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WO2025000286A1 - 资源确定方法、信号接收方法、终端及通信系统 - Google Patents

资源确定方法、信号接收方法、终端及通信系统 Download PDF

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Publication number
WO2025000286A1
WO2025000286A1 PCT/CN2023/103381 CN2023103381W WO2025000286A1 WO 2025000286 A1 WO2025000286 A1 WO 2025000286A1 CN 2023103381 W CN2023103381 W CN 2023103381W WO 2025000286 A1 WO2025000286 A1 WO 2025000286A1
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WO
WIPO (PCT)
Prior art keywords
resources
prs
time slot
consecutive symbols
candidate
Prior art date
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PCT/CN2023/103381
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English (en)
French (fr)
Inventor
赵群
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.)
Beijing Xiaomi Mobile Software Co Ltd
Original Assignee
Beijing Xiaomi Mobile Software Co 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 Beijing Xiaomi Mobile Software Co Ltd filed Critical Beijing Xiaomi Mobile Software Co Ltd
Priority to PCT/CN2023/103381 priority Critical patent/WO2025000286A1/zh
Priority to CN202380009819.1A priority patent/CN117121431A/zh
Publication of WO2025000286A1 publication Critical patent/WO2025000286A1/zh
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management

Definitions

  • the present disclosure relates to the field of communication technology, and in particular to a resource determination method, a signal receiving method, a terminal and a communication system.
  • sidelink positioning is based on the sidelink (SL) between terminal devices to achieve the positioning of terminal devices.
  • SL sidelink
  • positioning based on the sidelink can include absolute positioning, relative positioning, and ranging. Therefore, the terminal device needs to select resources for sending a sidelink positioning reference signal (SL-PRS) to achieve the purpose of positioning on the through link.
  • S-PRS sidelink positioning reference signal
  • the embodiments of the present disclosure provide a resource determination method, a signal receiving method, a terminal and a communication system to provide a method for selecting resources for sending SL-PRS.
  • an embodiment of the present disclosure provides a method for determining resources, the method comprising:
  • available resources and/or unavailable resources among candidate resources for sending the SL-PRS are determined.
  • an embodiment of the present disclosure further provides a signal receiving method, the method comprising:
  • the SL-PRS is sent by the transmitting end after determining the number of consecutive symbols occupied by sending the SL-PRS and determining the available resources and/or unavailable resources among the candidate resources for sending the SL-PRS based on the number of consecutive symbols, and then selecting the corresponding available resources.
  • an embodiment of the present disclosure further provides a terminal, the terminal comprising:
  • a symbol determination module used to determine the number of consecutive symbols occupied by the sending side link positioning reference signal SL-PRS;
  • a resource determination module configured to determine available resources and/or unavailable resources among candidate resources for sending the SL-PRS according to the number of consecutive symbols
  • an embodiment of the present disclosure further provides a terminal, the terminal comprising:
  • a receiving module used to receive a side link positioning reference signal SL-PRS sent by a transmitting end
  • the SL-PRS is sent by the transmitting end after determining the number of consecutive symbols occupied by sending the SL-PRS and determining the available resources and/or unavailable resources among the candidate resources for sending the SL-PRS based on the number of consecutive symbols, and then selecting the corresponding available resources.
  • an embodiment of the present disclosure further provides a terminal, including:
  • processors one or more processors
  • the terminal is used to execute the resource determination method described in the embodiment of the present disclosure.
  • an embodiment of the present disclosure further provides a terminal, including:
  • processors one or more processors
  • the terminal is used to execute the signal receiving method described in the embodiment of the present disclosure.
  • the embodiment of the present disclosure also provides a communication system, including a first terminal and a second terminal; wherein the first terminal is configured to implement the resource determination method described in the embodiment of the present disclosure, and the second terminal is configured to implement the signal receiving method described in the embodiment of the present disclosure.
  • the embodiment of the present disclosure also provides a storage medium storing instructions, which, when executed on a communication device, enables the communication device to execute the resource determination method described in the embodiment of the present disclosure, or execute the signal receiving method described in the embodiment of the present disclosure.
  • the number of consecutive symbols occupied by the sending side link positioning reference signal SL-PRS is determined, and based on the number of consecutive symbols, the available resources and/or unavailable resources among the candidate resources for sending the SL-PRS are determined, so that the resource coverage rate that can be used to send the SL-PRS is higher, and the SL-PRS can be sent even in a shared resource pool configured with PSFCH, thereby improving the positioning performance, and at the same time does not affect the feedback performance of HARQ-ACK using PSFCH.
  • FIG1 is an exemplary schematic diagram of the architecture of a communication system provided according to an embodiment of the present disclosure
  • FIG2 is an exemplary interaction diagram of a method provided according to an embodiment of the present disclosure.
  • FIG3 is one of the exemplary schematic diagrams of a method provided according to an embodiment of the present disclosure.
  • FIG4 is a second schematic diagram of an example of a method provided according to an embodiment of the present disclosure.
  • FIG5 is a third exemplary schematic diagram of a method provided according to an embodiment of the present disclosure.
  • FIG6 is a fourth exemplary schematic diagram of a method provided according to an embodiment of the present disclosure.
  • FIG7 is a fifth exemplary schematic diagram of a method provided according to an embodiment of the present disclosure.
  • FIG8 is a sixth exemplary schematic diagram of a method provided according to an embodiment of the present disclosure.
  • FIG9 is a schematic diagram of a flow chart of a resource determination method according to an embodiment of the present disclosure.
  • FIG10 is a schematic diagram of a flow chart of a signal receiving method according to an embodiment of the present disclosure.
  • FIG11 is a schematic diagram of a structure of a terminal according to an embodiment of the present disclosure.
  • FIG12 is a second schematic diagram of the structure of the terminal proposed in the embodiment of the present disclosure.
  • FIG13A is a third schematic diagram of the structure of a terminal proposed in an embodiment of the present disclosure.
  • FIG. 13B is a schematic diagram of the structure of the chip proposed in the embodiment of the present disclosure.
  • the embodiments of the present disclosure provide a resource determination method, a signal receiving method, a terminal, and a communication system.
  • an embodiment of the present disclosure provides a resource determination method, the method comprising:
  • available resources and/or unavailable resources among candidate resources for sending the SL-PRS are determined.
  • the number of consecutive symbols occupied by the sending side link positioning reference signal SL-PRS is determined, and the available resources and/or unavailable resources in the candidate resources for sending the SL-PRS are determined according to the number of consecutive symbols.
  • resource reselection based on available resources and/or unavailable resources exclusion based on unavailable resources can be performed, so that the resource coverage rate of the candidate resources that can be used to send SL-PRS is higher; even in a shared resource pool configured with PSFCH, SL-PRS can be sent, thereby improving positioning performance, and at the same time, it does not affect the feedback performance of Hybrid Automatic Repeat ReQuest (HARQ)-ACK using PSFCH.
  • HARQ Hybrid Automatic Repeat ReQuest
  • determining, according to the number of consecutive symbols, available resources or unavailable resources in the candidate resources for sending the SL-PRS includes at least one of the following:
  • Unavailable resources of the candidate resources are determined according to the number of consecutive symbols.
  • the available resources in the resource pool are determined according to the number of consecutive symbols to facilitate the subsequent sending of SL-PRS in the available resources; alternatively, the unavailable resources in the resource pool can be determined according to the number of consecutive symbols, and the available resources can be determined by excluding the unavailable resources to achieve the sending of SL-PRS in the available resources, thereby avoiding the failure of SL-PRS sending.
  • the available resources include at least one of the following:
  • the first time slot includes: a time slot that does not include a physical side link feedback channel PSFCH; the second time slot includes: a time slot that includes PSFCH;
  • the unavailable resources include at least one of the following:
  • the first time slot that does not satisfy the first condition and the second time slot that does not satisfy the first condition.
  • resource reselection can be performed based on available resource rows to select a first time slot that meets the first condition and/or a second time slot that meets the first condition; or unavailable resources can be excluded based on unavailable resources, for example, the first time slot that does not meet the first condition and the second time slot that does not meet the first condition are excluded; in this way, the resource coverage rate that can be used to send SL-PRS in the candidate resources is higher.
  • the first condition includes:
  • the first symbols can be used to send the PSSCH, and the first symbols do not include a demodulation reference signal DMRS symbol.
  • SCI may include first-order SCI (1st SCI) and second-order SCI (2nd-CSI).
  • 1st SCI can be carried by PSCCH, and may include at least one of the following messages: priority indication information, PSSCH time-frequency resource indication information and modulation and coding scheme (MCS) indication information, etc.
  • 2nd-CSI represents second-order SCI, which specifically uses PSSCH resources or part of the resources, and may include, for example, at least one of the following messages: layer 1 source ID, destination ID, HARQ process indication information, PSFCH resource indication information, etc.
  • the terminal before decoding the data, the terminal needs to decode the 2nd SCI to obtain key information such as the terminal ID, HARQ process ID, redundancy version, cast type, etc., which are used to decode the subsequent PSSCH data.
  • the terminal needs to decode the 2nd SCI before obtaining the symbol occupied by the SL-PRS, so as to decode the SL-PRS; therefore, the SL-PRS can only be sent after the symbol at the end of the second-order SCI.
  • the time slot meets the first condition and can be used as a resource for sending SL-PRS to ensure the normal operation of SCI and the normal transmission of DMRS.
  • the first condition further includes:
  • the number of second symbols that can be used to send the PSSCH is greater than or equal to a preset value.
  • the remaining number of symbols for sending PSSCH is greater than or equal to a preset value.
  • the preset value can be set as the minimum number of symbols for sending PSSCH to ensure that PSSCH can still be transmitted normally.
  • the SL-PRS is sent periodically, and a time slot corresponding to a part of the period includes the PSFCH;
  • resource reselection is performed to select a first time slot satisfying a first condition and/or a second time slot satisfying the first condition to send the SL-PRS.
  • a muting operation can be performed on the SL-PRS in the time slot corresponding to the period including the PSFCH.
  • the muting operation is to not send the SL-PRS to avoid the possibility that the SL-PRS cannot be sent in the time slot corresponding to the period including the PSFCH.
  • resource reselection can be performed in the time slot corresponding to the period including the PSFCH, and the first time slot that meets the first condition and/or the second time slot that meets the first condition can be selected to send the SL-PRS, or the time slot corresponding to the period not including the PSFCH can be directly selected to perform Sidelink transmission of the current period to realize the transmission of the SL-PRS.
  • determining the available resources in the candidate resources according to the number of consecutive symbols includes:
  • the number of consecutive symbols satisfies the second condition, and determining the available resources includes at least one of the following:
  • the number of consecutive symbols of the SL-PRS sent by the available resources corresponding to the first time slot is a first value
  • the number of consecutive symbols of the SL-PRS sent by the available resources corresponding to the second time slot is a second value: the second value is less than or equal to the first value;
  • the SL-PRS sent periodically includes a third value in which the number of consecutive symbols of the SL-PRS sent by the available resources corresponding to the period of the PSFCH is less than or equal to the second value.
  • the number of consecutive symbols sent can be adjusted, for example, the number of consecutive symbols can be reduced so that more resources can be used to send SL-PRS to improve resource utilization.
  • the second condition includes at least one of the following:
  • the number of consecutive symbols is not preconfigured in the resource pool
  • the number of consecutive symbols is preconfigured with at least two values in the resource pool;
  • the priority of the transmitted service is lower than the priority threshold.
  • the number of consecutive symbols actually sent is adjusted during subsequent sending; for example, the number of consecutive symbols is reduced so that more resources can be used to send SL-PRS to improve resource utilization.
  • determining, according to the number of consecutive symbols, available resources and/or unavailable resources in the candidate resources for sending the SL-PRS includes at least one of the following:
  • the physical layer function entity excludes the unavailable resources and forms a first candidate resource set, and sends the first candidate resource set to the MAC layer;
  • the MAC layer functional entity selects the available resources in the second candidate resource set reported by the physical layer.
  • the physical layer functional entity after the physical layer functional entity excludes all unavailable resources, it updates the candidate resource set SA to form a first candidate resource set (i.e., the updated SA), and reports the first candidate resource set to the MAC layer.
  • the MAC layer functional entity selects the available resources from one or more second candidate resource sets reported by the physical layer for the PSCCH/PSSCH transmission of the Sidelink; wherein the second candidate resource set may be after the physical layer functional entity performs resource exclusion, or may not perform resource exclusion.
  • the physical layer function entity excludes the unavailable resources and forms a first candidate resource set, including:
  • the physical layer function entity excludes the unavailable resources and the target resources when initializing the candidate resources in the selection window, and forms a first candidate resource set;
  • the physical layer functional entity initializes the candidate resources in the selection window and excludes the target resources to form a third candidate resource set; excludes unavailable resources in the third candidate resource set to form a first candidate resource set;
  • the target resource includes at least one of the following:
  • the resources corresponding to the time slots that are not monitored overlap with the resources reserved by other UEs and whose reference signal received power RSRP is greater than a preset RSRP threshold.
  • the physical layer functional entity may exclude unavailable resources during initialization or after initialization; by excluding unavailable resources, the selection range of available resources is narrowed, thereby improving the efficiency of resource selection.
  • the method further includes:
  • the SL-PRS is sent to a receiving end within available resources among the candidate resources.
  • the candidate resources after the physical layer eliminates unavailable resources and/or the MAC layer reselects resources have a higher resource coverage rate for sending SL-PRS.
  • SL-PRS can be sent, thereby improving the positioning performance without affecting the feedback performance of Hybrid Automatic Repeat ReQuest (HARQ)-ACK using PSFCH.
  • HARQ Hybrid Automatic Repeat ReQuest
  • an embodiment of the present disclosure provides a signal receiving method, the method comprising:
  • the SL-PRS is sent by the transmitting end after determining the number of consecutive symbols occupied by sending the SL-PRS and determining the available resources and/or unavailable resources among the candidate resources for sending the SL-PRS based on the number of consecutive symbols, and then selecting the corresponding available resources.
  • the SL-PRS is sent by the transmitting end after determining the number of consecutive symbols occupied by sending the SL-PRS, and determining the available resources and/or unavailable resources in the candidate resources for sending the SL-PRS based on the number of consecutive symbols.
  • resource reselection based on available resources and/or unavailable resources exclusion based on unavailable resources can be performed, so that the resource coverage rate of the candidate resources that can be used to send the SL-PRS is higher; even in a shared resource pool configured with PSFCH, SL-PRS can be sent, thereby improving positioning performance, while not affecting the feedback performance of HARQ-ACK using PSFCH.
  • the receiving the SL-PRS sent by the transmitting end includes:
  • the SL-PRS is received in available resources among the candidate resources; the available resources include resources among the candidate resources except the unavailable resources.
  • the available resources include at least one of the following:
  • the first time slot includes: a time slot that does not include a physical side link feedback channel PSFCH; the second time slot includes: a time slot that includes PSFCH;
  • the unavailable resources include at least one of the following:
  • the first time slot that does not satisfy the first condition and the second time slot that does not satisfy the first condition.
  • the first condition includes:
  • the first symbols can be used to send the PSSCH, and the first symbols do not include a demodulation reference signal DMRS symbol.
  • the first condition further includes:
  • the number of second symbols that can be used to send the PSSCH is greater than or equal to a preset value.
  • the number of consecutive symbols satisfies the second condition, and the available resources include at least one of the following:
  • the number of consecutive symbols of the SL-PRS sent by the available resources corresponding to the first time slot is a first value
  • the number of consecutive symbols of the SL-PRS sent by the available resources corresponding to the second time slot is a second value: the second value is less than or equal to the first value;
  • the SL-PRS sent periodically includes a third value in which the number of consecutive symbols of the SL-PRS sent by the available resources corresponding to the period of the PSFCH is less than or equal to the second value.
  • the second condition includes at least one of the following:
  • the number of consecutive symbols is not preconfigured in the resource pool
  • the number of consecutive symbols is preconfigured with at least two values in the resource pool;
  • the priority of the transmitted service is lower than the priority threshold.
  • an embodiment of the present disclosure further provides a terminal, comprising at least one of a symbol determination module and a resource determination module; wherein the terminal is used to execute an optional implementation method of the first aspect.
  • an embodiment of the present disclosure further provides a terminal, comprising: a receiving module; wherein the terminal is used to execute the optional implementation method of the second aspect.
  • an embodiment of the present disclosure further provides a terminal, including:
  • processors one or more processors
  • the terminal is used to execute the optional implementation of the first aspect.
  • an embodiment of the present disclosure further provides a terminal, including:
  • processors one or more processors
  • the terminal is used to execute the optional implementation of the second aspect.
  • an embodiment of the present disclosure further provides a communication system, comprising a first terminal and a second terminal; wherein the first terminal is configured to execute the optional implementation method as described in the first aspect, and the second terminal is configured as the optional implementation method as described in the second aspect.
  • an embodiment of the present disclosure further provides a storage medium storing instructions, which, when executed on a communication device, enables the communication device to execute the optional implementation methods described in the first and second aspects.
  • the present disclosure provides a program product, which, when executed by a communication device, enables the communication device to
  • the device is equipped with a plurality of devices and is provided with a plurality of devices.
  • the plurality of devices are equipped with a plurality of devices and is provided with a plurality of devices.
  • an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method described in the optional implementation of the first aspect and the second aspect.
  • an embodiment of the present disclosure provides a chip or a chip system, wherein the chip or the chip system includes a processing circuit configured to execute the method described in the optional implementation of the first aspect and the second aspect.
  • the first terminal, the second terminal communication system, the storage medium, the program product, the computer program, the chip or the chip system are all used to execute the method proposed in the embodiment of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding method, which will not be repeated here.
  • the embodiments of the present disclosure propose a resource determination method, a signal receiving method, a terminal and a communication system.
  • the terms such as resource determination method, resource selection method, resource determination method, etc. can be replaced with each other
  • the terms such as signal receiving method, signal processing method, resource determination method, etc. can be replaced with each other
  • the terms such as information processing system, communication system, etc. can be replaced with each other.
  • each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined.
  • a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged.
  • the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined, for example, some or all of the steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.
  • elements expressed in the singular form such as “a”, “an”, “the”, “above”, “said”, “aforementioned”, “this”, etc., may mean “one and only one", or “one or more”, “at least one”, etc.
  • the noun after the article may be understood as a singular expression or a plural expression.
  • plurality refers to two or more.
  • the terms "at least one of”, “one or more”, “a plurality of”, “multiple”, etc. can be used interchangeably.
  • "at least one of A and B", “A and/or B", “A in one case, B in another case”, “in response to one case A, in response to another case B”, etc. may include the following technical solutions according to the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, A and B (both A and B are executed). When there are more branches such as A, B, C, etc., the above is also similar.
  • the recording method of "A or B” may include the following technical solutions according to the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed).
  • A A is executed independently of B
  • B B is executed independently of A
  • execution is selected from A and B (A and B are selectively executed).
  • prefixes such as “first” and “second” in the embodiments of the present disclosure are only used to distinguish different description objects, and do not constitute restrictions on the position, order, priority, quantity or content of the description objects.
  • the statement of the description object refers to the description in the context of the claims or embodiments, and should not constitute unnecessary restrictions due to the use of prefixes.
  • the description object is a "field”
  • the ordinal number before the "field” in the "first field” and the "second field” does not limit the position or order between the "fields”
  • the "first” and “second” do not limit whether the "fields” they modify are in the same message, nor do they limit the order of the "first field” and the "second field”.
  • the description object is a "level”
  • the ordinal number before the "level” in the “first level” and the “second level” does not limit the priority between the "levels”.
  • the number of description objects is not limited by the ordinal number, and can be one or more. Taking the "first device” as an example, the number of "devices” can be one or more.
  • the objects modified by different prefixes may be the same or different. For example, if the description object is "device”, then the “first device” and the “second device” may be the same device or different devices, and their types may be the same or different. For another example, if the description object is "information”, then the "first information” and the “second information” may be the same information or different information, and their contents may be the same or different.
  • “including A”, “comprising A”, “used to indicate A”, and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.
  • terms such as “greater than”, “greater than or equal to”, “not less than”, “more than”, “more than or equal to”, “not less than”, “higher than”, “higher than or equal to”, “not lower than”, and “above” can be replaced with each other, and terms such as “less than”, “less than or equal to”, “not greater than”, “less than”, “less than or equal to”, “no more than”, “lower than”, “lower than or equal to”, “not higher than”, and “below” can be replaced with each other.
  • devices and equipment may be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they may also be understood as “equipment”, “device”, “circuit”, “network element”, “node”, “function”, “unit”, “section”, “system”, “network”, “chip”, “chip system”, “entity”, “subject”, etc.
  • network can be interpreted as devices included in the network, such as access network equipment, core network equipment, etc.
  • access network device may also be referred to as “radio access network device (RAN device)", “base station (BS)”, “radio base station (radio base station)”, “fixed station” and in some embodiments may also be understood as “node”, “access point (access point)”, “transmission point (TP)”, “reception point (RP)”, “transmission and/or reception point (transmission/reception point, TRP)", “panel”, “antenna panel”, “antenna array”, “cell”, “macro cell”, “small cell”, “femto cell”, “pico cell”, “sector”, “cell group”, “serving cell”, “carrier”, “component carrier”, “bandwidth part (bandwidth part, BWP)", etc.
  • RAN device radio access network device
  • base station base station
  • RP radio base station
  • TRP transmission and/or reception point
  • terminal or “terminal device” may be referred to as "user equipment (UE)", “user terminal (user terminal)”, “mobile station (MS)”, “mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc.
  • UE user equipment
  • MS mobile station
  • MT mobile terminal
  • acquisition of data, information, etc. may comply with the laws and regulations of the country where the data is obtained.
  • data, information, etc. may be obtained with the user's consent.
  • each element, each row, or each column in the table of the embodiments of the present disclosure may be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns may also be implemented as an independent embodiment.
  • FIG1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure.
  • a communication system 100 includes a first terminal 101 and a second terminal 102 .
  • the first terminal 101 and the second terminal 102 include, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid (smart grid), a wireless terminal device in transportation safety (transportation safety), a wireless terminal device in a smart city (smart city), and at least one of a wireless terminal device in a smart home (smart home), but are not limited to these.
  • a mobile phone a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR)
  • the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure.
  • a person of ordinary skill in the art can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.
  • the following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1 , or part of the subject, but are not limited thereto.
  • the subjects shown in FIG1 are examples, and the communication system may include all or part of the subjects in FIG1 , or may include other subjects other than FIG1 , and the number and form of the subjects are arbitrary, and the subjects may be physical or virtual, and the connection relationship between the subjects is an example, and the subjects may be connected or disconnected, and the connection may be in any manner, and may be a direct connection or an indirect connection, and may be a wired connection or a wireless connection.
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • LTE-B LTE-Beyond
  • SUPER 3G IMT-Advanced
  • 4G fourth generation mobile communication system
  • 5G fifth generation mobile communication system
  • 5G new radio NR
  • FAA future radio access
  • WRT new wireless access technology
  • New-Radio Access Technology RAT
  • New Radio NR
  • New radio access NX
  • Future generation radio access FX
  • GSM Global System for Mobile communications
  • CDMA2000 Ultra Mobile Broadband
  • UMB Ultra Mobile Broadband
  • IEEE 802.11 Wi-Fi (registered trademark)
  • IEEE 802.16 WiMAX (registered trademark)
  • IEEE 802.20 Ultra-WideBand (UWB)
  • Bluetooth registered trademark
  • PLMN Public Land Mobile Network
  • PLMN Public Land Mobile Network
  • D2D Device-to-Device
  • M2M Machine to Machine
  • IoT Internet of Things
  • V2X Vehicle-to-Everything
  • systems using other resource determination methods and next-generation systems extended based on them, etc.
  • multiple systems can also be combined (for example, a combination of LTE or LTE-A and 5G, etc.) for application.
  • FIG2 is an interactive schematic diagram of a resource determination method and a signal receiving method according to an embodiment of the present disclosure. As shown in FIG2 , the method includes:
  • Step 201 The first terminal 101 determines the number of consecutive symbols occupied by sending a side link positioning reference signal SL-PRS.
  • the first terminal is, for example, a transmitter of SL-PRS.
  • PRS positioning reference signal
  • SL-PRS positioning reference signal
  • it can share a resource pool with the sidelink communication (or sidelink data); it can be understood that the shared resource pool is, for example, a shared resource pool.
  • the resource pool includes a time domain resource set and a frequency domain resource set for sending during sidelink communication.
  • the sidelink data and SL-PRS are sent in the same time slot, such as the physical sidelink shared channel (physical sidelink control channel, PSSCH).
  • PSSCH physical sidelink control channel
  • Comb size 1 For the resource pool shared by the sidelink communication and the SL-PRS, the following candidate resource combinations can be supported: Comb size 1, where (M, N) includes (1, 2), (2, 2), (2, 4), (4, 4); and patterns supporting comb size 1, comb size 2, comb size 4, and M>N; where N represents the comb tooth size, and M represents the number of symbols occupied by the SL-PRS.
  • FIG3 shows a schematic diagram of the pattern of Comb size (2, 2) and Comb size (4, 4).
  • the first terminal 101 determines the number of consecutive symbols occupied by sending (i.e., transmitting) the SL-PRS, and the number of consecutive symbols is, for example, the aforementioned M.
  • the occupied symbols are usually continuous, and the SL-PRS is usually not sent using the same symbol as a demodulation reference signal (DMRS).
  • DMRS demodulation reference signal
  • Step 202 The first terminal 101 determines available resources and/or unavailable resources among candidate resources for sending the SL-PRS according to the number of consecutive symbols.
  • available resources are candidate resources in the resource pool that can send SL-PRS
  • unavailable resources are resources that cannot be used to send SL-PRS. This facilitates the subsequent exclusion of unavailable resources and/or reselection of available resources, so that the resource coverage rate of candidate resources that can be used to send SL-PRS is higher.
  • SL-PRS can be sent, thereby improving positioning performance without affecting the feedback performance of Hybrid Automatic Repeat ReQuest (HARQ)-ACK using PSFCH.
  • HARQ Hybrid Automatic Repeat ReQuest
  • determining, according to the number of consecutive symbols, available resources or unavailable resources among candidate resources for sending the SL-PRS includes at least one of the following:
  • Step 2021 determining available resources among the candidate resources according to the number of consecutive symbols
  • Step 2022 Determine unavailable resources of the candidate resources according to the number of consecutive symbols.
  • the first terminal 101 determines the available resources in the resource pool according to the number of consecutive symbols to facilitate the subsequent sending of SL-PRS in the available resources; alternatively, the first terminal 101 may also determine the unavailable resources in the resource pool according to the number of consecutive symbols, and determine the available resources by excluding the unavailable resources, so as to send the SL-PRS in the available resources and avoid the failure of SL-PRS sending.
  • the available resources include at least one of the following:
  • the first time slot includes: a time slot that does not include a physical side link feedback channel PSFCH; the second time slot includes: a time slot that includes PSFCH.
  • the first condition can be pre-set, that is, a "first preset condition”.
  • the first time slot which does not contain PSFCH
  • the second time slot containing PSFCH it may not be possible to send SL-PRS with a corresponding length of M, because if PSFCH is sent, it is necessary to additionally occupy: a guard period (GP) symbol, an automatic gain control (AGC) symbol, and another symbol for actual PSFCH transmission, a total of 3 symbols.
  • GP guard period
  • AGC automatic gain control
  • the available resources include the first time slot and/or the second time slot that meets the first condition, and resource reselection can be performed based on the available resources to select the first time slot that meets the first condition and/or the second time slot that meets the first condition.
  • the first condition includes:
  • the first symbols can be used to send the PSSCH, and the first symbols do not include a demodulation reference signal DMRS symbol.
  • the time slot satisfies the first condition.
  • the second-order SCI is the second-stage SCI.
  • SCI can include the first-order SCI (1st SCI) and the second-order SCI (2nd-CSI).
  • the 1st SCI can be carried by PSCCH, and can include at least one of the following messages: priority indication information, PSSCH time-frequency resource indication information and modulation and coding scheme (MCS) indication information, etc.
  • MCS modulation and coding scheme
  • 2nd-CSI represents the second-order SCI, which specifically uses the resources or part of the resources of PSSCH, and can include, for example, at least one of the following messages: layer 1 source ID, destination ID, HARQ process indication information, PSFCH resource indication information, etc.
  • the terminal needs to decode the 2nd SCI to obtain key information such as the terminal ID, HARQ process ID, redundancy version, cast type, etc., for decoding subsequent PSSCH data.
  • the terminal needs to decode the 2nd SCI before obtaining the symbol occupied by the SL-PRS, so as to decode the SL-PRS; and the resources occupied by the second-order SCI and the SL-PRS resources need to be time-division multiplexed, so the first terminal 101 can send the SL-PRS after the symbol at the end of the second-order SCI.
  • the time slot meets the first condition and can be used as a resource for sending SL-PRS to ensure the normal operation of SCI and the normal transmission of DMRS.
  • the symbols that can be used to send SL-PRS include symbols 4 to 10, and the number of consecutive symbols is greater than 4, then the first condition is met, and the time slot can be used to send SL-PRS.
  • the symbols that can be used to send SL-PRS include symbols 3 to 7, and the number of consecutive symbols is greater than 4, then the first condition is met, and the time slot can be used to send SL-PRS.
  • the unavailable resources include at least one of the following:
  • the first time slot that does not satisfy the first condition and the second time slot that does not satisfy the first condition.
  • the first time slot and the second time slot that do not meet the first condition cannot be used to send SL-PRS.
  • the number of consecutive symbols that can be used to send SL-PRS is less than M, and it cannot be used to send SL-PRS.
  • the first condition further includes:
  • the number of second symbols that can be used to send the PSSCH is greater than or equal to a preset value.
  • the remaining number of symbols used to send PSSCH is greater than or equal to a preset value.
  • the preset value can be set to the minimum number of symbols for sending PSSCH to ensure that PSSCH can still be transmitted normally.
  • the SL-PRS is sent periodically, and a time slot corresponding to a part of the period includes the PSFCH;
  • resource reselection is performed to select a first time slot satisfying a first condition and/or a second time slot satisfying the first condition to send the SL-PRS.
  • the first terminal 101 can perform a muting operation (muting) on the SL-PRS in the time slot corresponding to the period including the PSFCH.
  • the muting operation is to not send the SL-PRS to avoid the possibility that the SL-PRS cannot be sent in the time slot corresponding to the period including the PSFCH.
  • the first terminal 101 can also perform resource reselection in the time slot corresponding to the period including the PSFCH, select the first time slot that meets the first condition and/or the second time slot that meets the first condition to send the SL-PRS, or directly select the time slot corresponding to the period not including the PSFCH to perform Sidelink transmission of the current period to achieve the transmission of the SL-PRS.
  • the second condition includes at least one of the following:
  • the number of consecutive symbols is not preconfigured in a resource pool
  • the number of consecutive symbols notified by a higher layer is not received, for example, a higher layer in the first terminal 101 (for example, a layer above the physical layer and the MAC layer) does not notify the value of M;
  • Receiving at least two of the consecutive symbol numbers notified by a higher layer, for example, a higher layer in the first terminal 101 notifies a plurality of values, for example, M 2 or 4;
  • the priority of the transmitted service is lower than the priority threshold, that is, the priority of the transmitted service is low.
  • the priority threshold can be preset, that is, a "preset priority threshold”.
  • the number of consecutive symbols satisfies a second condition, and determining the available resources comprises at least one of the following:
  • the SL-PRS sent periodically includes the number of consecutive symbols of the SL-PRS sent by the available resources corresponding to the period of the PSFCH as a third value; the third value is less than or equal to the second value.
  • muting or resource reselection is not required, and M is sent in the slot corresponding to the period.
  • the number of consecutive symbols of the available resources corresponding to the period is determined to be 2 or 1.
  • the symbols that can be used to send SL-PRS include symbols 6 to 7.
  • the time slot does not meet the first condition and SL-PRS cannot be sent; after M drops to 2, the time slot meets the first condition and SL-PRS can be sent.
  • the number of consecutive symbols sent can be adjusted, for example, the number of consecutive symbols is reduced so that more resources can be used to send SL-PRS to improve resource utilization.
  • the second condition can be pre-set, that is, a "second preset condition”.
  • determining available resources and/or unavailable resources among candidate resources for sending the SL-PRS comprises at least one of the following:
  • Step 2023 The physical layer function entity excludes the unavailable resources and forms a first candidate resource set, and sends the first candidate resource set to a media access control layer (Media Access Control, MAC);
  • Media Access Control Media Access Control
  • Step 2024 The MAC layer functional entity selects the available resource in the second candidate resource set reported by the physical layer.
  • step 2021 in the process of determining resources, can be executed by the physical layer functional entity of the first terminal 101, and the physical layer functional entity excludes the unavailable resources; forms a first candidate resource set (ie, the updated SA), and reports the first candidate resource set to the MAC layer.
  • a first candidate resource set ie, the updated SA
  • the physical layer function entity excludes unavailable time slots Slot3, Slot7, and Slot10 respectively when initializing candidate resources within the selection window.
  • the MAC layer functional entity of the first terminal 101 selects the available resources from one or more second candidate resource sets reported by the physical layer for Sidelink PSCCH/PSSCH transmission; wherein, the second candidate resource set may be after the physical layer functional entity performs resource exclusion, or may be without performing resource exclusion, which is not limited in the embodiments of the present disclosure.
  • step 2023 includes:
  • the physical layer function entity excludes the unavailable resources and the target resources when initializing the candidate resources in the selection window, and forms a first candidate resource set;
  • the physical layer functional entity initializes the candidate resources in the selection window and excludes the target resources to form a third candidate resource set; excludes unavailable resources in the third candidate resource set to form a first candidate resource set;
  • the target resource includes at least one of the following:
  • the resources corresponding to the time slots that are not monitored overlap with the resources reserved by other UEs and whose reference signal received power RSRP is greater than a preset RSRP threshold.
  • the physical layer functional entity when it excludes unavailable resources, it can exclude them when initializing candidate resources and exclude target resources.
  • Source target resources such as resources corresponding to the monitoring time slot, resources that overlap with other UE reserved resources and whose reference signal receiving power (RSRP) is greater than the threshold, and target resources cannot be used to send SL-PRS.
  • RSRP reference signal receiving power
  • the physical layer functional entity may also first initialize candidate resources and exclude target resources to form a third candidate resource set; then exclude the unavailable resources from the third candidate resource set, and finally form a first candidate resource set to send to the MAC layer functional entity.
  • the physical layer functional entity may exclude unavailable resources during initialization or after initialization; by excluding unavailable resources, the selection range of available resources is narrowed, thereby improving the efficiency of resource selection.
  • Step 203 Send the SL-PRS to a receiving end within available resources among the candidate resources.
  • Step 204 The second terminal 102 receives the side link positioning reference signal SL-PRS sent by the first terminal 101 .
  • the first terminal 101 sends the SL-PRS to the receiving end (the second terminal 102) within the available resources in the candidate resources.
  • the SL-PRS can be sent, thereby improving the positioning performance without affecting the feedback performance of HARQ-ACK using PSFCH.
  • the disclosed embodiment provides a method for selecting resources for sending SL-PRS to further improve the sidelink positioning technology.
  • the names of information, etc. are not limited to the names recorded in the embodiments, and terms such as “information”, “message”, “signal”, “signaling”, “report”, “configuration”, “indication”, “instruction”, “command”, “channel”, “parameter”, “domain”, “field”, “symbol”, “symbol”, “code element”, “codebook”, “codeword”, “codepoint”, “bit”, “data”, “program”, and “chip” can be used interchangeably.
  • codebook can be a collection of one or more codewords/precoding matrices.
  • terms such as “uplink”, “uplink”, “physical uplink” can be interchangeable, and terms such as “downlink”, “downlink”, “physical downlink” can be interchangeable, and terms such as “side”, “sidelink”, “side communication”, “sidelink communication”, “direct connection”, “side link”, “direct connection communication”, “side link communication” can be interchangeable.
  • DCI downlink control information
  • DL downlink
  • UL uplink
  • UL DCI uplink
  • the terms “physical downlink shared channel (PDSCH)”, “DL data” and the like can be interchangeable with each other, and the terms “physical uplink shared channel (PUSCH)”, “UL data” and the like can be interchangeable with each other.
  • radio wireless
  • RAN radio access network
  • AN access network
  • RAN-based and the like
  • search space search space set
  • search space configuration search space set configuration
  • control resource set CORESET
  • CORESET configuration control resource set
  • synchronization signal SS
  • synchronization signal block SSB
  • reference signal RS
  • pilot pilot signal
  • terms such as “moment”, “time point”, “time”, and “time position” can be interchangeable, and terms such as “duration”, “period”, “time window”, “window”, and “time” can be interchangeable.
  • CC component carrier
  • cell cell
  • frequency carrier frequency carrier
  • carrier frequency carrier frequency
  • RB resource block
  • PRB physical resource block
  • SCG resource element group
  • REG resource element group
  • PRB pair RB pair
  • RE resource element
  • wireless access scheme and waveform may be used interchangeably.
  • precoding means "precoding", “precoder”, “weight”, "precoding
  • precoding weight means "quasi-co-location (QCL)", "transmission configuration indication (TCI) state", "spatial relation”, “spatial domain filter”, “transmission power”, “phase rotation”, "antenna port”, “antenna port group”, “layer”, “the number of layers”, “rank”, “resource”, “resource set”, “resource group”, “beam”, “beam width”, “beam angular degree”, “antenna”, “antenna element”, and “panel” are used interchangeably.
  • frame radio frame
  • subframe slot
  • sub-slot sub-slot
  • mini-slot mini-slot
  • sub-slot sub-slot
  • mini-slot mini-slot
  • obtain can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from high levels, obtaining by self-processing, autonomous implementation, etc.
  • terms such as “certain”, “preset”, “preset”, “set”, “indicated”, “some”, “any”, and “first” can be interchangeable, and "specific A”, “preset A”, “preset A”, “set A”, “indicated A”, “some A”, “any A”, and “first A” can be interpreted as A pre-defined in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., and can also be interpreted as specific A, some A, any A, or first A, etc., but is not limited to this.
  • the determination or judgment can be performed by a value represented by 1 bit (0 or 1), by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values (for example, comparison with a predetermined value), but is not limited to this.
  • not expecting to receive can be interpreted as not receiving on time domain resources and/or frequency domain resources, or as not performing subsequent processing on the data after receiving the data; "not expecting to send” can be interpreted as not sending, or as sending but not expecting the recipient to respond to the sent content.
  • step 201 may be implemented as an independent embodiment
  • step 202 may be implemented as an independent embodiment
  • step 203 may be implemented as an independent embodiment
  • step 202 and step 203 may be implemented as an independent embodiment, but is not limited thereto.
  • step 2021 and step 2022 may be executed in an exchanged order or simultaneously, and step 2023 and step 2024 may be executed in an exchanged order or simultaneously.
  • step 2021 and step 2022 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • step 2023 and step 2024 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • FIG. 9 is a flow chart of a resource determination method according to an embodiment of the present disclosure.
  • the above method may be applied to the first terminal 101, and the above method includes:
  • Step 901 determining the number of consecutive symbols occupied by the sending edge link positioning reference signal SL-PRS;
  • Step 902 Determine available resources and/or unavailable resources among candidate resources for sending the SL-PRS according to the number of consecutive symbols.
  • step 901 can refer to the optional implementation of step S201 in FIG. 2 and other related parts in the embodiment involved in FIG. 2 , which will not be described in detail here.
  • the first terminal 101 determines, according to the number of consecutive symbols, available resources or unavailable resources in the candidate resources for sending the SL-PRS, including at least one of the following:
  • Step 9021 determining available resources among the candidate resources according to the number of consecutive symbols
  • Step 9022 Determine unavailable resources of the candidate resources according to the number of consecutive symbols.
  • the available resources include at least one of the following:
  • the first time slot includes: a time slot that does not include a physical side link feedback channel PSFCH; the second time slot includes: a time slot that includes PSFCH;
  • the unavailable resources include at least one of the following:
  • the first time slot that does not satisfy the first condition and the second time slot that does not satisfy the first condition.
  • the first condition includes:
  • the first symbols can be used to send the PSSCH, and the first symbols do not include a demodulation reference signal DMRS symbol.
  • the first condition also includes:
  • the number of second symbols that can be used to send the PSSCH is greater than or equal to a preset value.
  • the SL-PRS is sent periodically, and a time slot corresponding to a part of the periods includes the PSFCH;
  • resource reselection is performed to select a first time slot satisfying a first condition and/or a second time slot satisfying the first condition to send the SL-PRS.
  • the first terminal 101 determines, according to the number of consecutive symbols, available resources among the candidate resources, including:
  • the number of consecutive symbols satisfies the second condition, and determining the available resources includes at least one of the following:
  • the number of consecutive symbols of the SL-PRS sent by the available resources corresponding to the first time slot is a first value
  • the number of consecutive symbols of the SL-PRS sent by the available resources corresponding to the second time slot is a second value: the second value is less than or equal to the first value;
  • the SL-PRS sent periodically includes a third value in which the number of consecutive symbols of the SL-PRS sent by the available resources corresponding to the period of the PSFCH is less than or equal to the second value.
  • the second condition includes at least one of the following:
  • the number of consecutive symbols is not preconfigured in the resource pool
  • the number of consecutive symbols is preconfigured with at least two values in the resource pool;
  • the priority of the transmitted service is lower than the priority threshold.
  • the first terminal 101 determines, according to the number of consecutive symbols, available resources and/or unavailable resources in the candidate resources for sending the SL-PRS, including at least one of the following:
  • Step 9023 The physical layer function entity excludes the unavailable resources and forms a first candidate resource set, and sends the first candidate resource set to the MAC layer;
  • Step 9024 The MAC layer functional entity selects the available resources in the second candidate resource set reported by the physical layer.
  • the physical layer function entity of the first terminal 101 excludes the unavailable resources and forms a first candidate resource set, including:
  • the physical layer function entity excludes the unavailable resources and the target resources when initializing the candidate resources in the selection window, and forms a first candidate resource set;
  • the physical layer functional entity initializes the candidate resources in the selection window and excludes the target resources to form a third candidate resource set; excludes unavailable resources in the third candidate resource set to form a first candidate resource set;
  • the target resource includes at least one of the following:
  • the resources corresponding to the time slots that are not monitored overlap with the resources reserved by other UEs and whose reference signal received power RSRP is greater than a preset RSRP threshold.
  • the first terminal 101 after the first terminal 101 determines, according to the number of consecutive symbols, available resources and/or unavailable resources in the candidate resources for sending the SL-PRS, the first terminal 101 further executes:
  • the SL-PRS is sent to a receiving end within available resources among the candidate resources.
  • step 901 may be implemented as an independent embodiment
  • step 902 may be implemented as an independent embodiment
  • the combination of step 901 and step 902 may be implemented as an independent embodiment, but is not limited thereto.
  • step 9021 and step 9022 may be executed in an exchanged order or simultaneously, and step 9023 and step 9024 may be executed in an exchanged order or simultaneously.
  • step 9021 and step 9022 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • step 9023 and step 9024 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • FIG. 10 is a schematic flow chart of a signal receiving method according to an embodiment of the present disclosure.
  • the above method may be applied to the second terminal 102, and the above method includes:
  • Step 1001 receiving a side link positioning reference signal SL-PRS sent by a transmitting end;
  • the SL-PRS is sent by the transmitting end after determining the number of consecutive symbols occupied by sending the SL-PRS and determining the available resources and/or unavailable resources among the candidate resources for sending the SL-PRS based on the number of consecutive symbols, and then selecting the corresponding available resources.
  • the second terminal 102 receives the SL-PRS sent by the transmitting end, including:
  • the SL-PRS is received in available resources among the candidate resources; the available resources include resources among the candidate resources except the unavailable resources.
  • the available resources include at least one of the following:
  • the first time slot includes: a time slot that does not include a physical side link feedback channel PSFCH; the second time slot includes: a time slot that includes PSFCH;
  • the unavailable resources include at least one of the following:
  • the first time slot that does not satisfy the first condition and the second time slot that does not satisfy the first condition.
  • the first condition includes:
  • the first symbols can be used to send the PSSCH, and the first symbols do not include a demodulation reference signal DMRS symbol.
  • the first condition also includes:
  • the number of second symbols that can be used to send the PSSCH is greater than or equal to a preset value.
  • the number of consecutive symbols satisfies the second condition, and the available resources include at least one of the following:
  • the number of consecutive symbols of the SL-PRS sent by the available resources corresponding to the first time slot is a first value
  • the number of consecutive symbols of the SL-PRS sent by the available resources corresponding to the second time slot is a second value: the second value is less than or equal to the first value;
  • the SL-PRS sent periodically includes a third value in which the number of consecutive symbols of the SL-PRS sent by the available resources corresponding to the period of the PSFCH is less than or equal to the second value.
  • the second condition includes at least one of the following:
  • the number of consecutive symbols is not preconfigured in the resource pool
  • the number of consecutive symbols is preconfigured with at least two values in the resource pool;
  • the priority of the transmitted service is lower than the priority threshold.
  • the embodiments of the present disclosure also propose a device for implementing any of the above methods, for example, a device is proposed, the above device includes a unit or module for implementing each step performed by the terminal in any of the above methods.
  • a device is also proposed, including a unit or module for implementing each step performed by a network device (such as an access network device, a core network function node, a core network device, etc.) in any of the above methods.
  • a network device such as an access network device, a core network function node, a core network device, etc.
  • the division of the units or modules in the above device is only a division of logical functions, which can be fully or partially integrated into one physical entity or physically separated in actual implementation.
  • the units or modules in the device can be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and instructions are stored in the memory.
  • the processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory inside the device or a memory outside the device.
  • CPU central processing unit
  • microprocessor a microprocessor
  • the units or modules in the device may be implemented in the form of hardware circuits, and the functions of some or all of the units or modules may be implemented by designing the hardware circuits.
  • the hardware circuits may be understood as one or more processors; for example, in one implementation, the hardware circuits are application-specific integrated circuits (ASICs), and the functions of some or all of the above units or modules may be implemented by designing the logical relationship of the components in the circuits; for another example, in another implementation, the hardware circuits may be implemented by programmable logic devices (PLDs), and Field Programmable Gate Arrays (FPGAs) may be used as an example, which may include a large number of logic gate circuits, and the connection relationship between the logic gate circuits may be configured by configuring the configuration files, thereby implementing the functions of some or all of the above units or modules. All units or modules of the above devices may be implemented in the form of software called by the processor, or in the form of hardware circuits, or in the form of software called by the processor, and the remaining part may be implemented in
  • the processor is a circuit with signal processing capability.
  • the processor may be a circuit with instruction reading and running capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which may be understood as a microprocessor), or a digital signal processor (DSP); in another implementation, the processor may implement certain functions through the logical relationship of a hardware circuit, and the logical relationship of the above hardware circuit may be fixed or reconfigurable, such as a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA.
  • ASIC application-specific integrated circuit
  • PLD programmable logic device
  • the process of the processor loading a configuration document to implement the hardware circuit configuration may be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules.
  • it can also be a hardware circuit designed for artificial intelligence, which can be understood as ASIC, such as Neural Network Processing Unit (NPU), Tensor Processing Unit (TPU), Deep Learning Processing Unit (DPU), etc.
  • ASIC Neural Network Processing Unit
  • NPU Neural Network Processing Unit
  • TPU Tensor Processing Unit
  • DPU Deep Learning Processing Unit
  • Fig. 11 is one of the schematic diagrams of the structure of the terminal proposed in the embodiment of the present disclosure.
  • the terminal 110 may include: at least one of a symbol determination module 1101, a resource determination module 1102, and the like.
  • the above-mentioned symbol determination module 1101 is used to determine the number of consecutive symbols occupied by sending the side link positioning reference signal SL-PRS; the resource determination module 1102 is used to determine the available resources and/or unavailable resources among the candidate resources for sending the SL-PRS based on the number of consecutive symbols.
  • the resource determination module 1102 is used to execute at least one of the resource determination and other communication steps (for example, step 202, step 2021, step 2022, step 2023, step 2024, but not limited to these) performed by the first terminal 101 in any of the above methods, which will not be repeated here.
  • FIG12 is a second schematic diagram of the structure of a terminal proposed in an embodiment of the present disclosure.
  • the terminal 120 may include: a receiving module 1201 .
  • the receiving module 1201 is configured to receive a side link positioning reference signal SL-PRS sent by a transmitting end;
  • the SL-PRS is sent by the transmitting end after determining the number of consecutive symbols occupied by sending the SL-PRS and determining the available resources and/or unavailable resources in the candidate resources for sending the SL-PRS according to the number of consecutive symbols, and selecting the corresponding available resources for sending.
  • the above-mentioned receiving module 1201 is used to execute at least one of the communication steps such as resource determination performed by the second terminal 102 in any of the above methods (such as step 1001, but not limited to this), which will not be repeated here.
  • FIG13A is a schematic diagram of the structure of a terminal 1300 (such as a user equipment, etc.) proposed in an embodiment of the present disclosure.
  • the terminal 1300 may be a chip, a chip system, or a processor that supports a network device to implement any of the above methods, or may be a device that supports a terminal to implement any of the above methods.
  • the terminal 1300 may be used to implement the method described in the above method embodiment, and the details may refer to the description in the above method embodiment.
  • the terminal 1300 includes one or more processors 1301.
  • the processor 1301 may be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit.
  • the baseband processor may be used to process the communication protocol and the communication data
  • the central processing unit may be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute a program, and process the data of the program.
  • the terminal 1300 is used to execute any of the above methods.
  • the terminal 1300 further includes one or more memories 1302 for storing instructions.
  • the memory 1302 may also be outside the terminal 1300.
  • the terminal 1300 further includes one or more transceivers 1304.
  • the transceiver 1304 performs at least one of the communication steps such as sending and/or receiving in the above method (for example, step 203, step 204, step 1001, but not limited thereto), and the processor 1301 performs at least one of the other steps (for example, step 201, step 202, step 901, step 902, step 2021, step 2022, step 2023, step 2024, step 9021, step 9022, step 9023, step 9024 but not limited thereto).
  • the transceiver may include a receiver and/or a transmitter, and the receiver and the transmitter may be separate or integrated.
  • the terms such as transceiver, transceiver unit, transceiver, transceiver circuit, etc. may be replaced with each other, the terms such as transmitter, transmission unit, transmitter, transmission circuit, etc. may be replaced with each other, and the terms such as receiver, receiving unit, receiver, receiving circuit, etc. may be replaced with each other.
  • the terminal 1300 may include one or more interface circuits 1303.
  • the interface circuit 1303 is connected to the memory 1302, and the interface circuit 1303 may be used to receive signals from the memory 1302 or other devices, and may be used to send signals to the memory 1302 or other devices.
  • the interface circuit 1303 may read instructions stored in the memory 1302 and send the instructions to the processor 1301.
  • the terminal 1300 described in the above embodiments may be a communication device such as a user device, but the scope of the terminal 1300 described in the present disclosure is not limited thereto, and the structure of the terminal 1300 may not be limited by FIG. 13A.
  • the communication device may be an independent device or may be part of a larger device.
  • the communication device may be: (1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.
  • Fig. 13B is a schematic diagram of the structure of a chip 1310 proposed in an embodiment of the present disclosure.
  • the terminal 1300 may be a chip or a chip system
  • the chip 1310 includes one or more processors 1311 , and the chip 1310 is configured to execute any of the above methods.
  • the chip 1310 further includes one or more 1313.
  • the interface circuit 1313 is connected to the memory 1312, and the interface circuit 1313 can be used to receive signals from the memory 1312 or other devices, and the interface circuit 1313 can be used to send signals to the memory 1312 or other devices.
  • the interface circuit 1313 can read the instructions stored in the memory 1312 and send the instructions to the processor 1311.
  • the interface circuit 1313 performs at least one of the communication steps such as sending and/or receiving in the above method (for example, step 203, step 204, step 1001, but not limited to this), and the processor 1311 performs at least one of the other steps (for example, step 201, step 202, step 901, step 902, step 2021, step 2022, step 2023, step 2024, step 9021, step 9022, step 9023, step 9024 but not limited to this).
  • interface circuit interface circuit
  • transceiver pin transceiver
  • chip 1310 also includes one or more memories 1312 for storing instructions. Alternatively, all or part of memory 1312 may be outside chip 1310.
  • the present disclosure also proposes a storage medium, on which instructions are stored, and when the instructions are executed on the terminal 1300, the terminal 1300 executes any of the above methods.
  • the storage medium is an electronic storage medium.
  • the storage medium is a computer-readable storage medium, but is not limited thereto, and it may also be a storage medium readable by other devices.
  • the storage medium may be a non-transitory storage medium, but is not limited thereto, and it may also be a temporary storage medium.
  • the present disclosure also proposes a program product, and when the program product is executed by the terminal 1300, the terminal 1300 executes any of the above methods.
  • the program product is a computer program product.
  • the present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to execute any one of the above methods.

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Abstract

本公开实施例涉及一种资源确定方法、信号接收方法、终端及通信系统。所述资源确定方法包括：确定发送边链路定位参考信号SL-PRS所占用的连续符号数；根据所述连续符号数，确定发送所述SL-PRS的候选资源中的可用资源和/或不可用资源，使得可用于发送SL-PRS的资源覆盖率更高，即使在配置了PSFCH的共享资源池内，也能进行SL-PRS的发送，进而提升定位性能，同时不影响使用PSFCH进行HARQ-ACK的反馈性能。

Description

资源确定方法、信号接收方法、终端及通信系统 技术领域
本公开涉及通信技术领域，尤其涉及一种资源确定方法、信号接收方法、终端及通信系统。
背景技术
在目前所研究的移动通信技术中，对于边链路定位(sidelink positioning)的研究正在进行。具体地，边链路定位基于终端设备与终端设备之间的边链路(sidelink，SL)进行，以实现对终端设备的定位。例如，基于边链路的定位可以包括绝对定位、相对定位以及测距等。因此，终端设备需要选择用于发送边链路定位参考信号(sidelink-positioning reference signal，简称SL-PRS)的资源，以达到在直通链路上进行定位的目的。
发明内容
本公开实施例提供了一种资源确定方法、信号接收方法、终端及通信系统，以提供一种选择用于发送SL-PRS的资源的方式。
一方面，本公开实施例提供了一种资源确定方法，所述方法包括：
确定发送边链路定位参考信号SL-PRS所占用的连续符号数；
根据所述连续符号数，确定发送所述SL-PRS的候选资源中的可用资源和/或不可用资源。
另一方面，本公开实施例还提供了一种信号接收方法，所述方法包括：
接收发送端发送的边链路定位参考信号SL-PRS；
其中，所述SL-PRS为所述发送端在确定发送SL-PRS所占用的连续符号数，并根据所述连续符号数，确定发送所述SL-PRS的候选资源中的可用资源和/或不可用资源后，选择对应的可用资源发送的。
另一方面，本公开实施例还提供了一种终端，所述终端包括：
符号确定模块，用于确定发送边链路定位参考信号SL-PRS所占用的连续符号数；
资源确定模块，用于根据所述连续符号数，确定发送所述SL-PRS的候选资源中的可用资源和/或不可用资源
另一方面，本公开实施例还提供了一种终端，所述终端包括：
接收模块，用于接收发送端发送的边链路定位参考信号SL-PRS；
其中，所述SL-PRS为所述发送端在确定发送SL-PRS所占用的连续符号数，并根据所述连续符号数，确定发送所述SL-PRS的候选资源中的可用资源和/或不可用资源后，选择对应的可用资源发送的。
另一方面，本公开实施例还提供了一种终端，包括：
一个或多个处理器；
其中，所述终端用于执行实现本公开实施例中所述的资源确定方法。
另一方面，本公开实施例还提供了一种终端，包括：
一个或多个处理器；
其中，所述终端用于执行实现本公开实施例中所述的信号接收方法。
本公开实施例还提供了一种通信系统，包括第一终端、第二终端；其中，所述第一终端被配置为实现本公开实施例中所述的资源确定方法，所述第二终端被配置为实现本公开实施例中所述的信号接收方法。
本公开实施例还提供了一种存储介质，所述存储介质存储有指令，当所述指令在通信设备上运行时，使得所述通信设备执行如本公开实施例中所述的资源确定方法，或执行如本公开实施例中所述的信号接收方法。
本公开实施例中，确定发送边链路定位参考信号SL-PRS所占用的连续符号数,根据所述连续符号数，确定发送所述SL-PRS的候选资源中的可用资源和/或不可用资源，使得可用于发送SL-PRS的资源覆盖率更高，即使在配置了PSFCH的共享资源池内，也能进行SL-PRS的发送，进而提升定位性能，同时不影响使用PSFCH进行HARQ-ACK的反馈性能。
本公开实施例附加的方面和优点将在下面的描述中部分给出，这些将从下面的描述中变得明显，或通过本公开的实践了解到。
附图说明
为了更清楚地说明本公开实施例中的技术方案，以下对实施例描述所需的附图进行介绍，以下附图仅仅是本公开的一些实施例，不对本公开的保护范围造成具体限制。
图1为根据本公开实施例提供的通信系统的架构的一个示例性示意图；
图2为根据本公开实施例提供的方法的一个示例性交互示意图；
图3为根据本公开实施例提供的方法的一个示例示意图之一；
图4为根据本公开实施例提供的方法的一个示例示意图之二；
图5为根据本公开实施例提供的方法的一个示例示意图之三；
图6为根据本公开实施例提供的方法的一个示例示意图之四；
图7为根据本公开实施例提供的方法的一个示例示意图之五；
图8为根据本公开实施例提供的方法的一个示例示意图之六；
图9为根据本公开实施例提供的资源确定方法的流程示意图；
图10为根据本公开实施例提供的信号接收方法的流程示意图；
图11是本公开实施例提出的终端的结构示意图之一；
图12是本公开实施例提出的终端的结构示意图之二；
图13A是本公开实施例提出的终端的结构示意图之三；
图13B是本公开实施例提出的芯片的结构示意图。
具体实施方式
本公开实施例提出了一种资源确定方法、信号接收方法、终端及通信系统。
第一方面，本公开实施例提出了一种资源确定方法，所述方法包括：
确定发送边链路定位参考信号SL-PRS所占用的连续符号数；
根据所述连续符号数，确定发送所述SL-PRS的候选资源中的可用资源和/或不可用资源。
在上述实施例中，确定发送边链路定位参考信号SL-PRS所占用的连续符号数,根据所述连续符号数，确定发送所述SL-PRS的候选资源中的可用资源和/或不可用资源。这样，可基于可用资源行资源重选和/或基于不可用资源进行不可用资源排除，使得候选资源中可用于发送SL-PRS的资源覆盖率更高；即使在配置了PSFCH的共享资源池内，也能进行SL-PRS的发送，进而提升定位性能，同时不影响使用PSFCH进行混合自动重传请求(Hybrid Automatic Repeat ReQuest，HARQ)-ACK的反馈性能。
结合第一方面的一些实施例，在一些实施例中，所述根据所述连续符号数，确定发送所述SL-PRS的候选资源中的可用资源或不可用资源，包括以下至少一种：
根据所述连续符号数，确定所述候选资源中的可用资源；
根据所述连续符号数，确定所述候选资源的不可用资源。
在上述实施例中，根据连续符号数，确定资源池中的可用资源，便于后续在可用资源中发送SL-PRS；或者，还可以根据连续符号数，确定资源池中的不可用资源，通过排除不可用资源进而确定可用资源，以实现在可用资源中发送SL-PRS，避免出现SL-PRS发送失败的情况。
结合第一方面的一些实施例，在一些实施例中，所述可用资源包括以下至少一种：
满足第一条件的第一时隙、满足所述第一条件的第二时隙；
其中，所述第一时隙包括：不包括物理边链路反馈信道PSFCH的时隙；所述第二时隙包括：包括PSFCH的时隙；
和/或
所述不可用资源包括以下至少一种：
不满足所述第一条件的所述第一时隙、不满足所述第一条件的所述第二时隙。
在上述实施例中，可基于可用资源行资源重选，选择满足第一条件的第一时隙和/或满足所述第一条件的第二时隙；或者基于不可用资源进行不可用资源排除，例如排除不满足所述第一条件的所述第一时隙、不满足所述第一条件的所述第二时隙；这样，使得候选资源中可用于发送SL-PRS的资源覆盖率更高。
结合第一方面的一些实施例，在一些实施例中，所述第一条件包括：
在该时隙内的第二阶边链路控制信息SCI之后，存在至少所述连续符号数个第一符号，所述第一符号可用于发送PSSCH，且所述第一符号不包括解调参考信号DMRS符号。
在上述实施例中，SCI可以包括第一阶SCI(1st SCI)以及第二阶SCI(2nd-CSI)。其中，1st SCI具体可以通过PSCCH来承载，并且可以包含下述消息至少之一：优先级指示信息、PSSCH的时频资源指示信息和调制与编码策略(Modulation and Coding Scheme，MCS)指示信息等；2nd-CSI表示第二阶SCI，其具体使用的是PSSCH的资源或者部分资源，并且可以包含例如下述消息至少之一：层1的source(源)ID、destination(目的地)ID、HARQ process(处理)指示信息、PSFCH资源指示信息等。
具体地，终端在解码(decoding)数据之前需要先解码2nd SCI，获得终端ID、HARQ进程ID、冗余版本(Redundancy Version)、强制类型转换(Cast type)等关键信息，用于解码后续的PSSCH数据。也就是说，终端需要解码2nd SCI之后才能获得SL-PRS所占用的symbol，从而对SL-PRS进行解码；因此，在第二阶SCI结束的symbol之后，才能发送SL-PRS。在该时隙内的第二阶SCI之后，若不包括DMRS符号且可以发送PSSCH的符号数大于或等于M，则该时隙满足第一条件，可以作为发送SL-PRS的资源，保证SCI正常进行以及DMRS正常传输。
结合第一方面的一些实施例，在一些实施例中，所述第一条件还包括：
除所述第一符号之外的剩余符号中，可用于用于发送PSSCH的第二符号的数目大于或等于预设数值。
在上述实施例中，剩余的用于发送PSSCH的symbol个数大于或等于预设数值，例如，预设数值可以设定为发送PSSCH的最小symbol个数，以确保PSSCH仍能正常传输。
结合第一方面的一些实施例，在一些实施例中，所述SL-PRS为周期性发送，且部分周期对应的时隙包括所述PSFCH；
在包括所述PSFCH的周期对应的时隙内，对所述SL-PRS执行静默操作；
和/或
在包括所述PSFCH的周期对应的时隙内，执行资源重选，选择满足第一条件的第一时隙和/或满足所述第一条件的第二时隙发送所述SL-PRS。
在上述实施例中，如果当前发送是周期(periodic)SL-PRS，且多个周期中，部分周期对应的slot包含PSFCH，则可以在包括所述PSFCH的周期对应的时隙内，对所述SL-PRS执行静默操作(muting)，静默操作即不发送SL-PRS，以避免包含PSFCH的周期对应的时隙可能会造成SL-PRS无法发送。
此外，还可以在包括所述PSFCH的周期对应的时隙内，执行资源重选(resource reselection)，选择满足第一条件的第一时隙和/或满足所述第一条件的第二时隙发送所述SL-PRS，或者直接选择不包含PSFCH的周期对应的时隙进行当前周期的Sidelink发送，以实现SL-PRS的发送。
结合第一方面的一些实施例，在一些实施例中，所述根据所述连续符号数，确定所述候选资源中的可用资源，包括：
所述连续符号数满足第二条件，确定所述可用资源包括以下至少一项：
所述第一时隙对应的可用资源所发送的所述SL-PRS的连续符号数为第一数值；
所述第二时隙对应的可用资源所发送的所述SL-PRS的连续符号数为第二数值：所述第二数值小于或等于所述第一数值；
周期性发送的所述SL-PRS，包括所述PSFCH的周期对应的可用资源所发送的所述SL-PRS的连续符号数为第三数值；所述第三数值小于或等于所述第二数值。
在上述实施例中，对于连续符号数满足第二条件的可用资源，后续在发送SL-PRS时，可调整发送的连续符号数，例如，降低连续符号数，使得更多的资源可用于发送SL-PRS，以提升资源利用率。
结合第一方面的一些实施例，在一些实施例中，所述第二条件包括以下至少一项：
所述连续符号数在资源池中未被预配置；
所述连续符号数在资源池中被预配置了至少两种数值；
未接收到高层通知的所述连续符号数；
接收到高层通知的至少两种所述连续符号数；
所传输业务的优先级低于优先级阈值。
在上述实施例中，对于连续符号数的上述情况，在后续发送时，调整实际发送时的连续符号数；例如，降低连续符号数，使得更多的资源可用于发送SL-PRS，以提升资源利用率。
结合第一方面的一些实施例，在一些实施例中，所述根据所述连续符号数，确定发送所述SL-PRS的候选资源中的可用资源和/或不可用资源，包括以下至少一项：
物理层功能实体排除所述不可用资源，并形成第一候选资源集合，将所述第一候选资源集合发送至MAC层；
MAC层功能实体选择物理层上报的第二候选资源集合中的所述可用资源。
在上述实施例中，物理层功能实体排除所有不可用资源之后，更新候选资源集合SA，形成第一候选资源集合(即更新后的SA)，并将第一候选资源集合上报给MAC层。MAC层功能实体选择物理层上报的一个或多个第二候选资源集合中的所述可用资源，用于Sidelink的PSCCH/PSSCH发送；其中，第二候选资源集合可以是物理层功能实体执行资源排除后的，也可以是未执行资源排除的。
结合第一方面的一些实施例，在一些实施例中，所述物理层功能实体排除所述不可用资源，并形成第一候选资源集合，包括：
物理层功能实体在对选择窗内的候选资源初始化时，排除所述不可用资源，以及排除目标资源，并形成第一候选资源集合；
或
物理层功能实体对选择窗内的候选资源初始化以及排除目标资源，形成第三候选资源集合；排除所述第三候选资源集合中的不可用资源，并形成第一候选资源集合；
其中，所述目标资源包括以下至少一种：
未监听时隙对应的资源、与其它UE预留的资源发生重叠且参考信号接收功率RSRP大于预设RSRP阈值的资源。
在上述实施例中，物理层功能实体可以将不可用资源的排除在初始化时进行，也可以在初始化后进行；通过排除不可用资源进而缩小可用资源的选择范围，提升资源选择的效率。
结合第一方面的一些实施例，在一些实施例中，所述根据所述连续符号数，确定发送所述SL-PRS的候选资源中的可用资源和/或不可用资源之后，所述方法还包括：
在所述候选资源中的可用资源内，向接收端发送所述SL-PRS。
在上述实施例中，基于物理层进行不可用资源排除后和/或MAC层进行资源重选后的候选资源，其可用于发送SL-PRS的资源覆盖率更高，即使在配置了PSFCH的共享资源池内，也能进行SL-PRS的发送，进而提升定位性能，同时不影响使用PSFCH进行混合自动重传请求(Hybrid Automatic Repeat ReQuest，HARQ)-ACK的反馈性能。
第二方面，本公开实施例提出了一种信号接收方法，所述方法包括：
接收发送端发送的边链路定位参考信号SL-PRS；
其中，所述SL-PRS为所述发送端在确定发送SL-PRS所占用的连续符号数，并根据所述连续符号数，确定发送所述SL-PRS的候选资源中的可用资源和/或不可用资源后，选择对应的可用资源发送的。
在上述实施例中，所述SL-PRS为所述发送端在确定发送SL-PRS所占用的连续符号数，并根据所述连续符号数，确定发送所述SL-PRS的候选资源中的可用资源和/或不可用资源后，选择对应的可用资源发送的。这样，可基于可用资源行资源重选和/或基于不可用资源进行不可用资源排除，使得候选资源中可用于发送SL-PRS的资源覆盖率更高；即使在配置了PSFCH的共享资源池内，也能进行SL-PRS的发送，进而提升定位性能，同时不影响使用PSFCH进行HARQ-ACK的反馈性能。
结合第二方面的一些实施例，在一些实施例中，所述接收发送端发送的SL-PRS，包括：
在所述候选资源中的可用资源中，接收所述SL-PRS；所述可用资源包括所述候选资源中，除所述不可用资源的资源。
结合第二方面的一些实施例，在一些实施例中，所述可用资源包括以下至少一种：
满足第一条件的第一时隙、满足所述第一条件的第二时隙；
其中，所述第一时隙包括：不包括物理边链路反馈信道PSFCH的时隙；所述第二时隙包括：包括PSFCH的时隙；
和/或
所述不可用资源包括以下至少一种：
不满足所述第一条件的所述第一时隙、不满足所述第一条件的所述第二时隙。
结合第二方面的一些实施例，在一些实施例中，所述第一条件包括：
在该时隙内的第二阶SCI之后，存在至少所述连续符号数个第一符号，所述第一符号可用于发送PSSCH，且所述第一符号不包括解调参考信号DMRS符号。
结合第二方面的一些实施例，在一些实施例中，所述第一条件还包括：
除所述第一符号之外的剩余符号中，可用于用于发送PSSCH的第二符号的数目大于或等于预设数值。
结合第二方面的一些实施例，在一些实施例中，所述连续符号数满足第二条件，所述可用资源包括以下至少一项：
所述第一时隙对应的可用资源所发送的所述SL-PRS的连续符号数为第一数值；
所述第二时隙对应的可用资源所发送的所述SL-PRS的连续符号数为第二数值：所述第二数值小于或等于所述第一数值；
周期性发送的所述SL-PRS，包括所述PSFCH的周期对应的可用资源所发送的所述SL-PRS的连续符号数为第三数值；所述第三数值小于或等于所述第二数值。
结合第二方面的一些实施例，在一些实施例中，所述第二条件包括以下至少一项：
所述连续符号数在资源池中未被预配置；
所述连续符号数在资源池中被预配置了至少两种数值；
未接收到高层通知的所述连续符号数；
接收到高层通知的至少两种所述连续符号数；
所传输业务的优先级低于优先级阈值。
第三方面，本公开实施例还提供了一种终端，上述终端包括符号确定模块、资源确定模块中的至少一者；其中，上述终端用于执行第一方面的可选实现方式。
第四方面，本公开实施例还提供了一种终端，所述终端包括：接收模块；其中，上述终端用于执行第二方面的可选实现方式。
第五方面，本公开实施例还提供了一种终端，包括：
一个或多个处理器；
其中，所述终端用于执行第一方面的可选实现方式。
第六方面，本公开实施例还提供了一种终端，包括：
一个或多个处理器；
其中，所述终端用于执行第二方面的可选实现方式。
第七方面，本公开实施例还提供了一种通信系统，包括第一终端、第二终端；其中，所述第一终端被配置为执行如第一方面所述的可选实现方式，所述第二终端被配置为如第二方面所述的可选实现方式。
第八方面，本公开实施例还提供了一种存储介质，所述存储介质存储有指令，当所述指令在通信设备上运行时，使得所述通信设备执行如如第一方面、第二方面所述的可选实现方式。
第九方面，本公开实施例提出了程序产品，上述程序产品被通信设备执行时，使得上述通信设 备执行如第一方面、第二方面的可选实现方式所描述的方法。
第十方面，本公开实施例提出了计算机程序，当其在计算机上运行时，使得计算机执行如第一方面、第二方面的可选实现方式所描述的方法。
第十一方面，本公开实施例提供了一种芯片或芯片系统。该芯片或芯片系统包括处理电路，被配置为执行根据上述第一方面和第二方面的可选实现方式所描述的方法。
可以理解地，上述第一终端、第二终端通信系统、存储介质、程序产品、计算机程序、芯片或芯片系统均用于执行本公开实施例所提出的方法。因此，其所能达到的有益效果可以参考对应方法中的有益效果，此处不再赘述。
本公开实施例提出了资源确定方法、信号接收方法、终端及通信系统。在一些实施例中，资源确定方法与资源选择方法、资源确定方法等术语可以相互替换，信号接收方法与信号处理方法、资源确定方法等术语可以相互替换，信息处理系统、通信系统等术语可以相互替换。
本公开实施例并非穷举，仅为部分实施例的示意，不作为对本公开保护范围的具体限制。在不矛盾的情况下，某一实施例中的每个步骤均可以作为独立实施例来实施，且各步骤之间可以任意组合，例如，在某一实施例中去除部分步骤后的方案也可以作为独立实施例来实施，且在某一实施例中各步骤的顺序可以任意交换，另外，某一实施例中的可选实现方式可以任意组合；此外，各实施例之间可以任意组合，例如，不同实施例的部分或全部步骤可以任意组合，某一实施例可以与其他实施例的可选实现方式任意组合。
在各本公开实施例中，如果没有特殊说明以及逻辑冲突，各实施例之间的术语和/或描述具有一致性，且可以互相引用，不同实施例中的技术特征根据其内在的逻辑关系可以组合形成新的实施例。
本公开实施例中所使用的术语只是为了描述特定实施例的目的，而并非作为对本公开的限制。
在本公开实施例中，除非另有说明，以单数形式表示的元素，如“一个”、“一种”、“该”、“上述”、“所述”、“前述”、“这一”等，可以表示“一个且只有一个”，也可以表示“一个或多个”、“至少一个”等。例如，在翻译中使用如英语中的“a”、“an”、“the”等冠词(article)的情况下，冠词之后的名词可以理解为单数表达形式，也可以理解为复数表达形式。
在本公开实施例中，“多个”是指两个或两个以上。
在一些实施例中，“至少一者(至少一项、至少一个)(at least one of)”、“一个或多个(one or more)”、“多个(a plurality of)”、“多个(multiple)等术语可以相互替换。
在一些实施例中，“A、B中的至少一者”、“A和/或B”、“在一情况下A，在另一情况下B”、“响应于一情况A，响应于另一情况B”等记载方式，根据情况可以包括以下技术方案：在一些实施例中A(与B无关地执行A)；在一些实施例中B(与A无关地执行B)；在一些实施例中从A和B中选择执行(A和B被选择性执行)；在一些实施例中A和B(A和B都被执行)。当有A、B、C等更多分支时也类似上述。
在一些实施例中，“A或B”等记载方式，根据情况可以包括以下技术方案：在一些实施例中A(与B无关地执行A)；在一些实施例中B(与A无关地执行B)；在一些实施例中从A和B中选择执行(A和B被选择性执行)。当有A、B、C等更多分支时也类似上述。
本公开实施例中的“第一”、“第二”等前缀词，仅仅为了区分不同的描述对象，不对描述对象的位置、顺序、优先级、数量或内容等构成限制，对描述对象的陈述参见权利要求或实施例中上下文的描述，不应因为使用前缀词而构成多余的限制。例如，描述对象为“字段”，则“第一字段”和“第二字段”中“字段”之前的序数词并不限制“字段”之间的位置或顺序，“第一”和“第二”并不限制其修饰的“字段”是否在同一个消息中，也不限制“第一字段”和“第二字段”的先后顺序。再如，描述对象为“等级”，则“第一等级”和“第二等级”中“等级”之前的序数词并不限制“等级”之间的优先级。再如，描述对象的数量并不受序数词的限制，可以是一个或者多个，以“第一装置”为例，其中“装置”的数量可以是一个或者多个。此外，不同前缀词修饰的对象可以相同或不同，例如，描述对象为“装置”，则“第一装置”和“第二装置”可以是相同的装置或者不同的装置，其类型可以相同或不同；再如，描述对象为“信息”，则“第一信息”和“第二信息”可以是相同的信息或者不同的信息，其内容可以相同或不同。
在一些实施例中，“包括A”、“包含A”、“用于指示A”、“携带A”，可以解释为直接携带A，也可以解释为间接指示A。
在一些实施例中，“响应于……”、“响应于确定……”、“在……的情况下”、“在……时”、“当……时”、“若……”、“如果……”等术语可以相互替换。
在一些实施例中，“大于”、“大于或等于”、“不小于”、“多于”、“多于或等于”、“不少于”、“高于”、“高于或等于”、“不低于”、“以上”等术语可以相互替换，“小于”、“小于或等于”、“不大于”、“少于”、“少于或等于”、“不多于”、“低于”、“低于或等于”、“不高于”、“以下”等术语可以相互替换。
在一些实施例中，装置和设备可以解释为实体的、也可以解释为虚拟的，其名称不限定于实施例中所记载的名称，在一些情况下也可以被理解为“设备(equipment)”、“设备(device)”、“电路”、“网元”、“节点”、“功能”、“单元”、“部件(section)”、“系统”、“网络”、“芯片”、“芯片系统”、“实体”、“主体”等。
在一些实施例中，“网络”可以解释为网络中包含的装置，例如，接入网设备、核心网设备等。
在一些实施例中，“接入网设备(access network device，AN device)”也可以被称为“无线接入网设备(radio access network device，RAN device)”、“基站(base station，BS)”、“无线基站(radio base station)”、“固定台(fixed station)”，在一些实施例中也可以被理解为“节点(node)”、“接入点(access point)”、“发送点(transmission point，TP)”、“接收点(reception point，RP)”、“发送和/或接收点(transmission/reception point，TRP)”、“面板(panel)”、“天线面板(antenna panel)”、“天线阵列(antenna array)”、“小区(cell)”、“宏小区(macro cell)”、“小型小区(small cell)”、“毫微微小区(femto cell)”、“微微小区(pico cell)”、“扇区(sector)”、“小区组(cell group)”、“服务小区”、“载波(carrier)”、“分量载波(component carrier)”、“带宽部分(bandwidth part，BWP)”等。
在一些实施例中，“终端(terminal)”或“终端设备(terminal device)”可以被称为“用户设备(user equipment，UE)”、“用户终端(user terminal)”、“移动台(mobile station，MS)”、“移动终端(mobile terminal，MT)”、订户站(subscriber station)、移动单元(mobile unit)、订户单元(subscriber unit)、无线单元(wireless unit)、远程单元(remote unit)、移动设备(mobile device)、无线设备(wireless device)、无线通信设备(wireless communication device)、远程设备(remote device)、移动订户站(mobile subscriber station)、接入终端(access terminal)、移动终端(mobile terminal)、无线终端(wireless terminal)、远程终端(remote terminal)、手持设备(handset)、用户代理(user agent)、移动客户端(mobile client)、客户端(client)等。
在一些实施例中，获取数据、信息等可以遵照所在地国家的法律法规。
在一些实施例中，可以在得到用户同意后获取数据、信息等。
此外，本公开实施例的表格中的每一元素、每一行、或每一列均可以作为独立实施例来实施，任意元素、任意行、任意列的组合也可以作为独立实施例来实施。
图1是根据本公开实施例示出的通信系统的架构示意图。
如图1所示，通信系统100包括第一终端(terminal)101、第二终端102。
在一些实施例中，第一终端101、第二终端102例如包括手机(mobile phone)、可穿戴设备、物联网设备、具备通信功能的汽车、智能汽车、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端设备、无人驾驶(self-driving)中的无线终端设备、远程手术(remote medical surgery)中的无线终端设备、智能电网(smart grid)中的无线终端设备、运输安全(transportation safety)中的无线终端设备、智慧城市(smart city)中的无线终端设备、智慧家庭(smart home)中的无线终端设备中的至少一者，但不限于此。
可以理解的是，本公开实施例描述的通信系统是为了更加清楚的说明本公开实施例的技术方案，并不构成对于本公开实施例提出的技术方案的限定，本领域普通技术人员可知，随着系统架构的演变和新业务场景的出现，本公开实施例提出的技术方案对于类似的技术问题同样适用。
下述本公开实施例可以应用于图1所示的通信系统100、或部分主体，但不限于此。图1所示的各主体是例示，通信系统可以包括图1中的全部或部分主体，也可以包括图1以外的其他主体，各主体数量和形态为任意，各主体可以是实体的也可以是虚拟的，各主体之间的连接关系是例示，各主体之间可以不连接也可以连接，其连接可以是任意方式，可以是直接连接也可以是间接连接，可以是有线连接也可以是无线连接。
本公开各实施例可以应用于长期演进(Long Term Evolution，LTE)、LTE-Advanced(LTE-A)、LTE-Beyond(LTE-B)、SUPER 3G、IMT-Advanced、第四代移动通信系统(4th generation mobile communication system，4G)、)、第五代移动通信系统(5th generation mobile communication system，5G)、5G新空口(new radio，NR)、未来无线接入(Future Radio Access，FRA)、新无线接入技 术(New-Radio Access Technology，RAT)、新无线(New Radio，NR)、新无线接入(New radio access，NX)、未来一代无线接入(Future generation radio access，FX)、Global System for Mobile communications(GSM(注册商标))、CDMA2000、超移动宽带(Ultra Mobile Broadband，UMB)、IEEE 802.11(Wi-Fi(注册商标))、IEEE 802.16(WiMAX(注册商标))、IEEE 802.20、超宽带(Ultra-WideBand，UWB)、蓝牙(Bluetooth(注册商标))、陆上公用移动通信网(Public Land Mobile Network，PLMN)网络、设备到设备(Device-to-Device，D2D)系统、机器到机器(Machine to Machine，M2M)系统、物联网(Internet of Things，IoT)系统、车联网(Vehicle-to-Everything，V2X)、利用其他资源确定方法的系统、基于它们而扩展的下一代系统等。此外，也可以将多个系统组合(例如，LTE或者LTE-A与5G的组合等)应用。
图2是根据本公开实施例示出的资源确定方法、信号接收方法的交互示意图。如图2所示，上述方法包括：
步骤201，第一终端101确定发送边链路定位参考信号SL-PRS所占用的连续符号数。
其中，第一终端例如SL-PRS的发送端。对于sidelink上的定位参考信号PRS(即SL-PRS)，其可以与sidelink通信(或sidelink数据)共享资源池；可以理解的是，共享资源池例如分享资源池。资源池中包括用于sidelink通信时发送的时域资源集合以及频域资源集合。
在进行sidelink发送时，将sidelink数据与SL-PRS位于同一个时隙进行发送，sidelink数据例如物理边链路共享信道(physical sidelink control channel，PSSCH)。
例如，对于sidelink通信与SL-PRS共享的资源池，可以支持下述候选资源组合：Comb size 1,其中，(M,N)包括(1,2),(2,2),(2,4),(4,4)；以及支持comb size 1,comb size2,comb size4,且M>N的图样(pattern)；其中，N代表梳齿大小，M代表SL-PRS占用的符号(symbol)个数。作为第一示例，如图3所示，图3示出了Comb size(2,2)以及Comb size(4,4)的图样示意图。
其中，第一终端101确定用于发送(发送即transmit)SL-PRS所占用的连续符号数，连续符号数例如前述M。对于单个SL-PRS发送，所占用的symbol通常是连续的，且SL-PRS通常不与解调参考信号(demodulation reference signal，DMRS)使用相同的符号进行发送。
步骤202，第一终端101根据所述连续符号数，确定发送所述SL-PRS的候选资源中的可用资源和/或不可用资源。
其中，可用资源即资源池中可以发送SL-PRS的候选资源，不可用资源即不可用来发送SL-PRS的资源，便于后续进行不可用资源排除后和/或进行可用资源重选，使得候选资源中可用于发送SL-PRS的资源覆盖率更高，即使在配置了PSFCH的共享资源池内，也能进行SL-PRS的发送，进而提升定位性能，同时不影响使用PSFCH进行混合自动重传请求(Hybrid Automatic Repeat ReQuest，HARQ)-ACK的反馈性能。
在一些实施例中，所述根据所述连续符号数，确定发送所述SL-PRS的候选资源中的可用资源或不可用资源，包括以下至少一种：
步骤2021，根据所述连续符号数，确定所述候选资源中的可用资源；
步骤2022，根据所述连续符号数，确定所述候选资源的不可用资源。
第一终端101根据连续符号数，确定资源池中的可用资源，便于后续在可用资源中发送SL-PRS；或者，第一终端101还可以根据连续符号数，确定资源池中的不可用资源，通过排除不可用资源进而确定可用资源，以实现在可用资源中发送SL-PRS，避免出现SL-PRS发送失败的情况。
在一些实施例中，所述可用资源包括以下至少一种：
满足第一条件的第一时隙、满足所述第一条件的第二时隙；
本公开实施例中，所述第一时隙包括：不包括物理边链路反馈信道PSFCH的时隙；所述第二时隙包括：包括PSFCH的时隙。可以理解的是，本公开实施例中，第一条件可以是预先设定的，即“第一预设条件”。
具体地，对于第一时隙而言，其不包含PSFCH，可能可以发送长度(长度即连续符号数)为M的SL-PRS。而对于包含PSFCH的第二时隙其可能不能发送对应长度为M的SL-PRS，原因是如果发送了PSFCH，则需要额外占用：一个保护时间间隔(guard period,GP)symbol，一个自动增益控制(automatic gain control，AGC)symbol，以及另一个symbol用于实际的PSFCH发送，共3个symbol。作为第二示例，如图4所示，对于comb size(4,4)的SL-PRS，第一时隙(slot2)可以发送；而第二时隙(slot13)由于包含PSFCH，则无法发送SL-PRS。
而本公开实施例中，可用资源包括满足第一条件的第一时隙和/或第二时隙，可基于可用资源行资源重选，选择满足第一条件的第一时隙和/或满足所述第一条件的第二时隙。
具体地，在一些实施例中，所述第一条件包括：
在该时隙内的第二阶边链路控制信息SCI之后，存在至少所述连续符号数个第一符号，所述第一符号可用于发送PSSCH，且所述第一符号不包括解调参考信号DMRS符号。
也就是说，对于第一时隙和/或第二时隙，在该时隙内的第二阶边链路控制信息(2nd sidelink control information，2nd SCI)之后，若该时隙仍然存在至少所述连续符号数(以M为例)个第一符号可用于发送PSSCH，并且第一符号不包括DMRS符号，则该时隙满足第一条件。
具体地，第二阶SCI即第二阶段SCI。SCI可以包括第一阶SCI(1st SCI)以及第二阶SCI(2nd-CSI)。其中，1st SCI具体可以通过PSCCH来承载，并且可以包含下述消息至少之一：优先级指示信息、PSSCH的时频资源指示信息和调制与编码策略(Modulation and Coding Scheme，MCS)指示信息等；2nd-CSI表示第二阶SCI，其具体使用的是PSSCH的资源或者部分资源，并且可以包含例如下述消息至少之一：层1的source(源)ID、destination(目的地)ID、HARQ process(处理)指示信息、PSFCH资源指示信息等。
具体地，终端在解码(decoding)数据之前需要先解码2nd SCI，获得终端ID、HARQ进程ID、冗余版本(Redundancy Version)、强制类型转换(Cast type)等关键信息，用于解码后续的PSSCH数据。也就是说，终端需要解码2nd SCI之后才能获得SL-PRS所占用的symbol，从而对SL-PRS进行解码；且第二阶SCI所占用的资源和SL-PRS资源需要时分复用，因此，在第二阶SCI结束的symbol之后，第一终端101才能发送SL-PRS。在该时隙内的第二阶SCI之后，若不包括DMRS符号且可以发送PSSCH的符号数大于或等于M，则该时隙满足第一条件，可以作为发送SL-PRS的资源，保证SCI正常进行以及DMRS正常传输。
作为第三示例，如图5所示的第一时隙，在M为4的情况下，且在第二阶SCI结束后，可以用来发送SL-PRS的符号包括符号4至符号10，连续符号数目大于4，则满足第一条件，则该时隙可用来发送SL-PRS。同理，如图6所示的第二时隙，在M为4的情况下，且在第二阶SCI结束后，可以用来发送SL-PRS的符号包括符号3至符号7，连续符号数目大于4，则满足第一条件，则该时隙可用来发送SL-PRS。
在一些实施例中，所述不可用资源包括以下至少一种：
不满足所述第一条件的所述第一时隙、不满足所述第一条件的所述第二时隙。
其中，不满足所述第一条件的所述第一时隙、第二时隙不能用来发送SL-PRS，例如如图4中的slot13，在第二阶SCI结束后，可以用来发送SL-PRS的符号的连续符号数目小于M，则无法用来发送SL-PRS。
在一些实施例中，所述第一条件还包括：
除所述第一符号之外的剩余符号中，可用于用于发送PSSCH的第二符号的数目大于或等于预设数值。
为了保证PSSCH能完整发送，在该时隙内，除所述第一符号之外的剩余符号中，剩余的用于发送PSSCH的symbol个数大于或等于预设数值，例如，预设数值可以设定为发送PSSCH的最小symbol个数，以确保PSSCH仍能正常传输。
在一些实施例中，所述SL-PRS为周期性发送，且部分周期对应的时隙包括所述PSFCH；
在包括所述PSFCH的周期对应的时隙内，对所述SL-PRS执行静默操作；
和/或
在包括所述PSFCH的周期对应的时隙内，执行资源重选，选择满足第一条件的第一时隙和/或满足所述第一条件的第二时隙发送所述SL-PRS。
其中，如果当前发送是周期(periodic)SL-PRS，且多个周期中，部分周期对应的slot包含PSFCH，则第一终端101可以在包括所述PSFCH的周期对应的时隙内，对所述SL-PRS执行静默操作(muting)，静默操作即不发送SL-PRS，以避免包含PSFCH的周期对应的时隙可能会造成SL-PRS无法发送。
此外，第一终端101还可以在包括所述PSFCH的周期对应的时隙内，执行资源重选(resource reselection)，选择满足第一条件的第一时隙和/或满足所述第一条件的第二时隙发送所述SL-PRS，或者直接选择不包含PSFCH的周期对应的时隙进行当前周期的Sidelink发送，以实现SL-PRS的发送。
在一些实施例中，若所述连续符号数满足第二条件，所述第二条件包括以下至少一项：
所述连续符号数在资源池(resource pool)中未被预配置；
所述连续符号数在资源池中被预配置了至少两种数值，例如M＝2或4；
未接收到高层(higher layer)通知的所述连续符号数，例如第一终端101内的高层(高层例如在物理层和MAC层之上的层级)未通知M的数值；
接收到高层通知的至少两种所述连续符号数，例如第一终端101内的高层通知了多个数值，例如M＝2或4；
所传输业务的优先级低于优先级阈值，即所传输业务的优先级较低。可以理解的是，本公开实施例中，优先级阈值可以是预先设定的，即“预设优先级阈值”。
在一些实施例中，所述连续符号数满足第二条件，确定所述可用资源包括以下至少一项：
所述第一时隙对应的可用资源所发送的所述SL-PRS的连续符号数为第一数值，例如，对于不包含PSFCH的slot发送(M,N)＝(4,4)的SL-PRS；
所述第二时隙对应的可用资源所发送的所述SL-PRS的连续符号数为第二数值：所述第二数值小于或等于所述第一数值；例如，对于不包含PSFCH的slot发送(M,N)＝(4,4)的SL-PRS；对于包含PSFCH的slot发送(M,N)＝(2,2)的SL-PRS；
周期性发送的所述SL-PRS，包括所述PSFCH的周期对应的可用资源所发送的所述SL-PRS的连续符号数为第三数值；所述第三数值小于或等于所述第二数值，对于周期性发送的所述SL-PRS，可以不需要进行muting或者资源重选，在所在周期对应的slot进行M较小的发送，例如，对于包括所述PSFCH的周期，确定该周期对应的可用资源的连续符号数为2或1。作为第四示例，如图7所示，在第二阶SCI结束后，可以用来发送SL-PRS的符号包括符号6至符号7，在M为4的情况下，该时隙不满足第一条件，无法发送SL-PRS；而在M降到2之后，该时隙满足第一条件，可以发送SL-PRS。这样，对于连续符号数满足第二条件的可用资源，后续在发送SL-PRS时，可调整发送的连续符号数，例如，降低连续符号数，使得更多的资源可用于发送SL-PRS，以提升资源利用率。
可以理解的是，本公开实施例中，第二条件可以是预先设定的，即“第二预设条件”。
在一些实施例中，确定发送所述SL-PRS的候选资源中的可用资源和/或不可用资源，包括以下至少一项：
步骤2023，物理层功能实体排除所述不可用资源，并形成第一候选资源集合，将所述第一候选资源集合发送至介质访问控制层(Media Access Control，MAC)；
步骤2024，MAC层功能实体选择物理层上报的第二候选资源集合中的所述可用资源。
其中，步骤2021，在确定资源的过程中，可以由第一终端101的物理层功能实体执行，物理层功能实体排除所述不可用资源；形成第一候选资源集合(即更新后的SA)，并将第一候选资源集合上报给MAC层。
作为第五示例，如图8所示，物理层功能实体在对选择窗内的候选资源初始化时，分别排除不可用时隙slot3、slot7、slot10。
步骤2022，第一终端101的MAC层功能实体选择物理层上报的一个或多个第二候选资源集合中的所述可用资源，用于Sidelink的PSCCH/PSSCH发送；其中，第二候选资源集合可以是物理层功能实体执行资源排除后的，也可以是未执行资源排除的，本公开实施例在此不做限定。
在一些实施例中，步骤2023包括：
物理层功能实体在对选择窗内的候选资源初始化时，排除所述不可用资源，以及排除目标资源，并形成第一候选资源集合；
或
物理层功能实体对选择窗内的候选资源初始化以及排除目标资源，形成第三候选资源集合；排除所述第三候选资源集合中的不可用资源，并形成第一候选资源集合；
其中，所述目标资源包括以下至少一种：
未监听时隙对应的资源、与其它UE预留的资源发生重叠且参考信号接收功率RSRP大于预设RSRP阈值的资源。
其中，物理层功能实体在排除不可用资源时，可以在对候选资源初始化时排除，并排除目标资 源，目标资源例如监听时隙对应的资源、与其它UE预留的资源发生重叠且参考信号接收功率(Reference Signal Receiving Power，RSRP)大于门限的资源，目标资源也无法用于发送SL-PRS。在完成不可用资源以及目标资源的排除之后，形成形成第一候选资源集合SA，并发送至MAC层功能实体。
物理层功能实体还可以首先进行候选资源初始化以及排除目标资源，形成第三候选资源集合；再对第三候选资源集合排除所述不可用资源，最后形成第一候选资源集合发送至MAC层功能实体。
在上述实施例中，物理层功能实体可以将不可用资源的排除在初始化时进行，也可以在初始化后进行；通过排除不可用资源进而缩小可用资源的选择范围，提升资源选择的效率。
步骤203，在所述候选资源中的可用资源内，向接收端发送所述SL-PRS。
步骤204，第二终端102接收第一终端101发送的边链路定位参考信号SL-PRS。
本公开实施例中，第一终端101在所述候选资源中的可用资源内，向接收端(第二终端102)发送所述SL-PRS，基于物理层进行不可用资源排除后和/或MAC层进行资源重选后的候选资源，其可用于发送SL-PRS的资源覆盖率更高，即使在配置了PSFCH的共享资源池内，也能进行SL-PRS的发送，进而提升定位性能，同时不影响使用PSFCH进行HARQ-ACK的反馈性能。本公开实施例提供可一种选择用于发送SL-PRS的资源的方式，以进一步完善sidelink positioning技术。
在一些实施例中，信息等的名称不限定于实施例中所记载的名称，“信息(information)”、“消息(message)”、“信号(signal)”、“信令(signaling)”、“报告(report)”、“配置(configuration)”、“指示(indication)”、“指令(instruction)”、“命令(command)”、“信道”、“参数(parameter)”、“域”、“字段”、“符号(symbol)”、“码元(symbol)”、“码本(codebook)”、“码字(codeword)”、“码点(codepoint)”、“比特(bit)”、“数据(data)”、“程序(program)”、“码片(chip)”等术语可以相互替换。
在一些实施例中，“码本”、“码字”、“预编码矩阵”等术语可以相互替换。例如，码本可以是一个或多个码字/预编码矩阵的合集。
在一些实施例中，“上行”、“上行链路”、“物理上行链路”等术语可以相互替换，“下行”、“下行链路”、“物理下行链路”等术语可以相互替换，“侧行(side)”、“侧行链路(sidelink)”、“侧行通信”、“侧行链路通信”、“直连”、“边链路”、“直连通信”、“边链路通信”等术语可以相互替换。
在一些实施例中，“下行链路控制信息(downlink control information，DCI)”、“下行链路(downlink，DL)分配(assignment)”、“DL DCI”、“上行链路(uplink，UL)许可(grant)”、“UL DCI”等术语可以相互替换。
在一些实施例中，“物理下行链路共享信道(physical downlink shared channel，PDSCH)”、“DL数据”等术语可以相互替换，“物理上行链路共享信道(physical uplink shared channel，PUSCH)”、“UL数据”等术语可以相互替换。
在一些实施例中，“无线(radio)”、“无线(wireless)”、“无线接入网(radio access network，RAN)”、“接入网(access network，AN)”、“基于RAN的(RAN-based)”等术语可以相互替换。
在一些实施例中，“搜索空间(search space)”、“搜索空间集(search space set)”、“搜索空间配置(search space configuration)”、“搜索空间集配置(search space set configuration)”、“控制资源集(control resource set，CORESET)”、“CORESET配置”等术语可以相互替换。
在一些实施例中，“同步信号(synchronization signal，SS)”、“同步信号块(synchronization signal block，SSB)”、“参考信号(reference signal，RS)”、“导频(pilot)”、“导频信号(pilot signal)”等术语可以相互替换。
在一些实施例中，“时刻”、“时间点”、“时间”、“时间位置”等术语可以相互替换，“时长”、“时段”、“时间窗口”、“窗口”、“时间”等术语可以相互替换。
在一些实施例中，“分量载波(component carrier，CC)”、“小区(cell)”、“频率载波(frequency carrier)”、“载波频率(carrier frequency)”等术语可以相互替换。
在一些实施例中，“资源块(resource block，RB)”、“物理资源块(physical resource block，PRB)”、“子载波组(sub-carrier group，SCG)”、“资源元素组(resource element group，REG)”、“PRB对”、“RB对”、“资源元素(resource element，RE)”、“子载波(sub-carrier)”等术语可以相互替换。
在一些实施例中，无线接入方案(wireless access scheme)、波形(waveform)等术语可以相互替换。
在一些实施例中，“预编码(precoding)”、“预编码器(precoder)”、“权重(weight)”、“预编 码权重(precoding weight)”、“准共址(quasi-co-location，QCL)”、“传输配置指示(transmission configuration indication，TCI)状态”、“空间关系(spatial relation)”、“空间域滤波器(spatial domain filter)”、“发送功率(transmission power)”、“相位旋转(phase rotation)”、“天线端口(antenna port)”、“天线端口组(antenna port group)”、“层(layer)”、“层数(the number of layers)”、“秩(rank)”、“资源(resource)”、“资源集(resource set)”、“资源组(resource group)”、“波束(beam)”、“波束宽度(beam width)”、“波束角度(beam angular degree)”、“天线(antenna)”、“天线元件(antenna element)”、“面板(panel)”等术语可以相互替换。
在一些实施例中，“帧(frame)”、“无线帧(radio frame)”、“子帧(subframe)”、“时隙(slot)”、“子时隙(sub-slot)”、“迷你时隙(mini-slot)”、“符号(symbol)”、“码元(symbol)”、“发送时间间隔(transmission time interval，TTI)”等术语可以相互替换。
在一些实施例中，“获取”、“获得”、“得到”、“接收”、“传输”、“双向传输”、“发送和/或接收”可以相互替换，其可以解释为从其他主体接收，从协议中获取，从高层获取，自身处理得到、自主实现等多种含义。
在一些实施例中，“发送”、“发射”、“上报”、“下发”、“传输”、“双向传输”、“发送和/或接收”等术语可以相互替换。
在一些实施例中，“特定(certain)”、“预定(preseted)”、“预设”、“设定”、“指示(indicated)”、“某一”、“任意”、“第一”等术语可以相互替换，“特定A”、“预定A”、“预设A”、“设定A”、“指示A”、“某一A”、“任意A”、“第一A”可以解释为在协议等中预先规定的A，也可以解释为通过设定、配置、或指示等得到的A，也可以解释为特定A、某一A、任意A、或第一A等，但不限于此。
在一些实施例中，判定或判断可以通过以1比特表示的值(0或1)来进行，也可以通过以真(true)或者假(false)表示的真假值(布尔值(boolean))来进行，也可以通过数值的比较(例如，与预定值的比较)来进行，但不限于此。
在一些实施例中，“不期待接收”可以解释为不在时域资源和/或频域资源上接收，也可以解释为在接收到数据等后，不对该数据等执行后续处理；“不期待发送”可以解释为不发送，也可以解释为发送但是不期待接收方对发送的内容做出响应。
本公开实施例所涉及的资源确定方法可以包括前述步骤以及实施例中的至少一者。例如，步骤201可以作为独立实施例来实施，步骤202可以作为独立实施例来实施；步骤201与步骤203的结合可以作为独立实施例来实施，步骤202与步骤203的结合可以作为独立实施例来实施，但不限于此。
在一些实施例中，步骤2021、步骤2022可以交换顺序或同时执行，步骤2023、步骤2024可以交换顺序或同时执行。
在一些实施例中，步骤2021、步骤2022是可选的，在不同实施例中可以对这些步骤中的一个或多个步骤进行省略或替代。
在一些实施例中，步骤步骤2023、步骤2024是可选的，在不同实施例中可以对这些步骤中的一个或多个步骤进行省略或替代。
在一些实施例中，可参见图2所对应的说明书之前或之后记载的其他可选实现方式。
图9是根据本公开实施例示出的资源确定方法的流程示意图。
如图9所示，上述方法可应用于第一终端101，上述方法包括：
步骤901，确定发送边链路定位参考信号SL-PRS所占用的连续符号数；
步骤902，根据所述连续符号数，确定(用于)发送所述SL-PRS的候选资源中的可用资源和/或不可用资源。
步骤901的可选实现方式可以参见图2的步骤S201的可选实现方式、及图2所涉及的实施例中其他关联部分，此处不再赘述。
在一些实施例中，第一终端101所述根据所述连续符号数，确定发送所述SL-PRS的候选资源中的可用资源或不可用资源，包括以下至少一种：
步骤9021，根据所述连续符号数，确定所述候选资源中的可用资源；
步骤9022，根据所述连续符号数，确定所述候选资源的不可用资源。
可选地，本公开实施例中，所述可用资源包括以下至少一种：
满足第一条件的第一时隙、满足所述第一条件的第二时隙；
其中，所述第一时隙包括：不包括物理边链路反馈信道PSFCH的时隙；所述第二时隙包括：包括PSFCH的时隙；
和/或
所述不可用资源包括以下至少一种：
不满足所述第一条件的所述第一时隙、不满足所述第一条件的所述第二时隙。
可选地，本公开实施例中，所述第一条件包括：
在该时隙内的第二阶边链路控制信息SCI之后，存在至少所述连续符号数个第一符号，所述第一符号可用于发送PSSCH，且所述第一符号不包括解调参考信号DMRS符号。
可选地，本公开实施例中，所述第一条件还包括：
除所述第一符号之后的剩余符号中，可用于用于发送PSSCH的第二符号的数目大于或等于预设数值。
可选地，本公开实施例中，所述SL-PRS为周期性发送，且部分周期对应的时隙包括所述PSFCH；
在包括所述PSFCH的周期对应的时隙内，对所述SL-PRS执行静默操作；
和/或
在包括所述PSFCH的周期对应的时隙内，执行资源重选，选择满足第一条件的第一时隙和/或满足所述第一条件的第二时隙发送所述SL-PRS。
可选地，本公开实施例中，第一终端101根据所述连续符号数，确定所述候选资源中的可用资源，包括：
所述连续符号数满足第二条件，确定所述可用资源包括以下至少一项：
所述第一时隙对应的可用资源所发送的所述SL-PRS的连续符号数为第一数值；
所述第二时隙对应的可用资源所发送的所述SL-PRS的连续符号数为第二数值：所述第二数值小于或等于所述第一数值；
周期性发送的所述SL-PRS，包括所述PSFCH的周期对应的可用资源所发送的所述SL-PRS的连续符号数为第三数值；所述第三数值小于或等于所述第二数值。
可选地，本公开实施例中，所述第二条件包括以下至少一项：
所述连续符号数在资源池中未被预配置；
所述连续符号数在资源池中被预配置了至少两种数值；
未接收到高层通知的所述连续符号数；
接收到高层通知的至少两种所述连续符号数；
所传输业务的优先级低于优先级阈值。
可选地，本公开实施例中，第一终端101所述根据所述连续符号数，确定发送所述SL-PRS的候选资源中的可用资源和/或不可用资源，包括以下至少一项：
步骤9023，物理层功能实体排除所述不可用资源，并形成第一候选资源集合，将所述第一候选资源集合发送至MAC层；
步骤9024，MAC层功能实体选择物理层上报的第二候选资源集合中的所述可用资源。
可选地，本公开实施例中，第一终端101所述物理层功能实体排除所述不可用资源，并形成第一候选资源集合，包括：
物理层功能实体在对选择窗内的候选资源初始化时，排除所述不可用资源，以及排除目标资源，并形成第一候选资源集合；
或
物理层功能实体对选择窗内的候选资源初始化以及排除目标资源，形成第三候选资源集合；排除所述第三候选资源集合中的不可用资源，并形成第一候选资源集合；
其中，所述目标资源包括以下至少一种：
未监听时隙对应的资源、与其它UE预留的资源发生重叠且参考信号接收功率RSRP大于预设RSRP阈值的资源。
可选地，本公开实施例中，第一终端101所述根据所述连续符号数，确定发送所述SL-PRS的候选资源中的可用资源和/或不可用资源之后，第一终端101还执行：
在所述候选资源中的可用资源内，向接收端发送所述SL-PRS。
本公开实施例所涉及的资源确定方法可以包括前述步骤以及实施例中的至少一者。例如，步骤901可以作为独立实施例来实施，步骤902可以作为独立实施例来实施；步骤901与步骤902的结合可以作为独立实施例来实施，但不限于此。
在一些实施例中，步骤9021、步骤9022可以交换顺序或同时执行，步骤9023、步骤9024可以交换顺序或同时执行。
在一些实施例中，步骤9021、步骤9022是可选的，在不同实施例中可以对这些步骤中的一个或多个步骤进行省略或替代。
在一些实施例中，步骤步骤9023、步骤9024是可选的，在不同实施例中可以对这些步骤中的一个或多个步骤进行省略或替代。
在一些实施例中，可参见图9所对应的说明书之前或之后记载的其他可选实现方式。
图10是根据本公开实施例示出的信号接收方法的流程示意图。
如图10所示，上述方法可应用于第二终端102，上述方法包括：
步骤1001，接收发送端发送的边链路定位参考信号SL-PRS；
其中，所述SL-PRS为所述发送端在确定发送SL-PRS所占用的连续符号数，并根据所述连续符号数，确定发送所述SL-PRS的候选资源中的可用资源和/或不可用资源后，选择对应的可用资源发送的。
在一些实施例中，第二终端102接收发送端发送的SL-PRS，包括：
在所述候选资源中的可用资源中，接收所述SL-PRS；所述可用资源包括所述候选资源中，除所述不可用资源的资源。
可选地，本公开实施例中，所述可用资源包括以下至少一种：
满足第一条件的第一时隙、满足所述第一条件的第二时隙；
其中，所述第一时隙包括：不包括物理边链路反馈信道PSFCH的时隙；所述第二时隙包括：包括PSFCH的时隙；
和/或
所述不可用资源包括以下至少一种：
不满足所述第一条件的所述第一时隙、不满足所述第一条件的所述第二时隙。
可选地，本公开实施例中，所述第一条件包括：
在该时隙内的第二阶SCI之后，存在至少所述连续符号数个第一符号，所述第一符号可用于发送PSSCH，且所述第一符号不包括解调参考信号DMRS符号。
可选地，本公开实施例中，所述第一条件还包括：
除所述第一符号之外的剩余符号中，可用于用于发送PSSCH的第二符号的数目大于或等于预设数值。
可选地，本公开实施例中，所述连续符号数满足第二条件，所述可用资源包括以下至少一项：
所述第一时隙对应的可用资源所发送的所述SL-PRS的连续符号数为第一数值；
所述第二时隙对应的可用资源所发送的所述SL-PRS的连续符号数为第二数值：所述第二数值小于或等于所述第一数值；
周期性发送的所述SL-PRS，包括所述PSFCH的周期对应的可用资源所发送的所述SL-PRS的连续符号数为第三数值；所述第三数值小于或等于所述第二数值。
可选地，本公开实施例中，所述第二条件包括以下至少一项：
所述连续符号数在资源池中未被预配置；
所述连续符号数在资源池中被预配置了至少两种数值；
未接收到高层通知的所述连续符号数；
接收到高层通知的至少两种所述连续符号数；
所传输业务的优先级低于优先级阈值。
本公开实施例还提出用于实现以上任一方法的装置，例如，提出一装置，上述装置包括用以实现以上任一方法中终端所执行的各步骤的单元或模块。再如，还提出另一装置，包括用以实现以上任一方法中网络设备(例如接入网设备、核心网功能节点、核心网设备等)所执行的各步骤的单元或模块。
应理解以上装置中各单元或模块的划分仅是一种逻辑功能的划分，在实际实现时可以全部或部分集成到一个物理实体上，也可以物理上分开。此外，装置中的单元或模块可以以处理器调用软件的形式实现：例如装置包括处理器，处理器与存储器连接，存储器中存储有指令，处理器调用存储器中存储的指令，以实现以上任一方法或实现上述装置各单元或模块的功能，其中处理器例如为通用处理器，例如中央处理单元(Central Processing Unit，CPU)或微处理器，存储器为装置内的存储器或装置外的存储器。或者，装置中的单元或模块可以以硬件电路的形式实现，可以通过对硬件电路的设计实现部分或全部单元或模块的功能，上述硬件电路可以理解为一个或多个处理器；例如，在一种实现中，上述硬件电路为专用集成电路(application-specific integrated circuit，ASIC)，通过对电路内元件逻辑关系的设计，实现以上部分或全部单元或模块的功能；再如，在另一种实现中，上述硬件电路为可以通过可编程逻辑器件(programmable logic device，PLD)实现，以现场可编程门阵列(Field Programmable Gate Array，FPGA)为例，其可以包括大量逻辑门电路，通过配置文件来配置逻辑门电路之间的连接关系，从而实现以上部分或全部单元或模块的功能。以上装置的所有单元或模块可以全部通过处理器调用软件的形式实现，或全部通过硬件电路的形式实现，或部分通过处理器调用软件的形式实现，剩余部分通过硬件电路的形式实现。
在本公开实施例中，处理器是具有信号处理能力的电路，在一种实现中，处理器可以是具有指令读取与运行能力的电路，例如中央处理单元(Central Processing Unit，CPU)、微处理器、图形处理器(graphics processing unit，GPU)(可以理解为微处理器)、或数字信号处理器(digital signal processor，DSP)等；在另一种实现中，处理器可以通过硬件电路的逻辑关系实现一定功能，上述硬件电路的逻辑关系是固定的或可以重构的，例如处理器为专用集成电路(application-specific integrated circuit，ASIC)或可编程逻辑器件(programmable logic device，PLD)实现的硬件电路,例如FPGA。在可重构的硬件电路中，处理器加载配置文档，实现硬件电路配置的过程，可以理解为处理器加载指令，以实现以上部分或全部单元或模块的功能的过程。此外，还可以是针对人工智能设计的硬件电路，其可以理解为ASIC，例如神经网络处理单元(Neural Network Processing Unit，NPU)、张量处理单元(Tensor Processing Unit，TPU)、深度学习处理单元(Deep learning Processing Unit，DPU)等。
图11是本公开实施例提出的终端的结构示意图之一。如图11所示，终端110可以包括：符号确定模块1101、资源确定模块1102等中的至少一者。
在一些实施例中，上述符号确定模块1101，用于确定发送边链路定位参考信号SL-PRS所占用的连续符号数；资源确定模块1102，用于根据所述连续符号数，确定发送所述SL-PRS的候选资源中的可用资源和/或不可用资源。
可选地，上述资源确定模块1102用于执行以上任一方法中第一终端101执行的资源确定等通信步骤(例如步骤202、步骤2021、步骤2022、步骤2023、步骤2024，但不限于此)中的至少一者，此处不再赘述。
图12是本公开实施例提出的终端的结构示意图之二。如图12所示，终端120可以包括：接收模块1201。
在一些实施例中，上述接收模块1201，用于接收发送端发送的边链路定位参考信号SL-PRS；
其中，所述SL-PRS为所述发送端在确定发送SL-PRS所占用的连续符号数，并根据所述连续符号数，确定发送所述SL-PRS的候选资源中的可用资源和/或不可用资源后，选择对应的可用资源发送的。。
可选地，上述接收模块1201用于执行以上任一方法中第二终端102执行的资源确定等通信步骤(例如步骤1001，但不限于此)中的至少一者，此处不再赘述。
图13A是本公开实施例提出的终端1300(例如用户设备等)的结构示意图。终端1300可以是支持网络设备实现以上任一方法的芯片、芯片系统、或处理器等，还可以是支持终端实现以上任一 方法的芯片、芯片系统、或处理器等。终端1300可用于实现上述方法实施例中描述的方法，具体可以参见上述方法实施例中的说明。
如图13A所示，终端1300包括一个或多个处理器1301。处理器1301可以是通用处理器或者专用处理器等，例如可以是基带处理器或中央处理器。基带处理器可以用于对通信协议以及通信数据进行处理，中央处理器可以用于对通信装置(如，基站、基带芯片，终端设备、终端设备芯片，DU或CU等)进行控制，执行程序，处理程序的数据。终端1300用于执行以上任一方法。
在一些实施例中，终端1300还包括用于存储指令的一个或多个存储器1302。可选地，全部或部分存储器1302也可以处于终端1300之外。
在一些实施例中，终端1300还包括一个或多个收发器1304。在终端1300包括一个或多个收发器1304时，收发器1304执行上述方法中的发送和/或接收等通信步骤(例如步骤203，步骤204、步骤1001、但不限于此)中的至少一者，处理器1301执行其他步骤(例如步骤201、步骤202、步骤901、步骤902、步骤2021、步骤2022、步骤2023、步骤2024，步骤9021、步骤9022、步骤9023、步骤9024但不限于此)中的至少一者。
在一些实施例中，收发器可以包括接收器和/或发送器，接收器和发送器可以是分离的，也可以集成在一起。可选地，收发器、收发单元、收发机、收发电路等术语可以相互替换，发送器、发送单元、发送机、发送电路等术语可以相互替换，接收器、接收单元、接收机、接收电路等术语可以相互替换。
在一些实施例中，终端1300可以包括一个或多个接口电路1303。可选地，接口电路1303与存储器1302连接，接口电路1303可用于从存储器1302或其他装置接收信号，可用于向存储器1302或其他装置发送信号。例如，接口电路1303可读取存储器1302中存储的指令，并将该指令发送给处理器1301。
以上实施例描述中的终端1300可以是用户设备等通信设备，但本公开中描述的终端1300的范围并不限于此，终端1300的结构可以不受图13A的限制。通信设备可以是独立的设备或者可以是较大设备的一部分。例如所述通信设备可以是：(1)独立的集成电路IC，或芯片，或，芯片系统或子系统；(2)具有一个或多个IC的集合，可选地，上述IC集合也可以包括用于存储数据，程序的存储部件；(3)ASIC，例如调制解调器(Modem)；(4)可嵌入在其他设备内的模块；(5)接收机、终端设备、智能终端设备、蜂窝电话、无线设备、手持机、移动单元、车载设备、网络设备、云设备、人工智能设备等等；(6)其他等等。
图13B是本公开实施例提出的芯片1310的结构示意图。对于终端1300可以是芯片或芯片系统的情况，可以参见图13B所示的芯片1310的结构示意图，但不限于此。
芯片1310包括一个或多个处理器1311，芯片1310用于执行以上任一方法。
在一些实施例中，芯片1310还包括一个或多个1313。可选地，接口电路1313与存储器1312连接，接口电路1313可以用于从存储器1312或其他装置接收信号，接口电路1313可用于向存储器1312或其他装置发送信号。例如，接口电路1313可读取存储器1312中存储的指令，并将该指令发送给处理器1311。
在一些实施例中，接口电路1313执行上述方法中的发送和/或接收等通信步骤(例如步骤203，步骤204、步骤1001、但不限于此)中的至少一者，处理器1311执行其他步骤(例如步骤201、步骤202、步骤901、步骤902、步骤2021、步骤2022、步骤2023、步骤2024，步骤9021、步骤9022、步骤9023、步骤9024但不限于此)中的至少一者。
在一些实施例中，接口电路、接口、收发管脚、收发器等术语可以相互替换。
在一些实施例中，芯片1310还包括用于存储指令的一个或多个存储器1312。可选地，全部或部分存储器1312可以处于芯片1310之外。
本公开还提出存储介质，上述存储介质上存储有指令，当上述指令在终端1300上运行时，使得终端1300执行以上任一方法。可选地，上述存储介质是电子存储介质。可选地，上述存储介质是计算机可读存储介质，但不限于此，其也可以是其他装置可读的存储介质。可选地，上述存储介质可以是非暂时性(non-transitory)存储介质，但不限于此，其也可以是暂时性存储介质。
本公开还提出程序产品，上述程序产品被终端1300执行时，使得终端1300执行以上任一方法。可选地，上述程序产品是计算机程序产品。
本公开还提出计算机程序，当其在计算机上运行时，使得计算机执行以上任一方法。

Claims (24)

  1. 一种资源确定方法，其特征在于，所述方法包括：
    确定发送边链路定位参考信号SL-PRS所占用的连续符号数；
    根据所述连续符号数，确定发送所述SL-PRS的候选资源中的可用资源和/或不可用资源。
  2. 根据权利要求1所述的资源确定方法，其特征在于，所述根据所述连续符号数，确定发送所述SL-PRS的候选资源中的可用资源或不可用资源，包括以下至少一种：
    根据所述连续符号数，确定所述候选资源中的可用资源；
    根据所述连续符号数，确定所述候选资源的不可用资源。
  3. 根据权利要求2所述的资源确定方法，其特征在于，所述可用资源包括以下至少一种：
    满足第一条件的第一时隙、满足所述第一条件的第二时隙；
    其中，所述第一时隙包括：不包括物理边链路反馈信道PSFCH的时隙；所述第二时隙包括：包括PSFCH的时隙；
    和/或，
    所述不可用资源包括以下至少一种：
    不满足所述第一条件的所述第一时隙、不满足所述第一条件的所述第二时隙。
  4. 根据权利要求3所述的资源确定方法，其特征在于，所述第一条件包括：
    在该时隙内的第二阶边链路控制信息SCI之后，存在至少所述连续符号数个第一符号，所述第一符号可用于发送PSSCH，且所述第一符号不包括解调参考信号DMRS符号。
  5. 根据权利要求4所述的资源确定方法，其特征在于，所述第一条件还包括：
    除所述第一符号之外的剩余符号中，可用于用于发送PSSCH的第二符号的数目大于或等于预设数值。
  6. 根据权利要求2至5中任一项所述的资源确定方法，其特征在于，所述SL-PRS为周期性地发送，且部分周期对应的时隙包括PSFCH；
    在包括所述PSFCH的周期对应的时隙内，对所述SL-PRS执行静默操作；
    和/或
    在包括所述PSFCH的周期对应的时隙内，执行资源重选，选择满足第一条件的第一时隙和/或满足所述第一条件的第二时隙发送所述SL-PRS。
  7. 根据权利要求3至5中任一项所述的资源确定方法，其特征在于，所述根据所述连续符号数，确定所述候选资源中的可用资源，包括：
    所述连续符号数满足第二条件，确定所述可用资源包括以下至少一项：
    所述第一时隙对应的可用资源所发送的所述SL-PRS的连续符号数为第一数值；
    所述第二时隙对应的可用资源所发送的所述SL-PRS的连续符号数为第二数值：所述第二数值小于或等于所述第一数值；
    周期性发送的所述SL-PRS，包括所述PSFCH的周期对应的可用资源所发送的所述SL-PRS的连续符号数为第三数值；所述第三数值小于或等于所述第二数值。
  8. 根据权利要求7所述的资源确定方法，其特征在于，所述第二条件包括以下至少一项：
    所述连续符号数在资源池中未被预配置；
    所述连续符号数在资源池中被预配置了至少两种数值；
    未接收到高层通知的所述连续符号数；
    接收到高层通知的至少两种所述连续符号数；
    所传输业务的优先级低于优先级阈值。
  9. 根据权利要求1所述的资源确定方法，其特征在于，所述根据所述连续符号数，确定发送所述SL-PRS的候选资源中的可用资源和/或不可用资源，包括以下至少一项：
    物理层功能实体排除所述不可用资源，并形成第一候选资源集合，将所述第一候选资源集合发送至MAC层；
    MAC层功能实体选择物理层上报的第二候选资源集合中的所述可用资源。
  10. 根据权利要求9所述的资源确定方法，其特征在于，所述物理层功能实体排除所述不可用资源，并形成第一候选资源集合，包括：
    物理层功能实体在对选择窗内的候选资源初始化时，排除所述不可用资源，以及排除目标资源，并形成第一候选资源集合；
    或
    物理层功能实体对选择窗内的候选资源初始化以及排除目标资源，形成第三候选资源集合；排除所述第三候选资源集合中的不可用资源，并形成第一候选资源集合；
    其中，所述目标资源包括以下至少一种：
    未监听时隙对应的资源、与其它UE预留的资源发生重叠且参考信号接收功率RSRP大于预设RSRP阈值的资源。
  11. 根据权利要求1所述的资源确定方法，其特征在于，所述根据所述连续符号数，确定发送所述SL-PRS的候选资源中的可用资源和/或不可用资源之后，所述方法还包括：
    在所述候选资源中的可用资源内，向接收端发送所述SL-PRS。
  12. 一种信号接收方法，其特征在于，所述方法包括：
    接收发送端发送的边链路定位参考信号SL-PRS；
    其中，所述SL-PRS为所述发送端在确定发送SL-PRS所占用的连续符号数，并根据所述连续符号数，确定发送所述SL-PRS的候选资源中的可用资源和/或不可用资源后，选择对应的可用资源发送的。
  13. 根据权利要求12所述的信号接收方法，其特征在于，所述接收发送端发送的SL-PRS，包括：
    在所述候选资源中的可用资源中，接收所述SL-PRS；所述可用资源包括所述候选资源中，除所述不可用资源的资源。
  14. 根据权利要求13所述的信号接收方法，其特征在于，所述可用资源包括以下至少一种：
    满足第一条件的第一时隙、满足所述第一条件的第二时隙；
    其中，所述第一时隙包括：不包括物理边链路反馈信道PSFCH的时隙；所述第二时隙包括：包括PSFCH的时隙；
    和/或
    所述不可用资源包括以下至少一种：
    不满足所述第一条件的所述第一时隙、不满足所述第一条件的所述第二时隙。
  15. 根据权利要求14所述的信号接收方法，其特征在于，所述第一条件包括：
    在该时隙内的第二阶SCI之后，存在至少所述连续符号数个第一符号，所述第一符号可用于发送PSSCH，且所述第一符号不包括解调参考信号DMRS符号。
  16. 根据权利要求15所述的信号接收方法，其特征在于，所述第一条件还包括：
    除所述第一符号之外的剩余符号中，可用于用于发送PSSCH的第二符号的数目大于或等于预设数值。
  17. 根据权利要求14至16中任一项所述的信号接收方法，其特征在于，所述连续符号数满足第二条件，所述可用资源包括以下至少一项：
    所述第一时隙对应的可用资源所发送的所述SL-PRS的连续符号数为第一数值；
    所述第二时隙对应的可用资源所发送的所述SL-PRS的连续符号数为第二数值：所述第二数值小于或等于所述第一数值；
    周期性发送的所述SL-PRS，包括所述PSFCH的周期对应的可用资源所发送的所述SL-PRS的连续符号数为第三数值；所述第三数值小于或等于所述第二数值。
  18. 根据权利要求17所述的信号接收方法，其特征在于，所述第二条件包括以下至少一项：
    所述连续符号数在资源池中未被预配置；
    所述连续符号数在资源池中被预配置了至少两种数值；
    未接收到高层通知的所述连续符号数；
    接收到高层通知的至少两种所述连续符号数；
    所传输业务的优先级低于。
  19. 一种终端，其特征在于，所述终端包括：
    符号确定模块，用于确定发送边链路定位参考信号SL-PRS所占用的连续符号数；
    资源确定模块，用于根据所述连续符号数，确定发送所述SL-PRS的候选资源中的可用资源和/或不可用资源。
  20. 一种终端，其特征在于，所述终端包括：
    接收模块，用于接收发送端发送的边链路定位参考信号SL-PRS；
    其中，所述SL-PRS为所述发送端在确定发送SL-PRS所占用的连续符号数，并根据所述连续符号数，确定发送所述SL-PRS的候选资源中的可用资源和/或不可用资源后，选择对应的可用资源发送的。
  21. 一种终端，其特征在于，包括：
    一个或多个处理器；
    其中，所述终端用于执行权利要求1至11中任一项所述的资源确定方法。
  22. 一种终端，其特征在于，包括：
    一个或多个处理器；
    其中，所述终端用于执行权利要求12至18中任一项所述的信号接收方法。
  23. 一种通信系统，其特征在于，包括第一终端、第二终端；其中，所述第一终端被配置为实现权利要求1至11中任一项所述的资源确定方法，所述第二终端被配置为实现权利要求12至18中任一项所述的信号接收方法。
  24. 一种存储介质，所述存储介质存储有指令，其特征在于，当所述指令在通信设备上运行时，使得所述通信设备执行如权利要求1至11中任一项所述的资源确定方法，或执行如权利要求12至18中任一项所述的信号接收方法。
PCT/CN2023/103381 2023-06-28 2023-06-28 资源确定方法、信号接收方法、终端及通信系统 Pending WO2025000286A1 (zh)

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