WO2017157151A1 - Procédé et dispositif de transmission de données - Google Patents

Procédé et dispositif de transmission de données Download PDF

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Publication number
WO2017157151A1
WO2017157151A1 PCT/CN2017/074570 CN2017074570W WO2017157151A1 WO 2017157151 A1 WO2017157151 A1 WO 2017157151A1 CN 2017074570 W CN2017074570 W CN 2017074570W WO 2017157151 A1 WO2017157151 A1 WO 2017157151A1
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Prior art keywords
base station
data
mac pdu
logical channel
scell
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English (en)
Chinese (zh)
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吴昱民
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ZTE Corp
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/27—Control channels or signalling for resource management between access points

Definitions

  • This application relates to, but is not limited to, the field of wireless communication technology.
  • CA Carrier Aggregation
  • UE User Equipment
  • RRC Radio Resource Control
  • NAS Non Access Stratum
  • TAI Tracking Area Identity
  • a serving cell provides a security input parameter, and the cell is called a primary cell (referred to as a PCell).
  • the carrier corresponding to the PCell refers to the Downlink Primary Component Carrier (DLPCC), and the uplink refers to the Uplink Primary Component Carrier (ULPC).
  • DLPCC Downlink Primary Component Carrier
  • ULPC Uplink Primary Component Carrier Only the PCell can transmit a physical uplink control channel (Physical Uplink Control Channel, PUCCH) channel, and the PCell cannot be deactivated.
  • PUCCH Physical Uplink Control Channel
  • one or more secondary cells may be configured together with the PCell to form a set of serving cells of the UE, and the PCell and the SCell are under the same base station.
  • the carrier corresponding to the SCell refers to the downlink secondary component carrier (Downlink Secondary Component Carrier, DL SCC for short), and the uplink refers to the uplink secondary component carrier (ULSCC).
  • the SCell can be activated and deactivated.
  • FIG. 1 is a schematic structural diagram of downlink transmission in the related art LTE technology.
  • the different carrier units Component Carriers, CC for the same UE
  • MAC Media Access Control
  • Hybrid Automatic Repeat reQuest Hybrid Automatic Repeat reQuest
  • HARQ Hybrid Automatic Repeat reQuest
  • the Packet Data Convergence Protocol (PDCP) layer mainly includes Robust Header Compression (ROHC) and Security.
  • the radio link control (Radio Link Control, RLC for short) layer mainly includes segmentation and automatic repeat reQuest (ARQ) functions.
  • PDCP Packet Data Convergence Protocol
  • ROHC Robust Header Compression
  • ARQ automatic repeat reQuest
  • Each CC corresponds to 1 independent HARQ entity.
  • each HARQ entity corresponds to eight HARQ processes.
  • TDD Time Division Duplexing
  • the amount of HARQ process data corresponding to each HARQ entity is 4 to 15 according to the uplink-downlink subframe ratio.
  • the transmitting end may send new data by using the HARQ process. If the feedback is a failure, the transmitting end uses the HARQ process to perform data retransmission. The receiving end combines the retransmitted data and the newly transmitted data, and feeds back the received result to the transmitting end.
  • the control signaling transmitted in the PUCCH includes a scheduling request (Scheduling Request, SR for short), ACK/NACK feedback of HARQ, and periodic channel information (
  • the Channel Quality Index, referred to as CQI includes a Precoding Matrix Indicator (PMI) and a Rank Indicator (RI: RI).
  • the SR can be transmitted with the HARQ ACK/NACK, but cannot be transmitted simultaneously with the CQI. When the SR collides with the CQI signaling at the same time, the UE will discard the CQI signaling and only send the SR.
  • the base station configures the capability of the UE to support the simultaneous transmission of the HARQ ACK/NACK and the CQI in a high-layer signaling manner. For a UE that cannot simultaneously transmit the HARQ ACK/NACK and the CQI, when the two signaling collisions, the CQI signaling is discarded.
  • the UE cannot transmit the PUCCH and the Physical Uplink Shared Channel (PUSCH) in the same subframe, where the PUSCH is used to transmit data information.
  • PUSCH Physical Uplink Shared Channel
  • the uplink control signaling collides with the uplink data
  • the uplink control signaling is multiplexed with the uplink data.
  • Uplink control signaling transmitted in the PUSCH includes ACK/NACK, CQI/PMI And RI.
  • the feedback of the ACK/NACK information on the PUCCH may adopt a channel division structure of code division multiplexing, and multiple mutually orthogonal channels are simultaneously provided for multiple users, and different users use respective PUCCH channel resources.
  • Physical Downlink Shared Channel Physical Downlink Shared Channel, PDSCH for short
  • Physical Downlink Control Channel Physical Downlink Control Channel, referred to as: Semi-Persistent Scheduling, SPS) : PDCCH
  • the first control channel element (referred to as: CCE) number of the PDCCH is obtained.
  • the UE In the scenario of carrier aggregation in the related art, the UE cannot implement carrier aggregation between different base stations, and in the scenario of carrier aggregation in the related art, the user plane data of the UE cannot be exchanged between different base stations.
  • the present invention provides a data transmission method and apparatus for implementing carrier aggregation between UEs in different base stations, and can implement user plane data of UEs to interact between different base stations in a carrier aggregation scenario.
  • a data transmission method is applied to a cross-base station carrier aggregation scenario, where the method includes:
  • the first base station sends the downlink control information DCI corresponding to the data to be transmitted by the secondary cell SCell of the first base station to the user equipment UE to the second base station through the inter-base station interface;
  • the second base station receives, by the first base station, a medium access control layer protocol data unit MAC PDU sent by the second base station, where the MAC PDU corresponds to the data, and the MAC PDU is And the second base station allocates, according to the DCI, the transmission opportunity of the SCell to the logical channel or the logical channel group corresponding to the data, and then assembles the data in the logical channel or the logical channel group corresponding to the data;
  • the hybrid automatic repeat request of the SCell requests the HARQ entity to obtain feedback information.
  • the DCI includes: an identifier of the SCell corresponding to the data, an identifier of the HARQ entity corresponding to the data, a number of the HARQ process corresponding to the data, a new data indication NDI, a redundancy version RV, and One or more of the following: modulation coding mode MCS, transport block size TBS, number of physical resource blocks PRB, frequency domain and time domain location where the PRB is located, downlink grant indication DAI, control channel element CCE location, total number of CCEs, The identifier of the UE corresponding to the data, the logical channel or the logical channel group corresponding to the data.
  • the method before the first base station sends the DCI corresponding to the data to the second base station, the method further includes:
  • the first base station determines a DCI corresponding to the data according to the data.
  • the method further includes:
  • the first base station receives, by using the inter-base station interface, the second base station to forward uplink control information UCI for the SCell, where the UCI is received by the second base station from the UE, where the UCI includes the following One or more of: channel quality information CQI, HARQ feedback information corresponding to the HARQ process.
  • the method further includes:
  • the first base station adjusts scheduling and configuration of downlink data according to the CQI.
  • the method further includes:
  • the first base station confirms that the data corresponding to the HARQ process is successfully sent and notifies the second base station;
  • the first base station confirms that the data transmission corresponding to the HARQ process fails and determines whether to perform HARQ retransmission; wherein, when the first base station determines to perform HARQ retransmission Transmitting, by the first base station, the DCI to the second base station by using the inter-base station interface, and forwarding the completed HARQ retransmission to the UE after receiving the MAC PDU sent by the second base station; When the first base station determines that the HARQ retransmission is not performed, the first base station notifies the second base station that the data transmission corresponding to the HARQ process fails.
  • a data transmission method is applied to a cross-base station carrier aggregation scenario, where the method includes:
  • the second base station allocates the transmission opportunity of the SCell to the logical channel or the logical channel group corresponding to the data according to the DCI, and assembles the data in the logical channel or the logical channel group corresponding to the data to obtain the MAC.
  • PDU
  • the hybrid automatic repeat request of the SCell requests the HARQ entity to obtain feedback information.
  • the DCI includes: an identifier of the SCell corresponding to the data, an identifier of the HARQ entity corresponding to the data, a number of the HARQ process corresponding to the data, a new data indication NDI, a redundancy version RV, and One or more of the following: modulation coding mode MCS, transport block size TBS, number of physical resource blocks PRB, frequency domain and time domain location where the PRB is located, downlink grant indication DAI, control channel element CCE location, total number of CCEs, The identifier of the UE corresponding to the data, the logical channel or the logical channel group corresponding to the data.
  • the method further includes:
  • the uplink control information UCI sent by the UE for the SCell and forwarding the UCI to the first base station by using the inter-base station interface; where the UCI includes the following item Or multiple: channel quality information CQI, HARQ feedback information corresponding to the HARQ process.
  • the method further includes:
  • the second base station releases the cached data
  • the second base station performs radio link control layer RLC retransmission or media access control layer MAC retransmission on the data that fails to be sent.
  • a data transmission method is applied to a cross-base station carrier aggregation scenario, where the method includes:
  • the first base station sends the downlink control information DCI corresponding to the data to be transmitted by the secondary cell SCell of the first base station to the user equipment UE to the second base station through the inter-base station interface;
  • MAC PDU receives, by the first base station, a media access control layer protocol data unit MAC PDU and related information of the MAC PDU sent by the second base station, where the MAC PDU corresponds to the data
  • the MAC PDU is allocated by the second base station to the logical channel or logical channel group corresponding to the data according to the DCI, and then in the logical channel or logical channel group corresponding to the data.
  • the information about the MAC PDU is obtained by the following: the identifier of the SC PDU, the identifier of the hybrid automatic repeat request HARQ entity corresponding to the MAC PDU, the number of the HARQ process corresponding to the MAC PDU, New data indicates NDI, redundancy version RV;
  • the first base station sends the MAC PDU to the UE according to related information of the MAC PDU.
  • the DCI includes one or more of the following: an identifier of the SCell corresponding to the data, an identifier of the HARQ entity corresponding to the data, a modulation and coding mode MCS, a transport block size TBS, and a physical resource block PRB.
  • the number of the HARQ process corresponding to the data, the new data indication NDI, and the redundancy version RV are not included in the DCI.
  • the method before the first base station sends the DCI corresponding to the data to the second base station, the method further includes:
  • the first base station determines a DCI corresponding to the data according to the data.
  • the method further includes:
  • the uplink control information UCI for the SCell that is sent by the second base station by using the inter-base station interface, where the UCI is received by the second base station from the UE, where the UCI includes One or more of the following: channel quality information CQI, HARQ feedback information corresponding to the HARQ process.
  • the method further includes:
  • the first base station adjusts scheduling and configuration of downlink data according to the CQI.
  • the method further includes:
  • the first base station releases the cached data
  • the first base station sends the DCI to the second base station by using the inter-base station interface, and After receiving the MAC PDU sent by the second base station, forwarding the HARQ retransmission to the UE.
  • a data transmission method is applied to a cross-base station carrier aggregation scenario, where the method includes:
  • the second base station allocates the transmission opportunity of the SCell to the logical channel or the logical channel group corresponding to the data according to the DCI, and assembles the data in the logical channel or the logical channel group corresponding to the data to obtain the MAC.
  • the MAC PDU is sent to the UE, where the information about the MAC PDU includes: an identifier of the SCell, an identifier of a hybrid automatic repeat request HARQ entity corresponding to the MAC PDU, and a HARQ process corresponding to the MAC PDU.
  • Number, new data indicates NDI, redundancy version RV;
  • the second base station acquires feedback information by using a HARQ entity corresponding to the SCell in the second base station.
  • the DCI includes one or more of the following: an identifier of the SCell corresponding to the data, an identifier of the HARQ entity corresponding to the data, a modulation and coding mode MCS, a transport block size TBS, and a physical resource block PRB.
  • the number of the HARQ process corresponding to the data, the new data indication NDI, and the redundancy version RV are not included in the DCI.
  • the method further includes:
  • the uplink control information UCI sent by the UE for the SCell and forwarding the UCI to the first base station by using the inter-base station interface; where the UCI packet is included
  • the method further includes:
  • the second base station confirms that the data corresponding to the HARQ process is successfully sent and notifies the first base station;
  • the second base station confirms that the data transmission corresponding to the HARQ process fails and determines whether to perform HARQ retransmission; wherein, when the second base station determines to perform HARQ retransmission The second base station instructs the first base station to send the DCI to the second base station by using the inter-base station interface, and forwards the HARQ to the UE after receiving the MAC PDU sent by the second base station. Retransmitting; when the second base station determines that the HARQ retransmission is not performed, the second base station notifies the first base station that the data transmission corresponding to the HARQ process fails.
  • the method further includes:
  • the second base station performs radio link control layer RLC retransmission or media access control layer MAC retransmission on the data that fails to be transmitted.
  • a base station is applied to a cross-base station carrier aggregation scenario, where the base station includes:
  • a sending unit configured to: send downlink control information DCI corresponding to data to be transmitted by the secondary cell SCell of the base station to the user equipment UE to another base station through an inter-base station interface;
  • a receiving unit configured to: receive, by using the inter-base station interface, a media access control layer protocol data unit MAC PDU sent by the another base station; where the MAC PDU corresponds to the data, and the MAC PDU is a
  • the other base station allocates the transmission opportunity of the SCell to the logical channel or the logical channel group corresponding to the data according to the DCI, and then assembles the data in the logical channel or the logical channel group corresponding to the data;
  • the sending unit is further configured to: send the MAC PDU received by the receiving unit to the UE;
  • An obtaining unit configured to: pass a hybrid automatic repeat request corresponding to the SCell in the base station
  • the HARQ entity obtains feedback information.
  • the DCI includes: an identifier of the SCell corresponding to the data, an identifier of the HARQ entity corresponding to the data, a number of the HARQ process corresponding to the data, a new data indication NDI, a redundancy version RV, and One or more of the following: modulation coding mode MCS, transport block size TBS, number of physical resource blocks PRB, frequency domain and time domain location where the PRB is located, downlink grant indication DAI, control channel element CCE location, total number of CCEs, The identifier of the UE corresponding to the data, the logical channel or the logical channel group corresponding to the data.
  • a base station is applied to a cross-base station carrier aggregation scenario, where the base station includes:
  • a receiving unit configured to: receive, by using an inter-base station interface, downlink control information DCI corresponding to data that is sent by another base station to be transmitted to the user equipment UE by the secondary cell SCell of the another base station;
  • a processing unit configured to: allocate, according to the DCI received by the receiving unit, a transmission opportunity of the SCell to a logical channel or a logical channel group corresponding to the data, and then perform a logical channel or a logical channel group corresponding to the data After the data is assembled, a media access control layer protocol data unit MAC PDU is obtained;
  • a sending unit configured to: send, by using the inter-base station interface, the MAC PDU obtained by the processing unit to the another base station, and trigger the another base station to send the MAC PDU to the UE and pass the
  • the hybrid automatic repeat request HARQ entity corresponding to the SCell in the another base station acquires feedback information.
  • the DCI includes: an identifier of the SCell corresponding to the data, an identifier of the HARQ entity corresponding to the data, a number of the HARQ process corresponding to the data, a new data indication NDI, a redundancy version RV, and One or more of the following: modulation coding mode MCS, transport block size TBS, number of physical resource blocks PRB, frequency domain and time domain location where the PRB is located, downlink grant indication DAI, control channel element CCE location, total number of CCEs, The identifier of the UE corresponding to the data, the logical channel or the logical channel group corresponding to the data.
  • a base station is applied to a cross-base station carrier aggregation scenario, where the base station includes:
  • a sending unit configured to: send downlink control information DCI corresponding to data to be transmitted by the secondary cell SCell of the base station to the user equipment UE to another base station through an inter-base station interface;
  • a receiving unit configured to: receive, by using the inter-base station interface, the media sent by the another base station Access control layer protocol data unit MAC PDU and related information of the MAC PDU; wherein the MAC PDU corresponds to the data, and the MAC PDU is determined by the another base station according to the DCI
  • the transmission opportunity is allocated to the logical channel or the logical channel group corresponding to the data, and the data in the logical channel or the logical channel group corresponding to the data is assembled;
  • the related information of the MAC PDU includes: the SCell The identifier of the hybrid automatic repeat request HARQ entity corresponding to the MAC PDU, the number of the HARQ process corresponding to the MAC PDU, the new data indication NDI, and the redundancy version RV;
  • the sending unit is further configured to: send the MAC PDU to the UE according to the related information of the MAC PDU received by the receiving unit.
  • the DCI includes one or more of the following: an identifier of the SCell corresponding to the data, an identifier of the HARQ entity corresponding to the data, a modulation and coding mode MCS, a transport block size TBS, and a physical resource block PRB.
  • the number of the HARQ process corresponding to the data, the new data indication NDI, and the redundancy version RV are not included in the DCI.
  • a base station is applied to a cross-base station carrier aggregation scenario, where the base station includes:
  • a receiving unit configured to: receive, by using an inter-base station interface, downlink control information DCI corresponding to data that is sent by another base station to be transmitted to the user equipment UE by the secondary cell SCell of the another base station;
  • a processing unit configured to: allocate, according to the DCI received by the receiving unit, a transmission opportunity of the SCell to a logical channel or a logical channel group corresponding to the data, and then perform a logical channel or a logical channel group corresponding to the data After the data is assembled, the media access control layer protocol data unit MAC PDU and the MAC PDU related information are obtained;
  • a sending unit configured to: send, by using the inter-base station interface, related information of the MAC PDU and the MAC PDU obtained by the processing unit to the another base station, and trigger the another base station to perform according to the MAC address
  • the related information of the PDU is sent to the UE by the MAC PDU, where the information about the MAC PDU includes: an identifier of the SCell, an identifier of a hybrid automatic repeat request HARQ entity corresponding to the MAC PDU, and a The number of the HARQ process corresponding to the MAC PDU, the new data indicating the NDI, and the redundancy version RV;
  • An obtaining unit configured to: obtain, by using a HARQ entity corresponding to the SCell in the base station Feed information.
  • the DCI includes one or more of the following: an identifier of the SCell corresponding to the data, an identifier of the HARQ entity corresponding to the data, a modulation and coding mode MCS, a transport block size TBS, and a physical resource block PRB.
  • the number of the HARQ process corresponding to the data, the new data indication NDI, and the redundancy version RV are not included in the DCI.
  • a computer storage medium having stored therein computer executable instructions for performing the data transmission method provided by any of the above aspects of the present invention.
  • the data transmission method and device provided by the embodiment of the present invention comprise a carrier aggregation by the Scell on the first base station and the Pcell on the second base station.
  • the first base station corresponds to the data to be transmitted.
  • the DCI is sent to the second base station through the inter-base station interface, and the second base station assembles the corresponding MAC PDU according to the received DCI data to be sent to the first base station, and the first base station sends the MAC PDU to the UE, and passes the first In the base station or the second base station, the HARQ entity corresponding to the SCell obtains the feedback information of the data transmission; the foregoing technical solution implements the cross-base station carrier aggregation, and realizes that the user plane data of the UE interacts between different base stations in the carrier aggregation scenario.
  • FIG. 1 is a schematic structural diagram of downlink transmission in an LTE technology of a related art
  • FIG. 2 is a schematic flowchart of a method for data transmission according to an embodiment of the present invention
  • FIG. 3 is a schematic flowchart diagram of another method for data transmission according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic flowchart diagram of still another method for data transmission according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic flowchart of still another method for data transmission according to an embodiment of the present disclosure.
  • FIG. 6 is a flowchart of signaling interaction of a method for data transmission according to Embodiment 1 of the present invention.
  • FIG. 7 is a signaling interaction process of a data transmission method according to Embodiment 2 of the present invention.
  • FIG. 8 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of another base station according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of still another base station according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of still another base station according to an embodiment of the present invention.
  • the embodiment of the present invention provides a data transmission method, which is applied to a cross-base station carrier aggregation scenario.
  • the Scell is on the first base station
  • the Pcell is on the second base station, which is provided by the embodiment of the present invention.
  • the method is performed by the first base station.
  • FIG. 2 is a schematic flowchart of a method for data transmission according to an embodiment of the present invention. The method may include the following steps, that is, steps 101 to 103:
  • Step 101 The first base station sends downlink control information (Downlink Control Information, DCI) corresponding to the data to be transmitted by the SCell of the first base station to the UE to the second base station through the inter-base station interface.
  • DCI Downlink Control Information
  • Step 102 The first base station receives, by using the inter-base station interface, a Medium Access Control Protocol Data Unit (MAC PDU) sent by the second base station.
  • MAC PDU Medium Access Control Protocol Data Unit
  • the MAC PDU corresponds to data to be transmitted to the UE by the SCell of the first base station, and the MAC PDU is determined by the second base station according to the DCI corresponding to the data.
  • the transmission opportunity of the SCell is allocated to the logical channel or the logical channel group corresponding to the data, and then the data in the logical channel or the logical channel group corresponding to the data is assembled.
  • Step 103 The first base station sends the MAC PDU to the UE, and obtains feedback information by using the HARQ entity corresponding to the SCell in the first base station.
  • the HARQ entity corresponding to the SCell is on the first base station side.
  • the DCI may include: an identifier of the SCell corresponding to the data, an identifier of the HARQ entity corresponding to the data, a number of the HARQ process corresponding to the data, and a new data indicator (New Data Indicator) , referred to as: NDI), Redundancy Version (RV), and one or more of the following: Modulation and Coding Scheme (MCS), Transport Block Size (Transport Block Size) , referred to as: TBS), physical resource block (Physical Resource Block, PRB for short), frequency and time domain location of the PRB, Downlink Assignment Index (DAI), control channel element (Control Channel Element, abbreviated as: CCE) Location, total number of CCEs, identity of the UE corresponding to the data, logical channel or logical channel group corresponding to the data.
  • New Data Indicator referred to as: NDI
  • RV Redundancy Version
  • MCS Modulation and Coding Scheme
  • TBS Transport Block Size
  • PRB Physical Resource Block
  • the method may further include:
  • the first base station determines the DCI corresponding to the data according to the data.
  • the method may further include:
  • the first base station receives, by the inter-base station interface, uplink control information (Uplink Control Information, UCI) that is forwarded by the second base station to the SCell, where the UCI is received by the second base station from the UE, where the UCI includes one or more of the following: Item: HARQ feedback information corresponding to CQI and HARQ processes.
  • UCI Uplink Control Information
  • the method provided by the embodiment of the present invention may further include:
  • the first base station adjusts scheduling and configuration of downlink data according to the CQI.
  • the method provided by the embodiment of the present invention may further include:
  • the first base station confirms that the data corresponding to the HARQ process is successfully sent and notifies the second base station;
  • the first base station confirms that the data transmission corresponding to the HARQ process fails and determines whether to perform HARQ retransmission; optionally, when the first base station When determining that the HARQ retransmission is performed, the first base station sends the DCI to the second base station through the inter-base station interface and forwards the completed HARQ retransmission to the UE after receiving the MAC PDU sent by the second base station; when the first base station determines not to perform the HARQ retransmission The first base station notifies the second base station that the data transmission corresponding to the HARQ process fails.
  • NACK NACK or Discontinuous Transmission
  • the embodiment of the present invention further provides a data transmission method, which is applied to a cross-base station carrier aggregation scenario.
  • the Scell is on the first base station
  • the Pcell is on the second base station.
  • the method provided is performed by a second base station.
  • FIG. 3 is a schematic flowchart of another method for data transmission according to an embodiment of the present invention. The method may include the following steps, that is, steps 201 to 203:
  • Step 201 The second base station receives, by using the inter-base station interface, the DCI corresponding to the data that is sent by the first base station and transmitted by the SCell of the first base station to the UE.
  • Step 202 The second base station allocates the transmission opportunity of the SCell to the logical channel or the logical channel group corresponding to the data according to the DCI, and assembles the data in the logical channel or the logical channel group corresponding to the data to obtain the MAC PDU.
  • Step 203 The second base station sends the MAC PDU to the first base station through the inter-base station interface, and triggers the first base station to send the MAC PDU to the UE, and then obtains the feedback information by using the HARQ entity of the corresponding SCell in the first base station.
  • the HARQ entity corresponding to the SCell is on the first base station side.
  • the DCI may include: an identifier of the SCell corresponding to the data, an identifier of the HARQ entity corresponding to the data, a number of the HARQ process corresponding to the data, an NDI, an RV, and the following Item or multiple: MCS, TBS, number of PRBs, frequency and time domain locations where the PRB is located, DAI, CCE location, total number of CCEs, UEs corresponding to the data Identify the logical channel or logical channel group corresponding to the data.
  • the method may further include:
  • the second base station receives the UCI sent by the UE for the SCell, and forwards the UCI to the first base station by using the inter-base station interface.
  • the UCI may include one or more of the following: CQI, HARQ feedback corresponding to the HARQ process. information.
  • the method may further include:
  • the second base station releases the cached data
  • the second base station If the second base station receives an indication that the data sent by the first base station fails to be sent, the second base station performs RLC retransmission or MAC retransmission on the data that fails to be transmitted.
  • the Scell on the first base station and the Pcell on the second base station form a carrier aggregation, and when the data of the UE needs to be transmitted through the Scell, the first base station is to be
  • the DCI corresponding to the transmitted data is sent to the second base station through the inter-base station interface, and the second base station assembles the corresponding MAC PDU according to the received DCI to be transmitted to the first base station, and the first base station sends the MAC PDU to the UE.
  • the cross-base station carrier aggregation is implemented, and the user plane data of the UE is performed between different base stations in the carrier aggregation scenario. Interaction.
  • the embodiment of the present invention further provides a data transmission method, which is applied to a cross-base station carrier aggregation scenario.
  • the Scell is on the first base station
  • the Pcell is on the second base station.
  • the method provided is performed by the first base station.
  • FIG. 4 is a schematic flowchart of a method for data transmission according to an embodiment of the present invention. The method may include the following steps, that is, steps 301 to 303:
  • Step 301 The first base station sends the DCI corresponding to the data to be transmitted by the SCell of the first base station to the UE to the second base station through the inter-base station interface.
  • Step 302 The first base station receives, by using the inter-base station interface, a MAC PDU sent by the second base station and related information of the MAC PDU.
  • the MAC PDU is corresponding to the data to be transmitted to the UE by the SCell of the first base station, and the MAC PDU is allocated by the second base station to the data corresponding to the data according to the DCI corresponding to the data.
  • the logical channel or the logical channel group is obtained by assembling the data in the logical channel or the logical channel group corresponding to the data.
  • the related information of the MAC PDU includes: an identifier of the SCell, and an identifier of the HARQ entity corresponding to the MAC PDU. The number, NDI, and RV of the HARQ process corresponding to the MAC PDU.
  • Step 303 The first base station sends the MAC PDU to the UE according to the related information of the MAC PDU.
  • the HARQ entity corresponding to the SCell is on the second base station side.
  • the DCI includes one or more of the following: the identifier of the SCell corresponding to the data, the identifier of the HARQ entity corresponding to the data, the number of the MCS, the TBS, the PRB, and the location of the PRB.
  • the method may further include:
  • the first base station determines the DCI corresponding to the data according to the data.
  • the method may further include:
  • the first base station receives, by the inter-base station interface, the UCI for the SCell, which is received by the second base station, and the UCI is received by the second base station from the UE.
  • the UCI includes one or more of the following: the HARQ feedback information corresponding to the CQI and the HARQ process.
  • the method provided by the embodiment of the present invention may further include:
  • the first base station adjusts scheduling and configuration of downlink data according to the CQI.
  • the method provided by the embodiment of the present invention may further include:
  • the first base station releases the buffered data
  • the first base station sends the DCI to the second base station through the inter-base station interface, and after receiving the MAC PDU sent by the second base station, forwards the HARQ retransmission to the UE.
  • the embodiment of the present invention further provides a data transmission method, which is applied to a cross-base station carrier aggregation scenario.
  • the Scell is on the first base station
  • the Pcell is on the second base station.
  • the method provided by the second base station is as shown in FIG. 5, which is a schematic flowchart of a method for data transmission according to an embodiment of the present invention.
  • the method may include the following steps, that is, steps 401 to 404:
  • Step 401 The second base station receives, by using an inter-base station interface, a DCI corresponding to the data that is sent by the first base station and transmitted by the SCell of the first base station to the UE.
  • Step 402 The second base station allocates the transmission opportunity of the SCell to the logical channel or the logical channel group corresponding to the data according to the DCI, and assembles the data in the logical channel or the logical channel group corresponding to the data to obtain the MAC PDU and the MAC. Information about the PDU.
  • Step 403 The second base station sends the MAC PDU and the related information of the MAC PDU to the first base station by using the inter-base station interface, and triggers the first base station to send the MAC PDU to the UE according to the related information of the MAC PDU.
  • the information about the MAC PDU includes: an identifier of the SCell, an identifier of the HARQ entity corresponding to the MAC PDU, a number of the HARQ process corresponding to the MAC PDU, an NDI, and an RV.
  • Step 404 The second base station acquires feedback information by using a HARQ entity corresponding to the SCell in the second base station.
  • the HARQ entity corresponding to the SCell is on the second base station side.
  • the DCI may include one or more of the following: the identifier of the SCell corresponding to the data, the identifier of the HARQ entity corresponding to the data, the modulation and coding mode MCS, and the transport block size.
  • the channel group; and the number of the HARQ process corresponding to the data, the new data indicating NDI, and the redundancy version RV are not included in the DCI.
  • the method further includes:
  • the second base station receives the uplink control information UCI for the SCell sent by the UE, and forwards the UCI to the first base station by using an inter-base station interface, where the UCI may include one or more of the following: channel quality information CQI, The HARQ feedback information corresponding to the HARQ process.
  • the method provided by the embodiment of the present invention may further include:
  • the second base station confirms that the data corresponding to the HARQ process is successfully sent and notifies the first base station;
  • the second base station confirms that the data transmission corresponding to the HARQ process fails and determines whether to perform HARQ retransmission; wherein, when the second base station determines to perform HARQ retransmission, the second base station indicates the first The base station sends the DCI to the second base station through the inter-base station interface and forwards the completed HARQ retransmission to the UE after receiving the MAC PDU sent by the second base station; when the second base station determines not to perform the HARQ retransmission, the second base station notifies the first The data corresponding to the base station HARQ process fails to be transmitted.
  • the method provided by the embodiment of the present invention may further include:
  • the second base station performs RLC retransmission or MAC retransmission on the data that failed to be transmitted.
  • the Scell on the first base station and the Pcell on the second base station form a carrier aggregation
  • the first base station is to be
  • the DCI corresponding to the transmitted data is sent to the second base station through the inter-base station interface
  • the second base station assembles the data to be transmitted into the corresponding base station according to the received DCI, and then sends the data to the first base station, where the first base station sends the MAC PDU to the first base station.
  • the UE obtains the feedback information of the data transmission by using the HARQ entity in the second base station.
  • the above-mentioned technical solution implements the cross-base station carrier aggregation, and implements the user plane data of the UE to interact between different base stations in the carrier aggregation scenario.
  • the present embodiment corresponds to the technical solution shown in FIG. 2 and FIG. 3, wherein in the present embodiment, the first base station where the Scell is located may be denoted as (SCell eNB), and for convenience of description, it may be simplified as S-eNB, Pcell.
  • the second base station may be referred to as a (PCell eNB).
  • PCell eNB For convenience of description, it may be simplified as a P-eNB, and the HARQ entity corresponding to the Scell is on the S-eNB, as shown in FIG.
  • a signaling interaction flowchart of a method for data transmission the implementation example may include the following steps, that is, steps 1 to 10:
  • Step 1 For the new transmission data of the SCell transmission in the S-eNB, the S-eNB determines the DCI corresponding to the data on the SCell; at the same time, the S-eNB sends the DCI corresponding to the data to the P-eNB through the inter-base station interface. And inform the P-eNB that the DCI corresponds to the SCell.
  • the DCI may include: an identifier of the SCell corresponding to the data, an identifier of the HARQ entity corresponding to the data, a number of the HARQ process corresponding to the data, a new data indication NDI, and redundancy.
  • Version RV and one or more of the following: modulation coding mode MCS, transport block size TBS, number of physical resource blocks PRB, frequency domain and time domain location where the PRB is located, downlink grant indication DAI, control channel element CCE location, CCE The total number, the identifier of the UE corresponding to the data, the logical channel or the logical channel group corresponding to the data.
  • Step 2 The P-eNB allocates the transmission opportunity of the SCell to the logical channel or logical channel group corresponding to the data according to the information in the DCI in step 1 (for example, according to the TBS when the TBS is included), and the foregoing logical channel or
  • the data in the logical channel group is assembled into a MAC PDU, and the assembled MAC PDU is sent to the S-eNB through the inter-base station interface, and the HARQ process corresponding to the foregoing MAC PDU is notified to the S-eNB, and the cell corresponding to the HARQ process is also That is the SCell.
  • Step 3 After receiving the MAC PDU sent by the P-eNB in step 2, the S-eNB sends the received MAC PDU to the UE through the corresponding HARQ process and the PDSCH (for bearer data). At the same time, since the data is newly transmitted data, the S-eNB buffers the data.
  • Step 4 The UE performs HARQ feedback according to the data in the received PDSCH. If the data decoding succeeds in feeding back the ACK, if the data decoding fails to feed back the NACK, the UE feeds back the CQI of the SCell according to the configuration on the network side.
  • Step 5 The P-eNB receives and decodes the UCI of the corresponding PUCCH bearer on the SCell of the UE according to the scheduling information in the DCI received in the step 1, and the P-eNB transfers the UCI to the S- through the inter-base station interface.
  • the eNB informs the S-eNB that the UCI corresponds to the SCell.
  • the UCI of the example may include one or more of the following: the HARQ feedback information corresponding to the CQI and the HARQ process.
  • Step 6 If the S-eNB receives the UCI in the step 5 as the CQI, the S-eNB adjusts the scheduling and configuration of the downlink data according to the CQI; if the S-eNB receives the UCI in the step 5 as the HARQ feedback corresponding to the HARQ process.
  • the S-eNB may notify the P-eNB of the indication that the data is successfully sent (see step 9), and notify P- The eNB corresponding to the HARQ process is the foregoing SCell; if the HARQ process feedback is NACK or DTX, it is confirmed that the data transmission of the HARQ process transmission fails, and the S-eNB may perform HARQ retransmission on the data (step 6b in the figure).
  • the S-eNB receives the P-eNB reassembled MAC PDU and forwards the UE to complete the HARQ retransmission; if the UE data reception fails, and the S-eNB determines not to perform HARQ retransmission on the data, the S-eNB may Notifying the P-eNB of the indication of the failure of transmission (see step 9) and notifying the P-eNB Indicate corresponding the SCell.
  • Step 7 After receiving the retransmission data, the UE performs HARQ merge decoding, and the data decoding succeeds in feeding back ACK, and the data decoding failure feedback NACK.
  • Step 8 The P-eNB receives the UCI of the corresponding PUCCH bearer on the SCell of the UE according to the scheduling information in the DCI received in step 6, and performs decoding, and the P-eNB forwards the UCI to the S through the inter-base station interface. - eNB, and inform the S-eNB that the UCI corresponds to the SCell.
  • the UCI in this implementation example may include one or more of the following: CQI, HARQ feedback information corresponding to the HARQ process.
  • Step 9 If the S-eNB receives the HARQ feedback information as the ACK in step 8, and determines that the data transmission of the HARQ process is successful, the S-eNB may notify the P-eNB of the indication that the data is successfully sent, and notify the P-eNB of the success.
  • the indication corresponds to the foregoing SCell; if the S-eNB determines in step 8 that the data transmission of the HARQ process fails, and the S-eNB determines not to perform HARQ retransmission on the data, the S-eNB may notify the P-eNB of the indication of the data transmission failure. And specifying to inform the P-eNB that the failure indication corresponds to the foregoing SCell.
  • Step 10 If the P-eNB receives an indication that the data transmission is successful according to step 6, the P-eNB The cached related data may be released (ie, the new data in step 1); if the P-eNB receives the indication of the data transmission failure according to step 6, the P-eNB may perform RLC retransmission or MAC retransmission on the data that fails to be transmitted. . It should be noted that the P-eNB where the PCell is located performs RLC retransmission or MAC retransmission through the PCell, which belongs to the related art.
  • the second embodiment of the present embodiment corresponds to the technical solution shown in FIG. 4 and FIG. 5, wherein in the present embodiment, the first base station where the Scell is located may be referred to as an (SCell eNB), which may be simplified as an S-eNB for convenience of description.
  • the second base station where the Pcell is located may be referred to as a (PCell eNB).
  • the P-eNB may be simplified as a P-eNB, and the HARQ entity corresponding to the Scell is on the P-eNB.
  • FIG. 7 the second embodiment of the present invention is provided in the second embodiment of the present invention.
  • a signaling interaction flowchart of a method for data transmission, the implementation example may include the following steps, that is, steps 1 to 10:
  • Step 1 For the new transmission data of the SCell transmission in the S-eNB, the S-eNB determines the DCI corresponding to the data on the SCell; at the same time, the S-eNB sends the DCI corresponding to the data to the P-eNB through the inter-base station interface. And inform the P-eNB that the DCI corresponds to the SCell.
  • the DCI includes one or more of the following: a modulation and coding mode MCS, a transport block size TBS, a number of physical resource blocks PRB, a frequency domain and a time domain location where the PRB is located, and a downlink authorization.
  • MCS modulation and coding mode
  • TBS transport block size
  • PRB physical resource blocks
  • TBS transport block size
  • PRB resource block size
  • PRB number of physical resource blocks
  • a downlink authorization Indicates the DAI, the CCE location of the control channel element, the total number of CCEs, the identity of the UE corresponding to the data, and the logical channel or logical channel group corresponding to the data.
  • Step 2 The P-eNB allocates the transmission opportunity of the SCell to the logical channel or logical channel group corresponding to the data according to the information in the DCI in step 1 (for example, according to the TBS when the TBS is included), and the foregoing logical channel or The data in the logical channel group is assembled into a MAC PDU, and the assembled MAC PDU is sent to the S-eNB through the inter-base station interface, and the P-eNB sends the related information of the MAC PDU to the S-eNB, where the MAC PDU is
  • the related information may include: an identifier of the SCell, an identifier of a HARQ entity corresponding to the foregoing MAC PDU, a number of a HARQ process corresponding to the foregoing MAC PDU, a new data indication NDI, and a redundancy version RV. It should be noted that the related information of the foregoing MAC PDU is not included in the DCI in step 1.
  • Step 3 After receiving the MAC PDU sent by the P-eNB in step 2, the S-eNB sends the received MAC PDU to the UE through the corresponding HARQ process and the PDSCH (for bearer data). At the same time, since the data is newly transmitted data, the S-eNB buffers the data.
  • Step 4 The UE performs HARQ feedback according to the data in the received PDSCH. If the data decoding succeeds in feeding back the ACK, if the data decoding fails to feed back the NACK, the UE feeds back the CQI of the SCell according to the configuration on the network side.
  • Step 5 The P-eNB receives and decodes the UCI of the corresponding PUCCH bearer on the SCell of the UE according to the scheduling information in the DCI received in the step 1, and the P-eNB transfers the UCI to the S- through the inter-base station interface.
  • the eNB informs the S-eNB that the UCI corresponds to the SCell.
  • the UCI in this implementation example may include one or more of the following: CQI, HARQ feedback information corresponding to the HARQ process.
  • the P-eNB receives the HARQ feedback related information, if the HARQ process feedback is an ACK, the P-eNB confirms that the data transmission of the HARQ process is successfully sent, and the P-eNB may notify the S-eNB of the indication that the data transmission is successful ( See step 9), and inform the S-eNB that the cell corresponding to the HARQ process is the foregoing SCell; if the HARQ process feedback is NACK or DTX, it is confirmed that the data transmission of the HARQ process is failed, and the P-eNB may perform HARQ on the data.
  • the P-eNB may notify the S-eNB of the indication of the data transmission failure (see step 9), and inform the P-eNB that the indication corresponds to the foregoing SCell, and the P-eNB may also Select RLC retransmission or retransmission of the MAC PDU for the data that failed to be transmitted (see step 10).
  • Step 6 If the S-eNB receives the UCI in the step 5 as the CQI, the S-eNB adjusts the scheduling and configuration of the downlink data according to the CQI; if the S-eNB receives the UCI in the step 5 as the HARQ feedback corresponding to the HARQ process.
  • the information if the P-eNB indicates the retransmission information of the HARQ process, the S-eNB retransmits the data of the HARQ process according to the indication of the P-eNB (step 6b in the figure), and confirms as in step 1.
  • the DCI corresponding to the data is used for retransmission of the data, and the DCI is transmitted to the P-eNB through the inter-base station interface (step 6a in the figure), and the P-eNB is informed that the DCI is corresponding to the SCell, and the S-eNB receives the P.
  • the eNB reassembles the MAC PDU and forwards the UE to complete the HARQ retransmission.
  • Step 7 After receiving the retransmission data, the UE performs HARQ merge decoding, and the data decoding succeeds. Feedback ACK, data decoding failure feedback NACK.
  • Step 8 The P-eNB receives the UCI of the corresponding PUCCH bearer on the SCell of the UE according to the scheduling information in the DCI received in step 6, and performs decoding, and the P-eNB forwards the UCI to the S through the inter-base station interface. - eNB, and inform the S-eNB that the UCI corresponds to the SCell.
  • the UCI in this implementation example may include one or more of the following: CQI, HARQ feedback information corresponding to the HARQ process.
  • Step 9 If the P-eNB receives the HARQ feedback information as the ACK in step 8 and determines that the data transmission of the HARQ process is successful, the P-eNB may notify the S-eNB of the indication that the data transmission is successful, and notify the S-eNB of the success.
  • the indication corresponds to the foregoing SCell; if the P-eNB determines in step 8 that the data transmission of the HARQ process fails, and the P-eNB determines not to perform HARQ retransmission on the data, the P-eNB may notify the S-eNB of the indication of the data transmission failure. And specifying to inform the S-eNB that the failure indication corresponds to the foregoing SCell.
  • Step 10 If the S-eNB receives the indication that the data transmission sent by the P-eNB is successful according to step 9, the S-eNB may release the buffered related data; if the S-eNB receives the data transmission sent by the P-eNB according to step 9. The indication of failure, and the P-eNB indicates that no HARQ retransmission is performed, the S-eNB may release the cached related data.
  • the embodiment of the present invention provides a base station 10, which is applied to a cross-base station carrier aggregation scenario.
  • the Scell is on the base station 10
  • the Pcell is on the other base station 20.
  • 10 is a schematic diagram of a structure of a base station according to the embodiment of the present invention.
  • the base station 10 may include:
  • the sending unit 11 is configured to: send the DCI corresponding to the data to be transmitted to the UE by the SCell of the base station 10 to the other base station 20 through the inter-base station interface.
  • the receiving unit 12 is configured to receive, by the inter-base station interface, a MAC PDU sent by another base station 20.
  • the MAC PDU corresponds to data to be transmitted to the UE by the SCell of the base station 10, and the MAC PDU is DCI corresponding to the data by another base station 20.
  • the transmission opportunity of the SCell is allocated to the logical channel or the logical channel group corresponding to the data, and then the data in the logical channel or the logical channel group corresponding to the data is assembled.
  • the sending unit 11 is further configured to: send the MAC PDU received by the receiving unit 12 to the UE.
  • the obtaining unit 13 is configured to: obtain feedback information by using a HARQ entity corresponding to the SCell in the base station 10.
  • the DCI may include: an identifier of the SCell corresponding to the data, an identifier of the HARQ entity corresponding to the data, a number of the HARQ process corresponding to the data, an NDI, an RV, and the following Item or multiple: MCS, TBS, number of PRBs, frequency and time domain locations where the PRB is located, DAI, CCE location, total number of CCEs, identity of the UE corresponding to the data, logical channel or logical channel group corresponding to the data .
  • the base station 10 provided by the embodiment of the present invention is used to implement the data transmission method provided by the embodiment shown in FIG. 2 of the present invention.
  • the base station 10 is used to implement the data transmission method provided by the embodiment shown in FIG. 2 of the present invention.
  • For the working process and working principle of each unit in the embodiment of the present invention refer to the description in the method embodiment shown in FIG. 2 above. , will not repeat them here.
  • the embodiment of the present invention further provides a base station 20, which is applied to a cross-base station carrier aggregation scenario.
  • the Scell is located on another base station 10
  • the Pcell is on the base station 20, which is provided by the embodiment of the present invention.
  • the base station 20 is configured to perform the data transmission method provided in the foregoing embodiment of the present invention.
  • FIG. 9 it is a schematic structural diagram of another base station according to an embodiment of the present invention.
  • the base station 20 may include:
  • the receiving unit 21 is configured to: receive, by the inter-base station interface, a DCI corresponding to data to be transmitted by the another base station 10 to be transmitted to the UE by the SCell of another base station 10.
  • the processing unit 22 is configured to allocate the transmission opportunity of the SCell to the logical channel or the logical channel group corresponding to the data according to the DCI received by the receiving unit 21, and then assemble the data in the logical channel or the logical channel group corresponding to the data.
  • MAC PDU
  • the sending unit 23 is configured to: send, by the inter-base station interface, the MAC PDU obtained by the processing unit 22 to another base station 10, and trigger another base 10 to send the MAC PDU to the UE, and then pass the HARQ entity of the corresponding SCell in the other base station 10. Get feedback.
  • the foregoing DCI may include: SCell corresponding to the data.
  • the base station 20 provided by the embodiment of the present invention is used to implement the data transmission method provided by the embodiment shown in FIG. 3 of the present invention.
  • the base station 20 provided by the embodiment of the present invention is used to implement the data transmission method provided by the embodiment shown in FIG. 3 of the present invention.
  • the base station 10 and the base station 20 provided by the foregoing two embodiments of the present invention, the Scell on the base station 10 and the Pcell on the base station 20 form a carrier aggregation.
  • the base station 10 will transmit the data.
  • the DCI corresponding to the data is sent to the base station 20 through the inter-base station interface.
  • the base station 20 assembles the data to be transmitted into the corresponding MAC PDU according to the received DCI, and then sends the data to the base station 10, and the base station 10 sends the MAC PDU to the UE, and transmits the MAC PDU to the UE.
  • the HARQ entity in the 10 obtains the feedback information of the data transmission; the above-mentioned technical solution realizes the cross-base station carrier aggregation, and realizes that the user plane data of the UE interacts between different base stations in the carrier aggregation scenario.
  • the embodiment of the present invention further provides a base station 30, which is applied to a cross-base station carrier aggregation scenario.
  • the Scell is on the base station 30, and the Pcell is on the other base station 40, which is provided by the embodiment of the present invention.
  • the base station 30 is configured to perform the data transmission method provided by the foregoing embodiment shown in FIG. 4, as shown in FIG. 10, which is a schematic structural diagram of another base station according to an embodiment of the present invention.
  • the base station 30 may include:
  • the sending unit 31 is configured to: send the DCI corresponding to the data to be transmitted to the UE by the SCell of the base station 30 to the other base station 40 through the inter-base station interface.
  • the receiving unit 32 is configured to: receive, by using the inter-base station interface, a MAC PDU sent by another base station 40 and related information of the MAC PDU.
  • the MAC PDU corresponds to data to be transmitted to the UE by the SCell of the first base station, and the MAC PDU is DCI corresponding to the data by another base station 40.
  • the sending unit 31 is further configured to: send the MAC PDU to the UE according to the related information of the MAC PDU received by the receiving unit 32.
  • the DCI includes one or more of the following: the identifier of the SCell corresponding to the data, the identifier of the HARQ entity corresponding to the data, the number of the MCS, the TBS, the PRB, and the location of the PRB.
  • the base station 10 provided by the embodiment of the present invention is used to implement the data transmission method provided by the embodiment shown in FIG. 4 of the present invention.
  • the base station 10 provided by the embodiment of the present invention is used to implement the data transmission method provided by the embodiment shown in FIG. 4 of the present invention.
  • the processing unit 42 is configured to: according to the receiving unit 41, receive the DCI, allocate the transmission opportunity of the SCell to the logical channel or the logical channel group corresponding to the data, and assemble the data in the logical channel or the logical channel group corresponding to the data to obtain the MAC. Information about the PDU and the MAC PDU.
  • the sending unit 43 is configured to: send information about the MAC PDU and the MAC PDU obtained by the processing unit 42 to another base station 30 through the inter-base station interface, and trigger another base station 30 to send the MAC PDU according to the related information of the MAC PDU.
  • UE wherein the MAC PDU is related
  • the information includes: an identifier of the SCell, an identifier of the HARQ entity corresponding to the MAC PDU, a number of the HARQ process corresponding to the MAC PDU, a new data indication NDI, and a redundancy version RV.
  • the obtaining unit 44 is configured to: obtain feedback information by using a HARQ entity corresponding to the SCell in the base station 40.
  • the DCI includes one or more of the following: the identifier of the SCell corresponding to the data, the identifier of the HARQ entity corresponding to the data, the number of the MCS, the TBS, the PRB, and the location of the PRB. Frequency and time domain location, DAI, CCE location, total number of CCEs, identity of the user equipment UE corresponding to the data, logical channel or logical channel group corresponding to the data; and the number of the HARQ process corresponding to the data is not included in the DCI , NDI and RV.
  • the base station 40 provided by the embodiment of the present invention is used to implement the data transmission method provided by the embodiment shown in FIG. 5 of the present invention.
  • the base station 40 provided by the embodiment of the present invention is used to implement the data transmission method provided by the embodiment shown in FIG. 5 of the present invention.
  • the base station 30 and the base station 40 provided by the foregoing two embodiments of the present invention, the Scell on the base station 30 and the Pcell on the base station 40 form a carrier aggregation.
  • the base station 30 will transmit the data.
  • the DCI corresponding to the data is sent to the base station 40 through the inter-base station interface.
  • the base station 40 assembles the data to be transmitted into the corresponding MAC PDU according to the received DCI, and then sends the data to the base station 30, and the base station 30 sends the MAC PDU to the UE, and transmits the MAC PDU to the UE.
  • the HARQ entity in 40 obtains feedback information of data transmission.
  • the embodiment of the invention further provides a storage medium.
  • the storage medium may be set as a program code storing an embodiment step of a method for performing any of the above data transmission.
  • the storage medium is also arranged to store program code for the steps of the embodiment of the method for performing any of the above described data transfers.
  • the foregoing storage medium may include, but is not limited to, a USB flash drive, a read-only memory (ROM), and a random access memory (RAM, Random).
  • ROM read-only memory
  • RAM random access memory
  • the processor executes the program code of the step of the embodiment of the method for any one of the foregoing data transmission according to the stored program code in the storage medium.
  • the examples in the embodiments of the present invention may be referred to the examples in the foregoing embodiments of the data transmission, and the examples in the optional implementation manners.
  • the base station embodiments described above are merely illustrative.
  • the division of units is only a logical function division, and the actual implementation may have another division manner.
  • the units shown or discussed may be connected to each other through some interface, and may be in electrical, mechanical or other form.
  • Each of the above units may or may not be physically separate, and may or may not be a physical unit. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.
  • each functional unit in each embodiment of the present invention may be integrated into one processing module, or each unit may be a single physical module, or two or more units may be integrated into one module.
  • the above integrated modules can be implemented in the form of hardware or in the form of hardware plus software function modules.
  • all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve.
  • the device/function module/functional unit in the above embodiment can be implemented by using a general-purpose computing device. Now, they can be concentrated on a single computing device or distributed over a network of multiple computing devices.
  • the device/function module/functional unit in the above embodiment When the device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium.
  • the above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
  • the Scell of the first base station and the Pcell of the second base station are used for carrier aggregation.
  • the first base station sends the DCI corresponding to the data to be transmitted to the first through the inter-base station interface.
  • the second base station, the second base station is assembled into a corresponding MAC PDU according to the received DCI data to be transmitted to the first base station, and the first base station sends the MAC PDU to the UE, and corresponds to the first base station or the second base station.
  • the HARQ entity of the SCell obtains the feedback information of the data transmission.

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  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé et un dispositif de transmission de données. Une cellule secondaire Scell sur une première station de base et une cellule primaire Pcell sur une seconde station de base constituent une agrégation de porteuses. Le procédé de transmission de données comprend les étapes suivantes : lorsque des données d'un UE doivent être transmises au moyen d'une cellule secondaire Scell, l'envoi, par une première station de base, à une seconde station de base, de DCI correspondant aux données devant être transmises par l'intermédiaire d'une interface entre les stations de base ; l'encapsulage, par la seconde station de base, des données devant être transmises dans une PDU MAC correspondante conformément aux DCI reçues, puis l'envoi de celles-ci à la première station de base ; et l'envoi, par la première station de base, de la PDU MAC à l'UE, et l'acquisition d'informations de rétroaction concernant l'envoi de données au moyen d'une entité HARQ, correspondant à la cellule secondaire SCell, dans la première station de base ou la seconde station de base.
PCT/CN2017/074570 2016-03-14 2017-02-23 Procédé et dispositif de transmission de données Ceased WO2017157151A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115173999A (zh) * 2017-11-17 2022-10-11 中兴通讯股份有限公司 用于处理控制信息的系统和方法

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020025053A1 (fr) * 2018-08-03 2020-02-06 华为技术有限公司 Procédé et dispositif de reprise après un échec de communication
CN111130724B (zh) * 2018-10-31 2021-05-25 展讯通信（上海）有限公司 V2x传输的反馈方法、装置及用户设备
KR102777747B1 (ko) 2019-05-09 2025-03-11 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 리소스 구성 방법 및 장치
CN112153689B (zh) * 2019-06-29 2022-09-02 华为技术有限公司 一种数据发送方法及装置
CN110809868B (zh) * 2019-09-19 2022-10-25 北京小米移动软件有限公司 Harq反馈传输方法及装置、通信设备及存储介质
CN110971284B (zh) * 2019-11-15 2021-05-11 深圳职业技术学院 一种终端协作的高频段物联网数据传输方法
WO2021155574A1 (fr) * 2020-02-07 2021-08-12 Oppo广东移动通信有限公司 Procédé de traitement de canal, appareil, dispositif et support de stockage
US11677509B2 (en) * 2020-02-21 2023-06-13 Qualcomm Incorporated Acknowledgment feedback techniques in wireless communications with large propagation delays

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103503350A (zh) * 2011-05-06 2014-01-08 Lg电子株式会社 在支持载波聚合的无线接入系统中调节传输定时的方法和设备
CN103518407A (zh) * 2011-05-27 2014-01-15 株式会社泛泰 在无线通信系统中执行上行链路同步的设备和方法
CN104160731A (zh) * 2011-12-22 2014-11-19 交互数字专利控股公司 用于动态频谱分配的方法、设备和系统
US20150215079A1 (en) * 2014-01-29 2015-07-30 Innovative Technology Lab Co., Ltd. Method and apparatus for transmitting harq ack/nack

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015113293A1 (fr) * 2014-01-29 2015-08-06 华为技术有限公司 Procédé, dispositif et système de transmission de données

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103503350A (zh) * 2011-05-06 2014-01-08 Lg电子株式会社 在支持载波聚合的无线接入系统中调节传输定时的方法和设备
CN103518407A (zh) * 2011-05-27 2014-01-15 株式会社泛泰 在无线通信系统中执行上行链路同步的设备和方法
CN104160731A (zh) * 2011-12-22 2014-11-19 交互数字专利控股公司 用于动态频谱分配的方法、设备和系统
US20150215079A1 (en) * 2014-01-29 2015-07-30 Innovative Technology Lab Co., Ltd. Method and apparatus for transmitting harq ack/nack

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115173999A (zh) * 2017-11-17 2022-10-11 中兴通讯股份有限公司 用于处理控制信息的系统和方法
CN115173999B (zh) * 2017-11-17 2024-03-29 中兴通讯股份有限公司 用于处理控制信息的系统和方法

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