whose CBR satisfies the condition, and selecting the carriers to be used among the carriers satisfying the condition, that is, the condition that the difference between the CBR of the carriers and the CBR of the first carrier exceeds the first threshold.
  • Performing carrier selection on the plurality of carriers includes: if the filtered CBR of the first carrier, and the filtered difference between the CBR of the second carrier exceeds the first threshold, and the filtered first If the CBR of the carrier is greater than the second threshold, carrier selection is performed on the plurality of carriers according to the filtered CBR of the multiple carriers.
  • the first carrier is selected as the carrier to be used; or
  • the carrier selection is performed in the carrier after the filtering CBR is less than or equal to the second threshold.
  • the difference between the filtered CBR of the first carrier and the filtered CBR of the second carrier does not exceed the first threshold.
  • the carrier selection in the multiple carriers including:
  • the first carrier is selected as the carrier to be used.
  • the difference between the filtered CBR of the first carrier and the filtered CBR of the second carrier does not exceed the first threshold, select any one of the multiple carriers as the carrier to be used. ;or,
  • the difference between the filtered CBR of the first carrier and the filtered CBR of the second carrier does not exceed the first threshold, selecting the carrier with the smallest CBR after filtering as the to-be-filtered Carrier used.
  • performing carrier selection on the multiple carriers according to the filtered CBR of the multiple carriers including: when the value of the resource reselection counter C_resel is equal to 0, according to the filtered multiple The CBR of the carrier is selected in the plurality of carriers.
  • the process of performing carrier selection does not depend on the ProbResourceKeep parameter, but determines whether carrier selection is currently required based on the resource reselection counter C_resel, and performs carrier selection based on the filtered CBR when carrier selection is required.
  • the frequency of carrier switching is reduced, and the stability of the system is ensured.
  • a corresponding C_resel is configured on each of the multiple carriers, where when the value of C_resel is equal to 0, carrier selection is performed on the multiple carriers according to the CBR of the multiple carriers, including: When the value of C_resel corresponding to the carrier (the first carrier) used by the current data transmission is equal to 0 among the plurality of C_resels configured on the plurality of carriers, performing carrier on the plurality of carriers according to the CBR of the multiple carriers Select.
  • the terminal device can configure an independent C_resel for the HARQ process on each carrier, and trigger the terminal device to perform carrier when the value of C_resel corresponding to the carrier (the first carrier) used for the current data transmission is equal to 0. Select.
  • the same C_resel is configured on the multiple carriers, where when the value of C_resel is equal to 0, carrier selection is performed on the multiple carriers according to the CBR of the multiple carriers, including: when the same When the value of C_resel is equal to 0, carrier selection is performed among the plurality of carriers according to the CBR of the plurality of carriers.
  • the terminal device is triggered to determine the CBR difference, and when the CBR difference between the filtered first carrier and the filtered second carrier exceeds the first threshold, the terminal device Carrier selection is performed among candidate multiple carriers.
  • the difference between the filtered CBR of the first carrier and the filtered CBR of the second carrier exceeds the first threshold according to the filtered CBR of the multiple carriers, in the CBR and the first Among the carriers whose difference in CBR of the carrier exceeds the first threshold, one carrier is selected as the carrier to be used.
  • the difference between the filtered CBR of the first carrier and the filtered CBR of the second carrier exceeds the first threshold and continues for the preset duration, according to the filtered CBR of the multiple carriers And, in the carrier after the filtering, the difference between the CBR and the CBR of the first carrier exceeds the first threshold, one carrier is selected as the carrier to be used.
  • the multiple carriers may be in the multiple carriers. Selecting those carriers whose CBR satisfies the condition, and selecting the carriers to be used among the carriers satisfying the conditions, the conditions described herein, that is, the difference between the filtered CBR of the carriers and the filtered CBR of the first carrier exceeds the A threshold.
  • the carrier selection in the multiple carriers includes: if the filtered CBR of the first carrier, and the filtered difference between the CBR of the second carrier exceeds the first threshold, and the filtering After the CBR of the first carrier is greater than the second threshold, carrier selection is performed on the plurality of carriers according to the CBR of the multiple carriers.
  • the difference between the filtered CBR of the first carrier and the filtered CBR of the second carrier exceeds the first threshold, and the filtered CBR of the first carrier is less than or equal to the second threshold, Selecting the first carrier as the carrier to be used; or
  • the carrier selection is performed in the carrier after the filtering CBR is less than or equal to the second threshold.
  • the difference between the filtered CBR of the first carrier and the filtered CBR of the second carrier does not exceed the first threshold.
  • the carrier selection in the multiple carriers including:
  • the first carrier is selected as the carrier to be used.
  • the difference between the filtered CBR of the first carrier and the filtered CBR of the second carrier does not exceed the first threshold, select any one of the multiple carriers as the carrier to be used. ;or,
  • the method is performed by the terminal device, and before determining whether the difference between the CBR of the filtered first carrier and the CBR of the filtered second carrier exceeds a first threshold, the method further includes: The device acquires the first threshold pre-configured in the terminal device; or the terminal device receives configuration information sent by the network device, where the configuration information includes the first threshold.
  • the method is performed by the network device, the method further includes: the network device sending configuration information to the terminal device, where the configuration information includes the first threshold.
  • a corresponding C_resel is configured on each of the multiple carriers, where the CBR of the filtered first carrier and the CBR of the filtered second carrier are determined when the value of the C_resel is equal to 0.
  • Whether the difference between the values exceeds the first threshold includes: determining that the value of C_resel corresponding to the carrier (the first carrier) used by the current data transmission is equal to 0 among the plurality of C_resels configured on the plurality of carriers Whether the difference between the CBR of the first carrier and the filtered CBR of the second carrier exceeds the first threshold.
  • the same C_resel is configured on the multiple carriers, where when the value of C_resel is equal to 0, the difference between the CBR of the filtered first carrier and the CBR of the filtered second carrier is determined. Whether the difference between the CBR of the filtered first carrier and the CBR of the filtered second carrier exceeds the first time, if the value of the same C_resel is equal to 0, A threshold.
  • the method for carrier selection in the embodiments of the present application may be applied to a terminal device that uses different transmission modes, such as the foregoing transmission mode 3 or transmission mode 4.
  • the network device may perform carrier selection based on the foregoing method and notify the terminal device; when the terminal device uses the transmission mode 4, the terminal device may autonomously perform carrier selection by using the foregoing method.
  • the detailed process of the carrier selection of the network device may refer to the process of selecting the carrier by the foregoing terminal device. For brevity, no further details are provided herein.
  • FIG. 5 is a schematic flowchart of a method for carrier selection according to another embodiment of the present application.
  • the method shown in FIG. 5 can be performed by a communication device, which includes a terminal device or a network device, which can be, for example, the terminal device 20 or the terminal device 30 shown in FIG. 2, which can be, for example, FIG. Or the network device 10 shown in FIG. 2.
  • a communication device which includes a terminal device or a network device, which can be, for example, the terminal device 20 or the terminal device 30 shown in FIG. 2, which can be, for example, FIG. Or the network device 10 shown in FIG. 2.
  • the method for selecting the carrier includes:
  • the first carrier is a carrier used by the current data transmission, and the second carrier is any carrier of the multiple carriers except the first carrier;
  • the terminal device acquires the CBR measurement result of the candidate multiple carriers, and calculates a CBR difference between the CBR of the first carrier used by the current data transmission and the other carrier, when the CBR of the first carrier is any other
  • the terminal device is triggered to perform carrier selection.
  • the terminal device may select a carrier to be used according to the CBR of the multiple carriers. If the selected carrier to be used is the same as the carrier currently used by the terminal device, carrier switching may not be performed, otherwise carrier switching is performed.
  • the number of candidate multiple carriers is N, and N is a positive integer greater than or equal to 2.
  • the respective CBR measurements of the N carriers are denoted as CBR1, BCR2, ..., CBRN, respectively. It is assumed that the CBR of the carrier used by the current terminal device is CBR1.
  • B is a preset threshold, and the terminal device is triggered to perform carrier selection, for example, The terminal device measures the CBR of the N carriers, and selects, according to the obtained CBR of the N carriers, the carrier with the smallest CBR from the N carriers as the carrier to be used.
  • the CBR of each of the multiple carriers is a CBR of a resource pool used by the terminal device on each carrier.
  • Carrier selection including:
  • the carrier whose difference between the CBR and the CBR of the first carrier exceeds the first threshold In the middle, one carrier is selected as the carrier to be used.
  • those carriers whose CBR meets the condition may be selected among the multiple carriers, and the condition is met.
  • the carriers to be used are selected among the carriers, and the conditions described herein, that is, the difference between the CBR of the carriers and the CBR of the first carrier exceeds a first threshold.
  • the resource pool used by the terminal device on each carrier is a resource pool corresponding to an area (ie, a geographic area) where the terminal is located, where the multiple resource pools and multiple areas are There is a correspondence between them.
  • a plurality of geographical areas may be divided, and the plurality of geographical areas have a corresponding relationship with the plurality of resource pools, and the resource pool used by the terminal device to transmit data on each carrier is the current geographic location with the terminal device.
  • the resource pool corresponding to the zone.
  • the CBR measured by the terminal device is the CBR of the resource pool, that is, the CBR measured by the terminal device is the CBR of the channel resource in the resource pool.
  • the resource pool used in each carrier may also be different.
  • the CBR of the candidate multiple carriers is obtained, where the terminal device measures the CBR of the multiple carriers to obtain the CBR of the multiple carriers.
  • the CBR of the candidate multiple carriers is obtained, where the terminal device receives the broadcast message sent by the network device, where the broadcast message carries the candidate multiple carriers.
  • the method when the method is performed by the terminal device, before the 520, that is, before determining whether the difference between the CBR of the first carrier and the CBR of the second carrier exceeds the first threshold, the method further includes: the terminal device Obtaining the first threshold pre-configured in the terminal device; or receiving, by the terminal device, configuration information sent by the network device, where the configuration information includes the first threshold.
  • the CBR of the candidate multiple carriers is obtained, where the network device receives the CBR of the multiple carriers reported by the terminal device.
  • performing carrier selection on the multiple carriers including: if the first carrier Carrier selection is performed among the plurality of carriers by the difference between the CBR and the CBR of the second carrier exceeding a first threshold and continuing for a preset duration.
  • the difference between the CBR of the carrier and the CBR of the second carrier exceeds the first threshold, performing carrier selection on the multiple carriers, including: if the first carrier The difference between the CBR and the CBR of the second carrier exceeds a first threshold, and the CBR of the first carrier is greater than a second threshold, and carrier selection is performed in the multiple carriers.
  • the first carrier is selected to be used. Carrier; or,
  • the CBR of the first carrier and the CBR of the second carrier exceeds the first threshold, and the CBR of the first carrier is less than or equal to the second threshold, then the CBR is less than or equal to the second Carrier selection is performed in the carrier of the threshold.
  • the first carrier is selected as the carrier to be used.
  • any one of the multiple carriers is selected as the carrier to be used;
  • the network device may perform carrier selection and notify the terminal device according to the foregoing method; when the terminal device uses the transmission mode 4, the terminal device may autonomously perform carrier selection by using the foregoing method.
  • the detailed process of the carrier selection of the network device may refer to the process of selecting the carrier by the foregoing terminal device. For brevity, no further details are provided herein.
  • the resource pool used by the terminal device on each carrier is a resource pool corresponding to an area (ie, a geographical area) where the terminal is located in the plurality of resource pools, where the multiple resource pools There is a correspondence between multiple regions.
  • a plurality of geographical areas may be divided, and the plurality of geographical areas have a corresponding relationship with the plurality of resource pools, and the resource pool used by the terminal device to transmit data on each carrier is the current geographic location with the terminal device.
  • the resource pool corresponding to the zone.
  • the CBR measured by the terminal device is the CBR of the resource pool, that is, the CBR measured by the terminal device is the CBR of the channel resource in the resource pool.
  • the resource pool used in each carrier may also be different.
  • the corresponding relationship between the multiple geographic regions and the multiple resource pools may be represented by, for example, a mapping table, a formula, or the like, which is not limited in the embodiment of the present application.
  • one geographic area may correspond to one or more resource pools, and one resource pool may also correspond to one or more geographical areas, or the plurality of geographical areas may have a one-to-one correspondence with multiple resource pools.
  • the CBR of the candidate multiple carriers is obtained, where the terminal device measures the CBR of the multiple carriers to obtain the CBR of the multiple carriers.
  • the network device may perform carrier selection on the multiple carriers according to the CBR of the multiple carriers reported by the terminal device when the value of C_resel is equal to 0.
  • performing carrier selection on the multiple carriers according to the CBR of the multiple carriers including: selecting a carrier with a minimum CBR as the to-be-used among the multiple carriers according to the CBR of the multiple carriers Carrier.
  • the network device may perform carrier selection and notify the terminal device according to the foregoing method; when the terminal device uses the transmission mode 4, the terminal device may autonomously perform carrier selection by using the foregoing method.
  • the terminal device may perform carrier selection and notify the terminal device according to the foregoing method; when the terminal device uses the transmission mode 4, the terminal device may autonomously perform carrier selection by using the foregoing method.
  • carrier selection is performed on the plurality of carriers according to the CBR of the plurality of carriers.
  • the resource pool used by the terminal device on each carrier is a resource pool corresponding to an area (ie, a geographical area) where the terminal is located in the plurality of resource pools, where the multiple resource pools There is a correspondence between multiple regions.
  • a plurality of geographical areas may be divided, and the plurality of geographical areas have a corresponding relationship with the plurality of resource pools, and the resource pool used by the terminal device to transmit data on each carrier is the current geographic location with the terminal device.
  • the resource pool corresponding to the zone.
  • the CBR measured by the terminal device is the CBR of the resource pool, that is, the CBR measured by the terminal device is the CBR of the channel resource in the resource pool.
  • the resource pool used in each carrier may also be different.
  • x 1 Floor(x/L)Mod Nx
  • Zone_id y1 ⁇ Nx+x1;
  • the CBR of each carrier may change rapidly as the location of the terminal device changes, or changes with time, it is determined whether to perform carrier selection based on the location movement of the terminal device, and only in the geographical area where the terminal device is located.
  • the carrier selection is performed when the change occurs, thereby reducing the frequency of carrier switching and ensuring the stability of the system.
  • acquiring CBRs of the candidate multiple carriers includes: the terminal device performing measurement on the CBRs of the multiple carriers to obtain CBRs of the multiple carriers.
  • the CBR of the candidate multiple carriers is obtained by the terminal device, where the terminal device receives the broadcast message sent by the network device, where the broadcast message carries the candidate multiple carriers. CBR.
  • performing carrier selection on the multiple carriers according to the CBR of the multiple carriers including: selecting a carrier with a minimum CBR as the to-be-used among the multiple carriers according to the CBR of the multiple carriers Carrier.
  • the embodiment of the present application further provides three specific methods for selecting a carrier device or a network device for carrier selection.
  • carrier selection is performed on the plurality of carriers according to the CBR of the multiple carriers.
  • Carrier selection including:
  • the difference between the CBR of the first carrier and the CBR of the second carrier exceeds the first threshold, the difference between the CBR of the CBR and the first carrier exceeds the first threshold according to the CBR of the multiple carriers.
  • the carriers one carrier is selected as the carrier to be used.
  • those carriers whose CBR meets the condition may be selected among the multiple carriers, and are satisfied.
  • the carriers to be used are selected among the carriers of the condition, and the conditions described herein, that is, the difference between the CBR of the carriers and the CBR of the first carrier exceeds the first threshold.
  • the method when the method is performed by the terminal device, before determining whether the difference between the CBR of the first carrier and the CBR of the second carrier exceeds the first threshold, the method further includes: acquiring, by the terminal device, the pre-configuration The first threshold in the terminal device; or the terminal device receives configuration information sent by the network device, where the configuration information includes the first threshold.
  • the method when the method is performed by the network device, the method further includes: the network device sending configuration information to the terminal device, where the configuration information includes the first threshold.
  • the number of candidate multiple carriers is N, and N is a positive integer greater than or equal to 2.
  • the respective CBR measurements of the N carriers are denoted as CBR1, BCR2, ..., CBRN, respectively. It is assumed that the CBR of the carrier used by the current terminal device is CBR1. If the terminal device moves from the first region to the second region, for any CBRk of the N CBRs, if
  • a threshold value triggers the terminal device to perform carrier selection. For example, the terminal device measures the CBR of the N carriers, and selects the carrier with the smallest CBR from the N carriers as the carrier to be used according to the obtained CBR of the N carriers. .
  • 720 if a difference between a CBR of the first carrier and a CBR of the second carrier exceeds a first threshold, performing carrier on the multiple carriers according to CBR of the multiple carriers.
  • the method includes: if the difference between the CBR of the first carrier and the CBR of the second carrier exceeds the first threshold and continues for a preset duration, according to the CBR of the multiple carriers, in the multiple carriers Perform carrier selection.
  • Performing carrier selection in the carrier includes: if the difference between the CBR of the first carrier and the CBR of the second carrier exceeds the first threshold and continues for a preset duration, according to the CBR of the multiple carriers, In a carrier in which the difference between the CBR and the CBR of the first carrier exceeds the first threshold, one carrier is selected as the carrier to be used.
  • the CBR may be selected to satisfy the condition among the multiple carriers.
  • Those carriers, and the carriers to be used are selected among the carriers that satisfy the condition, that is, the condition that the difference between the CBR of the carriers and the CBR of the first carrier exceeds the first threshold.
  • 720 if a difference between a CBR of the first carrier and a CBR of the second carrier exceeds a first threshold, performing carrier on the multiple carriers according to CBR of the multiple carriers And selecting, if the difference between the CBR of the first carrier and the CBR of the second carrier exceeds the first threshold, and the CBR of the first carrier is greater than a second threshold, according to the CBR of the multiple carriers Carrier selection is performed among the plurality of carriers.
  • the carrier selection is performed, for example, the carrier with the smallest CBR is selected as the carrier to be used.
  • the multiple Carrier selection in the carrier including:
  • the first carrier is selected to be used. Carrier; or
  • the CBR of the first carrier and the CBR of the second carrier exceeds the first threshold, and the CBR of the first carrier is less than or equal to the second threshold, then the CBR is less than or equal to the second Carrier selection is performed in the carrier of the threshold.
  • the method further includes:
  • the first carrier is selected as the carrier to be used.
  • the difference between the CBR of the first carrier and the CBR of the second carrier does not exceed the first threshold, select any one of the multiple carriers as the carrier to be used; or
  • the carrier with the smallest CBR is selected as the carrier to be used among the multiple carriers.
  • the method further includes: performing filtering processing on the CBRs of the multiple carriers to obtain the filtered CBR of the plurality of carriers;
  • performing carrier selection on the plurality of carriers according to the CBR of the multiple carriers includes: performing carrier selection on the plurality of carriers according to the filtered CBR of the multiple carriers.
  • the CBR measurement result of the multiple carriers is filtered, and based on the filtered CBR of the multiple carriers, the filtered Carrier selection is performed in each carrier, so that carrier selection is reduced, carrier switching frequency is reduced, and system stability is ensured.
  • performing filtering processing on the CBRs of the multiple carriers includes: performing smoothing filtering on the CBRs of the multiple carriers.
  • the manner of smoothing filtering is not limited in the embodiment of the present application.
  • CBR_new is the CBR of each carrier after filtering
  • CBR_current is the CBR of each carrier before filtering
  • CBR_old is the CBR of each carrier after filtering on the previous carrier selection
  • a is the filter coefficient and 0 ⁇ a ⁇ 1.
  • performing carrier selection on the multiple carriers according to the CBR of the multiple carriers including: selecting a filtered CBR minimum among the multiple carriers according to the filtered CBR of the multiple carriers.
  • the carrier is used as the carrier to be used.
  • the method further includes: performing filtering processing on the CBRs of the multiple carriers to obtain the filtered CBR of the plurality of carriers;
  • the first carrier is a carrier used by the current data transmission
  • the second carrier is any carrier of the multiple carriers except the first carrier
  • the multiple carriers Carrier selection is performed.
  • the multiple The measurement result of the CBR of the carrier is filtered, and based on the CBR of the plurality of carriers after the filtering process, the carrier is selected in the multiple carriers, thereby reducing carrier switching frequency and ensuring carrier selection while ensuring carrier selection.
  • the stability of the system when the geographical area where the terminal device is located changes, whether the carrier selection is performed according to the difference between the current carrier and the CBR of the other carrier, and when the CBR difference meets the condition, the multiple The measurement result of the CBR of the carrier is filtered, and based on the CBR of the plurality of carriers after the filtering process, the carrier is selected in the multiple carriers, thereby reducing carrier switching frequency and ensuring carrier selection while ensuring carrier selection.
  • the CBR is configured to perform carrier selection on the multiple carriers, including: if the filtered difference between the CBR of the first carrier and the filtered CBR of the second carrier exceeds the first threshold, according to filtering After the CBR of the multiple carriers, in the carrier where the difference between the filtered CBR and the CBR of the first carrier exceeds the first threshold, one carrier is selected as the carrier to be used.
  • the method for filtering is not limited in the embodiment of the present application.
  • the CBR of multiple carriers may be smooth filtered.
  • CBR_new is the CBR of each carrier after filtering
  • CBR_current is the CBR of each carrier before filtering
  • CBR_old is the CBR of each carrier after filtering on the previous carrier selection
  • a is the filter coefficient and 0 ⁇ a ⁇ 1.
  • Performing carrier selection on the plurality of carriers includes: if the difference between the filtered CBR of the first carrier and the filtered CBR of the second carrier exceeds the first threshold and continues for a preset duration, Carrier selection is performed on the plurality of carriers based on the CBR of the plurality of carriers.
  • the carrier selection is performed based on the filtered CBR of the multiple carriers. For example, the carrier with the smallest CBR after filtering is selected as the carrier to be used.
  • the carrier selection in the multiple carriers includes: if the filtered CBR of the first carrier, and the filtered difference between the CBR of the second carrier exceeds the first The threshold is continued for a preset duration, and according to the filtered CBR of the multiple carriers, one carrier is selected as the carrier to be used in the carrier where the difference between the filtered CBR and the CBR of the first carrier exceeds the first threshold.
  • the multiple carriers may be in the multiple carriers. Selecting those carriers whose CBR satisfies the condition, and selecting the carriers to be used among the carriers satisfying the conditions, the conditions described herein, that is, the difference between the filtered CBR of the carriers and the filtered CBR of the first carrier exceeds the A threshold.
  • Performing carrier selection including: if the difference between the filtered CBR of the first carrier and the filtered CBR of the second carrier exceeds the first threshold, and the filtered CBR of the first carrier is greater than the first
  • the second threshold is based on the filtered CBR of the plurality of carriers, and carrier selection is performed on the plurality of carriers.
  • the carrier selection is performed based on the filtered CBR of the multiple carriers. For example, the carrier with the smallest CBR after filtering is selected as the carrier to be used.
  • the difference between the filtered CBR of the first carrier and the filtered CBR of the second carrier exceeds the first threshold, and the filtered CBR of the first carrier is less than or equal to the second threshold, Selecting the first carrier as the carrier to be used; or
  • the carrier selection is performed in the carrier after the filtering CBR is less than or equal to the second threshold.
  • the terminal device When the location is moved from the first area to the second area, carrier selection is performed on the multiple carriers according to the CBR of the multiple carriers, including:
  • the first carrier is a carrier used by the current data transmission
  • the second carrier is any carrier of the multiple carriers except the first carrier
  • the first carrier is selected as the carrier to be used.
  • the difference between the filtered CBR of the first carrier and the filtered CBR of the second carrier does not exceed the first threshold, select any one of the multiple carriers as the carrier to be used. ;or,
  • the difference between the filtered CBR of the first carrier and the filtered CBR of the second carrier does not exceed the first threshold, selecting the carrier with the smallest CBR after filtering as the to-be-filtered Carrier used.
  • performing carrier selection on the multiple carriers according to the CBR of the multiple carriers including: selecting a filtered CBR minimum among the multiple carriers according to the filtered CBR of the multiple carriers.
  • the carrier is used as the carrier to be used.
  • the method for carrier selection in the embodiments of the present application may be applied to a terminal device that uses different transmission modes, such as the foregoing transmission mode 3 or transmission mode 4.
  • the network device may perform carrier selection and notify the terminal device according to the foregoing method; when the terminal device uses the transmission mode 4, the terminal device may autonomously perform carrier selection by using the foregoing method.
  • the detailed process of the carrier selection of the network device may refer to the process of selecting the carrier by the foregoing terminal device. For brevity, no further details are provided herein.
  • the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be implemented in the present application.
  • the implementation of the examples constitutes any limitation.
  • FIG. 8 is a schematic block diagram of a communication device 800 in accordance with an embodiment of the present application.
  • the communication device 800 includes an acquisition unit 810, a filtering unit 820, and a carrier selection unit 830. among them:
  • the obtaining unit 810 is configured to acquire a channel occupancy ratio CBR of the candidate multiple carriers.
  • the filtering unit 820 is configured to perform filtering processing on the CBRs of the multiple carriers that are obtained by the acquiring unit 810, to obtain CBRs of the filtered multiple carriers.
  • the carrier selecting unit 830 is configured to perform carrier selection on the multiple carriers according to the CBR of the multiple carriers filtered by the filtering unit 820.
  • the filtering unit 820 is specifically configured to perform smoothing filtering on the CBRs of the multiple carriers.
  • the communication device further includes: a determining unit, configured to: determine whether a difference between a CBR of the filtered first carrier and a CBR of the filtered second carrier exceeds a first threshold, where The first carrier is a carrier used for current data transmission, and the second carrier is any carrier of the multiple carriers except the first carrier;
  • the carrier selecting unit 830 is specifically configured to: if the difference between the filtered CBR of the first carrier and the filtered CBR of the second carrier exceeds the first threshold, according to the Filtering the CBR of the plurality of carriers, performing carrier selection on the plurality of carriers.
  • the carrier selecting unit 830 is specifically configured to: if the filtered CBR of the first carrier, and the filtered difference between the CBR of the second carrier exceeds the first threshold, Then, according to the filtered CBR of the multiple carriers, in the carrier where the difference between the CBR and the CBR of the first carrier exceeds the first threshold, one carrier is selected as the carrier to be used.
  • the communication device is a terminal device, and the terminal device includes a transceiver unit, where the acquiring unit 810 is further configured to: acquire the first threshold pre-configured in the terminal device; The transceiver unit receives configuration information sent by the network device, where the configuration information includes the first threshold.
  • the communication device is a network device
  • the network device includes a transceiver unit, where the transceiver unit is configured to: send configuration information to the terminal device, where the configuration information includes the first threshold.
  • the carrier selecting unit 830 is specifically configured to: if the filtered CBR of the first carrier, and the filtered difference between the CBR of the second carrier exceeds the first threshold, For a preset duration, carrier selection is performed among the plurality of carriers according to the CBR of the multiple carriers.
  • the carrier selecting unit 830 is specifically configured to: if the filtered CBR of the first carrier, and the filtered difference between the CBR of the second carrier exceeds the first threshold, For a preset duration, the carrier is selected as the carrier to be used, according to the filtered CBR of the multiple carriers, in the carrier where the difference between the filtered CBR and the CBR of the first carrier exceeds the first threshold.
  • the carrier selecting unit 830 is specifically configured to: if the filtered CBR of the first carrier, and the filtered difference between the CBR of the second carrier exceeds the first threshold, And the CBR of the filtered first carrier is greater than the second threshold, and the carrier is selected in the multiple carriers according to the CBR of the multiple carriers.
  • the carrier is used as the carrier to be used.
  • the carrier selecting unit 830 is specifically configured to: when the value of the resource reselection counter C_resel is equal to 0, perform carrier selection on the multiple carriers according to the filtered CBR of the multiple carriers.
  • a corresponding C_resel is configured on each of the multiple carriers, where the carrier selecting unit 830 is specifically configured to: when multiple C_resels configured on the multiple carriers are combined with current data transmission When the value of C_resel corresponding to the used carrier is equal to 0, carrier selection is performed on the plurality of carriers according to the filtered CBR of the plurality of carriers.
  • the same C_resel is configured on the multiple carriers, where the carrier selecting unit 830 is specifically configured to: when the value of the same C_resel is equal to 0, according to the filtered multiple carriers CBR, performing carrier selection on the plurality of carriers.
  • the communication device is a network device
  • the network device includes a transceiver unit, where the transceiver unit is configured to: send configuration information to the terminal device, where the configuration information includes the first threshold.
  • the carrier selecting unit 830 is specifically configured to: if the filtered CBR of the first carrier, and the filtered difference between the CBR of the second carrier exceeds the first threshold, For a preset duration, carrier selection is performed among the plurality of carriers according to the CBR of the multiple carriers.
  • the carrier selecting unit 830 is specifically configured to: the difference between the filtered CBR of the first carrier and the filtered CBR of the second carrier exceeds the first
  • the threshold is selected according to the filtered CBR of the multiple carriers, and the carrier that is used by the filtered CBR and the CBR of the first carrier exceeds the first threshold, and selects one carrier as the carrier to be used.
  • the carrier selecting unit 830 is specifically configured to: if the filtered CBR of the first carrier, and the filtered difference between the CBR of the second carrier exceeds the first threshold, And the CBR of the filtered first carrier is greater than the second threshold, and the carrier is selected in the multiple carriers according to the CBR of the multiple carriers.
  • the carrier selecting unit 830 is specifically configured to: if the CBR of the filtered first carrier and the filtered CBR of the second carrier do not exceed the first a threshold, the first carrier is selected as the carrier to be used; or
  • any one of the multiple carriers is selected as Carrier to be used; or,
  • the carrier is used as the carrier to be used.
  • the carrier selecting unit 830 is specifically configured to: select, according to the filtered CBR of the multiple carriers, a carrier with a minimum CBR after filtering as a carrier to be used.
  • the communication device is a terminal device
  • the acquiring unit 810 is specifically configured to: measure CBRs of the multiple carriers to obtain CBRs of the multiple carriers.
  • the communication device is a terminal device, and the terminal device further includes a transceiver unit, where the acquiring unit 810 is specifically configured to: receive, by the transceiver unit, a broadcast message sent by the network device, where the broadcast message is carried in the broadcast message.
  • the acquiring unit 810 is specifically configured to: receive, by the transceiver unit, a broadcast message sent by the network device, where the broadcast message is carried in the broadcast message.
  • the broadcast message is carried in the broadcast message.
  • the communication device is a network device
  • the acquiring unit 810 is specifically configured to: receive, by using the transceiver unit, the CBR of the multiple carriers reported by the terminal device.
  • the process of selecting the carrier is not related to the resource retention probability ProbResourceKeep parameter.
  • the CBR of each of the multiple carriers is a CBR of a resource pool used by the terminal device on each of the carriers.
  • the resource pool used by the terminal device on each of the carriers is a resource pool corresponding to the area where the terminal is located in the multiple resource pools, where the multiple resource pools and multiple resources pools There is a correspondence between the regions.
  • the communication device 800 can perform the corresponding operations of the method 400 performed by the communication device in the foregoing method embodiment, and details are not described herein for brevity.
  • FIG. 9 is a schematic block diagram of a communication device 900 in accordance with an embodiment of the present application.
  • the communication device 900 includes an acquisition unit 910, a determination unit 920, and a carrier selection unit 930. among them:
  • the obtaining unit 910 is configured to acquire a channel occupancy ratio CBR of the candidate multiple carriers.
  • the determining unit 920 is configured to determine whether a difference between a CBR of the first carrier and a CBR of the second carrier exceeds a first threshold, where the first carrier is a carrier used for current data transmission, and the second The carrier is any one of the plurality of carriers except the first carrier;
  • a carrier selecting unit 930 configured to perform carrier in the multiple carriers acquired by the acquiring unit 910, when a difference between a CBR of the first carrier and a CBR of the second carrier exceeds a first threshold Select.
  • the carrier selecting unit 930 is specifically configured to: if the difference between the CBR of the first carrier and the CBR of the second carrier exceeds a first threshold, according to the CBR of the multiple carriers In the carrier where the difference between the CBR and the CBR of the first carrier exceeds the first threshold, one carrier is selected as the carrier to be used.
  • the carrier selecting unit 930 is specifically configured to: if the difference between the CBR of the first carrier and the CBR of the second carrier exceeds a first threshold and continues for a preset duration, according to the multiple The CBR of each carrier performs carrier selection in the plurality of carriers.
  • the carrier selecting unit 930 is specifically configured to: if the difference between the CBR of the first carrier and the CBR of the second carrier exceeds the first threshold, according to the multiple The CBR of the carrier selects one carrier as the carrier to be used in the carrier where the difference between the CBR and the CBR of the first carrier exceeds the first threshold.
  • the carrier selecting unit 930 is specifically configured to: if a difference between a CBR of the first carrier and a CBR of the second carrier exceeds a first threshold, and a CBR of the first carrier is greater than a first And a second threshold, wherein the carrier selection is performed in the multiple carriers according to the CBR of the multiple carriers.
  • the carrier selecting unit 930 is specifically configured to: if a difference between a CBR of the first carrier and a CBR of the second carrier exceeds the first threshold, and the first carrier If the CBR is less than or equal to the second threshold, the first carrier is selected as the carrier to be used; or
  • the carrier selecting unit 930 is further configured to: if the difference between the CBR of the first carrier and the CBR of the second carrier does not exceed the first threshold, select the first a carrier is used as a carrier to be used; or, if a difference between a CBR of the first carrier and a CBR of the second carrier does not exceed the first threshold, selecting among the multiple carriers Any one carrier is used as the carrier to be used; or if the difference between the CBR of the first carrier and the CBR of the second carrier does not exceed the first threshold, then in the multiple carriers The carrier with the smallest CBR after filtering is selected as the carrier to be used.
  • the determining unit 920 is specifically configured to: when the value of the resource reselection counter C_resel is equal to 0, determine whether a difference between a CBR of the first carrier and a CBR of the second carrier exceeds The first threshold is described.
  • a corresponding C_resel is configured on each of the multiple carriers, where the determining unit 920 is specifically configured to: when multiple C_resels configured on the multiple carriers are associated with a current data transmission station When the value of C_resel corresponding to the used carrier is equal to 0, it is determined whether the difference between the filtered CBR of the first carrier and the filtered CBR of the second carrier exceeds the first threshold.
  • the same C_resel is configured on the multiple carriers, where the determining unit 920 is specifically configured to: when the value of the same C_resel is equal to 0, determine the CBR of the filtered first carrier. And whether a difference between the filtered CBR of the second carrier exceeds the first threshold.
  • the carrier selecting unit 930 is specifically configured to: select, according to the CBR of the multiple carriers, a carrier with a minimum CBR among the multiple carriers as a carrier to be used.
  • the terminal device includes a transceiver unit, where the acquiring unit 910 is specifically configured to: acquire the first threshold pre-configured in the terminal device; or receive, by using the transceiver unit, a network device to send Configuration information, the configuration information including the first threshold.
  • the communication device is a network device, and the network device includes a transceiver unit, where the acquiring unit 910 is specifically configured to: receive, by using the transceiver unit, the multiple carriers reported by the terminal device. CBR.
  • the resource pool used by the terminal device on each of the carriers is a resource pool corresponding to the area where the terminal is located in the multiple resource pools, where the multiple resource pools and multiple resources pools There is a correspondence between the regions.
  • the communication device 900 can perform the corresponding operations of the method 500 performed by the communication device in the foregoing method embodiment. For brevity, no further details are provided herein.
  • FIG. 10 is a schematic block diagram of a communication device 1000 in accordance with an embodiment of the present application.
  • the communication device 1000 includes an acquisition unit 1010 and a carrier selection unit 1020. among them:
  • the obtaining unit 1010 is configured to acquire a channel occupancy ratio CBR of the candidate multiple carriers.
  • the same C_resel is configured on the multiple carriers, where the carrier selecting unit 1020 is specifically configured to: when the value of the same C_resel is equal to 0, according to the CBR of the multiple carriers, Carrier selection is performed among the plurality of carriers.
  • the communication device is a terminal device
  • the acquiring unit 1010 is specifically configured to: measure CBRs of the multiple carriers to obtain CBRs of the multiple carriers.
  • the communication device is a network device, and the network device includes a transceiver unit, where the acquiring unit 1010 is specifically configured to: receive, by using the transceiver unit, a CBR of the multiple carriers reported by the terminal device.
  • the process of selecting the carrier is not related to the resource retention probability ProbResourceKeep parameter.
  • the CBR of each of the multiple carriers is a CBR of a resource pool used by the terminal device on each of the carriers.
  • the communication device 1000 can perform the corresponding operations of the method 600 performed by the communication device in the foregoing method embodiment. For brevity, no further details are provided herein.
  • FIG. 11 is a schematic block diagram of a communication device 1100 in accordance with an embodiment of the present application. As shown in FIG. 11, the communication device 1100 includes an acquisition unit 1110 and a carrier selection unit 1120. among them:
  • the carrier selecting unit 1120 is configured to perform carrier selection on the multiple carriers according to the CBR of the multiple carriers acquired by the acquiring unit 1110 when the location of the terminal device is moved from the first region to the second region.
  • the carrier selecting unit 1120 is specifically configured to: if the difference between the CBR of the first carrier and the CBR of the second carrier exceeds the first threshold, according to the multiple The CBR of the carrier selects one carrier as the carrier to be used in the carrier where the difference between the CBR and the CBR of the first carrier exceeds the first threshold.
  • the carrier selecting unit 1120 is specifically configured to: if a difference between a CBR of the first carrier and a CBR of the second carrier exceeds the first threshold and continues for a preset duration, according to The CBR of the plurality of carriers performs carrier selection in the plurality of carriers.
  • the carrier selecting unit 1120 is specifically configured to: if the difference between the CBR of the first carrier and the CBR of the second carrier exceeds the first threshold and continues for a preset duration, according to the multiple For the CBR of the carrier, in the carrier where the difference between the CBR and the CBR of the first carrier exceeds the first threshold, one carrier is selected as the carrier to be used.
  • the carrier selecting unit 1120 is specifically configured to: if a difference between a CBR of the first carrier and a CBR of the second carrier exceeds the first threshold, and the first carrier is When the CBR is greater than the second threshold, the carrier selection is performed in the multiple carriers according to the CBR of the multiple carriers.
  • the carrier selecting unit 1120 is specifically configured to: if a difference between a CBR of the first carrier and a CBR of the second carrier exceeds the first threshold, and the first carrier If the CBR is less than or equal to the second threshold, the first carrier is selected as the carrier to be used; or if the difference between the CBR of the first carrier and the CBR of the second carrier exceeds the A first threshold, and a CBR of the first carrier is less than or equal to a second threshold, and carrier selection is performed in a carrier whose CBR is less than or equal to the second threshold.
  • the carrier selecting unit 1120 is specifically configured to: if the difference between the CBR of the first carrier and the filtered CBR of the second carrier does not exceed the first threshold, select the The first carrier is used as the carrier to be used; or, if the difference between the CBR of the first carrier and the CBR of the second carrier does not exceed the first threshold, then in the multiple carriers Selecting any one carrier as the carrier to be used; or if the difference between the CBR of the first carrier and the CBR of the second carrier does not exceed the first threshold, then the multiple carriers The carrier with the smallest CBR is selected as the carrier to be used.
  • the communication device is a terminal device, and the terminal device includes a transceiver unit, where the acquiring unit 1110 is specifically configured to: acquire the first threshold pre-configured in the terminal device; or The transceiver unit receives configuration information sent by the network device, where the configuration information includes the first threshold.
  • the carrier selecting unit 1120 is specifically configured to select, according to the CBR of the multiple carriers, a carrier with a minimum CBR among the multiple carriers as a carrier to be used.
  • CBR_current is the CBR of each carrier before filtering, and
  • CBR_old is the CBR of each carrier after filtering on the previous carrier selection, a is a filter coefficient and 0 ⁇ a ⁇ 1.
  • the communication device further includes: a filtering unit, configured to: perform filtering processing on the CBRs of the multiple carriers to obtain a filtered CBR of the multiple carriers;
  • the carrier selecting unit is specifically configured to: when the location of the terminal device moves from the first region to the second region, determine a CBR of the filtered first carrier, and the filtered second carrier Whether the difference between the CBRs exceeds a first threshold, wherein the first carrier is a carrier used for current data transmission, and the second carrier is other than the first carrier of the multiple carriers If the difference between the filtered CBR of the first carrier and the filtered CBR of the second carrier exceeds the first threshold, according to the filtered multiple The CBR of the carrier performs carrier selection in the plurality of carriers.
  • the carrier selecting unit 1120 is specifically configured to: if the filtered CBR of the first carrier, and the filtered difference between the CBR of the second carrier exceeds the first threshold, Then, according to the filtered CBR of the multiple carriers, in the carrier where the difference between the CBR and the CBR of the first carrier exceeds the first threshold, one carrier is selected as the carrier to be used.
  • the filtering unit is specifically configured to perform smoothing filtering on the CBRs of the multiple carriers.
  • CBR_current is the CBR of each carrier before filtering, and
  • CBR_old is the CBR of each carrier after filtering on the previous carrier selection, a is a filter coefficient and 0 ⁇ a ⁇ 1.
  • the carrier selecting unit 1120 is specifically configured to: if the filtered CBR of the first carrier, and the filtered difference between the CBR of the second carrier exceeds the first threshold For a preset duration, the carrier is selected as the carrier to be used, according to the filtered CBR of the multiple carriers, in the carrier where the difference between the filtered CBR and the CBR of the first carrier exceeds the first threshold.
  • the carrier selecting unit 1120 is specifically configured to: if the difference between the filtered CBR of the first carrier and the filtered CBR of the second carrier exceeds the first threshold, and If the CBR of the first carrier is greater than the second threshold, carrier selection is performed in the multiple carriers according to the CBR of the multiple carriers.
  • the communication device further includes: a filtering unit, configured to: perform filtering processing on the CBRs of the multiple carriers to obtain a filtered CBR of the multiple carriers;
  • the carrier selecting unit 1120 is specifically configured to: select, according to the filtered CBR of the multiple carriers, a carrier with a minimum CBR after filtering as a carrier to be used.
  • the communication device is a terminal device
  • the acquiring unit 1110 is configured to: measure CBRs of the multiple carriers to obtain CBRs of the multiple carriers.
  • the CBR of each of the multiple carriers is a CBR of a resource pool used by the terminal device on each of the carriers.
  • the resource pool used by the terminal device on each of the carriers is a resource pool corresponding to the area where the terminal is located in the multiple resource pools, where the multiple resource pools and multiple resources pools There is a correspondence between the regions.
  • the communication device 1000 can perform the corresponding operations of the method 700 performed by the communication device in the foregoing method embodiment. For brevity, no further details are provided herein.
  • the processor 1210 can call the program code stored in the memory 1230 to perform the corresponding operations of the method 700 performed by the communication device in the method embodiment.
  • the processor 1210 can call the program code stored in the memory 1230 to perform the corresponding operations of the method 700 performed by the communication device in the method embodiment.
  • the steps of the method disclosed in the embodiments of the present application may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method.
  • FIG. 13 is a schematic structural diagram of a system chip according to an embodiment of the present application.
  • the system chip 1300 of FIG. 13 includes an input interface 1301, an output interface 1302, at least one processor 1303, and a memory 1304.
  • the input interface 1301, the output interface 1302, the processor 1303, and the memory 1304 are interconnected by an internal connection path.
  • the processor 1303 is configured to execute code in the memory 1304.
  • the processor 1303 can implement the method 400 performed by the communication device in a method embodiment. For the sake of brevity, it will not be repeated here.
  • the processor 1303 can implement the method 700 performed by the communication device in the method embodiment. For the sake of brevity, it will not be repeated here.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or may be Integrate into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present application which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes.

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Abstract

本申请公开了一种载波选取的方法和通信设备,该方法包括:获取候选的多个载波的信道占用比率CBR;对所述多个载波的CBR进行滤波处理,以获得滤波后的所述多个载波的CBR;根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取。因此,通过对多个载波的CBR的测量结果进行滤波处理,并基于滤波处理后的该多个载波的CBR,在该多个载波中进行载波选取,从而在实现载波选取的同时,降低了载波切换的频率,保证了系统的稳定性。

Description

载波选取的方法和通信设备
本申请要求于2017年9月15日提交中国专利局,申请号PCT/CN2017/101903,发明名称为“载波选取的方法和通信设备”的PCT专利申请的优先权,其全部内容通过引用合并于此。
本申请要求于2017年9月27日提交中国专利局,申请号PCT/CN2017/103819,发明名称为“载波选取的方法和通信设备”的PCT专利申请的优先权,其全部内容通过引用合并于此。
技术领域
本申请实施例涉及无线通信领域,并且更具体地,涉及一种的载波选取的方法和通信设备。
背景技术
车联网或称车到设备(Vehicle to Everything,V2X)通信系统是基于设备对设备(Device to Device,D2D)通信的一种侧行链路(Sidelink,SL)传输技术,与传统的长期演进(Long Term Evolution,LTE)系统中通过基站接收或者发送数据的方式不同,车联网系统采用终端到终端直接通信的方式,因此具有更高的频谱效率和更低的传输时延。
在支持多载波传输的车联网系统中,终端设备可以使用候选的多个载波中的一个或多个载波进行当前的数据传输。因此,终端设备或基站如何进行载波选取成为急需解决的问题。
发明内容
本申请实施例提供了一种载波选取的方法和通信设备,该通信设备能够有效地进行载波选取,同时保持系统的稳定性。
第一方面,提供了一种载波选取的方法,包括:获取候选的多个载波的信道占用比率CBR;对所述多个载波的CBR进行滤波处理,以获得滤波后的所述多个载波的CBR;根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取。
因此,通过对多个载波的CBR的测量结果进行滤波处理,并基于滤波处理后的该多个载波的CBR,在该多个载波中进行载波选取,从而在实现载波选取的同时,降低了载波切换的频率,保证了系统的稳定性。
在一种可能的实现方式中,所述对所述多个载波的CBR进行滤波处理,包括:对所述多个载波的CBR进行平滑滤波。
在一种可能的实现方式中,进行所述平滑滤波后的所述多个载波中每个载波的CBR为:CBR_new=a×CBR_old+(1-a)×CBR_current,
其中,CBR_new为滤波后所述每个载波的CBR,CBR_current为滤波前所述每个载波的CBR,CBR_old为上一次载波选取时滤波后的所述每个载波的CBR,a为滤波系数且0≤a≤1。
在一种可能的实现方式中,在所述根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取之前,所述方法还包括:确定滤波后的第一载波的CBR,与滤波后的第二载波的CBR之间的差值,是否超过第一阈值,其中,所述第一载波为当前数据传输所使用的载波,所述第二载波为所述多个载波中除所述第一载波之外的任一载波;
其中,所述根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取。
该实施例中,根据当前载波与其他载波的CBR之差判断是否进行载波选取,并在CBR之差满足条件时基于滤波处理后的CBR进行载波选取,从而进一步降低了载波切换的频率,保证了系统的稳定性。
在一种可能的实现方式中,所述若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
在一种可能的实现方式中,所述方法由终端设备执行,在所述确定滤波后的第一载波的CBR,与滤波后的第二载波的CBR之间的差值,是否超过第一阈值之前,所述方法还包括:所述终端设备获取预配置在所述终端设备中的所述第一阈值;或者所述终端设备接收网络设备发送的配置信息,所述配置信息包括所述第一阈值。
在一种可能的实现方式中,所述方法由网络设备执行,所述方法还包括:所述网络设备向终端设备 发送配置信息,所述配置信息包括所述第一阈值。
在一种可能的实现方式中,所述若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值且持续预设时长,则根据所述多个载波的CBR,在所述多个载波中进行载波选取。
在一种可能的实现方式中,所述若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值且持续预设时长,则根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值且持续预设时长,则根据滤波后的所述多个载波的CBR,在滤波后CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
在一种可能的实现方式中,所述若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,且滤波后的所述第一载波的CBR大于第二阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取。
在一种可能的实现方式中,所述若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,且滤波后的所述第一载波的CBR小于或等于第二阈值,则选取所述第一载波作为待使用的载波;或者,若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,且滤波后的所述第一载波的CBR小于或等于第二阈值,则在滤波后CBR小于或等于所述第二阈值的载波中进行载波选取。
在一种可能的实现方式中,在所述根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取之前,所述方法还包括:确定滤波后的第一载波的CBR,与滤波后的第二载波的CBR之间的差值,是否超过第一阈值,其中,所述第一载波为当前数据传输所使用的载波,所述第二载波为所述多个载波中除所述第一载波之外的任一载波;
其中,所述根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,未超过所述第一阈值,则选取所述第一载波作为待使用的载波;或者,
若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,未超过所述第一阈值,则在所述多个载波中选择任意一个载波作为待使用的载波;或者,
若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,未超过所述第一阈值,则在所述多个载波中选择滤波后CBR最小的载波作为待使用的载波。
在一种可能的实现方式中,所述根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:当资源重选计数器C_resel的值等于0时,根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取。
该实施例中,进行载波选取的过程不依赖于ProbResourceKeep参数,而是基于资源重选计数器C_resel确定当前是否需要进行载波选取,并在需要进行载波选取时基于滤波处理后的CBR进行载波选,从而降低了载波切换的频率,保证了系统的稳定性。
在一种可能的实现方式中,所述多个载波中每个载波上配置有一个对应的C_resel,其中,所述当C_resel的值等于0时,根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:当所述多个载波上配置的多个C_resel中与当前数据传输所使用的载波对应的C_resel的值等于0时,根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取。
在一种可能的实现方式中,所述多个载波上配置有相同的C_resel,其中,所述当C_resel的值等于0时,根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:当所述相同的C_resel的值等于0时,根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取。
在一种可能的实现方式中,在所述根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取之前,所述方法还包括:当C_resel的值等于0时,确定滤波后的第一载波的CBR,与滤波后的第二载波的CBR之间的差值,是否超过第一阈值,其中,所述第一载波为当前数据传输所使用的载波,所述第二载波为所述多个载波中除所述第一载波之外的任一载波;
其中,所述根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据 滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取。
该实施例中,基于资源重选计数器C_resel确定当前是否需要进行载波选取,并在需要进行载波选取时判断当前载波与其他载波的CBR之差是否满足条件,并且在CBR之差满足条件时基于滤波处理后的CBR进行载波选取,从而进一步降低了载波切换的频率,保证了系统的稳定性。
在一种可能的实现方式中,所述若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在滤波后CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
在一种可能的实现方式中,所述方法由终端设备执行,在所述确定滤波后的第一载波的CBR,与滤波后的第二载波的CBR之间的差值,是否超过第一阈值之前,所述方法还包括:所述终端设备获取预配置在所述终端设备中的所述第一阈值;或者所述终端设备接收网络设备发送的配置信息,所述配置信息包括所述第一阈值。
在一种可能的实现方式中,所述方法由网络设备执行,所述方法还包括:所述网络设备向终端设备发送配置信息,所述配置信息包括所述第一阈值。
在一种可能的实现方式中,所述多个载波中每个载波上配置有一个对应的C_resel,其中,所述当所述C_resel的值等于0时,确定滤波后的第一载波的CBR,与滤波后的第二载波的CBR之间的差值,是否超过第一阈值,包括:当所述多个载波上配置的多个C_resel中与当前数据传输所使用的载波对应的C_resel的值等于0时,确定滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,是否超过所述第一阈值。
在一种可能的实现方式中,所述多个载波上配置有相同的C_resel,其中,所述当C_resel的值等于0时,确定滤波后的第一载波的CBR,与滤波后的第二载波的CBR之间的差值,是否超过第一阈值,包括:当所述相同的C_resel的值等于0时,确定滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,是否超过所述第一阈值。
在一种可能的实现方式中,所述若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值且持续预设时长,则根据所述多个载波的CBR,在所述多个载波中进行载波选取。
在一种可能的实现方式中,若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值且持续预设时长,则根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:所述若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在滤波后CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。在一种可能的实现方式中,所述若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,且滤波后的所述第一载波的CBR大于第二阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取。
在一种可能的实现方式中,所述若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,且滤波后的所述第一载波的CBR小于或等于第二阈值,则选取所述第一载波作为待使用的载波;或者,若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,且滤波后的所述第一载波的CBR小于或等于第二阈值,则在滤波后CBR小于或等于所述第二阈值的载波中进行载波选取。
在一种可能的实现方式中,在所述根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取之前,所述方法还包括:确定滤波后的第一载波的CBR,与滤波后的第二载波的CBR之间的差值,是否超过第一阈值,其中,所述第一载波为当前数据传输所使用的载波,所述第二载波为所述多个载波中除所述第一载波之外的任一载波;
其中,所述根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,未超过所述第一阈值,则选取所述第一载波作为待使用的载波;或者,
若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,未超过所述第一 阈值,则在所述多个载波中选择任意一个载波作为待使用的载波;或者,
若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,未超过所述第一阈值,则在所述多个载波中选择滤波后CBR最小的载波作为待使用的载波。
在一种可能的实现方式中,所述根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:根据滤波后的所述多个载波的CBR,在所述多个载波中选择滤波后CBR最小的载波作为待使用的载波。
在一种可能的实现方式中,所述方法由终端设备执行,所述获取候选的多个载波的CBR,包括:所述终端设备对所述多个载波的CBR进行测量,以获得所述多个载波的CBR。
在一种可能的实现方式中,所述方法由终端设备执行,所述获取候选的多个载波的CBR,包括:所述终端设备接收网络设备发送的广播消息,所述广播消息中携带候选的所述多个载波的CBR。
在一种可能的实现方式中,所述方法由网络设备执行,所述获取候选的多个载波的CBR,包括:所述网络设备接收终端设备上报的所述多个载波的CBR。
在一种可能的实现方式中,所述载波选取的过程,与资源保持概率ProbResourceKeep参数不相关。
在一种可能的实现方式中,所述多个载波中每个载波的CBR,为终端设备在所述每个载波上使用的资源池的CBR。
在一种可能的实现方式中,所述终端设备在所述每个载波上使用的资源池,为多个资源池中与所述终端所处的区域对应的资源池,其中,所述多个资源池与多个区域之间存在对应关系。
第二方面,提供了一种载波选取的方法,包括:获取候选的多个载波的信道占用比率CBR;确定第一载波的CBR与第二载波的CBR之间的差值,是否超过第一阈值,其中,所述第一载波为当前数据传输所使用的载波,所述第二载波为所述多个载波中除所述第一载波之外的任一载波;若所述第一载波的CBR与所述第二载波的CBR之间的差值,超过第一阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取。
因此,根据当前载波与其他载波的CBR之差判断是否进行载波选取,并仅在CBR之差满足条件时进行载波选取,从而降低了载波切换的频率,保证了系统的稳定性。
在一种可能的实现方式中,所述确定第一载波的CBR与第二载波的CBR之间的差值,是否超过第一阈值,包括:当资源重选计数器C_resel的值等于0时,确定所述第一载波的CBR与所述第二载波的CBR之间的差值,是否超过所述第一阈值。
该实施例中,基于资源重选计数器C_resel确定当前是否需要进行载波选取,并在需要进行载波选取时判断当前载波与其他载波的CBR之差是否满足条件,并且在CBR之差满足条件时基于不同载波的CBR进行载波选取,从而降低了载波切换的频率,保证了系统的稳定性。
在一种可能的实现方式中,所述若所述第一载波的CBR与所述第二载波的CBR之间的差值,超过第一阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:若所述第一载波的CBR与所述第二载波的CBR之间的差值,超过第一阈值,则根据所述多个载波的CBR,在CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
在一种可能的实现方式中,所述若所述第一载波的CBR与所述第二载波的CBR之间的差值,超过第一阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:若所述第一载波的CBR与所述第二载波的CBR之间的差值超过第一阈值且持续预设时长,则根据所述多个载波的CBR,在所述多个载波中进行载波选取。
在一种可能的实现方式中,所述若所述第一载波的CBR与所述第二载波的CBR之间的差值超过第一阈值且持续预设时长,则根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:若第一载波的CBR,与所述第二载波的CBR之间的差值,超过所述第一阈值,则根据所述多个载波的CBR,在CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
在一种可能的实现方式中,所述若所述第一载波的CBR与所述第二载波的CBR之间的差值,超过第一阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:若所述第一载波的CBR与所述第二载波的CBR之间的差值超过第一阈值,且所述第一载波的CBR大于第二阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取。
在一种可能的实现方式中,所述若所述第一载波的CBR与所述第二载波的CBR之间的差值超过第一阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:若所述第一载波的CBR,与所述第二载波的CBR之间的差值,超过所述第一阈值,且所述第一载波的CBR小于或等于第二阈值,则选取所述第一载波作为待使用的载波;或者,
若所述第一载波的CBR,与所述第二载波的CBR之间的差值,超过所述第一阈值,且所述第一载波的CBR小于或等于第二阈值,则在CBR小于或等于所述第二阈值的载波中进行载波选取。
在一种可能的实现方式中,所述方法还包括:若所述第一载波的CBR,与所述第二载波的CBR之间的差值,未超过所述第一阈值,则选取所述第一载波作为待使用的载波;或者,
若所述第一载波的CBR,与所述第二载波的CBR之间的差值,未超过所述第一阈值,则在所述多个载波中选择任意一个载波作为待使用的载波;或者,
若所述第一载波的CBR,与所述第二载波的CBR之间的差值,未超过所述第一阈值,则在所述多个载波中选择CBR最小的载波作为待使用的载波。
在一种可能的实现方式中,所述确定第一载波的CBR与第二载波的CBR之间的差值,是否超过第一阈值,包括:当C_resel的值等于0时,确定所述第一载波的CBR与所述第二载波的CBR之间的差值,是否超过所述第一阈值。
在一种可能的实现方式中,所述多个载波中每个载波上配置有一个对应的C_resel,其中,所述当所述C_resel的值等于0时,确定第一载波的CBR,与第二载波的CBR之间的差值,是否超过第一阈值,包括:当所述多个载波上配置的多个C_resel中与当前数据传输所使用的载波对应的C_resel的值等于0时,确定所述第一载波的CBR与所述第二载波的CBR之间的差值,是否超过所述第一阈值。
在一种可能的实现方式中,所述多个载波上配置有相同的C_resel,其中,所述当C_resel的值等于0时,确定第一载波的CBR与第二载波的CBR之间的差值,是否超过第一阈值,包括:当所述相同的C_resel的值等于0时,确定所述第一载波的CBR与所述第二载波的CBR之间的差值,是否超过所述第一阈值。
在一种可能的实现方式中,所述在所述多个载波中进行载波选取,包括:根据所述多个载波的CBR,在所述多个载波中选择CBR最小的载波作为待使用的载波。
在一种可能的实现方式中,所述方法由终端设备执行,所述获取候选的多个载波的CBR,包括:所述终端设备对所述多个载波的CBR进行测量,以获得所述多个载波的CBR。
在一种可能的实现方式中,所述方法由终端设备执行,所述获取候选的多个载波的CBR,包括:所述终端设备接收网络设备发送的广播消息,所述广播消息中携带候选的所述多个载波的CBR。
在一种可能的实现方式中,在所述确定第一载波的CBR与第二载波的CBR之间的差值,是否超过第一阈值之前,所述方法还包括:所述终端设备获取预配置在所述终端设备中的所述第一阈值;或者所述终端设备接收网络设备发送的配置信息,所述配置信息包括所述第一阈值。
在一种可能的实现方式中,所述方法由网络设备执行,所述获取候选的多个载波的CBR,包括:所述网络设备接收终端设备上报的所述多个载波的CBR。
在一种可能的实现方式中,所述方法还包括:所述网络设备向终端设备发送配置信息,所述配置信息包括所述第一阈值。
在一种可能的实现方式中,所述载波选取的过程,与资源保持概率ProbResourceKeep参数不相关。
在一种可能的实现方式中,所述多个载波中每个载波的CBR,为终端设备在所述每个载波上使用的资源池的CBR。
在一种可能的实现方式中,所述终端设备在所述每个载波上使用的资源池,为多个资源池中与所述终端所处的区域对应的资源池,其中,所述多个资源池与多个区域之间存在对应关系。
第三方面,提供了一种载波选取的方法,包括:获取候选的多个载波的信道占用比率CBR;当资源重选计数器C_resel的值等于0时,根据所述多个载波的CBR,在所述多个载波中进行载波选取。
因此,进行载波选取的过程不依赖于ProbResourceKeep参数,而是基于资源重选计数器C_resel确定当前是否需要进行载波选取,从而实现有效的载波选取,降低了系统的复杂度。
在一种可能的实现方式中,所述多个载波中每个载波上配置有一个对应的C_resel,其中,所述当C_resel的值等于0时,根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:当所述多个载波上配置的多个C_resel中与当前数据传输所使用的载波对应的C_resel的值等于0时,根据所述多个载波的CBR,在所述多个载波中进行载波选取。
在一种可能的实现方式中,所述多个载波上配置有相同的C_resel,其中,所述当C_resel的值等于0时,根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:当所述相同的C_resel的值等于0时,根据所述多个载波的CBR,在所述多个载波中进行载波选取。
在一种可能的实现方式中,所述根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:根据所述多个载波的CBR,在所述多个载波中选择CBR最小的载波作为待使用的载波。
在一种可能的实现方式中,所述方法由终端设备执行,所述获取候选的多个载波的CBR,包括:所述终端设备对所述多个载波的CBR进行测量,以获得所述多个载波的CBR。
在一种可能的实现方式中,所述方法由终端设备执行,所述获取候选的多个载波的CBR,包括:所述终端设备接收网络设备发送的广播消息,所述广播消息中携带候选的所述多个载波的CBR。
在一种可能的实现方式中,所述方法由网络设备执行,所述获取候选的多个载波的CBR,包括:所述网络设备接收终端设备上报的所述多个载波的CBR。
在一种可能的实现方式中,所述载波选取的过程,与资源保持概率ProbResourceKeep参数不相关。
在一种可能的实现方式中,所述多个载波中每个载波的CBR,为终端设备在所述每个载波上使用的资源池的CBR。
在一种可能的实现方式中,所述终端设备在所述每个载波上使用的资源池,为多个资源池中与所述终端所处的区域对应的资源池,其中,所述多个资源池与多个区域之间存在对应关系。
第四方面,提供了一种载波选取的方法,包括:获取候选的多个载波的信道占用比率CBR;当终端设备的位置由第一区域移动至第二区域时,根据所述多个载波的CBR,在所述多个载波中进行载波选取。
因此,基于终端设备的位置移动确定是否进行载波选取,并仅在终端设备所在的地理区域发生变化时进行载波选取,从而降低了载波切换的频率,保证了系统的稳定性。
在一种可能的实现方式中,所述当终端设备的位置由第一区域移动至第二区域时,根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
当终端设备的位置由第一区域移动至第二区域时,确定第一载波的CBR与第二载波的CBR之间的差值,是否超过第一阈值,其中,所述第一载波为当前数据传输所使用的载波,所述第二载波为所述多个载波中除所述第一载波之外的任一载波;
若所述第一载波的CBR,与所述第二载波的CBR之间的差值,超过所述第一阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取。
该实施例中,在终端设备所处的地理区域发生变化时,根据当前载波与其他载波的CBR之间的差值判断是否进行载波选取,并在CBR差值满足条件时进行载波选取,从而进一步降低了载波切换的频率,保证了系统的稳定性。
在一种可能的实现方式中,所述若所述第一载波的CBR,与所述第二载波的CBR之间的差值,超过所述第一阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:若所述第一载波的CBR,与所述第二载波的CBR之间的差值,超过所述第一阈值,则根据所述多个载波的CBR,在CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
在一种可能的实现方式中,所述若所述第一载波的CBR与所述第二载波的CBR之间的差值,超过第一阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:若所述第一载波的CBR与所述第二载波的CBR之间的差值,超过所述第一阈值且持续预设时长,则根据所述多个载波的CBR,在所述多个载波中进行载波选取。
在一种可能的实现方式中,所述若所述第一载波的CBR与所述第二载波的CBR之间的差值,超过所述第一阈值且持续预设时长,则根据所述多个载波的CBR,在所述多个载波中进行载波选,包括:若所述第一载波的CBR,与所述第二载波的CBR之间的差值,超过所述第一阈值且持续预设时长,则根据所述多个载波的CBR,在CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
在一种可能的实现方式中,所述若所述第一载波的CBR与所述第二载波的CBR之间的差值,超过第一阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:若所述第一载波的CBR与所述第二载波的CBR之间的差值,超过所述第一阈值,且所述第一载波的CBR大于第二阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取。
在一种可能的实现方式中,所述若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:若所述第一载波的CBR,与所述第二载波的CBR之间的差值,超过所述第一阈值,且所述第一载波的CBR小于或等于第二阈值,则选取所述第一载波作为待使用的载波;或者,
若所述第一载波的CBR,与所述第二载波的CBR之间的差值,超过所述第一阈值,且所述第一载波的CBR小于或等于第二阈值,则在CBR小于或等于所述第二阈值的载波中进行载波选取。
在一种可能的实现方式中,所述方法还包括:当终端设备的位置由第一区域移动至第二区域时,确定第一载波的CBR与第二载波的CBR之间的差值,是否超过第一阈值,其中,所述第一载波为当前数据传输所使用的载波,所述第二载波为所述多个载波中除所述第一载波之外的任一载波;
若所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,未超过所述第一阈值,则选取所述第一载波作为待使用的载波;或者,
若所述第一载波的CBR,与所述第二载波的CBR之间的差值,未超过所述第一阈值,则在所述多个载波中选择任意一个载波作为待使用的载波;或者,
若所述第一载波的CBR,与所述第二载波的CBR之间的差值,未超过所述第一阈值,则在所述多个载波中选择CBR最小的载波作为待使用的载波。
在一种可能的实现方式中,所述方法由终端设备执行,在所述确定第一载波的CBR,与的第二载波的CBR之间的差值,是否超过第一阈值之前,所述方法还包括:所述终端设备获取预配置在所述终端设备中的所述第一阈值;或者所述终端设备接收网络设备发送的配置信息,所述配置信息包括所述第一阈值。
在一种可能的实现方式中,所述方法由网络设备执行,所述方法还包括:所述网络设备向终端设备发送配置信息,所述配置信息包括所述第一阈值。
在一种可能的实现方式中,所述根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:根据所述多个载波的CBR,在所述多个载波中选择CBR最小的载波作为待使用的载波。
在一种可能的实现方式中,在所述根据所述多个载波的CBR,在所述多个载波中进行载波选取之前,所述方法还包括:对所述多个载波的CBR进行滤波处理,以获得滤波后的所述多个载波的CBR;
其中,所述当终端设备的位置由第一区域移动至第二区域时,根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:当终端设备的位置由第一区域移动至第二区域时,根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取。
该实施例中,在终端设备所处的地理区域发生变化时,通过对多个载波的CBR的测量结果进行滤波处理,并基于滤波处理后的该多个载波的CBR,在滤波后的该多个载波中进行载波选取,从而在实现载波选取的同时,降低了载波切换的频率,保证了系统的稳定性。
在一种可能的实现方式中,所述对所述多个载波的CBR进行滤波处理,包括:对所述多个载波的CBR进行平滑滤波。
在一种可能的实现方式中,进行所述平滑滤波后的所述多个载波中每个载波的CBR为:CBR_new=a×CBR_old+(1-a)×CBR_current,其中,CBR_new为滤波后所述每个载波的CBR,CBR_current为滤波前所述每个载波的CBR,CBR_old为上一次载波选取时滤波后的所述每个载波的CBR,a为滤波系数且0≤a≤1。
在一种可能的实现方式中,在所述根据所述多个载波的CBR,在所述根据所述多个载波的CBR,在所述多个载波中进行载波选取之前,所述方法还包括:对所述多个载波的CBR进行滤波处理,以获得滤波后的所述多个载波的CBR;
其中,所述当终端设备的位置由第一区域移动至第二区域时,根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
当所述终端设备的位置由所述第一区域移动至所述第二区域时,确定滤波后的第一载波的CBR,与滤波后的第二载波的CBR之间的差值,是否超过第一阈值,其中,所述第一载波为当前数据传输所使用的载波,所述第二载波为所述多个载波中除所述第一载波之外的任一载波;
若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取。
该实施例中,在终端设备所处的地理区域发生变化时,根据当前载波与其他载波的CBR之间的差值判断是否进行载波选取,并在CBR差值满足条件时,通过对多个载波的CBR的测量结果进行滤波处理,并基于滤波处理后的该多个载波的CBR,在该多个载波中进行载波选取,从而在实现载波选取的同时,降低了载波切换的频率,保证了系统的稳定性。
在一种可能的实现方式中,所述若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在滤波后CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
在一种可能的实现方式中,所述对所述多个载波的CBR进行滤波处理,包括:对所述多个载波的CBR进行平滑滤波。
在一种可能的实现方式中,进行所述平滑滤波后的所述多个载波中每个载波的CBR为:CBR_new=a×CBR_old+(1-a)×CBR_current,其中,CBR_new为滤波后所述每个载波的CBR,CBR_current为滤波前所述每个载波的CBR,CBR_old为上一次载波选取时滤波后的所述每个载波的CBR,a为滤波系数且0≤a≤1。
在一种可能的实现方式中,所述若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所 述第一阈值且持续预设时长,则根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取。
在一种可能的实现方式中,所述若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值且持续预设时长,则根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值且持续预设时长,则根据滤波后的所述多个载波的CBR,在滤波后CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
在一种可能的实现方式中,所述若滤波后的所述第一载波的CBR与滤波后的所述第二载波的CBR之间的差值,超过第一阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:若滤波后的所述第一载波的CBR与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,且所述第一载波的CBR大于第二阈值,则根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取。
在一种可能的实现方式中,所述若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,且滤波后的所述第一载波的CBR小于或等于第二阈值,则选取所述第一载波作为待使用的载波;或者,
若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,且滤波后的所述第一载波的CBR小于或等于第二阈值,则在滤波后CBR小于或等于所述第二阈值的载波中进行载波选取。
在一种可能的实现方式中,在所述根据所述多个载波的CBR,在所述多个载波中进行载波选取之前,所述方法还包括:对所述多个载波的CBR进行滤波处理,以获得滤波后的所述多个载波的CBR;
其中,所述当终端设备的位置由第一区域移动至第二区域时,根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:当所述终端设备的位置由所述第一区域移动至所述第二区域时,确定滤波后的第一载波的CBR,与滤波后的第二载波的CBR之间的差值,是否超过第一阈值,其中,所述第一载波为当前数据传输所使用的载波,所述第二载波为所述多个载波中除所述第一载波之外的任一载波;
若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,未超过所述第一阈值,则选取所述第一载波作为待使用的载波;或者,
若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,未超过所述第一阈值,则在所述多个载波中选择任意一个载波作为待使用的载波;或者,
若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,未超过所述第一阈值,则在所述多个载波中选择滤波后CBR最小的载波作为待使用的载波。
在一种可能的实现方式中,所述根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:根据滤波后的所述多个载波的CBR,在所述多个载波中选择滤波后CBR最小的载波作为待使用的载波。
在一种可能的实现方式中,所述方法由终端设备执行,所述获取候选的多个载波的CBR,包括:所述终端设备对所述多个载波的CBR进行测量,以获得所述多个载波的CBR。
在一种可能的实现方式中,所述方法由终端设备执行,所述获取候选的多个载波的CBR,包括:所述终端设备接收网络设备发送的广播消息,所述广播消息中携带候选的所述多个载波的CBR。
在一种可能的实现方式中,所述方法由网络设备执行,所述获取候选的多个载波的CBR,包括:所述网络设备接收终端设备上报的所述多个载波的CBR。
在一种可能的实现方式中,所述多个载波中每个载波的CBR,为终端设备在所述每个载波上使用的资源池的CBR。
在一种可能的实现方式中,所述终端设备在所述每个载波上使用的资源池,为多个资源池中与所述终端所处的区域对应的资源池,其中,所述多个资源池与多个区域之间存在对应关系。
第五方面,提供了一种通信设备,该通信设备可以执行上述第一方面或第一方面的任意可选的实现方式中的通信设备的操作。具体地,该通信设备可以包括用于执行上述第一方面或第一方面的任意可能的实现方式中的操作的模块单元。
第六方面,提供了一种通信设备,该通信设备可以执行上述第二方面或第二方面的任意可选的实现方式中的通信设备的操作。具体地,该通信设备可以包括用于执行上述第二方面或第二方面的任意可能的实现方式中的操作的模块单元。
第七方面,提供了一种通信设备,该通信设备可以执行上述第三方面或第三方面的任意可选的实现 方式中的通信设备的操作。具体地,该通信设备可以包括用于执行上述第三方面或第三方面的任意可能的实现方式中的操作的模块单元。
第八方面,提供了一种通信设备,该通信设备可以执行上述第四方面或第四方面的任意可选的实现方式中的通信设备的操作。具体地,该通信设备可以包括用于执行上述第四方面或第四方面的任意可能的实现方式中的操作的模块单元。
第九方面,提供了一种通信设备,该通信设备包括:处理器、收发器和存储器。其中,该处理器、收发器和存储器之间通过内部连接通路互相通信。该存储器用于存储指令,该处理器用于执行该存储器存储的指令。当该处理器执行该存储器存储的指令时,该执行使得该通信设备执行第一方面或第一方面的任意可能的实现方式中的方法,或者该执行使得该通信设备实现第五方面提供的通信设备。
第十方面,提供了一种通信设备,该通信设备包括:处理器、收发器和存储器。其中,该处理器、收发器和存储器之间通过内部连接通路互相通信。该存储器用于存储指令,该处理器用于执行该存储器存储的指令。当该处理器执行该存储器存储的指令时,该执行使得该通信设备执行第二方面或第二方面的任意可能的实现方式中的方法,或者该执行使得该通信设备实现第六方面提供的通信设备。
第十一方面,提供了一种通信设备,该通信设备包括:处理器、收发器和存储器。其中,该处理器、收发器和存储器之间通过内部连接通路互相通信。该存储器用于存储指令,该处理器用于执行该存储器存储的指令。当该处理器执行该存储器存储的指令时,该执行使得该通信设备执行第三方面或第三方面的任意可能的实现方式中的方法,或者该执行使得该通信设备实现第七方面提供的通信设备。
第十二方面,提供了一种通信设备,该通信设备包括:处理器、收发器和存储器。其中,该处理器、收发器和存储器之间通过内部连接通路互相通信。该存储器用于存储指令,该处理器用于执行该存储器存储的指令。当该处理器执行该存储器存储的指令时,该执行使得该通信设备执行第四方面或第四方面的任意可能的实现方式中的方法,或者该执行使得该通信设备实现第八方面提供的通信设备。
第十三方面,提供了一种计算机可读存储介质,所述计算机可读存储介质存储有程序,所述程序使得通信设备执行上述第一方面,及其各种实现方式中的任一种载波选取的方法。
第十四方面,提供了一种计算机可读存储介质,所述计算机可读存储介质存储有程序,所述程序使得通信设备执行上述第二方面,及其各种实现方式中的任一种载波选取的方法。
第十五方面,提供了一种计算机可读存储介质,所述计算机可读存储介质存储有程序,所述程序使得通信设备执行上述第三方面,及其各种实现方式中的任一种载波选取的方法。
第十六方面,提供了一种计算机可读存储介质,所述计算机可读存储介质存储有程序,所述程序使得通信设备执行上述第四方面,及其各种实现方式中的任一种载波选取的方法。
第十七方面,提供了一种系统芯片,该系统芯片包括输入接口、输出接口、处理器和存储器,该处理器用于执行该存储器存储的指令,当该指令被执行时,该处理器可以实现前述第一方面或第一方面的任意可能的实现方式中的方法。
第十八方面,提供了一种系统芯片,该系统芯片包括输入接口、输出接口、处理器和存储器,该处理器用于执行该存储器存储的指令,当该指令被执行时,该处理器可以实现前述第二方面或第二方面的任意可能的实现方式中的方法。
第十九方面,提供了一种系统芯片,该系统芯片包括输入接口、输出接口、处理器和存储器,该处理器用于执行该存储器存储的指令,当该指令被执行时,该处理器可以实现前述第三方面或第三方面的任意可能的实现方式中的方法。
第二十方面,提供了一种系统芯片,该系统芯片包括输入接口、输出接口、处理器和存储器,该处理器用于执行该存储器存储的指令,当该指令被执行时,该处理器可以实现前述第四方面或第四方面的任意可能的实现方式中的方法。
第二十一方面,提供了一种包括指令的计算机程序产品,当所述计算机程序产品在计算机上运行时,使得该计算机执行上述第一方面或第一方面的任意可能的实现方式中的方法。
第二十二方面,提供了一种包括指令的计算机程序产品,当所述计算机程序产品在计算机上运行时,使得该计算机执行上述第二方面或第二方面的任意可能的实现方式中的方法。
第二十三方面,提供了一种包括指令的计算机程序产品,当所述计算机程序产品在计算机上运行时,使得该计算机执行上述第三方面或第三方面的任意可能的实现方式中的方法。
第二十四方面,提供了一种包括指令的计算机程序产品,当所述计算机程序产品在计算机上运行时,使得该计算机执行上述第四方面或第四方面的任意可能的实现方式中的方法。
附图说明
图1是本申请实施例的一种应用场景的示意性架构图。
图2是本申请实施例的另一种应用场景的示意性架构图。
图3是本申请另一实施例的资源侦听和选择的示意图。
图4是本申请再一实施例的载波选取的方法的示意性流程图。
图5是本申请另一实施例的载波选取的方法的示意性流程图。
图6是本申请再一实施例的载波选取的方法的示意性流程图。
图7是本申请再一实施例的载波选取的方法的示意性流程图。
图8是本申请实施例的通信设备的示意性框图。
图9是本申请另一实施例的通信设备的示意性框图。
图10是本申请再一实施例的通信设备的示意性框图。
图11是本申请再一实施例的通信设备的示意性框图。
图12是本申请实施例的通信设备的示意性结构图。
图13是本申请实施例的系统芯片的示意性结构图。
具体实施方式
下面将结合附图,对本申请实施例中的技术方案进行描述。
应理解,本申请实施例的技术方案可以应用于各种通信系统,例如:全球移动通讯(Global Systemof Mobile Communication,GSM)系统、码分多址(Code Division Multiple Access,CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access,WCDMA)系统、长期演进(Long Term Evolution,LTE)系统、LTE频分双工(Frequency Division Duplex,FDD)系统、LTE时分双工(Time Division Duplex,TDD)、通用移动通信系统(Universal Mobile Telecommunication System,UMTS)、以及未来的5G通信系统等。
本申请结合终端设备描述了各个实施例。终端设备也可以指用户设备(User Equipment,UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、无绳电话、会话启动协议(Session InitiationProtocol,SIP)电话、无线本地环路(Wireless Local Loop,WLL)站、个人数字处理(Personal DigitalAssistant,PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备,未来5G网络中的终端设备或者未来演进的陆上公用移动通信网(Public LandMobile Network,PLMN)网络中的终端设备等。
本申请结合网络设备描述了各个实施例。网络设备可以是用于与终端设备进行通信的设备,例如,可以是GSM系统或CDMA中的基站(Base Transceiver Station,BTS),也可以是WCDMA系统中的基站(NodeB,NB),还可以是LTE系统中的演进型基站(Evolutional Node B,eNB或eNodeB),或者该网络设备可以为中继站、接入点、车载设备、可穿戴设备以及未来5G网络中的网络侧设备或未来演进的PLMN网络中的网络侧设备等。
图1和图2是本申请实施例的一个应用场景的示意图。图1示例性地示出了一个网络设备和两个终端设备,可选地,该无线通信系统可以包括多个网络设备并且每个网络设备的覆盖范围内可以包括其它数量的终端设备,本发明实施例对此不做限定。此外,该无线通信系统还可以包括移动管理实体(MobileManagement Entity,MME)、服务网关(Serving Gateway,S-GW)、分组数据网络网关(Packet DataNetwork Gateway,P-GW)等其他网络实体,但本发明实施例不限于此。
具体地,终端设备20和终端设备30可以蜂窝通信模式或D2D通信模式进行通信,其中,在蜂窝通信模式中,终端设备通过与网络设备之间的蜂窝链路与其它终端设备通信,例如图1所示,终端设备20、终端设备30均可以与网络设备之间进行数据传输;在D2D通信模式中,两个终端设备通过D2D链路即侧行链路(Sidelink上,SL)或称终端直连链路直接进行通信,例如图1或者图2所示,终端设备20和终端设备30通过侧行链路直接进行通信。
D2D通信可以指车对车(Vehicle to Vehicle,简称“V2V”)通信或车辆到其他设备(Vehicle toEverything,V2X)通信。在V2X通信中,X可以泛指任何具有无线接收和发送能力的设备,例如但不限于慢速移动的无线装置,快速移动的车载设备,或是具有无线发射接收能力的网络控制节点等。应理解,本发明实施例主要应用于V2X通信的场景,但也可以应用于任意其它D2D通信场景,本发明实施例对此不做任何限定。
在车联网系统中,可以存在两种类型的终端设备,即具有侦听能力的终端设备例如车载终端(Vehicle User Equipment,VUE)或行人手持终端(Pedestrian User Equipment,PUE),以及不具有侦听能力的终端设备例如PUE。VUE具有更高的处理能力,并且通常通过车内的蓄电池供电,而PUE处理能力较低,降低功耗也是PUE需要考虑的一个主要因素,因此在现有的车联网系统中,VUE被认为 具有完全的接收能力和侦听能力;而PUE被认为具有部分或者不具有接收和侦听能力。如果PUE具有部分侦听能力,其资源的选取可以采用和VUE类似的侦听方法,在可侦听的那部分资源上进行可用资源的选取;如果PUE不具有侦听能力,则PUE在资源池中随机选取传输资源。
在3GPP协议中定义了两种传输模式,即传输模式3(mode 3)和传输模式4(mode 4)。使用传输模式3的终端设备的传输资源是由基站分配的,终端设备根据基站分配的资源在侧行链路上进行数据的发送;基站可以为终端设备分配单次传输的资源,也可以为终端设备分配半静态传输的资源。使用传输模式4的终端设备采用侦听(sensing)和预留(reservation)的方式传输数据。终端设备在资源池中通过侦听的方式获取可用的资源集合,终端设备从该可用的资源集合中随机选取一个资源进行数据传输。由于车联网系统中的业务具有周期性特征,因此终端设备通常采用半静态传输的方式,即终端设备选取一个传输资源后,就会在多个传输周期中持续的使用该资源,从而降低资源重选以及资源冲突的概率。终端设备会在本次传输的控制信息中携带预留下次传输资源的信息,从而使得其他终端设备可以通过检测该终端设备的控制信息判断这块资源是否被该终端设备预留和使用,达到降低资源冲突的目的。
终端设备在进行资源侦听时,具体可以按照图3所示的方法进行资源侦听。在Release-14的3GPP协议中,每个侧行链路进程(sidelink process)中(一个载波可以包括两个进程),当时刻n有新的数据包到达时,需要进行资源选取,终端设备根据对前1s(即1000ms)侦听窗的侦听结果,在[n+T1,n+T2]ms的时间段内进行资源选取,所述[n+T1,n+T2]ms的时间段称为选择窗,其中T1和T2例如可以满足T1≤4、20≤T2≤100。后面所述的前1s都是指针对n时刻而言的前1s。具体的资源选取过程如下,这里以终端设备20侦听终端设备30的资源为例进行描述,并假设选择窗内所有的可用于终端设备20进行传输的资源称为候选资源集合:
(1)如果侦听创窗内的某些子帧上没有侦听结果,例如该终端设备20在这些子帧上传输有自己的数据,那么选择窗内相应位置的这些子帧上的资源被排除在候选资源集合之外。
(2)如果终端设备20在前1s的侦听窗内,检测到终端设备30发送的物理侧行链路控制信道(Physical Sidelink Control Channel,PSCCH),且该PSCCH所对应的物理侧行共享信道(Physical SidelinkShared Channel,PSSCH)的参考信号接收功率(Reference Signal Received Power,RSRP)的测量值高于预设门限,并且检测到的该PSCCH指示了发送该PSCCH的终端设备30预留了下一次传输时所需的时频资源,那么终端设备20会判断选择窗内被终端设备30预留的时频资源,与自己在该选择窗内选择的用于传输数据的时频资源是否重叠,如果重叠即发生资源冲突,那么终端设备20将选择窗内的该时频资源排除在候选资源集合之外。
应理解,如果终端设备20在该选择窗内为自己选择了用于传输数据的该时频资源,并且在按照时间周期T3分布的多个该时频资源上都需要传输数据,那么此时,如果终端设备30预留了按照时间周期T2分布的多个该时频资源,且时间周期T3满足T3×M=T2×N,M和N为正整数,那么终端设备20会将按照时间周期T3分布的多个该时频资源排除在该候选资源集之外。
(3)终端设备20对候选资源集合中剩余资源进行接收信号强度指示(Received Signal StrengthIndicator,RSSI)的测量,并且按照测量结果由高到低进行排序,把能量高于某一门限的资源排除在候选资源集合之外,例如测量功率高的前80%的资源被排除在候选资源集合之外。
(4)终端设备20在最后的剩余的该候选资源集合中,随机选取一个时频资源用于数据传输。
应理解,这里将某个控制信道对应的数据信道所占用的时频资源,称为用于传输该数据信道的一个时频资源(或一个资源块),每个选择窗内的候选资源集合中可以存在多个时频资源用于传输该数据信道。例如图3中的资源A1和B1均可以称为一个时频资源。
当终端设备20选取了用于数据传输的时频资源后,会在后续传输过程中使用该时频资源C_resel次,其中C_resel为资源重选计数器(Resource Reselection Counter),每传输一次数据,C_resel的值减1,当C_resel的值减至0时,终端设备20会产生一个位于[0,1]之间的随机数,并与资源保持概率(Probability Resource Keep,ProbResourceKeep)参数进行比较,该参数表示终端设备继续使用该资源的概率,如果该随机数的值大于该参数,终端设备20进行资源重选,如果该随机数的值小于该参数,终端设备20可以继续使用该时频资源进行数据传输,并且同时重置C_resel的值。
在支持多载波传输的车联网系统中,终端设备无论使用传输模式3还是使用传输模式4,都可以使用候选的多个载波中的一个或多个载波进行当前的数据传输。使用传输模式4的终端设备可以在多个候选的载波中选择一个或多个载波用于进行当前的数据传输,而使用传输模式3的终端设备可以根据基站选择的一个或多个载波进行当前的数据传输。
终端设备可以测量系统的拥塞程度,例如测量信道占用比率(Channel Busy Ratio,CBR),基站可以指示终端设备将测量结果上报给基站,从而基站根据终端设备上报的CBR配置传输参数例如终端设备允许的调制编码方式(Modulation Coding Mode,MCS)、可使用物理资源块(Physical resource block, PBR)的数目范围、重传次数等传输参数。
该CBR可以用于终端设备进行载波选取,例如终端设备可以根据多个载波的CBR测量结果,选择CBR最低的一个载波进行数据传输。但是,每个载波的CBR会随着终端设备的移动而快速变化,或者该CBR会随着时间的变化而变化,这就导致终端设备每次进行载波选取时,可能会在多个载波之间频繁地进行切换,从而导致系统的不稳定。
而本申请实施例提出的载波选取的方法,终端设备或网络设备可以通过对CBR进行适当的处理,并基于处理后的CBR进行载波选取,从而可以实现有效的载波选取,同时保持系统的稳定性。
图4是本申请实施例的载波选取的方法的示意性流程图。图4所示的方法可以由通信设备执行,该通信设备包括终端设备或网络设备,该终端设备例如可以为图2中所示的终端设备20或终端设备30,该网络设备例如可以为图1或图2中所示的网络设备10。下面以终端设备为例来描述,但本申请所述的方法也可以由网络设备等来执行。如图4所示,该载波选取的方法包括:
在410中,获取候选的多个载波的信道占用比率CBR。
在420中,对该多个载波的CBR进行滤波处理,以获得滤波后的该多个载波的CBR。
在430中,根据滤波后的该多个载波的CBR,在该多个载波中进行载波选取。
具体地,终端设备获取可用于其进行数据传输的多个载波的CBR,并对候选的这多个载波的CBR进行滤波处理,以获取滤波处理后的该多个载波的CBR。之后根据滤波后的该多个载波的CBR,在该多个载波中进行载波选取,以选取待使用的载波。如果选取的待使用的载波与终端设备当前使用的载波相同,则可以不进行载波切换,否则进行载波切换。
由于每个载波的CBR可能随着终端设备的位置的变化而快速变化,或者随时间的变化而变化,因而通过对每个载波的CBR的测量值进行滤波处理,使得每个载波的CBR的变化趋于平稳,从而在实现载波选取的同时,降低了载波切换的频率,保证了系统的稳定性。
其中,该多个载波中每个载波的CBR,为终端设备在每个载波上使用的资源池的CBR。
进一步地,可选地,终端设备在每个载波上使用的资源池,为多个资源池中与该终端所处的区域(即地理区域)对应的资源池,其中,这多个资源池与多个区域之间存在对应关系。
具体地,可以划分多个地理区域,这多个地理区域与多个资源池之间存在对应关系,终端设备在每个载波上传输数据时所使用的资源池,为与终端设备当前所处的地理区域对应的资源池。当终端设备使用该资源池与网络设备进行数据传输时,终端设备测量的CBR为该资源池的CBR,即终端设备测量的CBR为该资源池中的信道资源的CBR。终端设备处于不同地理区域时,在每个载波中使用的资源池也可能不同。
其中,多个地理区域与多个资源池之间的对应关系例如可以通过映射表格、公式等方式来表示,本申请实施例不作限定。并且,一个地理区域可以对应于一个或多个资源池,一个资源池也可以对应于一个或多个地理区域,或者,该多个地理区域与多个资源池之间一一对应。
可选地,如果该方法由终端设备执行,那么410中,获取候选的多个载波的CBR,包括:该终端设备对该多个载波的CBR进行测量,以获得该多个载波的CBR。
例如,终端设备测量该多个载波的CBR,并且上报给高层,高层对底层上报的该多个载波的CBR进行滤波处理。终端设备根据滤波后的该多个载波的CBR进行载波选取。
或者,可选地,该方法由终端设备执行,那么410中,获取候选的多个载波的CBR,包括:该终端设备接收网络设备发送的广播消息,该广播消息中携带候选的该多个载波的CBR。
可选地,如果该方法由网络设备执行,那么410中,获取候选的多个载波的CBR,包括:该网络设备接收终端设备上报的该多个载波的CBR。
例如,网络设备可以指示终端设备对每个载波的CBR进行测量并将测量结果上报给网络设备。
可选地,在420中,对该多个载波的CBR进行滤波处理,包括:对该多个载波的CBR进行平滑滤波。
本申请实施例对平滑滤波的方式不作限定。
例如,该平滑滤波的方式可以为CBR_new=a×CBR_old+(1-a)×CBR_current。
其中,CBR_new为滤波后每个载波的CBR,CBR_current为滤波前每个载波的CBR,CBR_old为上一次载波选取时滤波后的每个载波的CBR,a为滤波系数且0≤a≤1。
可以看出,由于采用了适当的滤波方式对测量得到的CBR进行滤波,避免了CBR速变化导致的频繁的载波切换。
可选地,在430中,根据滤波后的该多个载波的CBR,在该多个载波中进行载波选取,包括:根据滤波后的该多个载波的CBR,在该多个载波中选择滤波后CBR最小的载波作为待使用的载波。
基于上面的载波选取方法,本申请实施例进一步提供了三种具体的用于终端设备或网络设备进行载 波选取的方法,下面以终端设备为例进行描述。
方式1
可选地,在430之前,即根据滤波后的该多个载波的CBR,在该多个载波中进行载波选取之前,该方法还包括:确定滤波后的第一载波的CBR,与滤波后的第二载波的CBR之间的差值,是否超过第一阈值,其中,该第一载波为当前数据传输所使用的载波,该第二载波为该多个载波中除该第一载波之外的任一载波。
其中,在430中,根据滤波后的该多个载波的CBR,在该多个载波中进行载波选取,包括:若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值,则根据滤波后的该多个载波的CBR,在该多个载波中进行载波选取。
该实施例中,根据当前载波与其他载波的CBR之差判断是否进行载波选取,并在CBR之差满足条件时基于滤波处理后的CBR进行载波选取,从而进一步降低了载波切换的频率,保证了系统的稳定性。
可选地,该方法由终端设备执行时,在确定滤波后的第一载波的CBR,与滤波后的第二载波的CBR之间的差值,是否超过第一阈值之前,该方法还包括:终端设备获取预配置在该终端设备中的该第一阈值;或者终端设备接收网络设备发送的配置信息,该配置信息包括该第一阈值。
可选地,该方法由网络设备执行时,该方法还包括:网络设备向终端设备发送配置信息,该配置信息包括该第一阈值。
例如,候选的该多个载波的数量为N,N为大于或等于2的正整数。N个载波各自的CBR测量值分别表示为CBR1、BCR2、……、CBRN。假设当前终端设备使用的载波的CBR为CBR1,对于N个CBR中的任意一个CBRk,如果满足|CBR1-CBRk|>B,B为预设的一个阈值,则会触发终端设备进行载波选取,例如终端设备对N个载波的CBR进行测量并滤波,根据滤波后的N个载波的CBR,从N个载波中选择选择CBR最小的载波作为待使用的载波。这里的第一阈值B可以是预配置在终端设备或网络设备中的例如协议中约定的;网络设备也可以通过配置信息向终端设备指示该第一阈值B。
进一步地,可选地,在430中,若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值,则根据滤波后的该多个载波的CBR,在该多个载波中进行载波选取,包括:
若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值,则根据滤波后的该多个载波的CBR,在CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
也就是说,滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值时,可以在该多个载波中,选择CBR满足条件的那些载波,并在满足条件的这些载波中选择待使用的载波,这里所述的条件,即这些载波的CBR与第一载波的CBR之差超过第一阈值。
可选地,若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值,则根据滤波后的该多个载波的CBR,在该多个载波中进行载波选取,包括:若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值且持续预设时长,则根据滤波后的该多个载波的CBR,在该多个载波中进行载波选取。
进一步地,可选地,若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值且持续预设时长,则根据滤波后的该多个载波的CBR,在该多个载波中进行载波选取,包括:
若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值且持续预设时长,则根据滤波后的该多个载波的CBR,在滤波后CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
也就是说,滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值且持续该预设时长时,可以在该多个载波中,选择CBR满足条件的那些载波,并在满足条件的这些载波中选择待使用的载波,这里所述的条件,即这些载波的CBR与第一载波的CBR之差超过第一阈值。
可选地,若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值,则根据滤波后的该多个载波的CBR,在该多个载波中进行载波选取,包括:若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值,且滤波后的第一载波的CBR大于第二阈值,则根据滤波后的该多个载波的CBR,在该多个载波中进行载波选取。
或者,可选地,若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值,则根据滤波后的该多个载波的CBR,在该多个载波中进行载波选取,包括:若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值,且滤波后的该第一 载波的CBR小于或等于第二阈值,则选取该第一载波作为待使用的载波;或者,
若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值,且滤波后的该第一载波的CBR小于或等于第二阈值,则在滤波后CBR小于或等于该第二阈值的载波中进行载波选取。
存在另一种情况,即滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,未超过该第一阈值,这时,可选地,根据滤波后的该多个载波的CBR,在该多个载波中进行载波选取,包括:
若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,未超过该第一阈值,则选取该第一载波作为待使用的载波;或者,
若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,未超过该第一阈值,则在该多个载波中选择任意一个载波作为待使用的载波;或者,
若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,未超过该第一阈值,则在该多个载波中选择滤波后CBR最小的载波作为待使用的载波。
方式2
可选地,在430中,根据滤波后的该多个载波的CBR,在该多个载波中进行载波选取,包括:当资源重选计数器C_resel的值等于0时,根据滤波后的该多个载波的CBR,在该多个载波中进行载波选取。
该实施例中,进行载波选取的过程不依赖于ProbResourceKeep参数,而是基于资源重选计数器C_resel确定当前是否需要进行载波选取,并在需要进行载波选取时基于滤波处理后的CBR进行载波选,从而降低了载波切换的频率,保证了系统的稳定性。
可选地,该多个载波中每个载波上配置有一个对应的C_resel,其中,该当C_resel的值等于0时,根据该多个载波的CBR,在该多个载波中进行载波选取,包括:当该多个载波上配置的多个C_resel中与当前数据传输所使用的载波(第一载波)对应的C_resel的值等于0时,根据该多个载波的CBR,在该多个载波中进行载波选取。
换句话说,终端设备可以为每个载波上的HARQ进程都配置独立的C_resel,与当前数据传输所使用的载波(第一载波)对应的C_resel的值等于0时,就可以触发终端设备进行载波选取。
或者,可选地,该多个载波上配置有相同的C_resel,其中,该当C_resel的值等于0时,根据该多个载波的CBR,在该多个载波中进行载波选取,包括:当该相同的C_resel的值等于0时,根据该多个载波的CBR,在该多个载波中进行载波选取。
也就是说,终端设备也可以为该多个载波的HARQ配置相同的C_resel,则当该C_resel=0时,触发终端设备进行载波选取。
方式3
可选地,在430之前,即根据滤波后的该多个载波的CBR,在该多个载波中进行载波选取之前,该方法还包括:当该C_resel的值等于0时,确定滤波后的第一载波的CBR,与滤波后的第二载波的CBR之间的差值,是否超过第一阈值,其中,该第一载波为当前数据传输所使用的载波,该第二载波为该多个载波中除该第一载波之外的任一载波;
其中,在430中,根据滤波后的该多个载波的CBR,在该多个载波中进行载波选取,包括:若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值,则根据滤波后的该多个载波的CBR,在该多个载波中进行载波选取。
该实施例中,基于资源C_resel确定当前是否需要进行载波选取,并在需要进行载波选取时判断当前载波与其他载波的CBR之差是否满足条件,并且在CBR之差满足条件时基于滤波处理后的CBR进行载波选取,从而进一步降低了载波切换的频率,保证了系统的稳定性。
具体地,当C_resel的值等于0时,触发终端设备进行CBR差值的判断,当滤波后的第一载波与滤波后的第二载波之间的该CBR差值超过第一阈值时,终端设备在候选的多个载波中进行载波选取。
进一步地,可选地,在430中,若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值,则根据滤波后的该多个载波的CBR,在该多个载波中进行载波选取,包括:
若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值,则根据滤波后的该多个载波的CBR,在CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
也就是说,滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值时,可以在该多个载波中,选择CBR满足条件的那些载波,并在满足条件的这些载波中选择待使 用的载波,这里所述的条件,即这些载波的CBR与第一载波的CBR之差超过第一阈值。
可选地,在430中,若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值,则根据滤波后的该多个载波的CBR,在该多个载波中进行载波选取,包括:若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值且持续预设时长,则根据该多个载波的CBR,在该多个载波中进行载波选取。
进一步地,可选地,若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值且持续预设时长,则根据滤波后的该多个载波的CBR,在该多个载波中进行载波选取,包括:
若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值且持续该预设时长,则根据滤波后的该多个载波的CBR,在滤波后CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
也就是说,滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值且持续该预设时长时,可以在该多个载波中,选择CBR满足条件的那些载波,并在满足条件的这些载波中选择待使用的载波,这里所述的条件,即这些载波的滤波后的CBR与第一载波的滤波后的CBR之差超过第一阈值。
可选地,在430中,若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值,则根据滤波后的该多个载波的CBR,在该多个载波中进行载波选取,包括:若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值,且滤波后的该第一载波的CBR大于第二阈值,则根据该多个载波的CBR,在该多个载波中进行载波选取。
进一步地,可选地,在430中,若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值,则根据滤波后的该多个载波的CBR,在该多个载波中进行载波选取,包括:
若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值,且滤波后的该第一载波的CBR小于或等于第二阈值,则选取该第一载波作为待使用的载波;或者,
若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值,且滤波后的该第一载波的CBR小于或等于第二阈值,则在滤波后CBR小于或等于该第二阈值的载波中进行载波选取。
存在另一种情况,即滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,未超过该第一阈值,这时,可选地,根据滤波后的该多个载波的CBR,在该多个载波中进行载波选取,包括:
若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,未超过该第一阈值,则选取该第一载波作为待使用的载波;或者,
若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,未超过该第一阈值,则在该多个载波中选择任意一个载波作为待使用的载波;或者,
若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,未超过该第一阈值,则在该多个载波中选择滤波后CBR最小的载波作为待使用的载波。
可选地,该方法由终端设备执行,在确定滤波后的第一载波的CBR,与滤波后的第二载波的CBR之间的差值,是否超过第一阈值之前,该方法还包括:终端设备获取预配置在该终端设备中的该第一阈值;或者终端设备接收网络设备发送的配置信息,该配置信息包括该第一阈值。
可选地,该方法由网络设备执行,该方法还包括:网络设备向终端设备发送配置信息,该配置信息包括该第一阈值。
可选地,该多个载波中每个载波上配置有一个对应的C_resel,其中,该当该C_resel的值等于0时,确定滤波后的第一载波的CBR,与滤波后的第二载波的CBR之间的差值,是否超过第一阈值,包括:当该多个载波上配置的多个C_resel中与当前数据传输所使用的载波(第一载波)对应的C_resel的值等于0时,确定滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,是否超过该第一阈值。
可选地,该多个载波上配置有相同的C_resel,其中,该当C_resel的值等于0时,确定滤波后的第一载波的CBR,与滤波后的第二载波的CBR之间的差值,是否超过第一阈值,包括:当该相同的C_resel的值等于0时,确定滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,是否超过该第一阈值。
应理解,本申请实施例中的载波选取的方法,可以应用在使用不同传输模式(例如前述传输模式3或传输模式4)的终端设备中。当终端设备使用传输模式3时,可以由网络设备基于上述方法进行载波 选取并告知终端设备;当终端设备使用传输模式4时,该终端设备可以自主地通过上述方法进行载波选取。网络设备进行载波选取的详细过程可以参考前述终端设备进行载波选取的过程,为了简洁,这里不再赘述。
图5是本申请另一实施例的载波选取的方法的示意性流程图。图5所示的方法可以由通信设备执行,该通信设备包括终端设备或网络设备,该终端设备例如可以为图2中所示的终端设备20或终端设备30,该网络设备例如可以为图1或图2中所示的网络设备10。下面以终端设备为例来描述,但本申请所述的方法也可以由网络设备等来执行。如图5所示,该载波选取的方法包括:
在510中,获取候选的多个载波的CBR;
在520中,确定第一载波的CBR与第二载波的CBR之间的差值,是否超过第一阈值。
其中,该第一载波为当前数据传输所使用的载波,该第二载波为该多个载波中除该第一载波之外的任一载波;
在530中,若该第一载波的CBR与该第二载波的CBR之间的差值,超过第一阈值,则在该多个载波中进行载波选取。
具体地,终端设备获取候选的多个载波的CBR的测量结果,并计算当前数据传输所使用的第一载波的CBR与其他载波之间的CBR之差,当第一载波的CBR与其他任一载波的CBR之间的差值大于第一阈值时,触发终端设备进行载波选取,载波选取时终端设备可以根据该多个载波的CBR,在该多个载波中选取待使用的载波。如果选取的待使用的载波与终端设备当前使用的载波相同,则可以不进行载波切换,否则进行载波切换。
例如,候选的该多个载波的数量为N,N为大于或等于2的正整数。N个载波各自的CBR测量值分别表示为CBR1、BCR2、……、CBRN。假设当前终端设备使用的载波的CBR为CBR1,对于N个CBR中的任意一个CBRk,如果满足|CBR1-CBRk|>B,B为预设的一个阈值,则会触发终端设备进行载波选取,例如终端设备对N个载波的CBR进行测量,根据得到的N个载波的CBR,从N个载波中选择选择CBR最小的载波作为待使用的载波。
其中,该多个载波中每个载波的CBR,为终端设备在每个载波上使用的资源池的CBR。
进一步地,可选地,在530中,若该第一载波的CBR与该第二载波的CBR之间的差值,超过第一阈值,则根据该多个载波的CBR,在该多个载波中进行载波选取,包括:
若该第一载波的CBR与该第二载波的CBR之间的差值,超过第一阈值,则根据该多个载波的CBR,在CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
也就是说,该第一载波的CBR与该第二载波的CBR之间的差值,超过该第一阈值时,可以在该多个载波中,选择CBR满足条件的那些载波,并在满足条件的这些载波中选择待使用的载波,这里所述的条件,即这些载波的CBR与第一载波的CBR之差超过第一阈值。
可选地,终端设备在每个载波上使用的资源池,为多个资源池中与该终端所处的区域(即地理区域)对应的资源池,其中,这多个资源池与多个区域之间存在对应关系。
具体地,可以划分多个地理区域,这多个地理区域与多个资源池之间存在对应关系,终端设备在每个载波上传输数据时所使用的资源池,为与终端设备当前所处的地理区域对应的资源池。当终端设备使用该资源池与网络设备进行数据传输时,终端设备测量的CBR为该资源池的CBR,即终端设备测量的CBR为该资源池中的信道资源的CBR。终端设备处于不同地理区域时,在每个载波中使用的资源池也可能不同。
其中,多个地理区域与多个资源池之间的对应关系例如可以通过映射表格、公式等方式来表示,本申请实施例不作限定。并且,一个地理区域可以对应于一个或多个资源池,一个资源池也可以对应于一个或多个地理区域,或者,该多个地理区域与多个资源池之间一一对应。
可选地,该方法由终端设备执行时,在510中,获取候选的多个载波的CBR,包括:终端设备对该多个载波的CBR进行测量,以获得该多个载波的CBR。
可选地,该方法由终端设备执行时,在510中,获取候选的多个载波的CBR,包括:该终端设备接收网络设备发送的广播消息,该广播消息中携带候选的该多个载波的CBR。
可选地,该方法由终端设备执行时,在520之前,即在确定第一载波的CBR与第二载波的CBR之间的差值,是否超过第一阈值之前,该方法还包括:终端设备获取预配置在终端设备中的该第一阈值;或者终端设备接收网络设备发送的配置信息,该配置信息包括该第一阈值。
可选地,该方法由网络设备执行时,在510中,获取候选的多个载波的CBR,包括:网络设备接收终端设备上报的该多个载波的CBR。
可选地,该方法由网络设备执行时,该方法还包括:网络设备向终端设备发送配置信息,该配置信息包括该第一阈值。
可选地,在520中,确定第一载波的CBR与第二载波的CBR之间的差值,是否超过第一阈值,包括:当C_resel的值等于0时,确定该第一载波的CBR与该第二载波的CBR之间的差值,是否超过该第一阈值。
该实施例中,载波选取的过程与ProbResourceKeep参数不相关,即独立于ProbResourceKeep参数。终端设备基于C_resel确定当前是否需要进行载波选取,并在需要进行载波选取时判断当前载波与其他载波的CBR之差是否满足条件,并且在CBR之差满足条件时基于不同载波的CBR进行载波选取,从而降低了载波切换的频率,保证了系统的稳定性。
可选地,该多个载波中每个载波上配置有一个对应的C_resel,其中,当该C_resel的值等于0时,确定第一载波的CBR与第二载波的CBR之间的差值,是否超过第一阈值,包括:当该多个载波上配置的多个C_resel中的与当前数据传输所使用的载波(第一载波)对应的C_resel的值等于0时,确定该第一载波的CBR与该第二载波的CBR之间的差值是否超过该第一阈值。
换句话说,终端设备可以为每个载波上的HARQ进程都配置独立的C_resel,当其中任意一个载波对应的C_resel=0时,就可以触发终端设备进行载波选取。
可选地,该多个载波上配置有相同的C_resel,其中,当C_resel的值等于0时,确定第一载波的CBR与第二载波的CBR之间的差值是否超过第一阈值,包括:当该相同的C_resel的值等于0时,确定该第一载波的CBR与该第二载波的CBR之间的差值是否超过该第一阈值。
也就是说,终端设备也可以为该多个载波的HARQ配置相同的C_resel,则当该C_resel=0时,触发终端设备进行载波选取。
可选地,在530中,若该一载波的CBR与该第二载波的CBR之间的差值,超过第一阈值,则在该多个载波中进行载波选取,包括:若该第一载波的CBR与该第二载波的CBR之间的差值超过第一阈值且持续预设时长,则在该多个载波中进行载波选取。
进一步地,可选地,在530中,若该第一载波的CBR,与该第二载波的CBR之间的差值,超过该第一阈值且持续预设时长,则根据该多个载波的CBR,在该多个载波中进行载波选取,包括:若该第一载波的CBR与该第二载波的CBR之间的差值,超过该第一阈且持续预设时长,则根据该多个载波的CBR,在CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
也就是说,该第一载波的CBR与该第二载波的CBR之间的差值,超过该第一阈值且持续该预设时长时,可以在该多个载波中,选择CBR满足条件的那些载波,并在满足条件的这些载波中选择待使用的载波,这里所述的条件,即这些载波的CBR与第一载波的CBR之差超过第一阈值。
可选地,在530中,若该一载波的CBR与该第二载波的CBR之间的差值,超过第一阈值,则在该多个载波中进行载波选取,包括:若该第一载波的CBR与该第二载波的CBR之间的差值超过第一阈值,且该第一载波的CBR大于第二阈值,则在该多个载波中进行载波选取。
或者,可选地,在530中,若该一载波的CBR与该第二载波的CBR之间的差值,超过第一阈值,则在该多个载波中进行载波选取,包括:
若该第一载波的CBR,与该第二载波的CBR之间的差值,超过该第一阈值,且该第一载波的CBR小于或等于第二阈值,则选取该第一载波作为待使用的载波;或者,
若该第一载波的CBR,与该第二载波的CBR之间的差值,超过该第一阈值,且该第一载波的CBR小于或等于第二阈值,则在CBR小于或等于该第二阈值的载波中进行载波选取。
存在另一种情况,即该第一载波的CBR与该第二载波的CBR之间的差值,未超过该第一阈值,这时,可选地,根据该多个载波的CBR,在该多个载波中进行载波选取,包括:
若该第一载波的CBR,与该第二载波的CBR之间的差值,未超过该第一阈值,则选取该第一载波作为待使用的载波;或者,
若该第一载波的CBR,与该第二载波的CBR之间的差值,未超过该第一阈值,则在该多个载波中选择任意一个载波作为待使用的载波;或者,
若该第一载波的CBR,与该第二载波的CBR之间的差值,未超过该第一阈值,则在该多个载波中选择CBR最小的载波作为待使用的载波。
可选地,在530中,在该多个载波中进行载波选取,包括:根据该多个载波的CBR,在该多个载波中选择CBR最小的载波作为待使用的载波。
当终端设备使用传输模式3时,可以由网络设备基于上述方法进行载波选取并告知终端设备;当终端设备使用传输模式4时,该终端设备可以自主地通过上述方法进行载波选取。网络设备进行载波选取的详细过程可以参考前述终端设备进行载波选取的过程,为了简洁,这里不再赘述。
图6是本申请再一实施例的载波选取的方法的示意性流程图。图6所示的方法可以由通信设备执行,该通信设备包括终端设备或网络设备,该终端设备例如可以为图2中所示的终端设备20或终端设备30, 该网络设备例如可以为图1或图2中所示的网络设备10。下面以终端设备为例来描述,但本申请所述的方法也可以由网络设备等来执行。如图6所示,该载波选取的方法包括:
在610中,获取候选的多个载波的CBR;
在620中,当资源重选计数器C_resel的值等于0时,根据该多个载波的CBR,在该多个载波中进行载波选取。
因此,进行载波选取的过程不依赖于ProbResourceKeep参数,而是基于资源重选计数器C_resel确定当前是否需要进行载波选取,即当C_resel=0时触发终端设备进行载波选取,从而实现了有效的载波选取,降低了系统的复杂度。
其中,该多个载波中每个载波的CBR,为终端设备在每个载波上使用的资源池的CBR。
进一步地,可选地,终端设备在每个载波上使用的资源池,为多个资源池中与该终端所处的区域(即地理区域)对应的资源池,其中,这多个资源池与多个区域之间存在对应关系。
具体地,可以划分多个地理区域,这多个地理区域与多个资源池之间存在对应关系,终端设备在每个载波上传输数据时所使用的资源池,为与终端设备当前所处的地理区域对应的资源池。当终端设备使用该资源池与网络设备进行数据传输时,终端设备测量的CBR为该资源池的CBR,即终端设备测量的CBR为该资源池中的信道资源的CBR。终端设备处于不同地理区域时,在每个载波中使用的资源池也可能不同。
其中,多个地理区域与多个资源池之间的对应关系例如可以通过映射表格、公式等方式来表示,本申请实施例不作限定。并且,一个地理区域可以对应于一个或多个资源池,一个资源池也可以对应于一个或多个地理区域,或者,该多个地理区域与多个资源池之间一一对应。
可选地,该方法由终端设备执行时,在610中,获取候选的多个载波的CBR,包括:终端设备对该多个载波的CBR进行测量,以获得该多个载波的CBR。
具体地,终端设备可以在C_resel的值等于0时,计算候选的多个载波的CBR,并根据该多个载波的CBR,在该多个载波中进行载波选取。
可选地,该方法由终端设备执行,在610中,获取候选的多个载波的CBR,包括:该终端设备接收网络设备发送的广播消息,该广播消息中携带候选的该多个载波的CBR。
可选地,该方法由网络设备执行时,在610中,获取候选的多个载波的CBR,包括:网络设备接收终端设备上报的该多个载波的CBR。
具体地,网络设备可以在C_resel的值等于0时,根据终端设备上报的该多个载波的CBR,在该多个载波中进行载波选取。
可选地,该多个载波中每个载波上配置有一个对应的C_resel,其中,在620中,当C_resel的值等于0时,根据该多个载波的CBR在该多个载波中进行载波选取,包括:当该多个载波上配置的多个C_resel中与当前数据传输所使用的载波(第一载波)对应的C_resel的值等于0时,根据该多个载波的CBR,在该多个载波中进行载波选取。
可选地,该多个载波上配置有相同的C_resel,其中,在620中,当C_resel的值等于0时,根据该多个载波的CBR,在该多个载波中进行载波选取,包括:当该相同的C_resel的值等于0时,根据该多个载波的CBR,在该多个载波中进行载波选取。
也就是说,在候选的多个载波中,每个载波上的HARQ进程可以配置有独立的资源重选计数器C_resel,当与当前数据传输所使用的载波(第一载波)对应的C_resel的值等于0时触发终端设备进行载波选取;或者,所有载波的HARQ进程被配置有相同的C_resel,当该C_resel等于0时触发终端设备进行载波选取。
可选地,在620中,根据该多个载波的CBR,在该多个载波中进行载波选取,包括:根据该多个载波的CBR,在该多个载波中选择CBR最小的载波作为待使用的载波。
当终端设备使用传输模式3时,可以由网络设备基于上述方法进行载波选取并告知终端设备;当终端设备使用传输模式4时,该终端设备可以自主地通过上述方法进行载波选取。网络设备进行载波选取的过程的具体细节,可以参考前述对终端设备的相关描述,为了简洁,这里不再赘述。
图7是本申请再一实施例的载波选取的方法的示意性流程图。图7所示的方法可以由通信设备执行,该通信设备包括终端设备或网络设备,该终端设备例如可以为图2中所示的终端设备20或终端设备30,该网络设备例如可以为图1或图2中所示的网络设备10。下面以终端设备为例来描述,但本申请所述的方法也可以由网络设备等来执行。如图7所示,该载波选取的方法包括:
在710中,获取候选的多个载波的CBR。
在720中,当终端设备的位置由第一区域移动至第二区域时,根据该多个载波的CBR,在该多个载波中进行载波选取。
其中,该多个载波中每个载波的CBR,为终端设备在每个载波上使用的资源池的CBR。
进一步地,可选地,终端设备在每个载波上使用的资源池,为多个资源池中与该终端所处的区域(即地理区域)对应的资源池,其中,这多个资源池与多个区域之间存在对应关系。
具体地,可以划分多个地理区域,这多个地理区域与多个资源池之间存在对应关系,终端设备在每个载波上传输数据时所使用的资源池,为与终端设备当前所处的地理区域对应的资源池。当终端设备使用该资源池与网络设备进行数据传输时,终端设备测量的CBR为该资源池的CBR,即终端设备测量的CBR为该资源池中的信道资源的CBR。终端设备处于不同地理区域时,在每个载波中使用的资源池也可能不同。
其中,多个地理区域与多个资源池之间的对应关系例如可以通过映射表格、公式等方式来表示,本申请实施例不作限定。并且,一个地理区域可以对应于一个或多个资源池,一个资源池也可以对应于一个或多个地理区域,或者,该多个地理区域与多个资源池之间一一对应。
例如,网络设备可以将整个地理区域划分成多个区域,并为每个区域配置相应的资源池,终端设备使用其所在区域对应的资源池进行数据传输。不同区域具有各自的区域标识(zone_id),每个区域的zone_id可以通过以下公式计算:
x 1=Floor(x/L)Mod Nx;
y 1=Floor(y/W)Mod Ny;
zone_id=y1×Nx+x1;
其中,L为每个区域的长度,W为每个区域的宽度,Nx为经度方向上的区域总数,Ny为纬度方向上的区域总数,x为终端设备当前的位置相对于位置(0,0)在经度方向上的距离(单位为米),y为终端设备当前的位置相对于位置(0,0)在纬度方向上的距离(单位为米),Floor为向下取整,Mod为求余。
由于每个载波的CBR可能随着终端设备的位置的变化而快速变化,或者随时间的变化而变化,因此,基于终端设备的位置移动确定是否进行载波选取,并仅在终端设备所在的地理区域发生变化时进行载波选取,从而降低了载波切换的频率,保证了系统的稳定性。
可选地,如果该方法由终端设备执行,那么610中,获取候选的多个载波的CBR,包括:该终端设备对该多个载波的CBR进行测量,以获得该多个载波的CBR。
可选地,如果该方法由终端设备执行,那么610中,获取候选的多个载波的CBR,包括:该终端设备接收网络设备发送的广播消息,该广播消息中携带候选的该多个载波的CBR。
可选地,如果该方法由网络设备执行,那么610中,获取候选的多个载波的CBR,包括:该网络设备接收终端设备上报的该多个载波的CBR。
可选地,在720中,根据该多个载波的CBR,在该多个载波中进行载波选取,包括:根据该多个载波的CBR,在该多个载波中选择CBR最小的载波作为待使用的载波。
基于上面的描述,本申请实施例进一步提供了三种具体的可用于终端设备或网络设备进行载波选取的方法,下面以终端设备为例进行描述。
方式1
可选地,在720中,当终端设备的位置由第一区域移动至第二区域时,根据该多个载波的CBR,在该多个载波中进行载波选取,包括:
当终端设备的位置由第一区域移动至第二区域时,确定第一载波的CBR与第二载波的CBR之间的差值,是否超过第一阈值,其中,该第一载波为当前数据传输所使用的载波,该第二载波为该多个载波中除该第一载波之外的任一载波;
若该第一载波的CBR,与该第二载波的CBR之间的差值,超过该第一阈值,则根据该多个载波的CBR,在该多个载波中进行载波选取。
该实施例中,在终端设备所处的地理区域发生变化时,根据当前载波与其他载波的CBR之间的差值判断是否进行载波选取,并在CBR差值满足条件时进行载波选取,从而进一步降低了载波切换的频率,保证了系统的稳定性。
进一步地,可选地,若该第一载波的CBR,与该第二载波的CBR之间的差值,超过该第一阈值,则根据该多个载波的CBR,在该多个载波中进行载波选取,包括:
若该第一载波的CBR,与该第二载波的CBR之间的差值,超过该第一阈值,则根据该多个载波的CBR,在CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
也就是说,该第一载波的CBR,与该第二载波的CBR之间的差值,超过该第一阈值时,可以在该多个载波中,选择CBR满足条件的那些载波,并在满足条件的这些载波中选择待使用的载波,这里所述的条件,即这些载波的CBR与第一载波的CBR之差超过第一阈值。
可选地,该方法由终端设备执行时,在确定第一载波的CBR,与第二载波的CBR之间的差值,是否超过第一阈值之前,该方法还包括:终端设备获取预配置在该终端设备中的该第一阈值;或者终端设备接收网络设备发送的配置信息,该配置信息包括该第一阈值。
可选地,该方法由网络设备执行时,该方法还包括:网络设备向终端设备发送配置信息,该配置信息包括该第一阈值。
例如,候选的该多个载波的数量为N,N为大于或等于2的正整数。N个载波各自的CBR测量值分别表示为CBR1、BCR2、……、CBRN。假设当前终端设备使用的载波的CBR为CBR1,若终端设备由第一区域移动至第二区域时,对于N个CBR中的任意一个CBRk,如果满足|CBR1-CBRk|>B,B为预设的一个阈值,则会触发终端设备进行载波选取,例如终端设备对N个载波的CBR进行测量,根据得到的N个载波的CBR,从N个载波中选择选择CBR最小的载波作为待使用的载波。
可选地,在720中,若该第一载波的CBR与该第二载波的CBR之间的差值,超过第一阈值,则根据该多个载波的CBR,在该多个载波中进行载波选取,包括:若该第一载波的CBR与该第二载波的CBR之间的差值,超过该第一阈值且持续预设时长,则根据该多个载波的CBR,在该多个载波中进行载波选取。
也就是说,当终端设备由第一区域移动至第二区域时,若该第一载波的CBR与该第二载波的CBR之间的差值,超过该第一阈值且持续预设时长,则进行载波选取例如选取CBR最小的载波作为待使用的载波。
进一步地,可选地,若该第一载波的CBR与该第二载波的CBR之间的差值,超过该第一阈值且持续预设时长,则根据该多个载波的CBR,在该多个载波中进行载波选,包括:若该第一载波的CBR,与该第二载波的CBR之间的差值,超过该第一阈值且持续预设时长,则根据该多个载波的CBR,在CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
也就是说,该第一载波的CBR,与该第二载波的CBR之间的差值,超过该第一阈值且持续该预设时长时,可以在该多个载波中,选择CBR满足条件的那些载波,并在满足条件的这些载波中选择待使用的载波,这里所述的条件,即这些载波的CBR与第一载波的CBR之差超过第一阈值。
可选地,在720中,若该第一载波的CBR与该第二载波的CBR之间的差值,超过第一阈值,则根据该多个载波的CBR,在该多个载波中进行载波选取,包括:若该第一载波的CBR与该第二载波的CBR之间的差值,超过该第一阈值,且该第一载波的CBR大于第二阈值,则根据该多个载波的CBR,在该多个载波中进行载波选取。
也就是说,当终端设备由第一区域移动至第二区域时,若该第一载波的CBR与该第二载波的CBR之间的差值,超过该第一阈值,并且该第一载波的CBR大于第二阈值,则进行载波选取例如选取CBR最小的载波作为待使用的载波。
或者,可选地,在720中,若该第一载波的CBR,与该第二载波的CBR之间的差值,超过该第一阈值,则根据该多个载波的CBR,在该多个载波中进行载波选取,包括:
若该第一载波的CBR,与该第二载波的CBR之间的差值,超过该第一阈值,且该第一载波的CBR小于或等于第二阈值,则选取该第一载波作为待使用的载波;或者
若该第一载波的CBR,与该第二载波的CBR之间的差值,超过该第一阈值,且该第一载波的CBR小于或等于第二阈值,则在CBR小于或等于该第二阈值的载波中进行载波选取。
存在另一种情况,即终端设备的位置由第一区域移动至第二区域时,第一载波的CBR与该第二载波的CBR之间的差值,未超过该第一阈值,这时,可选地,该方法还包括:
当终端设备的位置由第一区域移动至第二区域时,确定第一载波的CBR与第二载波的CBR之间的差值,是否超过第一阈值,其中,该第一载波为当前数据传输所使用的载波,该第二载波为该多个载波中除该第一载波之外的任一载波;
若该第一载波的CBR,与该第二载波的CBR之间的差值,未超过该第一阈值,则选取该第一载波作为待使用的载波;或者
若该第一载波的CBR,与该第二载波的CBR之间的差值,未超过该第一阈值,则在该多个载波中选择任意一个载波作为待使用的载波;或者
若该第一载波的CBR,与该第二载波的CBR之间的差值,未超过该第一阈值,则在该多个载波中选择CBR最小的载波作为待使用的载波。
方式2
可选地,在720之前,即在根据该多个载波的CBR,在该多个载波中进行载波选取之前,该方法还包括:对该多个载波的CBR进行滤波处理,以获得滤波后的该多个载波的CBR;
其中,在720中,根据该多个载波的CBR,在该多个载波中进行载波选取,包括:根据滤波后的 该多个载波的CBR,在该多个载波中进行载波选取。
该实施例中,在终端设备所处的地理区域发生变化时,通过对多个载波的CBR的测量结果进行滤波处理,并基于滤波处理后的该多个载波的CBR,在滤波后的该多个载波中进行载波选取,从而在实现载波选取的同时,降低了载波切换的频率,保证了系统的稳定性。
可选地,对该多个载波的CBR进行滤波处理,包括:对该多个载波的CBR进行平滑滤波。
本申请实施例对平滑滤波的方式不作限定。
例如,该平滑滤波的方式可以为CBR_new=a×CBR_old+(1-a)×CBR_current。
其中,CBR_new为滤波后每个载波的CBR,CBR_current为滤波前每个载波的CBR,CBR_old为上一次载波选取时滤波后的每个载波的CBR,a为滤波系数且0≤a≤1。
可以看出,由于采用了适当的滤波方式对测量得到的CBR进行滤波,避免了CBR速变化导致的频繁的载波切换。
可选地,在720中,根据该多个载波的CBR,在该多个载波中进行载波选取,包括:根据滤波后的该多个载波的CBR,在该多个载波中选择滤波后CBR最小的载波作为待使用的载波。
方式3
可选地,在720之前,即在根据该多个载波的CBR,在该多个载波中进行载波选取之前,该方法还包括:对该多个载波的CBR进行滤波处理,以获得滤波后的该多个载波的CBR;
其中,在720中,当终端设备的位置由第一区域移动至第二区域时,根据该多个载波的CBR,在该多个载波中进行载波选取,包括:
当终端设备的位置由第一区域移动至第二区域时,确定滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,是否超过第一阈值,其中,该第一载波为当前数据传输所使用的载波,该第二载波为该多个载波中除该第一载波之外的任一载波;
若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值,则根据滤波后的该多个载波的CBR,在该多个载波中进行载波选取。
该实施例中,在终端设备所处的地理区域发生变化时,根据当前载波与其他载波的CBR之间的差值判断是否进行载波选取,并在该CBR差值满足条件时,通过对多个载波的CBR的测量结果进行滤波处理,并基于滤波处理后的该多个载波的CBR,在该多个载波中进行载波选取,从而在实现载波选取的同时,进一步降低了载波切换的频率,保证了系统的稳定性。
进一步地,可选地,若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值,则根据滤波后的该多个载波的CBR,在该多个载波中进行载波选取,包括:若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值,则根据滤波后的该多个载波的CBR,在滤波后CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
本申请实施例对滤波的方法不作限定,例如,可以对该多个载波的CBR进行平滑滤波。
可选地,进行平滑滤波后的该多个载波中每个载波的CBR可以为:CBR_new=a×CBR_old+(1-a)×CBR_current,
其中,CBR_new为滤波后每个载波的CBR,CBR_current为滤波前每个载波的CBR,CBR_old为上一次载波选取时滤波后的每个载波的CBR,a为滤波系数且0≤a≤1。
可选地,若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值,则根据滤波后的该多个载波的CBR,在该多个载波中进行载波选取,包括:若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值且持续预设时长,则根据该多个载波的CBR,在该多个载波中进行载波选取。
也就是说,当终端设备由第一区域移动至第二区域时,若滤波后的该第一载波的CBR与滤波后的该第二载波的CBR之间的差值,超过该第一阈值且持续预设时长,则基于滤波后的该多个载波的CBR进行载波选取,例如选取滤波后CBR最小的载波作为待使用的载波。
进一步地,可选地,若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值且持续预设时长,则根据滤波后的该多个载波的CBR,在该多个载波中进行载波选取,包括:若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值且持续预设时长,则根据滤波后的该多个载波的CBR,在滤波后CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
也就是说,滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值且持续该预设时长时,可以在该多个载波中,选择CBR满足条件的那些载波,并在满足条件的这些载波中选择待使用的载波,这里所述的条件,即这些载波的滤波后的CBR与第一载波的滤波后的CBR 之差超过第一阈值。
可选地,若滤波后的该第一载波的CBR与滤波后的该第二载波的CBR之间的差值,超过第一阈值,则根据该多个载波的CBR,在该多个载波中进行载波选取,包括:若滤波后的该第一载波的CBR与滤波后的该第二载波的CBR之间的差值,超过该第一阈值,且滤波后的该第一载波的CBR大于第二阈值,则根据滤波后的该多个载波的CBR,在该多个载波中进行载波选取。
也就是说,当终端设备由第一区域移动至第二区域时,若滤波后的该第一载波的CBR与该第二载波的CBR之间的差值,超过该第一阈值,并且滤波后的该第一载波的CBR大于第二阈值,这时才基于滤波后的该多个载波的CBR进行载波选取,例如选取滤波后CBR最小的载波作为待使用的载波。
进一步地,可选地,若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值,则根据滤波后的该多个载波的CBR,在该多个载波中进行载波选取,包括:
若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值,且滤波后的该第一载波的CBR小于或等于第二阈值,则选取该第一载波作为待使用的载波;或者,
若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,超过该第一阈值,且滤波后的该第一载波的CBR小于或等于第二阈值,则在滤波后CBR小于或等于该第二阈值的载波中进行载波选取。
存在另一种情况,即滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,未超过该第一阈值,这时,可选地,该当终端设备的位置由第一区域移动至第二区域时,根据该多个载波的CBR,在该多个载波中进行载波选取,包括:
当该终端设备的位置由该第一区域移动至该第二区域时,确定滤波后的第一载波的CBR,与滤波后的第二载波的CBR之间的差值,是否超过第一阈值,其中,该第一载波为当前数据传输所使用的载波,该第二载波为该多个载波中除该第一载波之外的任一载波;
若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,未超过该第一阈值,则选取该第一载波作为待使用的载波;或者,
若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,未超过该第一阈值,则在该多个载波中选择任意一个载波作为待使用的载波;或者,
若滤波后的该第一载波的CBR,与滤波后的该第二载波的CBR之间的差值,未超过该第一阈值,则在该多个载波中选择滤波后CBR最小的载波作为待使用的载波。
可选地,在720中,根据该多个载波的CBR,在该多个载波中进行载波选取,包括:根据滤波后的该多个载波的CBR,在该多个载波中选择滤波后CBR最小的载波作为待使用的载波。
应理解,本申请实施例中的载波选取的方法,可以应用在使用不同传输模式(例如前述传输模式3或传输模式4)的终端设备中。当终端设备使用传输模式3时,可以由网络设备基于上述方法进行载波选取并告知终端设备;当终端设备使用传输模式4时,该终端设备可以自主地通过上述方法进行载波选取。网络设备进行载波选取的详细过程可以参考前述终端设备进行载波选取的过程,为了简洁,这里不再赘述。
还应理解,方法400至方法700中的描述均可以相互参考,且方法400至方法700中的实施例中的方法可以结合使用,为了简洁,在此不再赘述。
还应理解,在本申请的各种实施例中,上述各过程的序号的大小并不意味着执行顺序的先后,各过程的执行顺序应以其功能和内在逻辑确定,而不应对本申请实施例的实施过程构成任何限定。
上文中详细描述了根据本申请实施例的载波选取的方法,下面将结合图8至图13,描述根据本申请实施例的装置,方法实施例所描述的技术特征适用于以下装置实施例。
图8是根据本申请实施例的通信设备800的示意性框图。如图8所示,该通信设备800包括获取单元810、滤波单元820和载波选取单元830。其中:
获取单元810,用于获取候选的多个载波的信道占用比率CBR;
滤波单元820,用于对所述获取单元810获取的所示多个载波的CBR进行滤波处理,以获得滤波后的所述多个载波的CBR;
载波选取单元830,用于根据所述滤波单元820滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取。
因此,通过对多个载波的CBR的测量结果进行滤波处理,并基于滤波处理后的该多个载波的CBR,在该多个载波中进行载波选取,从而在实现载波选取的同时,降低了载波切换的频率,保证了系统的稳定性。
可选地,所述滤波单元820具体用于:对所述多个载波的CBR进行平滑滤波。
可选地,进行所述平滑滤波后的所述多个载波中每个载波的CBR为:CBR_new=a×CBR_old+ (1-a)×CBR_current,其中,CBR_new为滤波后所述每个载波的CBR,CBR_current为滤波前所述每个载波的CBR,CBR_old为上一次载波选取时滤波后的所述每个载波的CBR,a为滤波系数且0≤a≤1。
可选地,所述通信设备还包括确定单元,用于:确定滤波后的第一载波的CBR,与滤波后的第二载波的CBR之间的差值,是否超过第一阈值,其中,所述第一载波为当前数据传输所使用的载波,所述第二载波为所述多个载波中除所述第一载波之外的任一载波;
其中,所述载波选取单元830具体用于:若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取。
可选地,所述载波选取单元830具体用于:若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在滤波后CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
可选地,所述通信设备为终端设备,所述终端设备包括收发单元,其中,所述获取单元810还用于:获取预配置在所述终端设备中的所述第一阈值;或者通过所述收发单元接收网络设备发送的配置信息,所述配置信息包括所述第一阈值。
可选地,所述通信设备为网络设备,所述网络设备包括收发单元,所述收发单元用于:向终端设备发送配置信息,所述配置信息包括所述第一阈值。
可选地,所述载波选取单元830具体用于:若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值且持续预设时长,则根据所述多个载波的CBR,在所述多个载波中进行载波选取。
可选地,所述载波选取单元830具体用于:若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值且持续预设时长,则根据滤波后的所述多个载波的CBR,在滤波后CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
可选地,所述载波选取单元830具体用于:若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,且滤波后的所述第一载波的CBR大于第二阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取。
可选地,所述载波选取单元830具体用于:若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,且滤波后的所述第一载波的CBR小于或等于第二阈值,则选取所述第一载波作为待使用的载波;或者,若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,且滤波后的所述第一载波的CBR小于或等于第二阈值,则在滤波后CBR小于或等于所述第二阈值的载波中进行载波选取。
可选地,所述通信设备还包括确定单元,所述确定单元用于:确定滤波后的第一载波的CBR,与滤波后的第二载波的CBR之间的差值,是否超过第一阈值,其中,所述第一载波为当前数据传输所使用的载波,所述第二载波为所述多个载波中除所述第一载波之外的任一载波;
其中,所述载波选取单元具体用于:若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,未超过所述第一阈值,则选取所述第一载波作为待使用的载波;或者,
若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,未超过所述第一阈值,则在所述多个载波中选择任意一个载波作为待使用的载波;或者,
若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,未超过所述第一阈值,则在所述多个载波中选择滤波后CBR最小的载波作为待使用的载波。
可选地,所述载波选取单元830具体用于:当资源重选计数器C_resel的值等于0时,根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取。
可选地,所述多个载波中每个载波上配置有一个对应的C_resel,其中,所述载波选取单元830具体用于:当所述多个载波上配置的多个C_resel中与当前数据传输所使用的载波对应的C_resel的值等于0时,根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取。
可选地,所述多个载波上配置有相同的C_resel,其中,所述载波选取单元830具体用于:当所述相同的C_resel的值等于0时,根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取。
可选地,所述通信设备还包括确定单元,所述确定单元具体用于:当C_resel的值等于0时,确定滤波后的第一载波的CBR,与滤波后的第二载波的CBR之间的差值,是否超过第一阈值,其中,所述第一载波为当前数据传输所使用的载波,所述第二载波为所述多个载波中除所述第一载波之外的任一载波;
其中,所述载波选取单元830具体用于:若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在所述多个载波 中进行载波选取。
可选地,所述载波选取单元830具体用于:若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在滤波后CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
可选地,所述通信设备为终端设备,所述终端设备包括收发单元,其中,所述获取单元810还用于:获取预配置在所述终端设备中的所述第一阈值;或者通过所述收发单元接收网络设备发送的配置信息,所述配置信息包括所述第一阈值。
可选地,所述通信设备为网络设备,所述网络设备包括收发单元,所述收发单元用于:向终端设备发送配置信息,所述配置信息包括所述第一阈值。
可选地,所述多个载波中每个载波上配置有一个对应的C_resel,其中,所述确定单元具体用于:当所述多个载波上配置的多个C_resel中与当前数据传输所使用的载波对应的C_resel的值等于0时,确定滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,是否超过所述第一阈值。
可选地,所述多个载波上配置有相同的C_resel,其中,所述确定单元具体用于:当所述相同的C_resel的值等于0时,确定滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,是否超过所述第一阈值。
可选地,所述载波选取单元830具体用于:若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值且持续预设时长,则根据所述多个载波的CBR,在所述多个载波中进行载波选取。
可选地,所述载波选取单元830具体用于:所述若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在滤波后CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
可选地,所述载波选取单元830具体用于:若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,且滤波后的所述第一载波的CBR大于第二阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取。
可选地,所述载波选取单元830具体用于:若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,且滤波后的所述第一载波的CBR小于或等于第二阈值,则选取所述第一载波作为待使用的载波;或者,若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,且滤波后的所述第一载波的CBR小于或等于第二阈值,则在滤波后CBR小于或等于所述第二阈值的载波中进行载波选取。
可选地,所述通信设备还包括确定单元,所述确定单元用于:确定滤波后的第一载波的CBR,与滤波后的第二载波的CBR之间的差值,是否超过第一阈值,其中,所述第一载波为当前数据传输所使用的载波,所述第二载波为所述多个载波中除所述第一载波之外的任一载波;
其中,可选地,所述载波选取单元830具体用于:若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,未超过所述第一阈值,则选取所述第一载波作为待使用的载波;或者,
若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,未超过所述第一阈值,则在所述多个载波中选择任意一个载波作为待使用的载波;或者,
若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,未超过所述第一阈值,则在所述多个载波中选择滤波后CBR最小的载波作为待使用的载波。
可选地,所述载波选取单元830具体用于:根据滤波后的所述多个载波的CBR,在所述多个载波中选择滤波后CBR最小的载波作为待使用的载波。
可选地,所述通信设备为终端设备,所述获取单元810具体用于:对所述多个载波的CBR进行测量,以获得所述多个载波的CBR。
可选地,所述通信设备为终端设备,所述终端设备还包括收发单元,其中所述获取单元810具体用于:通过所述收发单元接收网络设备发送的广播消息,所述广播消息中携带候选的所述多个载波的CBR。
可选地,所述通信设备为网络设备,所述获取单元810具体用于:通过收发单元接收终端设备上报的所述多个载波的CBR。
可选地,所述载波选取的过程,与资源保持概率ProbResourceKeep参数不相关。
可选地,所述多个载波中每个载波的CBR,为终端设备在所述每个载波上使用的资源池的CBR。
可选地,所述终端设备在所述每个载波上使用的资源池,为多个资源池中与所述终端所处的区域对 应的资源池,其中,所述多个资源池与多个区域之间存在对应关系。
应理解,该通信设备800可以执行上述方法实施例中的通信设备执行的方法400的相应操作,为了简洁,在此不再赘述。
图9是根据本申请实施例的通信设备900的示意性框图。如图9所示,该通信设备900包括获取单元910、确定单元920和载波选取单元930。其中:
获取单元910,用于获取候选的多个载波的信道占用比率CBR;
确定单元920,用于确定第一载波的CBR与第二载波的CBR之间的差值,是否超过第一阈值,其中,所述第一载波为当前数据传输所使用的载波,所述第二载波为所述多个载波中除所述第一载波之外的任一载波;
载波选取单元930,用于在所述第一载波的CBR与所述第二载波的CBR之间的差值超过第一阈值时,在所述获取单元910获取的所述多个载波中进行载波选取。
因此,通过判断当前载波与其他载波的CBR之差,确定是否进行载波选取,并仅在CBR之差满足条件时进行载波选取,从而降低了载波切换的频率,保证了系统的稳定性。
可选地,所述载波选取单元930具体用于:若所述第一载波的CBR与所述第二载波的CBR之间的差值,超过第一阈值,则根据所述多个载波的CBR,在CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
可选地,所述载波选取单元930具体用于:若所述第一载波的CBR与所述第二载波的CBR之间的差值超过第一阈值且持续预设时长,则根据所述多个载波的CBR,在所述多个载波中进行载波选取。
可选地,所述载波选取单元930具体用于:若所述第一载波的CBR,与所述第二载波的CBR之间的差值,超过所述第一阈值,则根据所述多个载波的CBR,在CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
可选地,所述载波选取单元930具体用于:若所述第一载波的CBR与所述第二载波的CBR之间的差值超过第一阈值,且所述第一载波的CBR大于第二阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取。
可选地,所述载波选取单元930具体用于:若所述第一载波的CBR,与所述第二载波的CBR之间的差值,超过所述第一阈值,且所述第一载波的CBR小于或等于第二阈值,则选取所述第一载波作为待使用的载波;或者,
若所述第一载波的CBR,与所述第二载波的CBR之间的差值,超过所述第一阈值,且所述第一载波的CBR小于或等于第二阈值,则在CBR小于或等于所述第二阈值的载波中进行载波选取。
可选地,所述载波选取单元930还用于:若所述第一载波的CBR,与所述第二载波的CBR之间的差值,未超过所述第一阈值,则选取所述第一载波作为待使用的载波;或者,若所述第一载波的CBR,与所述第二载波的CBR之间的差值,未超过所述第一阈值,则在所述多个载波中选择任意一个载波作为待使用的载波;或者,若所述第一载波的CBR,与所述第二载波的CBR之间的差值,未超过所述第一阈值,则在所述多个载波中选择滤波后CBR最小的载波作为待使用的载波。
可选地,所述确定单元920具体用于:当资源重选计数器C_resel的值等于0时,确定所述第一载波的CBR与所述第二载波的CBR之间的差值,是否超过所述第一阈值。
可选地,所述多个载波中每个载波上配置有一个对应的C_resel,其中,所述确定单元920具体用于:当所述多个载波上配置的多个C_resel中与当前数据传输所使用的载波对应的C_resel的值等于0时,确定滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,是否超过所述第一阈值。
可选地,所述多个载波上配置有相同的C_resel,其中,所述确定单元920具体用于:当所述相同的C_resel的值等于0时,确定滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,是否超过所述第一阈值。
可选地,所述载波选取单元930具体用于:根据所述多个载波的CBR,在所述多个载波中选择CBR最小的载波作为待使用的载波。
可选地,所述通信设备为终端设备,所述获取单元910具体用于:对所述多个载波的CBR进行测量,以获得所述多个载波的CBR。
可选地,所述通信设备为终端设备,所述终端设备包括收发单元,所述获取单元910具体用于:通过所述收发单元接收网络设备发送的广播消息,所述广播消息中携带候选的所述多个载波的CBR。
可选地,所述终端设备包括收发单元,其中,所述获取单元910具体用于:获取预配置在所述终端设备中的所述第一阈值;或者通过所述收发单元接收网络设备发送的配置信息,所述配置信息包括所述第一阈值。
可选地,其特征在于,所述通信设备为网络设备,所述网络设备包括收发单元,其中,所述获取单元910具体用于:通过所述收发单元接收终端设备上报的所述多个载波的CBR。
可选地,所述收发单元还用于:向终端设备发送配置信息,所述配置信息包括所述第一阈值。
可选地,所述载波选取的过程,与资源保持概率ProbResourceKeep参数不相关。
可选地,所述多个载波中每个载波的CBR,为终端设备在所述每个载波上使用的资源池的CBR。
可选地,所述终端设备在所述每个载波上使用的资源池,为多个资源池中与所述终端所处的区域对应的资源池,其中,所述多个资源池与多个区域之间存在对应关系。
应理解,该通信设备900可以执行上述方法实施例中的通信设备执行的方法500的相应操作,为了简洁,在此不再赘述。
图10是根据本申请实施例的通信设备1000的示意性框图。如图10所示,该通信设备1000包括获取单元1010和载波选取单元1020。其中:
获取单元1010,用于获取候选的多个载波的信道占用比率CBR;
载波选取单元1020,用于在资源重选计数器C_resel的值等于0时,根据所述获取单元获取的所述多个载波的CBR,在所述多个载波中进行载波选取。
因此,进行载波选取的过程不依赖于资源保持概率ProbResourceKeep参数,而是基于资源重选计数器C_resel确定当前是否需要进行载波选取,从而实现有效的载波选取,降低了系统的复杂度。
可选地,,所述多个载波中每个载波上配置有一个对应的C_resel,其中,所述载波选取单元1020具体用于:当所述多个载波上配置的多个C_resel中与当前数据传输所使用的载波对应的C_resel的值等于0时,根据所述多个载波的CBR,在所述多个载波中进行载波选取。
可选地,所述多个载波上配置有相同的C_resel,其中,所述载波选取单元1020具体用于:当所述相同的C_resel的值等于0时,根据所述多个载波的CBR,在所述多个载波中进行载波选取。
可选地,所述载波选取单元1020具体用于:根据所述多个载波的CBR,在所述多个载波中选择CBR最小的载波作为待使用的载波。
可选地,所述通信设备为终端设备,所述获取单元1010具体用于:对所述多个载波的CBR进行测量,以获得所述多个载波的CBR。
可选地,所述通信设备为终端设备,所述终端设备包括收发单元,其中,所述获取单元具体用于:通过所述收发单元接收网络设备发送的广播消息,所述广播消息中携带候选的所述多个载波的CBR。
可选地,所述通信设备为网络设备,所述网络设备包括收发单元,其中,所述获取单元1010具体用于:通过所述收发单元备接收终端设备上报的所述多个载波的CBR。
可选地,所述载波选取的过程,与资源保持概率ProbResourceKeep参数不相关。
可选地,所述多个载波中每个载波的CBR,为终端设备在所述每个载波上使用的资源池的CBR。
可选地,所述终端设备在所述每个载波上使用的资源池,为多个资源池中与所述终端所处的区域对应的资源池,其中,所述多个资源池与多个区域之间存在对应关系。
应理解,该通信设备1000可以执行上述方法实施例中的通信设备执行的方法600的相应操作,为了简洁,在此不再赘述。
图11是根据本申请实施例的通信设备1100的示意性框图。如图11所示,该通信设备1100包括获取单元1110和载波选取单元1120。其中:
获取单元1110,用于获取候选的多个载波的信道占用比率CBR;
载波选取单元1120,用于在终端设备的位置由第一区域移动至第二区域时,根据所述获取单元1110获取的所述多个载波的CBR,在所述多个载波中进行载波选取。
因此,基于终端设备的位置移动确定是否进行载波选取,并仅在终端设备所在的地理区域发生变化时进行载波选取,从而降低了载波切换的频率,保证了系统的稳定性。
可选地,所述载波选取单元1120具体用于:当终端设备的位置由第一区域移动至第二区域时,确定第一载波的CBR与第二载波的CBR之间的差值,是否超过第一阈值,其中,所述第一载波为当前数据传输所使用的载波,所述第二载波为所述多个载波中除所述第一载波之外的任一载波;若所述第一载波的CBR,与所述第二载波的CBR之间的差值,超过所述第一阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取。
可选地,所述载波选取单元1120具体用于:若所述第一载波的CBR,与所述第二载波的CBR之间的差值,超过所述第一阈值,则根据所述多个载波的CBR,在CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
可选地,所述载波选取单元1120具体用于:若所述第一载波的CBR与所述第二载波的CBR之间的差值,超过所述第一阈值且持续预设时长,则根据所述多个载波的CBR,在所述多个载波中进行载 波选取。
所述载波选取单元1120具体用于:若所述第一载波的CBR,与所述第二载波的CBR之间的差值,超过所述第一阈值且持续预设时长,则根据所述多个载波的CBR,在CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
可选地,所述载波选取单元1120具体用于:若所述第一载波的CBR与所述第二载波的CBR之间的差值,超过所述第一阈值,且所述第一载波的CBR大于第二阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取。
可选地,所述载波选取单元1120具体用于:若所述第一载波的CBR,与所述第二载波的CBR之间的差值,超过所述第一阈值,且所述第一载波的CBR小于或等于第二阈值,则选取所述第一载波作为待使用的载波;或者,若所述第一载波的CBR,与所述第二载波的CBR之间的差值,超过所述第一阈值,且所述第一载波的CBR小于或等于第二阈值,则在CBR小于或等于所述第二阈值的载波中进行载波选取。
可选地,所述通信设备还包括确定单元,所述确定单元用于:当终端设备的位置由第一区域移动至第二区域时,确定第一载波的CBR与第二载波的CBR之间的差值是否超过第一阈值,其中,所述第一载波为当前数据传输所使用的载波,所述第二载波为所述多个载波中除所述第一载波之外的任一载波;
其中,所述载波选取单元1120具体用于:若所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,未超过所述第一阈值,则选取所述第一载波作为待使用的载波;或者,若所述第一载波的CBR,与所述第二载波的CBR之间的差值,未超过所述第一阈值,则在所述多个载波中选择任意一个载波作为待使用的载波;或者,若所述第一载波的CBR,与所述第二载波的CBR之间的差值,未超过所述第一阈值,则在所述多个载波中选择CBR最小的载波作为待使用的载波。
可选地,所述通信设备为终端设备,所述终端设备包括收发单元,其中,所述获取单元1110具体用于:获取预配置在所述终端设备中的所述第一阈值;或者通过所述收发单元接收网络设备发送的配置信息,所述配置信息包括所述第一阈值。
可选地,所述通信设备为网络设备,所述网络设备包括收发单元,其中,所述获取单元1110具体用于:通过所述收发单元向终端设备发送配置信息,所述配置信息包括所述第一阈值。
可选地,所述载波选取单元1120具体用于:根据所述多个载波的CBR,在所述多个载波中选择CBR最小的载波作为待使用的载波。
可选地,所述通信设备还包括滤波单元,所述滤波单元用于:对所述多个载波的CBR进行滤波处理,以获得滤波后的所述多个载波的CBR;其中所述载波选取单元1120具体用于:当终端设备的位置由第一区域移动至第二区域时,根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取。
可选地,所述滤波单元具体用于:对所述多个载波的CBR进行平滑滤波。
可选地,进行所述平滑滤波后的所述多个载波中每个载波的CBR为:CBR_new=a×CBR_old+(1-a)×CBR_current,其中,CBR_new为滤波后所述每个载波的CBR,CBR_current为滤波前所述每个载波的CBR,CBR_old为上一次载波选取时滤波后的所述每个载波的CBR,a为滤波系数且0≤a≤1。
可选地,所述通信设备还包括滤波单元,所述滤波单元用于:对所述多个载波的CBR进行滤波处理,以获得滤波后的所述多个载波的CBR;
其中,所述载波选取单元具体用于:当所述终端设备的位置由所述第一区域移动至所述第二区域时,确定滤波后的第一载波的CBR,与滤波后的第二载波的CBR之间的差值,是否超过第一阈值,其中,所述第一载波为当前数据传输所使用的载波,所述第二载波为所述多个载波中除所述第一载波之外的任一载波;若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取。
可选地,所述载波选取单元1120具体用于:若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在滤波后CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
可选地,所述滤波单元具体用于:对所述多个载波的CBR进行平滑滤波。
可选地,进行所述平滑滤波后的所述多个载波中每个载波的CBR为:CBR_new=a×CBR_old+(1-a)×CBR_current,其中,CBR_new为滤波后所述每个载波的CBR,CBR_current为滤波前所述每个载波的CBR,CBR_old为上一次载波选取时滤波后的所述每个载波的CBR,a为滤波系数且0≤a≤1。
可选地,所述载波选取单元1120具体用于:若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值且持续预设时长,则根据所述多个载波的CBR,在所述多个载波中进行载波选取。
可选地,所述载波选取单元1120具体用于:若滤波后的所述第一载波的CBR,与滤波后的所述第 二载波的CBR之间的差值,超过所述第一阈值且持续预设时长,则根据滤波后的所述多个载波的CBR,在滤波后CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
可选地,所述载波选取单元1120具体用于:若滤波后的所述第一载波的CBR与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,且所述第一载波的CBR大于第二阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取。
可选地,所述载波选取单元1120具体用于:若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,且滤波后的所述第一载波的CBR小于或等于第二阈值,则选取所述第一载波作为待使用的载波;或者,若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,且滤波后的所述第一载波的CBR小于或等于第二阈值,则在滤波后CBR小于或等于所述第二阈值的载波中进行载波选取。
可选地,所述通信设备还包括滤波单元,所述滤波单元用于:对所述多个载波的CBR进行滤波处理,以获得滤波后的所述多个载波的CBR;
其中,所述载波选取单元1120具体用于:当所述终端设备的位置由所述第一区域移动至所述第二区域时,确定滤波后的第一载波的CBR,与滤波后的第二载波的CBR之间的差值,是否超过第一阈值,其中,所述第一载波为当前数据传输所使用的载波,所述第二载波为所述多个载波中除所述第一载波之外的任一载波;若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,未超过所述第一阈值,则选取所述第一载波作为待使用的载波;或者,若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,未超过所述第一阈值,则在所述多个载波中选择任意一个载波作为待使用的载波;或者,若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,未超过所述第一阈值,则在所述多个载波中选择滤波后CBR最小的载波作为待使用的载波。可选地,所述载波选取单元1120具体用于:根据滤波后的所述多个载波的CBR,在所述多个载波中选择滤波后CBR最小的载波作为待使用的载波。
可选地,所述通信设备为终端设备,所述获取单元1110用于:对所述多个载波的CBR进行测量,以获得所述多个载波的CBR。
可选地,所述通信设备为终端设备,所述终端设备包括收发单元,所述获取单元1110具体用于:通过所述收发单元接收网络设备发送的广播消息,所述广播消息中携带候选的所述多个载波的CBR。
可选地,所述通信设备为网络设备,所述网络设备包括收发单元,其中,所述获取单元1110具体用于:通过所述收发单元接收终端设备上报的所述多个载波的CBR。
可选地,所述多个载波中每个载波的CBR,为终端设备在所述每个载波上使用的资源池的CBR。
可选地,所述终端设备在所述每个载波上使用的资源池,为多个资源池中与所述终端所处的区域对应的资源池,其中,所述多个资源池与多个区域之间存在对应关系。
应理解,该通信设备1000可以执行上述方法实施例中的通信设备执行的方法700的相应操作,为了简洁,在此不再赘述。
图12是根据本申请实施例的通信设备1200的示意性结构图。如图12所示,该通信设备包括处理器1210、收发器1220和存储器1230,其中,该处理器1210、收发器1220和存储器1230之间通过内部连接通路互相通信。该存储器1230用于存储指令,该处理器1210用于执行该存储器1230存储的指令,以控制该收发器1220接收信号或发送信号。
可选地,该处理器1210可以调用存储器1230中存储的程序代码,执行方法实施例中的通信设备执行的方法400的相应操作,为了简洁,在此不再赘述。
可选地,该处理器1210可以调用存储器1230中存储的程序代码,执行方法实施例中的通信设备执行的方法500的相应操作,为了简洁,在此不再赘述。
可选地,该处理器1210可以调用存储器1230中存储的程序代码,执行方法实施例中的通信设备执行的方法600的相应操作,为了简洁,在此不再赘述。
可选地,该处理器1210可以调用存储器1230中存储的程序代码,执行方法实施例中的通信设备执行的方法700的相应操作,为了简洁,在此不再赘述。
应理解,本申请实施例的处理器可能是一种集成电路芯片,具有信号的处理能力。在实现过程中,上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(Digital Signal Processor,DSP)、专用集成电路(ApplicationSpecific Integrated Circuit,ASIC)、现成可编程门阵列(Field Programmable Gate Array,FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成,或者用译码处 理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器,闪存、只读存储器,可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器,处理器读取存储器中的信息,结合其硬件完成上述方法的步骤。
可以理解,本申请实施例中的存储器可以是易失性存储器或非易失性存储器,或可包括易失性和非易失性存储器两者。其中,非易失性存储器可以是只读存储器(Read-Only Memory,ROM)、可编程只读存储器(Programmable ROM,PROM)、可擦除可编程只读存储器(Erasable PROM,EPROM)、电可擦除可编程只读存储器(Electrically EPROM,EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory,RAM),其用作外部高速缓存。通过示例性但不是限制性说明,许多形式的RAM可用,例如静态随机存取存储器(Static RAM,SRAM)、动态随机存取存储器(DynamicRAM,DRAM)、同步动态随机存取存储器(Synchronous DRAM,SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM,DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM,ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM,SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM,DR RAM)。应注意,本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
图13是本申请实施例的系统芯片的一个示意性结构图。图13的系统芯片1300包括输入接口1301、输出接口1302、至少一个处理器1303、存储器1304,所述输入接口1301、输出接口1302、所述处理器1303以及存储器1304之间通过内部连接通路互相连接。所述处理器1303用于执行所述存储器1304中的代码。
可选地,当所述代码被执行时,所述处理器1303可以实现方法实施例中由通信设备执行的方法400。为了简洁,这里不再赘述。
可选地,当所述代码被执行时,所述处理器1303可以实现方法实施例中由通信设备执行的方法500。为了简洁,这里不再赘述。
可选地,当所述代码被执行时,所述处理器1303可以实现方法实施例中由通信设备执行的方法600。为了简洁,这里不再赘述。
可选地,当所述代码被执行时,所述处理器1303可以实现方法实施例中由通信设备执行的方法700。为了简洁,这里不再赘述。
本领域普通技术人员可以意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的系统、装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
在本申请所提供的几个实施例中,应该理解到,所揭露的系统、装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,该单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外,在本申请各个实施例中的各功能单元可以集成在一个监测单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(Read-OnlyMemory,)ROM、随机存取存储器(Random Access Memory,RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述,仅为本申请的具体实施方式,但本申请的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本申请揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本申请的保护范围之内。因此,本申请的保护范围应所述以权利要求的保护范围为准。

Claims (95)

  1. 一种载波选取的方法,其特征在于,所述方法包括:
    获取候选的多个载波的信道占用比率CBR;
    对所述多个载波的CBR进行滤波处理,以获得滤波后的所述多个载波的CBR;
    根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取。
  2. 根据权利要求1所述的方法,其特征在于,所述对所述多个载波的CBR进行滤波处理,包括:
    对所述多个载波的CBR进行平滑滤波。
  3. 根据权利要求2所述的方法,其特征在于,进行所述平滑滤波后的所述多个载波中每个载波的CBR为:
    CBR_new=a×CBR_old+(1-a)×CBR_current,
    其中,CBR_new为滤波后所述每个载波的CBR,CBR_current为滤波前所述每个载波的CBR,CBR_old为上一次载波选取时滤波后的所述每个载波的CBR,a为滤波系数且0≤a≤1。
  4. 根据权利要求1至3中任一项所述的方法,其特征在于,在所述根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取之前,所述方法还包括:
    确定滤波后的第一载波的CBR,与滤波后的第二载波的CBR之间的差值,是否超过第一阈值,其中,所述第一载波为当前数据传输所使用的载波,所述第二载波为所述多个载波中除所述第一载波之外的任一载波;
    其中,所述根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取。
  5. 根据权利要求4所述的方法,其特征在于,所述若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
  6. 根据权利要求4或5所述的方法,其特征在于,所述方法由终端设备执行,在所述确定滤波后的第一载波的CBR,与滤波后的第二载波的CBR之间的差值,是否超过第一阈值之前,所述方法还包括:
    所述终端设备获取预配置在所述终端设备中的所述第一阈值;或者
    所述终端设备接收网络设备发送的配置信息,所述配置信息包括所述第一阈值。
  7. 根据权利要求4或5所述的方法,其特征在于,所述方法由网络设备执行,所述方法还包括:
    所述网络设备向终端设备发送配置信息,所述配置信息包括所述第一阈值。
  8. 根据权利要求4至7中任一项所述的方法,其特征在于,所述若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值且持续预设时长,则根据所述多个载波的CBR,在所述多个载波中进行载波选取。
  9. 根据权利要求8所述的方法,其特征在于,所述若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值且持续预设时长,则根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值且持续预设时长,则根据滤波后的所述多个载波的CBR,在滤波后CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
  10. 根据权利要求4至7中任一项所述的方法,其特征在于,所述若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,且滤波后的所述第一载波的CBR大于第二阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取。
  11. 根据权利要求10所述的方法,其特征在于,所述若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在所 述多个载波中进行载波选取,包括:
    若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,且滤波后的所述第一载波的CBR小于或等于第二阈值,则选取所述第一载波作为待使用的载波;或者
    若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,且滤波后的所述第一载波的CBR小于或等于第二阈值,则在滤波后CBR小于或等于所述第二阈值的载波中进行载波选取。
  12. 根据权利要求1至3中任一项所述的方法,其特征在于,在所述根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取之前,所述方法还包括:
    确定滤波后的第一载波的CBR,与滤波后的第二载波的CBR之间的差值,是否超过第一阈值,其中,所述第一载波为当前数据传输所使用的载波,所述第二载波为所述多个载波中除所述第一载波之外的任一载波;
    其中,所述根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,未超过所述第一阈值,则选取所述第一载波作为待使用的载波;或者
    若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,未超过所述第一阈值,则在所述多个载波中选择任意一个载波作为待使用的载波;或者
    若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,未超过所述第一阈值,则在所述多个载波中选择滤波后CBR最小的载波作为待使用的载波。
  13. 根据权利要求1至3中任一项所述的方法,其特征在于,所述根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    当资源重选计数器C_resel的值等于0时,根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取。
  14. 根据权利要求13所述的方法,其特征在于,所述多个载波中每个载波上配置有一个对应的C_resel,
    其中,所述当C_resel的值等于0时,根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    当所述多个载波上配置的多个C_resel中与当前数据传输所使用的载波对应的C_resel的值等于0时,根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取。
  15. 根据权利要求13所述的方法,其特征在于,所述多个载波上配置有相同的C_resel,
    其中,所述当C_resel的值等于0时,根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    当所述相同的C_resel的值等于0时,根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取。
  16. 根据权利要求1至3中任一项所述的方法,其特征在于,在所述根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取之前,所述方法还包括:
    当C_resel的值等于0时,确定滤波后的第一载波的CBR,与滤波后的第二载波的CBR之间的差值,是否超过第一阈值,其中,所述第一载波为当前数据传输所使用的载波,所述第二载波为所述多个载波中除所述第一载波之外的任一载波;
    其中,所述根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取。
  17. 根据权利要求16所述的方法,其特征在于,所述若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在滤波后CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
  18. 根据权利要求16或17所述的方法,其特征在于,所述方法由终端设备执行,在所述确定滤波后的第一载波的CBR,与滤波后的第二载波的CBR之间的差值,是否超过第一阈值之前,所述方法还包括:
    所述终端设备获取预配置在所述终端设备中的所述第一阈值;或者
    所述终端设备接收网络设备发送的配置信息,所述配置信息包括所述第一阈值。
  19. 根据权利要求16或17所述的方法,其特征在于,所述方法由网络设备执行,所述方法还包括:
    所述网络设备向终端设备发送配置信息,所述配置信息包括所述第一阈值。
  20. 根据权利要求16至19中任一项所述的方法,其特征在于,所述多个载波中每个载波上配置有一个对应的C_resel,
    其中,所述当所述C_resel的值等于0时,确定滤波后的第一载波的CBR,与滤波后的第二载波的CBR之间的差值,是否超过第一阈值,包括:
    当所述多个载波上配置的多个C_resel中与当前数据传输所使用的载波对应的C_resel的值等于0时,确定滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,是否超过所述第一阈值。
  21. 根据权利要求16至19中任一项所述的方法,其特征在于,所述多个载波上配置有相同的C_resel,
    其中,所述当C_resel的值等于0时,确定滤波后的第一载波的CBR,与滤波后的第二载波的CBR之间的差值,是否超过第一阈值,包括:
    当所述相同的C_resel的值等于0时,确定滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,是否超过所述第一阈值。
  22. 根据权利要求16至21中任一项所述的方法,其特征在于,所述若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值且持续预设时长,则根据所述多个载波的CBR,在所述多个载波中进行载波选取。
  23. 根据权利要求22所述的方法,其特征在于,若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值且持续预设时长,则根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    所述若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值且持续预设时长,则根据滤波后的所述多个载波的CBR,在滤波后CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
  24. 根据权利要求16至21中任一项所述的方法,其特征在于,所述若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,且滤波后的所述第一载波的CBR大于第二阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取。
  25. 根据权利要求24所述的方法,其特征在于,所述若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,且滤波后的所述第一载波的CBR小于或等于第二阈值,则选取所述第一载波作为待使用的载波;或者
    若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,且滤波后的所述第一载波的CBR小于或等于第二阈值,则在滤波后CBR小于或等于所述第二阈值的载波中进行载波选取。
  26. 根据权利要求1至3中任一项所述的方法,其特征在于,在所述根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取之前,所述方法还包括:
    确定滤波后的第一载波的CBR,与滤波后的第二载波的CBR之间的差值,是否超过第一阈值,其中,所述第一载波为当前数据传输所使用的载波,所述第二载波为所述多个载波中除所述第一载波之外的任一载波;
    其中,所述根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,未超过所述第一阈值,则选取所述第一载波作为待使用的载波;或者
    若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,未超过所述第一阈值,则在所述多个载波中选择任意一个载波作为待使用的载波;或者
    若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,未超过所述第一阈值,则在所述多个载波中选择滤波后CBR最小的载波作为待使用的载波。
  27. 根据权利要求1至26中任一项所述的方法,其特征在于,所述根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    根据滤波后的所述多个载波的CBR,在所述多个载波中选择滤波后CBR最小的载波作为待使用的载波。
  28. 根据权利要求1至27中任一项所述的方法,其特征在于,所述方法由终端设备执行,所述获取候选的多个载波的CBR,包括:
    所述终端设备对所述多个载波的CBR进行测量,以获得所述多个载波的CBR。
  29. 根据权利要求1至27中任一项所述的方法,其特征在于,所述方法由终端设备执行,所述获取候选的多个载波的CBR,包括:
    所述终端设备接收网络设备发送的广播消息,所述广播消息中携带候选的所述多个载波的CBR。
  30. 根据权利要求1至27中任一项所述的方法,其特征在于,所述方法由网络设备执行,所述获取候选的多个载波的CBR,包括:
    所述网络设备接收终端设备上报的所述多个载波的CBR。
  31. 根据权利要求1至30中任一项所述的方法,其特征在于,所述载波选取的过程,与资源保持概率ProbResourceKeep参数不相关。
  32. 根据权利要求1至31中任一项所述的方法,其特征在于,所述多个载波中每个载波的CBR,为终端设备在所述每个载波上使用的资源池的CBR。
  33. 根据权利要求32所述的方法,其特征在于,所述终端设备在所述每个载波上使用的资源池,为多个资源池中与所述终端所处的区域对应的资源池,其中,所述多个资源池与多个区域之间存在对应关系。
  34. 一种载波选取的方法,其特征在于,所述方法包括:
    获取候选的多个载波的信道占用比率CBR;
    确定第一载波的CBR与第二载波的CBR之间的差值,是否超过第一阈值,其中,所述第一载波为当前数据传输所使用的载波,所述第二载波为所述多个载波中除所述第一载波之外的任一载波;
    若所述第一载波的CBR与所述第二载波的CBR之间的差值,超过第一阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取。
  35. 根据权利要求34所述的方法,其特征在于,所述若所述第一载波的CBR与所述第二载波的CBR之间的差值,超过第一阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    若所述第一载波的CBR与所述第二载波的CBR之间的差值,超过第一阈值,则根据所述多个载波的CBR,在CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
  36. 根据权利要求35所述的方法,其特征在于,所述若所述第一载波的CBR与所述第二载波的CBR之间的差值,超过第一阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    若所述第一载波的CBR与所述第二载波的CBR之间的差值超过第一阈值且持续预设时长,则根据所述多个载波的CBR,在所述多个载波中进行载波选取。
  37. 根据权利要求36所述的方法,其特征在于,所述若所述第一载波的CBR与所述第二载波的CBR之间的差值超过第一阈值且持续预设时长,则根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    若第一载波的CBR,与所述第二载波的CBR之间的差值,超过所述第一阈值且持续预设时长,则根据所述多个载波的CBR,在CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
  38. 根据权利要求35所述的方法,其特征在于,所述若所述第一载波的CBR与所述第二载波的CBR之间的差值超过第一阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    若所述第一载波的CBR与所述第二载波的CBR之间的差值超过第一阈值,且所述第一载波的CBR大于第二阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取。
  39. 根据权利要求38所述的方法,其特征在于,所述若所述第一载波的CBR与所述第二载波的CBR之间的差值超过第一阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    若所述第一载波的CBR,与所述第二载波的CBR之间的差值,超过所述第一阈值,且所述第一载波的CBR小于或等于第二阈值,则选取所述第一载波作为待使用的载波;或者
    若所述第一载波的CBR,与所述第二载波的CBR之间的差值,超过所述第一阈值,且所述第一载波的CBR小于或等于第二阈值,则在CBR小于或等于所述第二阈值的载波中进行载波选取。
  40. 根据权利要求34至39中任一项所述的方法,其特征在于,所述方法还包括:
    若所述第一载波的CBR,与所述第二载波的CBR之间的差值,未超过所述第一阈值,则选取所述第一载波作为待使用的载波;或者
    若所述第一载波的CBR,与所述第二载波的CBR之间的差值,未超过所述第一阈值,则在所述多个载波中选择任意一个载波作为待使用的载波;或者
    若所述第一载波的CBR,与所述第二载波的CBR之间的差值,未超过所述第一阈值,则在所述多个载波中选择CBR最小的载波作为待使用的载波。
  41. 根据权利要求34至40中任一项所述的方法,其特征在于,所述确定第一载波的CBR与第二载波的CBR之间的差值,是否超过第一阈值,包括:
    当资源重选计数器C_resel的值等于0时,确定所述第一载波的CBR与所述第二载波的CBR之间的差值,是否超过所述第一阈值。
  42. 根据权利要求41所述的方法,其特征在于,所述多个载波中每个载波上配置有一个对应的C_resel,
    其中,所述当所述C_resel的值等于0时,确定第一载波的CBR,与第二载波的CBR之间的差值,是否超过第一阈值,包括:
    当所述多个载波上配置的多个C_resel中与当前数据传输所使用的载波对应的C_resel的值等于0时,确定所述第一载波的CBR,与所述第二载波的CBR之间的差值,是否超过所述第一阈值。
  43. 根据权利要求41所述的方法,其特征在于,所述多个载波上配置有相同的C_resel,
    其中,所述当C_resel的值等于0时,确定第一载波的CBR,与第二载波的CBR之间的差值,是否超过第一阈值,包括:
    当所述相同的C_resel的值等于0时,确定所述第一载波的CBR,与所述第二载波的CBR之间的差值,是否超过所述第一阈值。
  44. 根据权利要求34至43中任一项所述的方法,其特征在于,所述在所述多个载波中进行载波选取,包括:
    根据所述多个载波的CBR,在所述多个载波中选择CBR最小的载波作为待使用的载波。
  45. 根据权利要求34至44中任一项所述的方法,其特征在于,所述方法由终端设备执行,所述获取候选的多个载波的CBR,包括:
    所述终端设备对所述多个载波的CBR进行测量,以获得所述多个载波的CBR。
  46. 根据权利要求34至44中任一项所述的方法,其特征在于,所述方法由终端设备执行,所述获取候选的多个载波的CBR,包括:
    所述终端设备接收网络设备发送的广播消息,所述广播消息中携带候选的所述多个载波的CBR。
  47. 根据权利要求45或46所述的方法,其特征在于,在所述确定第一载波的CBR与第二载波的CBR之间的差值,是否超过第一阈值之前,所述方法还包括:
    所述终端设备获取预配置在所述终端设备中的所述第一阈值;或者
    所述终端设备接收网络设备发送的配置信息,所述配置信息包括所述第一阈值。
  48. 根据权利要求34至44中任一项所述的方法,其特征在于,所述方法由网络设备执行,所述获取候选的多个载波的CBR,包括:
    所述网络设备接收终端设备上报的所述多个载波的CBR。
  49. 根据权利要求48所述的方法,其特征在于,所述方法还包括:
    所述网络设备向终端设备发送配置信息,所述配置信息包括所述第一阈值。
  50. 根据权利要求34至49中任一项所述的方法,其特征在于,所述载波选取的过程,与资源保持概率ProbResourceKeep参数不相关。
  51. 根据权利要求34至50中任一项所述的方法,其特征在于,所述多个载波中每个载波的CBR,为终端设备在所述每个载波上使用的资源池的CBR。
  52. 根据权利要求51所述的方法,其特征在于,所述终端设备在所述每个载波上使用的资源池,为多个资源池中与所述终端所处的区域对应的资源池,其中,所述多个资源池与多个区域之间存在对应关系。
  53. 一种载波选取的方法,其特征在于,所述方法包括:
    获取候选的多个载波的信道占用比率CBR;
    当资源重选计数器C_resel的值等于0时,根据所述多个载波的CBR,在所述多个载波中进行载波 选取。
  54. 根据权利要求53所述的方法,其特征在于,所述多个载波中每个载波上配置有一个对应的C_resel,
    其中,所述当C_resel的值等于0时,根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    当所述多个载波上配置的多个C_resel中与当前数据传输所使用的载波对应的C_resel的值等于0时,根据所述多个载波的CBR,在所述多个载波中进行载波选取。
  55. 根据权利要求53所述的方法,其特征在于,所述多个载波上配置有相同的C_resel,
    其中,所述当C_resel的值等于0时,根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    当所述相同的C_resel的值等于0时,根据所述多个载波的CBR,在所述多个载波中进行载波选取。
  56. 根据权利要求53至55中任一项所述的方法,其特征在于,所述根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    根据所述多个载波的CBR,在所述多个载波中选择CBR最小的载波作为待使用的载波。
  57. 根据权利要求53至56中任一项所述的方法,其特征在于,所述方法由终端设备执行,所述获取候选的多个载波的CBR,包括:
    所述终端设备对所述多个载波的CBR进行测量,以获得所述多个载波的CBR。
  58. 根据权利要求53至56中任一项所述的方法,其特征在于,所述方法由终端设备执行,所述获取候选的多个载波的CBR,包括:
    所述终端设备接收网络设备发送的广播消息,所述广播消息中携带候选的所述多个载波的CBR。
  59. 根据权利要求53至56中任一项所述的方法,其特征在于,所述方法由网络设备执行,所述获取候选的多个载波的CBR,包括:
    所述网络设备接收终端设备上报的所述多个载波的CBR。
  60. 根据权利要求53至59中任一项所述的方法,其特征在于,所述载波选取的过程,与资源保持概率ProbResourceKeep参数不相关。
  61. 根据权利要求53至60中任一项所述的方法,其特征在于,所述多个载波中每个载波的CBR,为终端设备在所述每个载波上使用的资源池的CBR。
  62. 根据权利要求61所述的方法,其特征在于,所述终端设备在所述每个载波上使用的资源池,为多个资源池中与所述终端所处的区域对应的资源池,其中,所述多个资源池与多个区域之间存在对应关系。
  63. 一种载波选取的方法,其特征在于,所述方法包括:
    获取候选的多个载波的信道占用比率CBR;
    当终端设备的位置由第一区域移动至第二区域时,根据所述多个载波的CBR,在所述多个载波中进行载波选取。
  64. 根据权利要求63所述的方法,其特征在于,所述当终端设备的位置由第一区域移动至第二区域时,根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    当终端设备的位置由第一区域移动至第二区域时,确定第一载波的CBR与第二载波的CBR之间的差值,是否超过第一阈值,其中,所述第一载波为当前数据传输所使用的载波,所述第二载波为所述多个载波中除所述第一载波之外的任一载波;
    若所述第一载波的CBR,与所述第二载波的CBR之间的差值,超过所述第一阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取。
  65. 根据权利要求64所述的方法,其特征在于,所述若所述第一载波的CBR,与所述第二载波的CBR之间的差值,超过所述第一阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    若所述第一载波的CBR,与所述第二载波的CBR之间的差值,超过所述第一阈值,则根据所述多个载波的CBR,在CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
  66. 根据权利要求64所述的方法,其特征在于,所述若所述第一载波的CBR与所述第二载波的CBR之间的差值,超过第一阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    若所述第一载波的CBR与所述第二载波的CBR之间的差值,超过所述第一阈值且持续预设时长,则根据所述多个载波的CBR,在所述多个载波中进行载波选取。
  67. 根据权利要求66所述的方法,其特征在于,所述若所述第一载波的CBR与所述第二载波的CBR之间的差值,超过所述第一阈值且持续预设时长,则根据所述多个载波的CBR,在所述多个载波中进行载波选,包括:
    若所述第一载波的CBR,与所述第二载波的CBR之间的差值,超过所述第一阈值且持续预设时长,则根据所述多个载波的CBR,在CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
  68. 根据权利要求64所述的方法,其特征在于,所述若所述第一载波的CBR与所述第二载波的CBR之间的差值,超过第一阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    若所述第一载波的CBR与所述第二载波的CBR之间的差值,超过所述第一阈值,且所述第一载波的CBR大于第二阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取。
  69. 根据权利要求68所述的方法,其特征在于,所述若所述第一载波的CBR,与所述第二载波的CBR之间的差值,超过所述第一阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    若所述第一载波的CBR,与所述第二载波的CBR之间的差值,超过所述第一阈值,且所述第一载波的CBR小于或等于第二阈值,则选取所述第一载波作为待使用的载波;或者
    若所述第一载波的CBR,与所述第二载波的CBR之间的差值,超过所述第一阈值,且所述第一载波的CBR小于或等于第二阈值,则在CBR小于或等于所述第二阈值的载波中进行载波选取。
  70. 根据权利要求63所述的方法,其特征在于,所述方法还包括:
    当终端设备的位置由第一区域移动至第二区域时,确定第一载波的CBR与第二载波的CBR之间的差值,是否超过第一阈值,其中,所述第一载波为当前数据传输所使用的载波,所述第二载波为所述多个载波中除所述第一载波之外的任一载波;
    若所述第一载波的CBR,与所述第二载波的CBR之间的差值,未超过所述第一阈值,则选取所述第一载波作为待使用的载波;或者
    若所述第一载波的CBR,与所述第二载波的CBR之间的差值,未超过所述第一阈值,则在所述多个载波中选择任意一个载波作为待使用的载波;或者
    若所述第一载波的CBR,与所述第二载波的CBR之间的差值,未超过所述第一阈值,则在所述多个载波中选择CBR最小的载波作为待使用的载波。
  71. 根据权利要求63至70中任一项所述的方法,其特征在于,所述方法由终端设备执行,在所述确定第一载波的CBR,与的第二载波的CBR之间的差值,是否超过第一阈值之前,所述方法还包括:
    所述终端设备获取预配置在所述终端设备中的所述第一阈值;或者
    所述终端设备接收网络设备发送的配置信息,所述配置信息包括所述第一阈值。
  72. 根据权利要求63至70中任一项所述的方法,其特征在于,所述方法由网络设备执行,所述方法还包括:
    所述网络设备向终端设备发送配置信息,所述配置信息包括所述第一阈值。
  73. 根据权利要求63至72中任一项所述的方法,其特征在于,所述根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    根据所述多个载波的CBR,在所述多个载波中选择CBR最小的载波作为待使用的载波。
  74. 根据权利要求63所述的方法,其特征在于,在所述根据所述多个载波的CBR,在所述多个载波中进行载波选取之前,所述方法还包括:
    对所述多个载波的CBR进行滤波处理,以获得滤波后的所述多个载波的CBR;
    其中,所述当终端设备的位置由第一区域移动至第二区域时,根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    当终端设备的位置由第一区域移动至第二区域时,根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取。
  75. 根据权利要求74所述的方法,其特征在于,所述对所述多个载波的CBR进行滤波处理,包括:
    对所述多个载波的CBR进行平滑滤波。
  76. 根据权利要求75所述的方法,其特征在于,进行所述平滑滤波后的所述多个载波中每个载波的CBR为:
    CBR_new=a×CBR_old+(1-a)×CBR_current,
    其中,CBR_new为滤波后所述每个载波的CBR,CBR_current为滤波前所述每个载波的CBR,CBR_old为上一次载波选取时滤波后的所述每个载波的CBR,a为滤波系数且0≤a≤1。
  77. 根据权利要求63所述的方法,其特征在于,在所述根据所述多个载波的CBR,在所述多个载波中进行载波选取之前,所述方法还包括:
    对所述多个载波的CBR进行滤波处理,以获得滤波后的所述多个载波的CBR;
    其中,所述当终端设备的位置由第一区域移动至第二区域时,根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    当所述终端设备的位置由所述第一区域移动至所述第二区域时,确定滤波后的第一载波的CBR,与滤波后的第二载波的CBR之间的差值,是否超过第一阈值,其中,所述第一载波为当前数据传输所使用的载波,所述第二载波为所述多个载波中除所述第一载波之外的任一载波;
    若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取。
  78. 根据权利要求77所述的方法,其特征在于,所述若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在滤波后CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
  79. 根据权利要求77或78所述的方法,其特征在于,所述对所述多个载波的CBR进行滤波处理,包括:
    对所述多个载波的CBR进行平滑滤波。
  80. 根据权利要求79所述的方法,其特征在于,进行所述平滑滤波后的所述多个载波中每个载波的CBR为:
    CBR_new=a×CBR_old+(1-a)×CBR_current,
    其中,CBR_new为滤波后所述每个载波的CBR,CBR_current为滤波前所述每个载波的CBR,CBR_old为上一次载波选取时滤波后的所述每个载波的CBR,a为滤波系数且0≤a≤1。
  81. 根据权利要求77至80中任一项所述的方法,其特征在于,所述若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值且持续预设时长,则根据所述多个载波的CBR,在所述多个载波中进行载波选取。
  82. 根据权利要求81所述的方法,其特征在于,所述若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值且持续预设时长,则根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值且持续预设时长,则根据滤波后的所述多个载波的CBR,在滤波后CBR与第一载波的CBR之差超过第一阈值的载波中,选择一个载波作为待使用的载波。
  83. 根据权利要求77至80中任一项所述的方法,其特征在于,所述若滤波后的所述第一载波的CBR与滤波后的所述第二载波的CBR之间的差值,超过第一阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    若滤波后的所述第一载波的CBR与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,且滤波后的所述第一载波的CBR大于第二阈值,则根据所述多个载波的CBR,在所述多个载波中进行载波选取。
  84. 根据权利要求83所述的方法,其特征在于,所述若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,则根据滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,且滤波后的所述第一载波的CBR小于或等于第二阈值,则选取所述第一载波作为待使用的载波;或者
    若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,超过所述第一阈值,且滤波后的所述第一载波的CBR小于或等于第二阈值,则在滤波后CBR小于或等于所述第二阈值的载波中进行载波选取。
  85. 根据权利要求63所述的方法,其特征在于,在所述根据所述多个载波的CBR,在所述多个载波中进行载波选取之前,所述方法还包括:
    对所述多个载波的CBR进行滤波处理,以获得滤波后的所述多个载波的CBR;
    其中,所述当终端设备的位置由第一区域移动至第二区域时,根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    当所述终端设备的位置由所述第一区域移动至所述第二区域时,确定滤波后的第一载波的CBR,与滤波后的第二载波的CBR之间的差值,是否超过第一阈值,其中,所述第一载波为当前数据传输所使用的载波,所述第二载波为所述多个载波中除所述第一载波之外的任一载波;
    若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,未超过所述第一阈值,则选取所述第一载波作为待使用的载波;或者
    若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,未超过所述第一阈值,则在所述多个载波中选择任意一个载波作为待使用的载波;或者
    若滤波后的所述第一载波的CBR,与滤波后的所述第二载波的CBR之间的差值,未超过所述第一阈值,则在所述多个载波中选择滤波后CBR最小的载波作为待使用的载波。
  86. 根据权利要求77至85中任一项所述的方法,其特征在于,所述根据所述多个载波的CBR,在所述多个载波中进行载波选取,包括:
    根据滤波后的所述多个载波的CBR,在所述多个载波中选择滤波后CBR最小的载波作为待使用的载波。
  87. 根据权利要求63至86中任一项所述的方法,其特征在于,所述方法由终端设备执行,所述获取候选的多个载波的CBR,包括:
    所述终端设备对所述多个载波的CBR进行测量,以获得所述多个载波的CBR。
  88. 根据权利要求63至86中任一项所述的方法,其特征在于,所述方法由终端设备执行,所述获取候选的多个载波的CBR,包括:
    所述终端设备接收网络设备发送的广播消息,所述广播消息中携带候选的所述多个载波的CBR。
  89. 根据权利要求63至86中任一项所述的方法,其特征在于,所述方法由网络设备执行,所述获取候选的多个载波的CBR,包括:
    所述网络设备接收终端设备上报的所述多个载波的CBR。
  90. 根据权利要求63至89中任一项所述的方法,其特征在于,所述多个载波中每个载波的CBR,为终端设备在所述每个载波上使用的资源池的CBR。
  91. 根据权利要求90所述的方法,其特征在于,所述终端设备在所述每个载波上使用的资源池,为多个资源池中与所述终端所处的区域对应的资源池,其中,所述多个资源池与多个区域之间存在对应关系。
  92. 一种通信设备,其特征在于,所述通信设备包括:
    获取单元,用于获取候选的多个载波的信道占用比率CBR;
    滤波单元,用于对所述获取单元获取的所述多个载波的CBR进行滤波处理,以获得滤波后的所述多个载波的CBR;
    载波选取单元,用于根据所述滤波单元滤波后的所述多个载波的CBR,在所述多个载波中进行载波选取。
  93. 一种通信设备,其特征在于,所述通信设备包括:
    获取单元,用于获取候选的多个载波的信道占用比率CBR;
    确定单元,用于确定第一载波的CBR与第二载波的CBR之间的差值,是否超过第一阈值,其中,所述第一载波为当前数据传输所使用的载波,所述第二载波为所述多个载波中除所述第一载波之外的任一载波;
    载波选取单元,用于在所述第一载波的CBR与所述第二载波的CBR之间的差值,超过第一阈值时,则根据所述获取单元获取的所述多个载波的CBR,在所述多个载波中进行载波选取。
  94. 一种通信设备,其特征在于,所述通信设备包括:
    获取单元,用于获取候选的多个载波的信道占用比率CBR;
    载波选取单元,用于在资源重选计数器C_resel的值等于0时,根据所述获取单元获取的所述多个载波的CBR,在所述多个载波中进行载波选取。
  95. 一种通信设备,其特征在于,所述通信设备包括:
    获取单元,用于获取候选的多个载波的信道占用比率CBR;
    载波选取单元,用于在终端设备的位置由第一区域移动至第二区域时,根据所述获取单元获取的所述多个载波的CBR,在所述多个载波中进行载波选取。
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