[go: up one dir, main page]

WO2013004127A1 - Procédé et dispositif de transmission de données dans un système à agrégation de porteuses - Google Patents

Procédé et dispositif de transmission de données dans un système à agrégation de porteuses Download PDF

Info

Publication number
WO2013004127A1
WO2013004127A1 PCT/CN2012/077241 CN2012077241W WO2013004127A1 WO 2013004127 A1 WO2013004127 A1 WO 2013004127A1 CN 2012077241 W CN2012077241 W CN 2012077241W WO 2013004127 A1 WO2013004127 A1 WO 2013004127A1
Authority
WO
WIPO (PCT)
Prior art keywords
uplink
subframe
downlink
downlink transmission
terminal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2012/077241
Other languages
English (en)
Chinese (zh)
Inventor
林亚男
潘学明
沈祖康
丁昱
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.)
China Academy of Telecommunications Technology CATT
Original Assignee
China Academy of Telecommunications Technology CATT
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 China Academy of Telecommunications Technology CATT filed Critical China Academy of Telecommunications Technology CATT
Publication of WO2013004127A1 publication Critical patent/WO2013004127A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT the frequencies being arranged in component carriers
    • 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
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a data transmission method and device in a carrier aggregation system. Background technique
  • LTE Long Term Evolution
  • the peak rate of the system is much higher than that of the LTE system, requiring downlink lGbps and uplink 500 Mbps. If only one carrier with a maximum bandwidth of 20MHz is used, the peak rate requirement cannot be reached. Therefore, the LTE-A system needs to expand the bandwidth that the terminal can use, thereby introducing Carrier Aggregation (CA) technology, which is to aggregate multiple consecutive or discontinuous carriers under the same base station (eNodeB, eNB). At the same time, it serves the terminal (User Equipment, UE) to provide the required rate. These aggregated carrier forks are called component carriers (CCs).
  • CA Carrier Aggregation
  • Each cell can be a member carrier, and cells (member carriers) under different eNBs cannot be aggregated. In order to ensure that UEs of LTE can work under each aggregated carrier, each carrier does not exceed 20 MHz at most.
  • the CA technology of LTE-A is shown in Figure 2.
  • the LTE-A base station shown in Figure 2 has four carriers that can be aggregated.
  • the base station can perform data transmission with the UE on four carriers at the same time to improve system throughput.
  • Frequency Division Duplex (FDD) and Time Division Duplex (TDD) modes are one radio frame 10ms, one subframe lms.
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • 7 TDD uplink/downlink subframe configurations are defined, as shown in Table 1 below, where D stands for Downlink (DL) subframe and U stands for Uplink (UL).
  • Subframe, S represents a special subframe of the TDD system, for example, configuration 1 is DSUUDDSUUD.
  • TDD uplink/downlink subframe configuration In LTE Release 11 (Rel-11) or later systems, in order to avoid interference with other TDD systems, LTE cells located in different frequency bands (Band) may use different TDD uplink/downlink subframe configurations, as shown in Figure 3. .
  • Carrier 1 and carrier 2 are located in Band A
  • carrier 3 is located in Band B
  • cell 1 cell 2, and cell 3 are cells on carrier 1, carrier 2, and carrier 3, respectively.
  • the configuration of the TDD uplink/downlink subframes of the cell 1 and the cell 2 is the same as that of the configuration 1.
  • the configuration of the TDD uplink/downlink subframe of the cell 3 is different from that of the cell 1 and the cell 2. If the terminal wants to use these three cells for carrier aggregation, the TDD uplink and downlink configurations of all the aggregated cells of the terminal may be different.
  • one terminal can aggregate multiple bands, and different bands can support different TDD uplink/downlink subframe configurations, then the terminal generally uses different transceivers for different bands.
  • the embodiment of the invention provides a data transmission method and device in a carrier aggregation system, which is used to solve the problem of how the UE performs data transmission in a subframe in which the uplink and downlink transmission directions are uncertain.
  • a method for data transmission in a carrier aggregation system comprising:
  • the terminal determines whether to receive the uplink scheduling signaling sent by the base station for the subframe whose uplink and downlink transmission direction is uncertain; the terminal sends the uplink data or receives the downlink data by using the subframe with the uplink and downlink transmission direction uncertain according to the determination result.
  • a method for scheduling data transmission in a carrier aggregation system comprising:
  • the base station Before transmitting the downlink scheduling signaling of the subframe in which the uplink and downlink transmission directions are indeterminate, the base station determines whether to send the uplink scheduling signaling of the subframe in which the uplink and downlink transmission directions are uncertain;
  • the downlink scheduling of the subframe in which the uplink and downlink transmission directions are uncertain is prohibited from being sent in the subframe where the uplink and downlink transmission directions are uncertain. Signaling.
  • a terminal comprising:
  • a scheduling signaling determining unit configured to determine whether to receive uplink scheduling signaling sent by the base station for a subframe that is determined by an uplink and downlink transmission direction;
  • the signal transmission unit is configured to send uplink data or receive downlink data according to the determined result, using a subframe in which the uplink and downlink transmission directions are uncertain.
  • a base station comprising:
  • a determining unit configured to determine whether to send uplink scheduling signaling of a subframe that is indeterminate in the uplink and downlink transmission direction before transmitting, to the terminal, the downlink scheduling signaling of the subframe in which the uplink and downlink transmission directions are uncertain;
  • a processing unit configured to: when determining, sending uplink scheduling signaling of a subframe that is indeterminate for the uplink and downlink transmission direction, Scheduling signaling.
  • the terminal determines whether to receive the uplink scheduling signaling that is sent by the base station for the subframes whose uplink and downlink transmission directions are uncertain, and sends the subframes that are determined by the uplink and downlink transmission directions according to the determination result.
  • Uplink data or receive downlink data the terminal can determine, according to whether the uplink scheduling signaling is received, how to perform data transmission in the subframe with the uplink and downlink transmission direction uncertain, thereby solving the problem that the UE that cannot support simultaneous uplink and downlink transmission is uncertain in the uplink and downlink transmission directions. The problem of data transmission in the sub-frame.
  • FIG. 1 is a schematic diagram of carrier distribution of an LTE cell in the prior art
  • FIG. 2 is a schematic diagram of a CA in an LTE-A system in the prior art
  • FIG. 3 is a schematic diagram of different TDD uplink/downlink subframe configurations used by different bands of the LTE-A CA terminal in the prior art
  • FIG. 4 is a schematic flowchart of a method according to an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart of still another method according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic diagram of uplink scheduling of a subframe in which an uplink and downlink transmission direction is indeterminate according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a device according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of another device according to an embodiment of the present invention.
  • the embodiment of the present invention provides a data transmission method in a carrier aggregation system.
  • the terminal determines how to perform uplink scheduling signaling according to the method.
  • Data transmission is performed in subframes whose uplink and downlink transmission directions are uncertain.
  • the UL grant is always sent in advance. For example, if the UL grant in the LTE system is to be sent at least 4 ms in advance, the UE can dynamically determine the subframes whose uplink and downlink transmission directions are uncertain before the arrival of the subframes whose uplink and downlink transmission directions are uncertain. The direction of transmission.
  • a subframe in which the uplink and downlink transmission directions are indeterminate refers to a subframe in which there is no pre-configured or agreed transmission direction in the uplink and downlink overlapping subframes.
  • the uplink and downlink overlapping subframes are: when the terminal aggregates multiple frequency bands and different frequency bands support different TDD uplink/downlink subframe configurations, if the transmission directions on different carriers in a certain subframe are inconsistent, the subframe is an uplink and downlink overlap subframe. frame.
  • the uplink and downlink overlapping subframes that may appear in the LTE-A system include subframe 3, subframe 4, subframe 6, subframe 7, subframe 8, and subframe 9.
  • a method for data transmission in a carrier aggregation system includes the following steps: Step 40: The terminal determines whether an uplink scheduling signal sent by a base station for a subframe in which an uplink and downlink transmission direction is uncertain is received. Order (UL grant);
  • Step 41 The terminal sends uplink data or receives downlink data according to the determined result, using a subframe in which the uplink and downlink transmission directions are uncertain.
  • the terminal receives the uplink scheduling signaling sent by the base station for the subframe in which the uplink and downlink transmission directions are indeterminate, the terminal corresponds to the uplink transmission carrier in the subframe where the uplink and downlink transmission directions are uncertain.
  • a Physical Uplink Shared CHannel (PUSCH) is transmitted. Otherwise, the terminal detects a Physical Downlink Control CHannel (PDCCH) and/or a receiving physics on a carrier corresponding to the downlink transmission in the uplink and downlink overlapping subframe.
  • the downlink shared channel Physical Downlink Shared CHannel, PDSCH).
  • the terminal detects the PDCCH and/or receives the PDSCH on the carrier corresponding to the downlink transmission in each subframe in which the uplink and downlink transmission directions are uncertain;
  • the terminal receives the uplink scheduling signaling sent by the base station for the subframe in which the uplink and downlink transmission directions are indeterminate for at least one of the consecutive N uplink and downlink transmission directions, the terminal is not in the N subframes. Detecting a PDCCH and/or receiving a PDSCH in a critical subframe in a subframe in which the uplink and downlink transmission directions are indeterminate, and a subframe in the subframe before the critical subframe, and detecting a carrier on a downlink transmission in a subframe subsequent to the critical subframe PDCCH and/or receiving PDSCH; transmitting a PUSCH on a carrier corresponding to an uplink transmission in a subframe in which a corresponding uplink scheduling signaling is received in a subframe in which the uplink and downlink transmission directions are indeterminate; the critical subframe is the latest a subframe in which the uplink and downlink transmission directions corresponding to the received uplink scheduling signaling are indeterminate; the N is a positive integer.
  • the terminal if the terminal receives the uplink scheduling signaling that is sent by the base station for the subframe in which the uplink and downlink transmission directions are indeterminate, and does not receive the base station, The downlink scheduling signaling sent by the subframe in which the uplink and downlink transmission directions are indeterminate, the terminal sends the PUSCH on the carrier corresponding to the uplink transmission in the subframe in which the uplink and downlink transmission directions are uncertain;
  • the terminal If the terminal receives the downlink scheduling signaling that is sent by the base station for the subframe in which the uplink and downlink transmission directions are indeterminate, and the base station does not receive the uplink and downlink transmission direction, the terminal does not receive the uplink and downlink transmission direction.
  • the uplink scheduling signaling sent by the subframe the terminal detects the PDCCH and/or receives the PDSCH on the carrier corresponding to the downlink transmission in the subframe in which the uplink and downlink transmission directions are uncertain;
  • the subframe is a blank subframe.
  • the terminal does not detect the PDCCH and/or the PDSCH in the subframe in which the uplink and downlink transmission directions are uncertain, and does not send the PUSCH in the subframe in which the uplink and downlink transmission directions are not determined;
  • the terminal receives the downlink scheduling signaling and the uplink scheduling signaling that are sent by the base station for the subframe in which the uplink and downlink transmission directions are indeterminate, the terminal follows the preset subframe. a method for determining a transmission direction, determining a transmission direction of the subframe in which the uplink and downlink transmission directions are indeterminate, and if the transmission direction is uplink, transmitting a PUSCH on a carrier corresponding to the uplink transmission in the subframe in which the uplink and downlink transmission directions are uncertain, if If the transmission direction is downlink, the PDCCH and/or the reception is detected on the carrier corresponding to the downlink transmission in the subframe where the uplink and downlink transmission directions are uncertain. PDSCH.
  • This embodiment can be applied to the multi-subframe scheduling or the cross-subframe scheduling mode, because in this mode, the UE can know all the subframes whose uplink and downlink transmission directions are uncertain before the arrival of the subframe with the uplink and downlink transmission directions is uncertain.
  • Scheduling information (including DL grant and UL grant).
  • the terminal determines the transmission direction of the subframe in which the uplink and downlink transmission directions are indeterminate according to the preset subframe transmission direction determining method, and the specific implementation may be as follows:
  • the terminal determines, according to a preset transmission direction priority, a transmission direction of the subframe in which the uplink and downlink transmission directions are uncertain;
  • the terminal determines the transmission direction with the highest priority according to the preset transmission direction priority. If the transmission direction with the highest priority is the uplink, the transmission direction of the subframe whose uplink and downlink transmission direction is uncertain is determined to be uplink. If the transmission direction with the highest priority is downlink, the transmission direction of the subframe with the uplink and downlink transmission direction is determined to be downlink.
  • the terminal determines the transmission direction of the subframe in which the uplink and downlink transmission directions are uncertain according to the timing relationship between the downlink scheduling signaling and the uplink scheduling signaling sent by the received base station for the subframe in which the uplink and downlink transmission directions are uncertain.
  • the terminal determines whether the scheduling signaling of the subframe that is determined to be in the uplink and downlink transmission direction is the downlink scheduling signaling or the uplink scheduling signaling, and if it is the uplink scheduling signaling, determining that the uplink and downlink transmission directions are not
  • the transmission direction of the determined subframe is uplink, and if it is downlink scheduling signaling, it is determined that the transmission direction of the subframe whose uplink and downlink transmission direction is uncertain is downlink.
  • the terminal may perform one of the following two methods to determine the subframe determined by the transmission direction in the uplink and downlink overlapping subframe and the transmission direction corresponding to the subframe:
  • the uplink and downlink overlapping subframe is a subframe determined by the transmission direction, and the terminal transmits according to the deterministic signal or channel.
  • Direction determining a transmission direction of the uplink and downlink overlapping subframes
  • the base station configures the transmission direction of the uplink and downlink overlapping subframes by using the high layer signaling, and the terminal determines the transmission direction of the uplink and downlink overlapping subframes according to the high layer signaling configuration of the base station.
  • Steps 40-41 are performed in the uplink and downlink transmission subframes that are determined by the above two methods, except for the subframes determined by the uplink and downlink transmission directions.
  • the deterministic signal or channel is a Scheduling Request (SR) or periodic Channel State Information (CSI) or a Semi-Persistent Scheduling PUSCH (SPS PUSCH) Or the sounding reference signal (SS), if the uplink and downlink overlapping subframes are in the uplink direction, the PDCCH and/or the receiving PDSCH are not detected in the uplink and downlink overlapping subframes;
  • SR Scheduling Request
  • CSI Channel State Information
  • SPS PUSCH Semi-Persistent Scheduling PUSCH
  • SS Sounding reference signal
  • the deterministic signal or channel is a semi-persistently scheduled physical downlink shared channel (SPS PDSCH)
  • SPS PDSCH physical downlink shared channel
  • the deterministic signal or the channel is a physical random access (CHACH)
  • the uplink and downlink overlapping subframe is a special subframe, Detecting a PDCCH and/or receiving a PDSCH in a downlink special time slot in an uplink and downlink overlapping subframe, and transmitting a PRACH in an uplink special time slot in the uplink and downlink overlapping subframe; when the subframe is not a subframe 6, the Detecting PDCCH and/or receiving PDSCH in uplink and downlink overlapping subframes.
  • CHCH physical random access
  • the terminal sends an acknowledgement/not-acknowledgement (ACK/NACK) corresponding to the downlink data only in a subframe in which all carriers correspond to uplink transmission or uplink and downlink overlapping subframes used for uplink transmission. ; and / or,
  • ACK/NACK acknowledgement/not-acknowledgement
  • the terminal sends the ACK/NACK corresponding to the uplink data only in the subframe in which all the carriers correspond to the downlink transmission or the uplink and downlink overlapping subframes used for the downlink transmission.
  • an embodiment of the present invention further provides a data transmission scheduling method in a carrier aggregation system, including the following steps:
  • Step 50 Before transmitting, to the terminal, the downlink scheduling signaling of the subframe that is determined by the uplink and downlink transmission directions, the base station determines whether to send the uplink scheduling signaling of the subframe in which the uplink and downlink transmission directions are uncertain;
  • Step 51 When it is determined that the uplink scheduling signaling of the subframe in which the uplink and downlink transmission directions are indeterminate is sent, the downlink scheduling signaling for the uplink and downlink overlapping subframes is prohibited from being sent in the subframe where the uplink and downlink transmission directions are uncertain. Therefore, the UE is prevented from simultaneously performing uplink and downlink data transmission in the subframe in which the uplink and downlink transmission directions are uncertain.
  • the downlink of the subframe in which the uplink and downlink transmission directions are uncertain may be sent in the subframe where the uplink and downlink transmission directions are uncertain. Scheduling signaling.
  • the UL grant is always sent in advance. In the LTE system, the UL grant is sent at least 4 ms in advance. The UE can dynamically determine the transmission direction of the uplink and downlink overlapping subframes before the uplink and downlink overlapping subframes arrive.
  • the uplink and downlink overlapping subframes can be classified into two types: an uplink and downlink overlapping subframe determined by the transmission direction and an uplink and downlink overlapping subframe with an uncertain transmission direction, where the uplink and downlink overlapping subframes determined by the transmission direction may not exist.
  • the UE may know the uplink and downlink overlapping subframes determined by the transmission direction in advance according to the following two methods:
  • Method 1 Determine the transmission direction of the uplink and downlink overlapping subframes according to the pre-configured deterministic signal or the transmission subframe of the channel; for example:
  • the uplink and downlink overlapping subframes are overlapped with the subframes of the system that are configured to transmit, for example, the SR, the periodic CSI, the SPS PUSCH, and the SRS, the uplink and downlink overlapping subframes may be regarded as an uplink subframe. If the uplink and downlink overlapping subframes are overlapped with the semi-statically configured subframes for transmitting, for example, the SPS PDSCH, the uplink and downlink overlapping subframes may be regarded as downlink subframes;
  • the uplink and downlink overlapping subframes are special subframes, and the PDCCH and/or the PDSCH may be detected in a common downlink transmission part in the uplink and downlink overlapping subframes.
  • the subframe 6 in the band1 is a special subframe, and the Downlink Pilot Time Slot (DwPTS) occupies the first 19760Ts in the subframe, and the Uplink Pilot Time Slot (UpPTs) occupies the subframe.
  • DwPTS Downlink Pilot Time Slot
  • UpPTs Uplink Pilot Time Slot
  • the subframe 2 in the band2 is the downlink subframe
  • the UE can detect the PDCCH and/or receive the PDSCH in the first 19760Ts in the subframe 6 in the band1 and the band2, and the latter 2192 in the subframe 6 in the band1.
  • the PRACH is transmitted in Ts.
  • the uplink and downlink overlapping subframes are regarded as uplink subframes.
  • Method 2 Determine the transmission direction of the uplink and downlink overlapping subframes according to the high layer configuration signaling of the base station.
  • the uplink ACK/NACK (ie, the dynamically scheduled PDSCH, the SPS PDSCH, and the ACK/NACK corresponding to the PDCCH indicating the release of the SPS resource) are not transmitted in the uplink and downlink overlapping subframes whose transmission direction is uncertain, that is, only in all carriers.
  • the uplink transmitted subframe (such as subframe 2 and subframe 7 in FIG. 6) or the UE determines to transmit in the uplink and downlink overlapping subframes for uplink transmission.
  • the downlink ACK/NACK (ie, the ACK/NACK corresponding to the PUSCH) information is not transmitted in the uplink and downlink overlapping subframes whose transmission direction is uncertain, that is, the subframes corresponding to the downlink transmission only in all the carriers (such as the subframe in FIG. 6) 0, 1, 5, 6) or the UE determines to transmit in the uplink and downlink overlapping subframes for downlink transmission.
  • Method 1 If the UE receives the UL grant corresponding to the subframe n+x ( 0 ⁇ X k ) before the subframe n, the UE will Transmitting a PUSCH on a subframe n+x in a carrier corresponding to the UL grant, not detecting a PDCCH and/or receiving a PDSCH on a carrier corresponding to the downlink transmission in the subframe; if the UE does not receive the corresponding sub-frame before the subframe n For the UL grant of frame n+x (( x ⁇ k ), the UE will detect the PDCCH and/or receive the PDSCH on the carrier corresponding to the downlink transmission in the above subframe
  • the UE does not detect the PDCCH and/or receive on the carrier corresponding to the downlink transmission in the subframes n ⁇ n+x PDSCH;
  • the UE If the UE does not receive the UL grant of the corresponding subframe n+x ⁇ n+k ( 0 X k ) before the subframe n, the UE detects the carrier on the downlink transmission in the subframe n+x - n+k PDCCH and/or receive PDSCH.
  • the UE can obtain all scheduling information (including DL grant and subframes of subframes with uncertain uplink and downlink transmission directions) before the arrival of the subframes with uncertain uplink and downlink transmission directions.
  • UL grant taking FIG. 6 as an example, the base station transmits the scheduling information corresponding to the carrier on the band2 through the carrier in the band1, then the UE The corresponding UL grant and DL grant can be known before the arrival of subframes 3 and 4, then:
  • the UE may consider the subframe n+x as a blank subframe, and does not perform in the corresponding subframe. Data reception and transmission, thereby reducing UE power consumption;
  • the UE receives the corresponding UL grant for the uplink and downlink overlapping subframes n+x, but does not receive the corresponding DL grant,
  • the UE sends a PUSCH on the carrier corresponding to the uplink transmission in the subframe n+x;
  • the UE If the UE does not receive the corresponding UL grant for the uplink and downlink overlapping subframes n+x, but receives the corresponding DL grant, the UE detects the PDCCH and/or receives the carrier corresponding to the downlink transmission in the subframe n+x.
  • PDSCH Downlink Control Channel
  • the base station can process the following:
  • the system reserves a priority of the transmission direction. For example, the DL transmission takes precedence over the UL transmission, and after receiving the DL grant and the UL grant, the UE preferentially receives the DL data without performing the UL transmission; or
  • the UE is based on the last received scheduling signaling, for example, the UL grant is sent in the subframe m0, the DL grant is sent in the subframe ml, and ml > mO, the UE preferentially receives the DL data. , without UL transmission.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the UL grant corresponding to the subframe 8 is transmitted in the subframe 1
  • the UL grant corresponding to the subframe 9 is transmitted on the subframe 5.
  • the UE receives the UL grant of the base station in the subframe 1, the UL grant is used to schedule the UE to transmit the PUSCH on the carrier of the band1 in the subframe 8, and the UL grant is not received in the subframe 5, the UE will be in the bandl.
  • the PUSCH is transmitted on the subframe 8, and the PDCCH and/or the received PDSCH are detected in the subframe 9 of the band 2.
  • the UE If the UE does not receive the UL grant of the base station in subframe 1, and receives the UL grant in subframe 5, the UE will detect the PDCCH and/or receive the PDSCH in subframe 8 in band2, and the subframe in bandl The PUSCH is transmitted on 9.
  • the UE will detect the PDCCH and/or receive the PDSCH in subframes 8 and 9 on band2.
  • the UE If the UE receives the UL grant of the base station in both subframes 1 and 5, the UE will transmit the PUSCH in subframes 8 and 9 on bandl.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the UL grant is used to schedule the UE to transmit the PUSCH on the carrier of the band1 in the subframe 9, the UE considers the subframes 8 and 9 as the uplink subframe, and The carrier on band 2 detects the PDCCH and/or receives the PDSCH.
  • the UE If the UE does not receive the UL grant of the base station in both subframes 1 and 5, the UE considers subframes 8 and 9 as downlinks.
  • the frame will detect the PDCCH and/or receive the PDSCH on the carrier on the band 2 in the above subframe.
  • the UE receives the UL grant of the base station in the subframe 1, the UL grant is used to schedule the UE to transmit the PUSCH on the carrier of the band1 in the subframe 8, and the UL grant is not received in the subframe 5, the UE views the subframe 8 It is an uplink subframe, and subframe 9 is regarded as a downlink subframe.
  • a terminal is also provided in the embodiment of the present invention.
  • the principle of the terminal is similar to the data transmission method in the carrier aggregation system of the embodiment of the present invention. Therefore, the implementation of the terminal can be implemented by referring to the method. It will not be repeated here.
  • an embodiment of the present invention further provides a terminal, where the terminal includes:
  • the scheduling signaling determining unit 70 is configured to determine whether to receive uplink scheduling signaling sent by the base station for a subframe in which the uplink and downlink transmission directions are uncertain;
  • the signal transmission unit 71 is configured to send uplink data or receive downlink data by using a subframe in which the uplink and downlink transmission directions are uncertain according to the determination result.
  • the signal transmission unit 71 is used to:
  • the terminal If the terminal receives the uplink scheduling signaling sent by the base station for the subframe in which the uplink and downlink transmission directions are indeterminate, the terminal sends the uplink data to the uplink transmission carrier in the subframe where the uplink and downlink transmission direction is uncertain, otherwise, The terminal receives the downlink data on the carrier corresponding to the downlink transmission in the subframe in which the uplink and downlink transmission directions are uncertain, and detects the PDCCH.
  • the signal transmission unit 71 is used to:
  • the terminal does not receive the uplink scheduling signaling sent by the base station for the uplink and downlink overlapping subframes for each of the consecutive N uplink and downlink transmission direction subframes, the terminal overlaps each uplink and downlink. Detecting a PDCCH and/or receiving a PDSCH on a carrier corresponding to a downlink transmission in a frame;
  • the terminal does not Detecting a PDCCH and receiving a PDSCH in a critical subframe in a subframe in which the transmission direction is uncertain, and a subframe in the subframe before the critical subframe, and detecting PDCCH and receiving on a carrier corresponding to downlink transmission in a subframe subsequent to the critical subframe
  • the PDSCH is sent on a carrier corresponding to the uplink transmission in the subframe in which the uplink and downlink transmission signaling is received in the subframes where the uplink and downlink transmission directions are undefined; the critical subframe is the latest received uplink scheduling.
  • the subframe corresponding to the uplink and downlink transmission direction is not determined by the signaling; the N is a positive integer.
  • the signal transmission unit 71 is used to:
  • the terminal If the terminal receives the uplink scheduling signaling sent by the base station for the subframe in which the uplink and downlink transmission directions are indeterminate, and the base station does not receive the uplink and downlink transmission direction, the terminal does not receive the uplink and downlink transmission direction.
  • the downlink scheduling signaling sent by the subframe transmits the PUSCH on the carrier corresponding to the uplink transmission in the uplink and downlink overlapping subframe; if the terminal receives the uplink and downlink before the subframe with the uplink and downlink transmission direction is uncertain Downlink scheduling signaling delivered by a subframe with an undetermined transmission direction, and not received by the base station for a subframe that is uncertain for the uplink and downlink transmission direction Sending the uplink scheduling signaling, and receiving the detection PDCCH and/or receiving the PDSCH on the carrier corresponding to the downlink transmission in the uplink and downlink overlapping subframe;
  • the subframe is a blank subframe. Transmitting a PUSCH in a subframe in which the uplink and downlink transmission directions are not determined, and detecting a PDCCH and/or receiving a PDSCH, and not in a subframe in which the uplink and downlink transmission directions are not determined;
  • the terminal transmits according to the preset subframe.
  • the direction determining method determines a transmission direction of the subframe in which the uplink and downlink transmission directions are indeterminate. If the transmission direction is uplink, the PUSCH is transmitted on the carrier corresponding to the uplink transmission in the subframe in which the uplink and downlink transmission directions are uncertain, if the transmission is performed. If the direction is downlink, the PDCCH and/or the receiving PDSCH are detected on the carrier corresponding to the downlink transmission in the subframe in which the uplink and downlink transmission directions are uncertain.
  • the signal transmission unit 71 is used to:
  • the terminal also includes:
  • the subframe transmission direction determining unit 72 is configured to further determine, in the uplink and downlink overlapping subframes, before the scheduling signaling determining unit determines whether to receive the uplink scheduling signaling sent by the base station for the subframe in which the uplink and downlink transmission directions are uncertain.
  • the subframe determined by the row transmission direction and the transmission direction of the subframe include:
  • the transmission direction of the uplink and downlink overlapping subframes is determined according to the high layer signaling configuration of the base station.
  • the subframe transmission direction determining unit 72 is configured to:
  • the uplink and downlink overlapping subframes are transmitted in the uplink direction. Not detecting the PDCCH and/or receiving the PDSCH in the uplink and downlink overlapping subframe; or
  • the transmission direction of the uplink and downlink overlapping subframe is downlink, and the PDCCH and/or the receiving PDSCH are detected in the uplink and downlink overlapping subframe; Or,
  • the uplink and downlink overlapping subframe is a special subframe, and the downlink is in the uplink and downlink overlapping subframe.
  • the special time slot detects the PDCCH and/or receives the PDSCH, and transmits the PRACH in the uplink special time slot in the uplink and downlink overlapping subframe; the subframe is not a subframe.
  • the transmission direction of the uplink and downlink overlapping subframe is uplink, and the PDCCH and/or the PDSCH are not detected in the uplink and downlink overlapping subframe.
  • the signal transmission unit 71 is used to:
  • the ACK/NACK corresponding to the uplink data is transmitted only in the subframe in which all the carriers correspond to the downlink transmission or the uplink and downlink overlapping subframes used for the downlink transmission.
  • a base station is also provided in the embodiment of the present invention.
  • the principle of the base station solving the problem is similar to the data transmission scheduling method in the carrier aggregation system of the embodiment of the present invention. Therefore, the implementation of the base station can refer to the implementation of the method. The repetitions are not repeated here.
  • an embodiment of the present invention further provides a base station, where the base station includes:
  • the determining unit 80 is configured to determine, before sending, to the terminal, the downlink scheduling signaling of the subframe in which the uplink and downlink transmission directions are indeterminate, whether to send the uplink scheduling signaling of the subframe in which the uplink and downlink transmission directions are uncertain;
  • the processing unit 81 is configured to: when determining to send the uplink scheduling signaling of the subframe that is indeterminate in the uplink and downlink transmission direction, prohibit sending the uplink and downlink transmission directions in the subframe where the uplink and downlink transmission directions are uncertain. Downlink scheduling signaling for subframes.
  • the beneficial effects of the present invention include:
  • the terminal determines whether to receive the uplink scheduling signaling that is sent by the base station for the subframes whose uplink and downlink transmission directions are uncertain, and sends the subframes that are determined by the uplink and downlink transmission directions according to the determination result.
  • Uplink data or receive downlink data the terminal can determine, according to whether the uplink scheduling signaling is received, how to perform data transmission in the subframe with the uplink and downlink transmission direction uncertain, thereby solving the problem that the UE that cannot support simultaneous uplink and downlink transmission is uncertain in the uplink and downlink transmission directions. The problem of data transmission in the sub-frame.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé et un dispositif de transmission de données dans un système à agrégation de porteuses, relevant du domaine technique de la communication sans fil, dans le but de résoudre le problème de la transmission de données par un équipement d'utilisateur dans une sous-trame dont la direction de transmission montante ou descendante n'est pas assurée. Selon la présente invention, un terminal détermine si un signal d'ordonnancement de liaison montante correspondant à une sous-trame dont la direction d'émission montante ou descendante n'est pas assurée est reçu à partir d'une station de base et, en fonction du résultat de la détermination, utilise la sous-trame dont la direction d'émission montante ou descendante n'est pas assurée pour transmettre des données montantes ou recevoir des données descendantes. On observe donc que le terminal selon l'invention peut déterminer comment émettre des données dans la sous-trame dont la direction d'émission montante ou descendante n'est pas assurée en jugeant si un signal d'ordonnancement montant a été reçu, si bien que le problème de la transmission de données dans une sous-trame dont la direction d'émission montante ou descendante n'est pas assurée par un équipement d'utilisateur qui ne peut pas supporter simultanément des émissions montantes et descendantes se trouve résolu.
PCT/CN2012/077241 2011-07-01 2012-06-20 Procédé et dispositif de transmission de données dans un système à agrégation de porteuses Ceased WO2013004127A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110185250.3A CN102231643B (zh) 2011-07-01 2011-07-01 载波聚合系统中的数据传输方法和设备
CN201110185250.3 2011-07-01

Publications (1)

Publication Number Publication Date
WO2013004127A1 true WO2013004127A1 (fr) 2013-01-10

Family

ID=44844186

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2012/077241 Ceased WO2013004127A1 (fr) 2011-07-01 2012-06-20 Procédé et dispositif de transmission de données dans un système à agrégation de porteuses

Country Status (2)

Country Link
CN (1) CN102231643B (fr)
WO (1) WO2013004127A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160057744A1 (en) * 2013-04-01 2016-02-25 China Academy Of Telecommunications Technology Method and device for communication
CN110662304A (zh) * 2018-06-29 2020-01-07 中兴通讯股份有限公司 业务信道的传输方法、设备以及计算机可读存储介质

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102231643B (zh) * 2011-07-01 2014-03-12 电信科学技术研究院 载波聚合系统中的数据传输方法和设备
CN102299765B (zh) * 2011-07-18 2017-08-04 中兴通讯股份有限公司 一种传输控制方法和用户设备
CN103108328B (zh) * 2011-11-11 2016-05-25 中国移动通信集团公司 动态时隙配比方法、基站、终端和系统
CN102523627B (zh) * 2011-12-08 2014-04-02 电信科学技术研究院 一种数据传输方法及装置
CN103391157B (zh) * 2012-05-11 2018-03-23 中兴通讯股份有限公司 一种进行载波聚合的方法、终端及网络设备
CN103916350B (zh) * 2013-01-04 2017-09-05 中国移动通信集团公司 一种获取载波的信道信息的方法、系统和装置
CN104919878B (zh) * 2013-01-09 2019-07-02 夏普株式会社 终端装置以及基站装置
CN104104470B (zh) * 2013-04-08 2017-06-13 电信科学技术研究院 一种上行传输方法及设备
CN104639300B (zh) * 2013-11-12 2017-12-08 普天信息技术研究院有限公司 一种上行数据传输方法
EP3131349B1 (fr) * 2014-04-18 2020-08-26 Huawei Technologies Co., Ltd. Procédé de configuration de puissance, équipement d'utilisateur et station de base
PT3485597T (pt) * 2017-01-09 2020-05-06 Ericsson Telefon Ab L M Sistemas e métodos para indicação dinâmica fiável para csi-rs semipersistente
CN109451801B (zh) * 2017-12-28 2019-11-15 北京小米移动软件有限公司 确定传输方向信息的方法及装置
CN110475366B (zh) * 2018-05-10 2021-01-08 维沃移动通信有限公司 数据传输方法和设备
CN111385079B (zh) * 2018-12-31 2022-02-18 华为技术有限公司 无线网络通信方法和终端设备

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010105255A2 (fr) * 2009-03-13 2010-09-16 Interdigital Patent Holdings, Inc. Procédés et appareil d'allocation de liaison montante, d'attribution de liaison descendante et d'espace de recherche en agrégation de porteuses
CN101932114A (zh) * 2009-12-14 2010-12-29 中兴通讯股份有限公司 一种上行调度授权控制信令的发送方法和基站
CN101932052A (zh) * 2009-06-23 2010-12-29 华为技术有限公司 一种切换方法、用户终端及网络侧设备
CN102065556A (zh) * 2009-11-17 2011-05-18 鼎桥通信技术有限公司 一种hspa的上下行联合调度方法
CN102231643A (zh) * 2011-07-01 2011-11-02 电信科学技术研究院 载波聚合系统中的数据传输方法和设备

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010105255A2 (fr) * 2009-03-13 2010-09-16 Interdigital Patent Holdings, Inc. Procédés et appareil d'allocation de liaison montante, d'attribution de liaison descendante et d'espace de recherche en agrégation de porteuses
CN101932052A (zh) * 2009-06-23 2010-12-29 华为技术有限公司 一种切换方法、用户终端及网络侧设备
CN102065556A (zh) * 2009-11-17 2011-05-18 鼎桥通信技术有限公司 一种hspa的上下行联合调度方法
CN101932114A (zh) * 2009-12-14 2010-12-29 中兴通讯股份有限公司 一种上行调度授权控制信令的发送方法和基站
CN102231643A (zh) * 2011-07-01 2011-11-02 电信科学技术研究院 载波聚合系统中的数据传输方法和设备

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160057744A1 (en) * 2013-04-01 2016-02-25 China Academy Of Telecommunications Technology Method and device for communication
US10219251B2 (en) * 2013-04-01 2019-02-26 China Academy Of Telecommunications Technology Method and device for communication
CN110662304A (zh) * 2018-06-29 2020-01-07 中兴通讯股份有限公司 业务信道的传输方法、设备以及计算机可读存储介质

Also Published As

Publication number Publication date
CN102231643A (zh) 2011-11-02
CN102231643B (zh) 2014-03-12

Similar Documents

Publication Publication Date Title
WO2013004127A1 (fr) Procédé et dispositif de transmission de données dans un système à agrégation de porteuses
CN104756431B (zh) 无线通信中确认时序的选择
CN103312470B (zh) 一种harq反馈的实现方法及装置
US8798014B2 (en) Data transmission method and device in carrier aggregation system
CN110138517B (zh) 用于在通信系统中确定harq定时的方法和装置
US9648595B2 (en) Apparatus and method for transmitting/receiving physical uplink shared channel signal in cellular radio communication system supporting carrier aggregation scheme
TWI492567B (zh) A method and apparatus for determining ACK / NACK feedback bit number
AU2013290901A1 (en) Method and apparatus for transmitting HARQ-ACK feedback information by a user equipment in a wireless communication system
WO2013113272A1 (fr) Procédé, système et dispositif d'envoi et de réception d'informations de rétroaction
CN104982000B (zh) 在载波聚合系统中用于通信的方法和装置
CN103516496A (zh) 一种发送harq-ack反馈信息的方法
WO2015047580A1 (fr) Chronologie des harq pour l'agrégation de porteuses tdd-fdd
WO2013139207A1 (fr) Procédé et dispositif pour la transmission de signaux de commande sur la liaison descendante
WO2013143373A1 (fr) Procédé, système et dispositif de transmission d'informations de réponse
WO2014079310A1 (fr) Procédé et dispositif de transmission de données dans une bande de garde à duplex temporel (tdd)
CN102291227B (zh) 一种发送和接收反馈信息的方法、系统及装置
WO2013159734A1 (fr) Procédé et appareil de transmission de données
WO2017024564A1 (fr) Procédé et appareil pour envoyer des informations de liaison montante
WO2013143378A1 (fr) Procédé de mise en œuvre de rétroaction harq, et procédé et dispositif d'attribution de sous-trame de liaison montante
CN103905165B (zh) 应答反馈信息的发送和接收方法及设备
AU2017239575A1 (en) Data sending method and apparatus in spectrum aggregation
WO2015058577A1 (fr) Procédé et dispositif de traitement de retour d'informations en liaison montante
WO2017076113A1 (fr) Procédé et appareil de transmission de données dans un duplexage par répartition en fréquence (fdd) en semi-duplex

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12807370

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12807370

Country of ref document: EP

Kind code of ref document: A1