WO2021012727A1 - 数据传输方法、装置和存储介质 - Google Patents

数据传输方法、装置和存储介质 Download PDF

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Publication number
WO2021012727A1
WO2021012727A1 PCT/CN2020/085698 CN2020085698W WO2021012727A1 WO 2021012727 A1 WO2021012727 A1 WO 2021012727A1 CN 2020085698 W CN2020085698 W CN 2020085698W WO 2021012727 A1 WO2021012727 A1 WO 2021012727A1
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Prior art keywords
block
block coding
coding
information
control information
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PCT/CN2020/085698
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English (en)
French (fr)
Inventor
邢卫民
卢有雄
黄双红
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中兴通讯股份有限公司
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Publication of WO2021012727A1 publication Critical patent/WO2021012727A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0057—Block codes
    • H04L1/0058—Block-coded modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0061—Error detection codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0076—Distributed coding, e.g. network coding, involving channel coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]

Definitions

  • This application relates to a wireless communication network, for example, to a data transmission method, device, and storage medium.
  • the broadcast receiver does not feed back the confirmation information of the data packet (for example, Acknowledgement (ACK)/Non-Acknowledgement (NACK)).
  • the feedback function is also disabled in some cases, that is, like broadcast, the receiving end does not feed back the confirmation information of the data packet to the sending end.
  • blind retransmission technology can be used to retransmit the data packets, that is, multiple resources are used to continuously transmit the same data packet/transport block (TB) multiple times.
  • blind retransmission or TB-based retransmission is of no use to a receiving user terminal (User Equipment, UE), and some retransmitted code blocks (CB) are useless.
  • UE User Equipment
  • CB code blocks
  • a TB1 is blindly retransmitted twice, assuming that TB1 contains 4 CBs. Assuming that when UE1 receives the first transmission, CB1 to CB3 are received correctly, and only CB4 is received incorrectly, then when receiving the second blind retransmission packet, the retransmitted CB1 to CB3 are of no use to UE1.
  • each CB may need to be retransmitted to meet the needs of different receiving UEs, but from the perspective of a receiving UE, it is useless for a retransmitted data packet to have many CBs. of. Therefore, how to improve the reliability of data packet retransmission is an urgent problem to be solved.
  • the present application provides a data transmission method, device, and storage medium, which enhance the reliability of retransmission of the first data unit.
  • An embodiment of the application provides a data transmission method, including:
  • An embodiment of the application provides a data transmission method, including:
  • An embodiment of the application provides a data transmission device, including:
  • An encoding module configured to perform block encoding on at least one block encoding input block in the first data unit by using a block encoding parameter set corresponding to the current transmission to generate a corresponding block encoding output block;
  • the first sending module is configured to send a second data unit including at least one output block of the block encoding to the receiving end.
  • An embodiment of the application provides a data transmission device, including:
  • the first receiving module is configured to receive a second data unit including at least one block encoding output block
  • a determining module configured to determine a block coding parameter set corresponding to the second data unit
  • the decoding module is configured to perform block decoding on the block coded output block to recover the block coded input block.
  • An embodiment of the present application provides a storage medium that stores a computer program, and when the computer program is executed by a processor, any data transmission method in the embodiments of the present application is implemented.
  • FIG. 1 is a schematic diagram showing a division of TB according to an embodiment of the present application.
  • FIG. 2 is a flowchart of a data transmission method provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of the relationship between SCI and SCI data information provided by an embodiment of the present application
  • FIG. 4 is a schematic diagram of another relationship between SCI and SCI data information provided by an embodiment of the present application.
  • FIG. 5 is a flowchart of another data transmission method provided by an embodiment of the present application.
  • FIG. 6 is a structural block diagram of a data transmission device provided by an embodiment of the present application.
  • FIG. 7 is a structural block diagram of another data transmission device provided by an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a device provided by an embodiment of the present application.
  • UpLink uplink communication
  • DownLink downlink communication
  • SideLink refers to the direct transmission between UEs.
  • SideLink resources include device-to-device (D2D) communication, and vehicle-X (Vehicle to Device) communication. Anything/Everything, V2X) communication, etc.
  • D2D device-to-device
  • V2X Vehicle to Device
  • one TB is blindly retransmitted.
  • LTE V2X transmits one TB twice, and NR V2X may perform more than two blind retransmissions.
  • the base station can also perform blind retransmission, and transmit broadcast, unicast and multicast services.
  • ACK/NACK A/N
  • CBG Code Block Group
  • the first multicast feedback method only feeds back NACK, that is, when a receiving UE receives a piece of multicast data, it will feed back NACK if the data is received incorrectly, and if the reception is correct, No feedback;
  • the second multicast feedback method only feedbacks ACK/NACK, that is, when a receiving UE receives a piece of multicast data, it will feedback NACK if the data is received incorrectly, and ACK if the reception is correct.
  • the feedback of unicast is similar to the second way of multicast, that is, receiving correct feedback ACK and receiving error feedback NACK.
  • TB-based retransmission is used in blind retransmission mode and TB-based A/N feedback retransmission mode, and these two modes are suitable for broadcast and multicast retransmission modes.
  • FIG. 1 is a schematic diagram showing a division of TB according to an embodiment of the present application.
  • a TB can contain a CRC information.
  • the sender usually divides the TB into multiple information blocks of equal length (Information Block), and each information block is coded separately . After the rate is matched and CRC is added, a CB is formed, and multiple CBs are cascaded and sent to the receiving end.
  • TB includes Cyclic Redundancy Check (CRC) bits.
  • CRC Cyclic Redundancy Check
  • the length of CRC of TB and CB is usually 24 bits (bit).
  • the CB CRC can check the correctness of the coding block. If the CB CRC check passes, it means that the CB is correct; otherwise, it means that the CB is a wrong CB.
  • the TB CRC can be used to check the correctness of the received TB. When the TB CRC fails the check at the receiving end, it indicates that the TB received error.
  • unicast ACK/NACK may be based on TB feedback, that is, the receiving end will give feedback on the reception of a TB, and retransmission is also a retransmission of a TB.
  • unicast can also be A/N feedback based on CBG.
  • a TB can include multiple CBGs, and a CBG includes one or more CBs.
  • the receiving end will give each CBG a feedback. If the feedback information corresponding to a CBG is NACK, it means that all CBs in the CBG need to be retransmitted, that is, the sender can retransmit the wrong CBG instead of the entire TB when retransmitting.
  • CBG-based feedback can reduce unnecessary retransmissions to a certain extent, but a CBG can also include multiple CBs, and multiple CBs are both correct and wrong, that is, CBG-based feedback is only reduced to a certain extent. Unnecessary retransmissions are not completely avoided.
  • the receiving conditions of multiple receiving ends are independent of each other, that is, the wrong CB or CBG is not the same and each receiving end feedbacks the CBG-based A/N, which will bring great feedback overhead, which can be considered CBG-based feedback is not suitable for multicast/broadcast.
  • the improved retransmission efficiency brought about by CBG-based feedback is not suitable for blind retransmission.
  • the receiving end will not feed back any information to the sending end. That is, blind retransmission or TB-based retransmission is useless for a receiving UE, some retransmitted CBs.
  • the embodiments of the present application provide a data transmission method to enhance the reliability of retransmission in the case of blind retransmission and A/N transmission based on TB or CBG.
  • FIG. 2 is a flowchart of a data transmission method provided in an embodiment of the present application. This embodiment is applicable to the case of encoding that enhances the reliability of retransmission.
  • This embodiment can be executed by the sending end.
  • the sending end may be a scheduling node (for example, a base station, an access point, etc.) or a user terminal (User Equipment, UE).
  • the method provided in this embodiment includes S120-S140.
  • S120 Perform block coding on at least one block coding input block in the first data unit by using a block coding parameter set corresponding to the current transmission to generate a corresponding block coding output block.
  • S140 Send a second data unit including at least one block encoding output block to the receiving end.
  • retransmission in order to ensure the reliability of data transmission, retransmission is an effective method. Compared with feedback-based retransmission, blind retransmission does not need to wait for feedback from the receiving end. It is suitable for broadcast services and has delay and reliability. Business with relatively high sexual requirements.
  • retransmission based on TB or CBG feedback also requires retransmission of the entire TB or CBG, which is widely used in communication systems.
  • the method in the embodiment of this application enhances the retransmission/blind retransmission of broadcast, unicast or multicast, and is suitable for scenarios of uplink and downlink transmission and sidelink transmission.
  • Block coding is used to encode a TB or CBG. Multiple block codes within the input block are coded to improve the reliability of retransmission.
  • the current transmission at the sending end includes at least one first data unit, where the first data unit is a transmission block TB or a coding block group CBG; each TB includes at least one CBG, and each CBG includes at least one CB.
  • each first data unit includes multiple block coding input blocks
  • block coding is performed on the multiple block coding input blocks in the first data unit using the block coding parameter set corresponding to the current transmission to generate corresponding Multiple block encoding output blocks
  • sending the second data unit including the multiple block encoding output blocks to the receiving end.
  • the sending end transmits the first data unit for the i-th time, and each first data unit contains N block coding output blocks, and uses the block coding parameter set corresponding to the i-th transmission to encode the N block coding input blocks as M(i) block-coded output blocks, and in the i-th transmission, a second data unit containing M(i) block-coded output blocks is sent to the receiving end.
  • the sending end when the sending end sends the second data unit to the receiving end, in order to ensure that the sending end can accurately send the second data unit to the corresponding receiving end.
  • the data transmission method also Including: receiving the control information corresponding to the current transmission from the scheduling node or the receiving end, and/or sending the control information corresponding to the current transmission.
  • the scheduling node may be a base station for configuring control information.
  • the sending end receives the control information corresponding to the i-th transmission from the scheduling node, and sends the control information corresponding to the i-th transmission to the receiving end.
  • control information includes: block coding control information corresponding to the current transmission, and the block coding control information is used to determine the information of the block coding parameter set corresponding to the second data unit in the current transmission.
  • each block encoding parameter set includes: multiple block encoding vectors or multiple sets of block encoding parameters, and each block encoding vector or each set of block encoding parameters is used to encode multiple block encoding input blocks into one block Encoding output block; or, the block encoding parameter set corresponding to the current transmission corresponds to a block encoding matrix, one row or one column of the block encoding matrix is used to encode multiple block encoding input blocks into one block encoding output block.
  • the block coding parameter set corresponding to a first data unit currently transmitted may include: multiple block coding vectors or multiple sets of block coding parameters.
  • a block coding vector or block coding parameter is used to encode multiple block coding input blocks into one block coding output block.
  • the block coding parameter set corresponding to the current transmission corresponds to a block coding matrix, and one row or one column of the block coding matrix is used to encode multiple block coding input blocks into one block coding output block.
  • the block coding output block corresponds to the number of rows of the block coding matrix.
  • the block coding output block corresponds to the number of columns of the block coding matrix.
  • the block coding parameter set corresponding to a first data unit in the i-th transmission includes M(i) block coding vectors or M(i) block coding parameters, and a block coding vector or a set of block coding parameters is used to N block coding input block coding is a block coding output block.
  • the block coding parameter set corresponding to the i-th transmission corresponds to a block coding matrix.
  • the data transmission method further includes: configuring or pre-configuring the mapping relationship between the block coding parameter set and the transmission order.
  • a mapping relationship is established between the block coding parameter set and the transmission order.
  • the base station may configure the mapping relationship between the block coding parameter set and the transmission order; in one embodiment, when the UE is not within the coverage of the base station Next, the base station may pre-configure the mapping relationship between the block coding parameter set and the transmission order.
  • the mapping relationship between the block coding parameter set and the transmission order may be predefined through a protocol.
  • the block coding control information includes the transmission order corresponding to the current transmission.
  • the transmission order includes a redundancy version (Redundancy Version, RV) or the number of transmissions currently transmitted.
  • RV Redundancy Version
  • the mapping relationship between the transmission order and the block coding parameter set indicates the number of transmissions or the redundancy version of the current transmission, and implicitly indicates the corresponding transmission Block coding control information.
  • the data transmission method further includes: configuring or pre-configuring a mapping relationship between a block coding sequence number and the block coding parameter set, and the block coding sequence number corresponds to the block coding parameter set one-to-one.
  • the block coding control information includes: the block coding sequence number.
  • a mapping relationship is established between the block coding parameter set and the block coding sequence number.
  • the mapping relationship between the coding sequence number and the block coding parameter set may also be configured, pre-configured or predefined.
  • the mapping relationship between the block coding sequence number and the block coding parameter set, and the block coding sequence number indicates the block coding control information corresponding to the current transmission.
  • control information further includes: block coding enable indication information, and the block coding enable indication information is used to indicate whether block coding is enabled in the current transmission.
  • whether to enable block coding can be pre-defined, configured or pre-configured.
  • control information corresponding to the current transmission includes information for indicating whether block coding is enabled for the current transmission.
  • control information corresponding to a second data unit in the i-th transmission includes an indication for indicating whether block coding is enabled for the i-th transmission.
  • control information further includes at least one of the following: sender identifier, target receiver identifier or target receiver group identifier, Hybrid Automatic Repeat reQuest (HARQ) process number, new data indication (New Data Indication, NDI).
  • control information further includes indication information of the second data unit included in the current transmission, which is used to indicate the information of the second data unit included in the current transmission.
  • the data transmission method further includes: configuring or pre-configuring the correspondence between the maximum number of block coding input blocks in each first data unit and the length of each first data unit; or, configuring or pre-configuring Configure the number of block coding input blocks in each first data unit.
  • the maximum number of block coding input blocks in each first data unit may be predefined, configured, or preconfigured to avoid overflow of data in the first data unit.
  • the corresponding relationship between the maximum number of block coding input blocks in each first data unit and the length of each first data unit may also be predefined, configured, or pre-configured to avoid first The situation where the data in the data unit overflows.
  • the data transmission method further includes: determining the number of block coding input blocks contained in the first data unit; determining the number of columns or rows of the block coding matrix and the dimension of the block coding vector according to the number of block coding input blocks Or one of the number of elements of the block coding parameter.
  • one row or one column of the block coding matrix can encode multiple block coding input blocks into one block coding output block. After determining the number of block coding input blocks contained in the first data unit, the input block can be input according to the block coding. The number of blocks determines the number of columns or rows of the block coding matrix.
  • each block coding vector or each set of block coding parameters can encode multiple block coding input blocks into one block coding output block. After determining the number of block coding input blocks contained in the first data unit, Determine the dimension of the block coding vector or the number of elements of the block coding parameter according to the number of block coding input blocks.
  • the block encoding input block is: at least one original information block obtained after the first data unit is divided, or at least one check information block obtained by adding CRC bits to one or more original information blocks, or , At least one channel coding information block obtained after performing channel coding on one or more check information blocks, or at least one matching information block obtained after performing rate matching on one or more channel coding information blocks.
  • the second data unit includes: adding CRC bits to each block encoding output block to obtain a check information block, performing channel coding on the check information block to obtain a channel coding information block, and performing a rate on the channel coding information block
  • the matching information block is obtained by matching, and the matching information block is concatenated to obtain the concatenated information block; or, channel coding the check information block to obtain the channel coding information block, and performing rate matching on the channel coding information block to obtain the matching information block.
  • the information blocks are concatenated to obtain a concatenated information block; or, the channel coding information block is rate-matched to obtain a matching information block, and the matching information blocks are concatenated to obtain a concatenated information block; or, the matching information blocks are concatenated to obtain a concatenated information block.
  • Union information block
  • the second data unit includes: adding CRC bits to each block coding output block to obtain a correction Check the information block, perform channel coding on the check information block to obtain a channel coded information block, perform rate matching on the channel coded information block to obtain a matching information block, and concatenate the matching information blocks to obtain a concatenated information block.
  • the second data unit includes: a check information block Channel coding is performed to obtain a channel coding information block, rate matching is performed on the channel coding information block to obtain a matching information block, and the matching information blocks are concatenated to obtain a concatenated information block.
  • the second data unit includes: performing rate matching on the channel coding information block The matching information block is obtained, and the matching information block is cascaded to obtain the cascaded information block.
  • the second data unit includes: concatenating the matching information blocks to obtain Cascade information block.
  • the step of sending the first data unit from the sending end to the receiving end sequentially includes: determining whether the first data unit needs to be divided; when the size of the first data unit exceeds the division threshold T, the first data unit Perform pre-defined, configured or pre-configured segmentation to obtain multiple original information blocks; then add CRC bits to each original information block to obtain check information blocks; perform channel coding on each check information block separately to obtain channel coding Information block: Perform rate matching on each channel coding information block to obtain a matching information block; concatenate the matching information blocks to obtain a concatenated information block; send the concatenated information block to the receiving end.
  • the step of block encoding may be embedded after one of the steps of the sending end sending the first data unit to the receiving end.
  • the step of block coding is after the first data unit is divided, that is, block coding is performed on multiple original information blocks.
  • the TB needs to be divided into blocks.
  • the CRC length L of each block the entire TB is equally divided into k original information blocks, namely the block coding input block IB to be block-coded, expressed as IB 1 ,IB 2 ,...IB k , where k is equal to Rounded up.
  • the number of partitions k may also be predefined, configured, or preconfigured to divide the entire TB into k original information blocks.
  • each block encoding output block may also be obtained after block encoding of m original information blocks, where m ⁇ k can be equivalently understood as the coefficient of some IB in the block encoding equation is 0.
  • m ⁇ k can be equivalently understood as the coefficient of some IB in the block encoding equation is 0.
  • a linear coding matrix is shown below, where the elements of the matrix can be zero.
  • the channel coding may include Low Density Parity Check Code (LDPC), Convolutional Code (Turbo Code), Polar Code (Polar Code), etc.
  • LDPC Low Density Parity Check Code
  • Turbo Code Convolutional Code
  • Poly Code Polar Code
  • the step of block coding may be performed after adding CRC bits, that is, block coding of the check information block.
  • the step of block coding may be placed after channel coding, that is, block coding of the channel coding information block.
  • the entire TB is equally divided into k original information blocks, and then each original information block is checked and CRC bits are added, and channel coding is performed to generate the corresponding channel coding information block, and the channel coding information block Enter the blocks IB 1 , IB 2 ,...IB k as block codes.
  • Block coding k channel coding information blocks IB 1 , IB 2 ,...IB k to generate k block coding output blocks OB 1 , OB 2 ,...OB k .
  • Each block coding output block is obtained by block coding of m (m ⁇ k) channel coding information blocks. For example, using the block coding matrix shown below for block coding, some elements in the matrix can be zero.
  • block coding may use an exclusive OR operation.
  • one of the block coding output blocks of the block coding matrix in this embodiment can be expressed as: Assuming that the value of the matrix element can only be 0 or 1, then 0 means not participating in block coding, and 1 means participating in block coding.
  • the block encoding may adopt an exclusive OR operation, or may adopt other operation methods, which is not limited.
  • the values of the elements in the block coding matrix are not limited, and coding algorithms such as fountain codes and error codes can be used for calculation. Then rate matching is performed on the information blocks after each block encoding, and then the information blocks after the rate matching are cascaded, and the cascaded information blocks are sent to the receiving end.
  • the step of block coding is placed after rate matching, that is, multiple matching information blocks are block-coded, and then the block-coded information blocks are concatenated.
  • block coding is to use a set of block coding parameters or a block coding vector to perform operations on N original information blocks of equal length to obtain a block coding output block, that is, use a different set of block coding parameters or a block
  • the coding vector can obtain different block coding output blocks.
  • a set of block coding parameters is equivalent to a row of block coding vectors of the block coding matrix in the above embodiment, and is also equivalent to a block coding equation.
  • This set of block coding parameters includes both relevant coefficients and correlations. Operation.
  • M block coding parameters can encode N original information blocks (ie, block coding input blocks) into M block coding output blocks, which is equivalent to using a matrix of M rows and N columns to convert N original information blocks in the above embodiment
  • the encoding is M block encoding output blocks.
  • a block coding input block can be an original information block obtained after the first data unit is divided, or a check information block with CRC bits added, or a channel coding information block after channel coding, or it can be Matching information block after rate matching.
  • a block coding input block may contain multiple original information blocks divided by the first data unit, or multiple check information blocks with segmented CRC bits added, or multiple channel-coded input blocks.
  • the channel coding information block can also include multiple rate matching matching information blocks, that is, a block coding input block can be a segment group.
  • a TB may contain 16 CBs, and every two CBs are a CBG, and then a block coding input block may be a CBG, and the block coding performed is the block coding between multiple CBGs in a TB.
  • one block coding input block may be one CB or multiple CBs (ie, one CBG).
  • the original information block after one or more first data units is divided, the check information block after the segment CRC is added, the channel coding information block after channel coding, or the rate matching information block
  • the information block to be coded composed of matching information blocks is collectively referred to as a block coding input block.
  • the TB contains 4 IBs (respectively: IB1, IB2, IB3, and IB4). If device C receives IB1 correctly, IB2 and IB4, and device D receives IB1, IB2 and IB3 correctly; if the TB-based retransmission mechanism in the related technology is followed, it will continue to retransmit IB1 to IB4. Take device C receiving IB3 as an example, can it be retransmitted? The correct reception during transmission depends only on whether the IB3 of the second transmission can be received correctly.
  • OB1 to OB4 are as follows. For device C, it can be restored by receiving the correct one of OB1 to OB4 IB3 is output, and for device D, IB4 can be recovered only by receiving the correct one of OB1, OB3 and OB4, which greatly improves the reliability of retransmission.
  • the block coding matrix may be a full-rank matrix, as shown below, and the operation rule may be an exclusive OR.
  • the operation rule may be an exclusive OR.
  • the corresponding downlink control information (DCI) or high-level instruction of the current transmission carries block coding control information .
  • the block coding control information carried in the DCI or high-level instruction corresponding to the current transmission is received.
  • the block coding control information is carried in the direct link control information (SideLink Control Information, SCI).
  • it further includes receiving the block coding control information carried in the DCI or high-level instruction corresponding to the current transmission.
  • the control information corresponding to the first data unit may be carried in DCI or high-level signaling (For example, in radio resource control (Radio Resource Control, RRC) signaling).
  • RRC Radio Resource Control
  • the control information corresponding to the first data unit can be configured by the base station, that is, the base station can be configured in DCI or higher layer signaling. Indicates the control information used by the UE.
  • control information may carry block coding control information.
  • the block coding parameter set corresponding to a first data unit may be implicitly or explicitly carried in the control information.
  • block coding control information is carried in the SCI, where the SCI may be a whole or may include multiple parts (for example, the SCI is divided into the first part of the SCI and the second part of the SCI).
  • the UE performs SideLink transmission, it also transmits the SCI corresponding to the transmission.
  • the UE may receive control information sent by other devices, for example, DCI or other signaling (such as RRC signaling, broadcast signaling, etc.) sent by the base station, and the control information contains instructions to the Block coding control information of the UE.
  • the UE when it sends a second data unit, it may indicate the block coding control information corresponding to the TB in the SCI.
  • uplink or downlink control information may be carried in downlink signaling.
  • the downlink signaling may be DCI sent by the base station or other signaling (RRC signaling, broadcast signaling, etc.) ).
  • the UE may receive the downlink signaling sent by the base station, and carry uplink control information in the downlink instruction.
  • the uplink control information includes block coding control information indicated to the UE, and the block coding control information Used to determine the block coding parameter set used by the UE in uplink transmission.
  • the base station in the case of sending a second data unit to the receiving end, the base station also sends downlink signaling corresponding to the second data unit, where the downlink signaling includes downlink control information, and may The downlink control information indicates the block coding control information corresponding to the second data unit.
  • the base station may be a scheduling node.
  • one TB in the process of SideLink communication, one TB can be sent, and different redundancy versions can be selected for sending, so that the receiving end can perform HARQ combined reception.
  • multiple RV versions (such as RV0, RV2, RV1 or RV3) can be transmitted multiple times.
  • the redundancy version corresponding to the first transmission is RV0
  • the redundancy version corresponding to the second transmission is RV2
  • the redundancy version corresponding to the third transmission is RV1
  • the redundancy version corresponding to the fourth transmission is RV3
  • the redundancy version corresponding to the fifth transmission returns to RV0, and so on.
  • the SideLink signal may include two parts: SCI and corresponding data information (data).
  • FIG. 3 is a schematic diagram of a relationship between SCI and SCI data information provided in an embodiment of the present application. As shown in Figure 3, each SideLink data message has a corresponding SCI.
  • FIG. 4 is a schematic diagram of another relationship between SCI and SCI data information provided by an embodiment of the present application. As shown in Figure 4, different SideLink data information can also correspond to the same SCI. In the embodiments of the present application, RV, block coding division, etc. are all for the SideLink data information.
  • the control information can be carried on a control channel (CCH) or a data channel (sharing channel, SCH), and the SideLink data information can be carried on a data channel.
  • CCH control channel
  • SCH shared channel
  • vehicle A broadcasts a first data unit (for example, TB or CBG) to other nearby vehicles as an example.
  • a first data unit for example, TB or CBG
  • the receiving end does not provide feedback to the sending end.
  • vehicle A chooses to blindly retransmit the TB, assuming that the TB is transmitted three times, and the TB contains N CBs after segmentation . If a block coding input block IB participating in block coding includes one CB, where all CBs have the same length, that is, there are N block coding input blocks participating in block coding.
  • the first transmission does not use block coding, that is, after N IBs are cascaded, they are sent to the receiving end.
  • the block coding matrix X corresponding to the first time is a unit square matrix of order N; and the SCI corresponding to the TB indicates that the RV version corresponding to the TB is RV0, and RV0 corresponds to the block coding parameter set X.
  • the block coding matrix used for the second time is an N-order square matrix, and the matrix is a row/column full-rank matrix; and the SCI corresponding to the TB indicates that the RV version corresponding to the TB is RV2, and RV2 corresponds to the block coding parameter set Y.
  • the third transmission is performed on a SideLink resource.
  • the block coding parameter set corresponding to the third transmission is Z, and the SCI corresponding to the TB indicates that the RV version corresponding to the TB is RV1, that is, RV1 corresponds to the block coding parameter set Z.
  • the block coding parameter set Z used in the third transmission may be the same as the block coding parameter set Y, that is, in all retransmissions, different RV versions use the same block coding parameter set.
  • the receiving end of vehicle B, C after receiving the broadcast of vehicle A, according to the RV version indication carried in the SCI and the corresponding relationship between RV and the block coding parameter set, determine the block coding parameter set currently used for transmission, and according to the block coding The parameter set and the previously received correct CB are decoded to recover the original data, that is, the original information block is recovered.
  • the sending end or the receiving end determines the block coding parameter set used for the current transmission according to the correspondence between the RV and the block coding parameter set, it also includes determining the number of block coding input blocks contained in the current TB or the first data unit , That is, the dimension of a block coding matrix is related to the number of block coding input blocks.
  • the correspondence between the RV and the block coding parameter set may be predefined by a protocol, may also be configured by the network (for example, a base station, other high-level entities), or determined by a network preconfiguration.
  • the block coding enable indication information of whether to enable block coding can be set in the SCI. When the block coding enable indication information is enabled, the block coding parameter set corresponding to the RV can be used; If the encoding enable indication information is disabled, the block encoding parameter set corresponding to the RV cannot be used.
  • a block coding input block participating in block coding includes one CB.
  • M 1 CBGs include CB
  • the block coding operation is performed in each of the M CBGs.
  • the block coding coefficient corresponding to the CB in the CBG may have a non-zero value, and the coefficients of other CBGs may all be zero.
  • the data transmission method applied to the sender in the embodiment is applied to each CBG respectively. That is, a first data unit is divided into multiple sub-data units, each sub-data unit includes multiple IBs, and block coding is performed between the IBs of the sub-data units.
  • the number of segments after block coding may not be equal to the number N of block coding input blocks, for example, the block coding matrix may not be a square matrix.
  • the foregoing process is also applicable to multicast and unicast transmission performed by the device.
  • multicast and unicast can disable the receiver feedback, and blind retransmission can still be used during retransmission.
  • Fig. 5 is a flowchart of another data transmission method provided by an embodiment of the present application. This embodiment is applicable to the case of decoding a block coded output block. As shown in FIG. 5, the method of this embodiment includes S220-S260.
  • S220 Receive a second data unit including at least one block encoding output block.
  • S240 Determine a block coding parameter set corresponding to the second data unit.
  • S260 Perform block decoding on the block coded output block, and restore the block coded input block.
  • performing block decoding on the block coded output block to recover the block coded input block includes: based on at least one second data unit received this time, and at least one second data unit received this time Block decoding to recover the corresponding block coded input block; the second data unit received this time includes at least one successfully decoded block coded input block, and/or at least one successfully decoded block coded output block.
  • the receiving end when performing block decoding, not only uses one or more OBs included in the second data unit received this time, but also uses the OB or IB that was previously received correctly.
  • the receiving correct/error of a second data unit refers to performing block decoding based on previous receptions to obtain the IB information sent by the sender, and judging the correctness or error of the entire first data unit based on the correctness/error of the restored IB .
  • each time the first data unit is transmitted the RV version and block coding parameter set used may be different.
  • device A sends RV0 for the first time and does not perform block coding for the first time.
  • the first transmission includes four IBs of RV0, IB1 ⁇ IB4, the receiving end B successfully receives IB1 ⁇ IB3 for the first time, and the sending end
  • the second blind retransmission uses RV2 and uses block coding, as shown below:
  • the receiving end B only receives the correct OB1
  • you want to restore IB4 you need to calculate the IB1 ⁇ IB3 and OB1 that were originally received correctly to obtain IB4, but the receiving end B receives the correct IB1 ⁇ IB3 is the RV0 version, and OB1 is RV2
  • the versions IB1 to IB4 are obtained after block coding, and the receiving end needs to generate the RV2 version of IB1 to IB3 according to the correct RV0 version of IB1 to IB3, so as to perform block decoding with OB1 to recover IB4.
  • the same RV version and different block coding parameter sets are used for each transmission of the first data unit.
  • the retransmission always uses the IB of the RV0 version for block coding, so the receiving end does not need to process the received correct IB to generate other RV versions of IB, thereby reducing the decoding complexity of the receiving end.
  • this method can be used when the retransmission is less than/equal to a code rate threshold, or a low-version or low-capability UE adopts this method to reduce the complexity of the UE.
  • each transmission of the first data unit uses a different RV version and the same block coding parameter set, so that the receiving end can perform HARQ combining on the same OB with different transmission times.
  • the data transmission method further includes: receiving control information corresponding to the current transmission, or sending control information corresponding to the current transmission.
  • control information includes: block coding control information corresponding to the current transmission, and the block coding control information is used to determine the information of the block coding parameter set corresponding to each second data unit in the current transmission.
  • the data transmission method further includes: configuring or pre-configuring the mapping relationship between the block coding parameter set and the transmission order.
  • the block coding control information includes: a transmission sequence corresponding to the current transmission.
  • the transmission sequence includes: a redundancy version or the number of transmissions currently transmitted.
  • the data transmission method further includes: configuring or pre-configuring the mapping relationship between the block coding sequence number and the block coding parameter set, and the block coding sequence number corresponds to the block coding parameter set one to one.
  • the block coding control information includes: a block coding sequence number.
  • control information the block coding control information, the transmission order, and the block coding sequence number are described in the foregoing embodiment, and will not be repeated here.
  • the DCI or high-level command corresponding to the current transmission carries block coding control information.
  • the block coding control information is carried in the DCI or high-level command corresponding to the current transmission sent.
  • the block coding control information carried in the direct link control information SCI is received.
  • the method further includes receiving the block coding control information carried in the DCI or high-level instruction corresponding to the current transmission.
  • a method of indicating once the block coding parameter set corresponding to the retransmission of the second data unit is described.
  • different RV versions of a first data unit have respective corresponding block coding parameter sets, and the corresponding relationship between this RV and the block coding parameter set is predefined by the protocol, or the corresponding relationship is configured by the base station or the network , Or pre-configure this correspondence.
  • the RV is indicated in the corresponding block coding control information, which implicitly indicates the block coding parameter set corresponding to the first data unit transmission/retransmission.
  • block coding may not be used for the first transmission, that is, the block coding matrix is the identity matrix.
  • the first data unit of RV0 does not use block coding, but only other RVs use block coding.
  • different RVs can correspond to the same block coding parameter set.
  • different transmission orders of a first data unit have respective corresponding block coding parameter sets.
  • the first transmission corresponds to the block coding parameter set A, the second time the block coding parameter set B, and the third time it is still the block coding parameter set A.
  • the correspondence relationship between the transmission order and the block coding parameter set may be predefined by the protocol, or the correspondence relationship may be configured by the base station or the network, or the correspondence relationship may be preconfigured.
  • the transmission order is indicated in the corresponding control information, which implicitly indicates the block coding parameter set corresponding to the data unit transmission (retransmitted).
  • the transmission order is the transmission times of the current transmission, that is, according to the transmission times of the current transmission corresponding to the transmission/retransmission of the first data unit, the corresponding block coding parameter set can be determined.
  • a block coding parameter set or mode corresponds to a block coding sequence number.
  • the correspondence between the block coding and the block coding parameter set or mode may be predefined by the protocol, or the correspondence may be configured by the base station or the network, or the correspondence may be preconfigured.
  • indicating the block coding parameter set or block coding sequence number in the corresponding block coding control information is equivalent to indicating the corresponding transmission/retransmission of the first data unit.
  • control information further includes: block coding enable indication information, where the block coding enable indication information is used to indicate whether to enable block coding, and if it is enabled, the current transmission/repetition of the first data unit During transmission, the corresponding block coding parameter set can be used for this transmission and coding; conversely, in the current transmission/retransmission of the first data unit, the corresponding block coding parameter set cannot be used for this transmission and coding.
  • the sender in the retransmission based on TB feedback, the sender still retransmits one or more TBs in some cases, and the sender may include one or more TBs in one transmission.
  • Each TB can also contain one or more CBGs.
  • a vehicle multicasts a first data unit (TB or CBG) to other nearby vehicles as an example.
  • TB first data unit
  • vehicle B there are vehicle C in the group.
  • the TB contains N CBs after segmentation, and a first data unit participating in block coding only contains one CB, where all CBs have the same length, and the receiving end feeds back the reception of the TB according to the receiving situation.
  • the first transmission does not use block coding, that is, N CBs are cascaded and then sent, that is, the block coding matrix X used for the first time is a unit square matrix of order N;
  • the SCI corresponding to the TB indicates that the TB is the first transmission, and the corresponding block coding parameter set X is transmitted for the first time.
  • vehicle A can perform a second retransmission on a SideLink resource, and indicate in the SCI corresponding to the TB that the TB is the second The second transmission, the second transmission corresponds to the block coding parameter set Y.
  • vehicle A as the sender receives a NACK, it continues to retransmit on a SideLink resource until no NACK is received or ACKs from all group members (vehicle B and vehicle C) are received, or the maximum number of retransmissions is reached.
  • the number of transmissions of the TB is indicated in the SCI corresponding to the TB of the i-th transmission, that is, the number of transmissions currently transmitted corresponds to a block coding parameter set.
  • the receiving vehicle B at the receiving end after C receives the multicast of vehicle A, it is based on the correspondence between the block transmission sequence number carried in the SCI and the block coding parameter set, or according to the transmission order carried in the SCI and the block coding parameter set.
  • the corresponding relationship determines the block coding parameter set corresponding to the current transmission.
  • the sender/receiver when the sender/receiver determines the block coding parameter set used for the current transmission according to the corresponding relationship between the transmission order and the block coding parameter set, it further includes determining the block coding contained in the current TB or the first data unit
  • the number of input blocks that is, the dimension of a block coding matrix is related to the number of block coding input blocks.
  • the corresponding relationship between the transmission order and the block coding parameter set may be pre-defined by the protocol, may also be configured by the network (for example, a base station, other high-level entities), or may be determined by pre-configuration of the network.
  • the block coding enable indication information of whether to enable block coding may be set in the SCI. When the block coding enable indication information is enabled, the block coding parameter set corresponding to RV can be used; when the block coding enable indication information is disabled, the block coding parameter set corresponding to RV Can not be used.
  • a block coding input block participating in block coding includes multiple CBs.
  • N CBs can be divided into M block coding input blocks/CBGs, and block coding is performed among the M CBGs to obtain corresponding blocks. Encode the output block.
  • a block coding input block participating in block coding includes one CB.
  • N CBs are divided into M CBGs.
  • a block coding operation can be performed on each of the M CBGs.
  • the number of block encoding output blocks obtained after block encoding may not be equal to the number N of block encoding input blocks, for example, the block encoding matrix may not be a square matrix.
  • the data transmission method in the embodiment is applicable to ACK/NACK-based multicast, broadcast, and unicast transmission performed by the device.
  • the sender performs broadcast transmission, and if the receiver receives correctly, no feedback or ACK is fed back, and NACK is fed back if the receiving error is received; or the sender performs group transmission, and if the receiver receives correctly, no feedback is performed Or feedback ACK and receive error feedback NACK; the sender performs unicast transmission, and if the receiver receives the correct feedback ACK, it receives the error feedback NACK.
  • receiving correct/error of a first data unit refers to block-decoding the received block-coded output block obtained after block-coding, and obtains the information of the block-coded input block sent by the transmitting end, and according to The correctness/error of the restored block coding input block is judged whether the entire first data unit is correct or incorrect.
  • the sender in the retransmission based on CBG feedback, can still retransmit the entire CBG in some cases, and multiple CBs in the CBG can use block coding to improve retransmission reliability.
  • a transmission performed by the sending end or the receiving end may include one or more TBs, and each TB may also include one or more CBGs.
  • the following block coding process can be performed separately for each CBG that needs to be retransmitted.
  • the N CBs included in a multicast TB can be divided into M CBGs, then M 1 CBG includes CB, the remaining CBG contains CB.
  • mod is the remainder operation.
  • the receiving end sends CBG feedback to the sending end to determine the index of the CBG that was not received correctly. For example, if there are K CBGs that are not received correctly, in the next transmission, only the K CBGs that are not received correctly can be transmitted, and block coding is performed in each CBG, that is, multiple CBs in the CBG are block coding. Among them, CBs between different CBGs will not perform block coding.
  • the number of output blocks for block encoding after block encoding may not be equal to the number N of input blocks for block encoding.
  • the block coding matrix may not be a square matrix.
  • Fig. 6 is a structural block diagram of a data transmission device provided by an embodiment of the present application. As shown in FIG. 6, the data transmission device provided in this embodiment includes an encoding module 320 and a first sending module 340.
  • the encoding module 320 is configured to block-encode at least one block-encoded input block in the first data unit by using the block encoding parameter set corresponding to the current transmission to generate a corresponding block-encoded output block; the first sending module 340 is set to include The second data unit of at least one block encoding output block is sent to the receiving end.
  • the data transmission device provided in this embodiment is configured to implement the data transmission method of the embodiment shown in FIG. 2.
  • the implementation principles and technical effects of the data transmission device provided in this embodiment are similar, and will not be repeated here.
  • the first data unit is a TB or a CBG; each TB includes at least one CBG, and each CBG includes at least one code block CB.
  • each block encoding parameter set includes: multiple block encoding vectors or multiple sets of block encoding parameters, and each block encoding vector or each set of block encoding parameters is used to encode multiple block encoding input blocks into one block Encoding output block; or, the block encoding parameter set corresponding to the current transmission corresponds to a block encoding matrix, one row or one column of the block encoding matrix is used to encode multiple block encoding input blocks into one block encoding output block.
  • the data transmission device further includes:
  • the first determining module is set to determine the number of block encoding input blocks contained in the first data unit; the second determining module is set to determine the number of columns or rows of the block encoding matrix and the number of block encoding vectors according to the number of block encoding input blocks.
  • the block coding input block is: at least one original information block obtained after segmenting the first data unit, or at least one obtained by adding cyclic redundancy check CRC bits to one or more original information blocks A check information block, or at least one channel coding information block obtained after channel coding one or more check information blocks, or at least one matching information block obtained after performing rate matching on one or more channel coding information blocks.
  • the second data unit includes:
  • Add CRC bits to each block coded output block to obtain a check information block, perform channel coding on the check information block to obtain a channel code information block, perform rate matching on the channel code information block to obtain a matching information block, and cascade the matching information blocks Obtain the concatenated information block; or, perform channel coding on the check information block to obtain a channel coded information block, perform rate matching on the channel coded information block to obtain a matching information block, and concatenate the matching information blocks to obtain a concatenated information block; or, Performing rate matching on the channel coding information block to obtain a matching information block, and concatenating the matching information blocks to obtain a concatenated information block; or, concatenating the matching information blocks to obtain a concatenated information block.
  • the data transmission device further includes:
  • the first configuration module is configured to configure or pre-configure the correspondence between the maximum number of block coding input blocks in each first data unit and the length of each first data unit.
  • the second configuration module is set to configure or pre-configure the number of block coding input blocks in each first data unit.
  • the data transmission device further includes:
  • the first receiving module is configured to receive control information corresponding to the current transmission from the scheduling node or the receiving end, and/or the second transmitting module is configured to transmit control information corresponding to the current transmission.
  • control information includes: block coding control information corresponding to the current transmission, and the block coding control information is used to determine the information of the block coding parameter set corresponding to the second data unit in the current transmission.
  • control information further includes: block coding enable indication information, and the block coding enable indication information is used to indicate whether block coding is enabled in the current transmission.
  • control information further includes at least one of the following: a sender identifier, a target receiver identifier or a target receiver group identifier, a hybrid automatic repeat request HARQ process number, and a new data indication NDI.
  • the data transmission device further includes:
  • the third configuration module is set to configure or pre-configure the mapping relationship between the block coding parameter set and the transmission order.
  • the block coding control information includes: a transmission sequence corresponding to the current transmission.
  • the transmission sequence includes: a redundancy version or the number of transmissions currently transmitted.
  • the data transmission device further includes:
  • the fourth configuration module is set to configure or pre-configure the mapping relationship between the block coding sequence number and the block coding parameter set, and the block coding sequence number corresponds to the block coding parameter set one to one.
  • the block coding control information includes: a block coding sequence number.
  • the DCI or high-level instruction corresponding to the current transmission carries block coding control information.
  • the block coding control information carried in the DCI or high-level instruction corresponding to the current transmission is received.
  • block coding control information is carried in the direct link control information SCI.
  • it further includes receiving the block coding control information carried in the DCI or high-level instruction corresponding to the current transmission.
  • Fig. 7 is a structural block diagram of another data transmission device provided by an embodiment of the present application.
  • the data transmission device provided in this embodiment includes a first receiving module 420, a determining module 440, and a decoding module 460.
  • the first receiving module 420 is configured to receive a second data unit containing at least one block encoding output block; the determining module 440 is configured to determine the block encoding parameter set corresponding to the second data unit; the decoding module 460 is configured to encode the block The output block is subjected to block decoding, and the block coded input block is recovered.
  • the data transmission device provided in this embodiment is configured to implement the data transmission method of the embodiment shown in FIG. 5, and the implementation principles and technical effects of the data transmission device provided in this embodiment are similar, and will not be repeated here.
  • the data transmission device further includes:
  • the second receiving module is set to receive control information corresponding to the current transmission, or the first sending module is set to send control information corresponding to the current transmission.
  • control information includes: block coding control information corresponding to the current transmission, and the block coding control information is used to determine the information of the block coding parameter set corresponding to each second data unit in the current transmission.
  • the data transmission device further includes:
  • the first configuration module is set to configure or pre-configure the mapping relationship between the block coding parameter set and the transmission order.
  • the block coding control information includes: a transmission sequence corresponding to the current transmission.
  • the transmission sequence includes: a redundancy version or the number of transmissions currently transmitted.
  • the data transmission device further includes:
  • the second configuration module is configured to configure or pre-configure the mapping relationship between the block coding sequence number and the block coding parameter set, and the block coding sequence number corresponds to the block coding parameter set one to one.
  • the block coding control information includes: a block coding sequence number.
  • the DCI or high-level command corresponding to the current transmission carries block coding control information.
  • the block coding control information is carried in the DCI or high-level command corresponding to the current transmission sent.
  • the block coding control information carried in the direct link control information SCI is received.
  • the method further includes receiving the block coding control information carried in the DCI or high-level instruction corresponding to the current transmission.
  • the decoding module includes: performing block decoding with at least one second data unit received this time based on at least one second data unit received this time, and recovering the corresponding block coded input block;
  • the second data unit received this time includes at least one successfully decoded block encoding input block, and/or at least one successfully decoded block encoding output block.
  • FIG. 8 is a schematic structural diagram of a device provided by an embodiment of the present application.
  • the device provided by the present application includes a processor 510 and a memory 520.
  • the number of processors 510 in the device may be one or more, and one processor 510 is taken as an example in FIG. 8.
  • the number of memories 520 in the device may be one or more, and one memory 520 is taken as an example in FIG. 8.
  • the processor 510 and the memory 520 of the device may be connected through a bus or in other ways. In FIG. 8, the connection through a bus is taken as an example.
  • the device is the sender.
  • the sending end may be one of a scheduling node, a base station, or a UE.
  • the memory 520 can be configured to store software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the device of any embodiment of the present application (for example, the encoding module and the module in the data transmission device).
  • the memory 520 may include a storage program area and a storage data area.
  • the storage program area may store an operating system and an application program required for at least one function; the storage data area may store data created according to the use of the device, and the like.
  • the memory 520 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices.
  • the memory 520 may further include a memory remotely provided with respect to the processor 510, and these remote memories may be connected to the device through a network.
  • networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.
  • the above-provided device can be configured to execute the data transmission method applied to the sending end provided in any of the above-mentioned embodiments, and has corresponding functions and effects.
  • the program stored in the corresponding memory 520 may be the program instruction/module corresponding to the data transmission method applied to the receiving end provided in the embodiment of the application, and the processor 510 runs the software program stored in the memory 520,
  • the instructions and modules execute one or more functional applications and data processing of the computer equipment, that is, implement the data transmission method applied to the receiving end in the foregoing method embodiment. It can be understood that, when the above-mentioned device is the receiving end, it can execute the data transmission method applied to the receiving end provided in any embodiment of the present application, and has corresponding functions and effects.
  • the receiving end may be one of the base station or the UE.
  • An embodiment of the present application also provides a storage medium containing computer-executable instructions.
  • the computer-executable instructions are executed by a computer processor, they are used to execute a data transmission method.
  • the block coding parameter set corresponding to the current transmission performs block coding on at least one block coding input block in the first data unit to generate a corresponding block coding output block; sending the second data unit containing at least one block coding output block to the receiving end .
  • the embodiment of the present application also provides a storage medium containing computer-executable instructions.
  • the computer-executable instructions are executed by a computer processor, they are used to execute a data transmission method.
  • the method is applied to the receiving end, and the method includes: receiving A second data unit containing at least one block encoding output block; determining a block encoding parameter set corresponding to the second data unit; performing block decoding on the block encoding output block to recover the block encoding input block.
  • user equipment encompasses any suitable type of wireless user equipment, such as mobile phones, portable data processing devices, portable web browsers, or vehicular mobile stations.
  • the embodiments of the present application may be implemented by executing computer program instructions by a data processor of a mobile device, for example, in a processor entity, or by hardware, or by a combination of software and hardware.
  • Computer program instructions can be assembly instructions, instruction set architecture (Instruction Set Architecture, ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or written in any combination of one or more programming languages Source code or object code.
  • the block diagram of any logical flow in the drawings of the present application may represent program steps, or may represent interconnected logic circuits, modules, and functions, or may represent a combination of program steps and logic circuits, modules, and functions.
  • the computer program can be stored on the memory.
  • the memory can be of any type suitable for the local technical environment and can be implemented by any suitable data storage technology, such as but not limited to read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), optical Memory devices and systems (Digital Video Disc (DVD) or Compact Disk (CD)), etc.
  • Computer-readable media may include non-transitory storage media.
  • the data processor can be any type suitable for the local technical environment, such as but not limited to general-purpose computers, special-purpose computers, microprocessors, digital signal processors (Digital Signal Processing, DSP), application specific integrated circuits (ASICs) ), programmable logic devices (Field-Programmable Gate Array, FPGA) and processors based on multi-core processor architecture.
  • DSP Digital Signal Processing
  • ASICs application specific integrated circuits
  • FPGA Field-Programmable Gate Array
  • FPGA Field-Programmable Gate Array

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Abstract

本申请提出一种数据传输方法、装置和存储介质。该方法包括：通过当前传输对应的块编码参数集对第一数据单元中的至少一个块编码输入块进行块编码，生成与所述至少一个块编码输入块对应的块编码输出块；将包含至少一个块编码输出块的第二数据单元发送至接收端。

Description

数据传输方法、装置和存储介质
本申请要求在2019年07月24日提交中国专利局、申请号为201910670690.4的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及无线通信网络，例如涉及一种数据传输方法、装置和存储介质。
背景技术
在广播通信中，广播接收端不反馈数据包的确认信息(比如，正确应答(Acknowledgement，ACK)/不正确应答(Non-Acknowledgement，NACK))。对于组播通信和单播通信，在一些情况下也会去使能(Disable)反馈功能，即和广播一样，接收端不向发送端反馈数据包的确认信息。为了保证尽可能成功传输这些没有确认信息的数据包，可采用盲重传技术对数据包进行重传，即使用多份资源连续多次传输同一个数据包/传输块(Transport Block，TB)。
在网络系统里，盲重传或者基于TB的重传对于一个接收用户终端(User Equipment，UE)来说，一些重传的编码块(Code Block，CB)是没有用处的。以设备A广播数据给临近的UE1，UE2，UE3为例，两次盲重传一个TB1，假设TB1包含4个CB。假设UE1在接收到第一次传输时，CB1～CB3接收正确，只有CB4接收错误，则在接收第二次的盲重传数据包时，重传的CB1～CB3对于UE1是没有用处的。又如，假设UE2在第一次接收时，只有CB1没有正确，则第二次传输时CB2～CB4对于UE2来说是没有用的，若第二次重传CB1仍然没有接收正确，则需要继续重传整个TB1。从广播的多个接收UE的角度来说，可能每一个CB都需要重传，以满足不同接收UE的需求，但是从一个接收UE的角度来说，重传的数据包有很多CB是没有用处的。因此，如何提高数据包重传的可靠性，是一个亟待解决的问题。
发明内容
本申请提供用于一种数据传输方法、装置和存储介质，增强了第一数据单元重传的可靠性。
本申请实施例提供一种数据传输方法，包括：
通过当前传输对应的块编码参数集对第一数据单元中的至少一个块编码输入块进行块编码，生成对应的块编码输出块；
将包含至少一个所述块编码输出块的第二数据单元发送至接收端。
本申请实施例提供一种数据传输方法，包括：
接收包含至少一个块编码输出块的第二数据单元；
确定所述第二数据单元对应的块编码参数集；
对所述块编码输出块进行块译码，恢复得到块编码输入块。
本申请实施例提供一种数据传输装置，包括：
编码模块，设置为通过当前传输对应的块编码参数集对第一数据单元中的至少一个块编码输入块进行块编码，生成对应的块编码输出块；
第一发送模块，设置为将包含至少一个所述块编码输出块的第二数据单元发送至接收端。
本申请实施例提供一种数据传输装置，包括：
第一接收模块，设置为接收包含至少一个块编码输出块的第二数据单元；
确定模块，设置为确定所述第二数据单元对应的块编码参数集；
译码模块，设置为对所述块编码输出块进行块译码，恢复得到块编码输入块。
本申请实施例提供一种存储介质，所述存储介质存储有计算机程序，所述计算机程序被处理器执行时实现本申请实施例中的任一数据传输方法。
附图说明
图1是本申请实施例提供的一种划分TB的显示示意图；
图2是本申请实施例提供的一种数据传输方法的流程图；
图3是本申请实施例提供的一种SCI和SCI数据信息之间的关系示意图；
图4是本申请实施例提供的另一种SCI和SCI数据信息之间的关系示意图；
图5是本申请实施例提供的另一种数据传输方法的流程图；
图6是本申请实施例提供的一种数据传输装置的结构框图；
图7是本申请实施例提供的另一种数据传输装置的结构框图；
图8是本申请实施例提供的一种设备的结构示意图。
具体实施方式
下文中将结合附图对本申请的实施例进行说明。
在一实施例中，上行通信(UpLink)指的是UE向基站的传输，而下行通信(DownLink)指的是基站向UE的传输，而SideLink是指UE之间的直接传输。在UE之间使用SideLink资源进行信息的传输的情况下，可以根据应用场景及业务类型进行信息传输，比如，SideLink通信方式包括设备到设备(Device to Device，D2D)通信，车辆-X(Vehicle to Anything/Everything，V2X)通信等。在SideLink通信中，UE之间可以是没有确认信息的广播业务，也可以有组播或者单播业务传输，且单播、组播业务可以去使能反馈，在这些没有确认信息的情况下，通常会对一个TB进行盲重传，比如，LTE V2X会对一个TB进行两次传输，NR V2X则可能进行超过两次的盲重传。另外基站也可以进行盲重传，进行广播，单播和组播业务的传输。
一个实施例中，基于TB或者编码块组(Code Block Group，CBG)的ACK/NACK(A/N)反馈下，虽然这种反馈方式可以减少反馈开销，但当传输出错时，发送端仍然需要重传整个TB或者整个CBG。SideLink的单播或者组播中使用的是基于TB的A/N反馈。比如，对于组播的反馈信息可以有两种方式：第一种组播反馈方式只反馈NACK，即当一个接收UE接收到一个组播数据时，若数据接收错误则反馈NACK，若接收正确则不反馈；第二种组播反馈方式只反馈ACK/NACK，即当一个接收UE接收到一个组播数据时，若数据接收错误则反馈NACK，若接收正确则反馈ACK。单播的反馈类似组播的第二种方式，即接收正确反馈ACK，接收错误反馈NACK。基于TB的重传被应用于盲重传模式和基于TB的A/N反馈重传模式下，且这两种模式是适合广播和组播的重传模式。
图1是本申请实施例提供的一种划分TB的显示示意图。如图1所示，一个TB可包含一个CRC信息，一个TB大小超过规定的门限时，发送端通常要将TB分割成多个等长度的信息块(Information Block)，每个信息块分别进行编码、速率匹配并添加CRC后形成一个CB，并将多个CB进行码块级联等操作后再发送给接收端。其中，TB包括循环冗余校验(Cyclic Redundancy Check，CRC)比特。
在长期演进(Long Term Evolution，LTE)/新空口(New Radio，NR)里，TB和CB的CRC的长度通常是24比特(bit)。CB CRC可以对编码块的正确性进行校验，若CB CRC校验通过，则说明该CB是正确，否则，则说明该CB是错误的CB。相应的，TB CRC可用于对接收的TB进行正确性校验，当TB CRC在接收端校验不通过时，说明TB接收错误。其中，单播的ACK/NACK可以是基于TB反馈的，即接收端会对一个TB的接收情况给出反馈，而重传也是重传一个TB。另外，为了平衡反馈开销和提高重传效率，单播也可以是基于CBG的A/N反馈，一个TB可以包括多个CBG，一个CBG包括一个或多个CB，接 收端会对每个CBG给出反馈信息，若一个CBG对应的反馈为NACK，则代表该CBG中的所有CB都需要重传，即发送端重传时可重传出错的CBG而非整个TB。基于CBG的反馈可以一定程度上减少不必要的重传，但是一个CBG内部也可以包括多个CB，而多个CB既有正确的，也有错误的，即基于CBG的反馈只是一定程度上减少了不必要的重传，而并非完全避免了不必要的重传。
对于组播或者广播，多个接收端的接收情况是相互独立的，即错误的CB或CBG并不相同且每个接收端都反馈基于CBG的A/N会带来很大的反馈开销，可以认为基于CBG的反馈是不适合组播/广播的。另外，基于CBG的反馈带来的重传效率提高，并不适用于盲重传。在盲重传情况下，接收端不会反馈任何信息给发送端。即盲重传或者基于TB的重传对于一个接收UE来说，一些重传的CB是没有用处的。
鉴于此，本申请实施例提供了一种数据传输方法，用于增强盲重传以及基于TB或CBG的A/N传输情况下的重传可靠性。
在一实施例中，图2是本申请实施例提供的一种数据传输方法的流程图。本实施例适用于增强重传可靠性的编码的情况。本实施例可以通过发送端来执行。其中，发送端可以为调度节点(例如，基站，接入点等)或用户终端(User Equipment，UE)。如图2所示，本实施例提供的方法包括S120-S140。
S120、通过当前传输对应的块编码参数集对第一数据单元中的至少一个块编码输入块进行块编码，生成对应的块编码输出块。
S140、将包含至少一个块编码输出块的第二数据单元发送至接收端。
在一实施例中，为了保证数据传输的可靠性，重传是一种有效的方法，盲重传相对于基于反馈的重传不需要等到接收端的反馈，适用于广播业务，以及时延和可靠性要求比较高的业务。另外，基于TB或CBG反馈的重传，也需要重传整个TB或CBG，被广泛应用于通信系统中。本申请实施例中的方法，对于广播、单播或组播的重传/盲重传进行增强，适用于上下行传输和直通链路(SideLink)传输的场景，利用块编码对一个TB或CBG内的多个块编码输入块进行编码以提高重传的可靠性。
在一实施例中，在发送端当前传输中包含至少一个第一数据单元，其中，第一数据单元为传输块TB或编码块组CBG；每个TB包含至少一个CBG，每个CBG包含至少一个CB。
在一实施例中，每个第一数据单元包含多个块编码输入块，使用当前传输对应的块编码参数集对第一数据单元中的多个块编码输入块进行块编码，以生成对应的多个块编码输出块，将包含多个块编码输出块的第二数据单元发送至 接收端。比如，发送端在第i次传输第一数据单元，并且每个第一数据单元中包含N个块编码输出块，使用第i次传输对应的块编码参数集将N个块编码输入块编码为M(i)个块编码输出块，并在第i次传输中发送包含M(i)个块编码输出块的第二数据单元至接收端。
在一实施例中，在发送端发送第二数据单元至接收端的情况下，为了保证发送端能准确地将第二数据单元发送至对应的接收端。在发送端将包含至少一个块编码输出块的第二数据单元发送至接收端的同时，或者在发送端将包含至少一个块编码输出块的第二数据单元发送至接收端之前，数据传输方法，还包括：从调度节点或接收端接收当前传输对应的控制信息，和/或，发送当前传输对应的控制信息。其中，调度节点可以为用于配置控制信息的基站。比如，发送端从调度节点接收第i次传输对应的控制信息，并将第i次传输对应的控制信息发送至接收端。
在一实施例中，控制信息包括：当前传输对应的块编码控制信息，块编码控制信息用于确定当前传输中的第二数据单元对应的块编码参数集的信息。
在一实施例中，每个块编码参数集包括：多个块编码向量或多组块编码参数，每个块编码向量或每组块编码参数用于将多个块编码输入块编码为一个块编码输出块；或者，当前传输对应的块编码参数集对应一个块编码矩阵，块编码矩阵的一行或一列用于将多个块编码输入块编码为一个块编码输出块。
在一实施例中，在当前传输的一个第一数据单元对应的块编码参数集可以包括：多个块编码向量或多组块编码参数。一个块编码向量或块编码参数用于将多个块编码输入块编码为一个块编码输出块。
在一实施例中，在当前传输对应的块编码参数集对应一个块编码矩阵，块编码矩阵的一行或一列用于将多个块编码输入块编码为一个块编码输出块。一个实施例中，若块编码输入块对应块编码矩阵的列数，则块编码输出块对应块编码矩阵的行数。一个实施例中，若块编码输入块对应块编码矩阵的行数，则块编码输出块对应块编码矩阵的列数。比如，在第i次传输一个第一数据单元对应的块编码参数集包括M(i)个块编码向量或M(i)组块编码参数，一个块编码向量或一组块编码参数用于将N个块编码输入块编码为一个块编码输出块。或者在第i次传输对应的块编码参数集对应一个块编码矩阵。
在一实施例中，数据传输方法，还包括：配置或预配置块编码参数集与传输次序之间的映射关系。在一实施例中，为了根据传输次序能够准确地得到对应的块编码参数集，在块编码参数集与传输次序之间建立映射关系。在一实施例中，在UE在基站的覆盖范围内的情况下，基站可配置块编码参数集与传输次序之间的映射关系；在一个实施例中，在UE不在基站的覆盖范围内的情况下， 基站可预配置块编码参数集与传输次序之间的映射关系。在一实施例中，可通过协议预定义块编码参数集与传输次序之间的映射关系。
在一实施例中，块编码控制信息包括当前传输对应的传输次序。在一实施例中，传输次序包括冗余版本(Redundancy Version，RV)或当前传输的传输次数。发送端在当前传输向接收端发送第二数据单元的情况下，传输次序与块编码参数集之间的映射关系，指示了当前传输的传输次数或冗余版本，隐含指示了当前传输对应的块编码控制信息。
在一实施例中，数据传输方法，还包括：配置或预配置块编码序号与所述块编码参数集之间的映射关系，所述块编码序号与所述块编码参数集一一对应。其中，块编码控制信息包括：块编码序号。在一实施例中，为了根据块编码序号能够准确地得到对应的块编码参数集，在块编码参数集与块编码序号之间建立映射关系。在一实施例中，也可对编码序号与块编码参数集之间的映射关系进行配置、预配置或预定义。对配置、预配置或预定义的说明，见上述实施例的描述，在此不再赘述。在实施例中，块编码序号与块编码参数集之间的映射关系，块编码序号指示了当前传输对应的块编码控制信息。
在一实施例中，控制信息还包括：块编码使能指示信息，块编码使能指示信息用于指示在当前传输中是否使能块编码的信息。在一实施例中，可预定义、配置或预配置是否使能块编码。在一实施例中，在当前传输对应的控制信息中包括用于指示当前传输是否使能块编码的信息。比如，在第i次传输一个第二数据单元对应的控制信息中包括用于指示第i次传输是否使能块编码的指示。
在一实施例中，控制信息还包括下述至少之一：发送端标识、目的接收端标识或者目的接收端组标识、混合自动重传请求(Hybrid Automatic Repeat reQuest，HARQ)进程号、新数据指示(New Data Indication，NDI)。在一实施例中，在控制信息中还包括当前传输中包含的第二数据单元的指示信息，用于指示在当前传输中所包含的第二数据单元的信息。
在一实施例中，数据传输方法，还包括：配置或预配置每个第一数据单元中块编码输入块的最大数目与每个第一数据单元长度之间的对应关系；或者，配置或预配置每个第一数据单元中块编码输入块的数量。
在一实施例中，可预定义、配置或预配置每个第一数据单元中的块编码输入块的最大数目，以避免第一数据单元中的数据出现溢出现象。在一实施例中，也可通过对每个第一数据单元中块编码输入块的最大数目与每个第一数据单元长度之间的对应关系进行预定义、配置或预配置，来避免第一数据单元中的数据溢出的情况。
在一实施例中，数据传输方法，还包括：确定第一数据单元中包含块编码输入块的数量；根据块编码输入块的数量确定块编码矩阵的列数或行数、块编码向量的维度或块编码参数的元素数中的一个。
在一实施例中，块编码矩阵的一行或一列可将多个块编码输入块编码为一个块编码输出块，可在确定第一数据单元中包含块编码输入块的数量之后，按照块编码输入块的数量确定块编码矩阵的列数或行数。
在一实施例中，每个块编码向量或每组块编码参数可将多个块编码输入块编码为一个块编码输出块，可在确定第一数据单元中包含块编码输入块的数量之后，按照块编码输入块的数量确定块编码向量的维度或块编码参数的元素数。
在一实施例中，块编码输入块为：至少一个对第一数据单元进行分割之后得到的原始信息块，或者，至少一个对一个或多个原始信息块添加CRC比特得到的检验信息块，或者，至少一个对一个或多个检验信息块进行信道编码之后得到的信道编码信息块，或者，至少一个对一个或多个信道编码信息块进行速率匹配之后得到的匹配信息块。
在一实施例中，第二数据单元，包括：对每个块编码输出块添加CRC比特得到校验信息块，对校验信息块进行信道编码得到信道编码信息块，对信道编码信息块进行速率匹配得到匹配信息块，对匹配信息块进行级联得到级联信息块；或者，对校验信息块进行信道编码得到信道编码信息块，对信道编码信息块进行速率匹配得到匹配信息块，对匹配信息块进行级联得到级联信息块；或者，对信道编码信息块进行速率匹配得到匹配信息块，对匹配信息块进行级联得到级联信息块；或者，对匹配信息块进行级联得到级联信息块。
在一实施例中，在块编码输入块为：至少一个对第一数据单元进行分割之后得到的原始信息块的情况下，第二数据单元包括：对每个块编码输出块添加CRC比特得到校验信息块，对校验信息块进行信道编码得到信道编码信息块，对信道编码信息块进行速率匹配得到匹配信息块，对匹配信息块进行级联得到级联信息块。
在一实施例中，在块编码输入块为至少一个对一个或多个原始信息块添加循环冗余校验CRC比特得到的检验信息块的情况下，第二数据单元包括：对校验信息块进行信道编码得到信道编码信息块，对信道编码信息块进行速率匹配得到匹配信息块，对匹配信息块进行级联得到级联信息块。
在一实施例中，在块编码输入块为至少一个对一个或多个检验信息块进行信道编码之后得到的信道编码信息块的情况下，第二数据单元包括：对信道编码信息块进行速率匹配得到匹配信息块，对匹配信息块进行级联得到级联信息 块。
在一实施例中，在块编码输入块为至少一个对一个或多个信道编码信息块进行速率匹配之后得到的匹配信息块的情况下，第二数据单元包括：对匹配信息块进行级联得到级联信息块。
在一实施例中，发送端向接收端发送第一数据单元的步骤依次包括：判定第一数据单元是否需要分割；在第一数据单元的大小超过分割门限T的情况下，对第一数据单元进行预定义、配置或预配置的分割，得到多个原始信息块；然后为每个原始信息块添加CRC比特，得到校验信息块；分别对每个校验信息块进行信道编码，得到信道编码信息块；对每个信道编码信息块进行速率匹配，得到匹配信息块；对么给匹配信息块进行级联，得到级联信息块；将级联信息块发送至接收端。
在一实施例中，可将块编码的步骤嵌入到上述发送端向接收端发送第一数据单元的步骤中的其中一个步骤之后。
在一实施例中，块编码的步骤位于对第一数据单元进行分割之后，即对多个原始信息块进行块编码。对于发送端，一个TB的长度B(TB可以包含或不包含长度的CRC比特)超过了编码的门限长度T，则需要对TB进行分块，设每个分块的CRC的长度L，将整个TB均分为k个原始信息块，即待进行块编码的块编码输入块IB，表示为IB 1,IB 2,.....IB k，其中，k等于
Figure PCTCN2020085698-appb-000001
Figure PCTCN2020085698-appb-000002
为上取整。在一个实施例中，也可对分块数k进行预定义、配置或者预配置，将整个TB划分为k个原始信息块。
在得到原始信息块之后，将k个原始信息块(即块编码输入块)IB 1,IB 2,.....IB k进行块编码，生成k个块编码输出块OB 1,OB 2,.....OB k，其中，块编输出块与原始信息块的长度可以相等。其中，每个块编码输出块由k个原始信息块进行块编码后得到，可以表示为OB i＝f i(IB 1,IB 2,.....IB k)，f i()为一个块编码方程。在一实施例中，每个块编码输出块也可以由m个原始信息块进行块编码后获得，其中，m≤k，可以等效理解为一些IB在块编码方程中的系数为0。比如，一种线性编码矩阵如下所示，其中，矩阵的元素可以为0。
Figure PCTCN2020085698-appb-000003
在得到每个原始信息块对应的块编码输出块之后，对每个块编码输出块OB添加长度为L的CRC校验位，并分别进行信道编码、速率匹配等操作，并将速率匹配之后得到k个匹配信息块进行级联，然后将级联之后的信息块发送至接 收端。其中，信道编码可以包括低密度奇偶检验码(Low Density Parity Check Code，LDPC)，卷积码(Turbo码)，极化码(Polar码)等。
在一实施例中，可将块编码的步骤放在添加CRC比特之后，即对检验信息块进行块编码。
在一实施例中，可将块编码的步骤放在信道编码之后，即对信道编码信息块进行块编码。在实施例中，将整个TB均分为k个原始信息块，然后对每个原始信息块进行校验并添加CRC比特，以及进行信道编码，生成相应的信道编码信息块，将信道编码信息块作为块编码输入块IB 1,IB 2,.....IB k。将k个信道编码信息块IB 1,IB 2,.....IB k进行块编码，生成k个块编码输出块OB 1,OB 2,.....OB k。每个块编码输出块由m(m≤k)个信道编码信息块进行块编码后得到。比如，采用如下所示的块编码矩阵进行块编码，矩阵中一些元素可以为0。
Figure PCTCN2020085698-appb-000004
在一实施例中，块编码可以使用异或运算，比如，本实施例中块编码矩阵的其中一个块编码输出块可以表示为：
Figure PCTCN2020085698-appb-000005
假设矩阵元素取值只能是0或1，则0代表不参与块编码，1表示参与块编码。在一实施例中，块编码可以采用异或运算，也可以采用其它运算方式，对此并不进行限定。在一实施例中，对块编码矩阵中元素的取值也不进行限定，可采用喷泉码，差错码等编码算法进行运算。然后对每个块编码之后的信息块进行速率匹配，然后将速率匹配之后的信息块进行级联，并将级联之后的信息块发送至接收端。
在一实施例中，块编码的步骤放在速率匹配之后，即对多个匹配信息块进行块编码，然后对块编码之后的信息块进行级联。
在一实施例中，块编码为将N个长度相等的原始信息块使用一组块编码参数或一个块编码向量进行运算获得一个块编码输出块，即使用不同的一组块编码参数或一个块编码向量，可以获得不同的块编码输出块。以块编码矩阵为例，一组块编码参数相当于上述实施例中块编码矩阵的一行块编码向量，也相当于一个块编码方程，这一组块编码参数既包括相关的各个系数也包括相关运算。使用M组块编码参数可以将N个原始信息块(即块编码输入块)编码为M个块编码输出块，也相当于上述实施例中使用一个M行N列的矩阵将N个原始信息块编码为M个块编码输出块。其中，上述实施例中以M＝N为例进行说明，但并不限制M和N一定相等。
一个块编码输入块中可以是一个对第一数据单元进行分割之后得到的原始 信息块，也可以为添加CRC比特的校验信息块，也可以为信道编码后的信道编码信息块，也可以为速率匹配后的匹配信息块。一个实施例中，一个块编码输入块可以包含多个第一数据单元分割后的原始信息块，也可以包含多个添加分段CRC比特后的校验信息块，也可以包含多个信道编码后的信道编码信息块，也可以包含多个速率匹配后的匹配信息块，即一个块编码输入块可以是一个分段组。比如，一个TB可以包含16个CB，每两个CB为一个CBG，则一个块编码输入块可以是一个CBG，则进行块编码的为一个TB中多个CBG之间的块编码。在一实施例中，一个块编码输入块可以是一个CB，或者多个CB(即一个CBG)。为了便于描述，本申请实施例中将上述一个或多个第一数据单元分割后的原始信息块，添加分段CRC后的检验信息块，信道编码后的信道编码信息块，或速率匹配后的匹配信息块组成的待块编码信息块统称为一个块编码输入块。
在一实施例中，假设设备A第一次传输了一个TB给设备C和设备D，该TB包含4个IB(分别为：IB1、IB2、IB3和IB4)，如果设备C接收正确了IB1，IB2和IB4，而设备D接收正确了IB1，IB2和IB3；若按照相关技术中基于TB的重传机制，则会继续重传IB1～IB4，以设备C接收IB3为例，其是否能在重传时接收正确，只取决于第二次传输的IB3是否能够接收正确。采用本申请实施例中的技术方案，发送块编码后的块编码输出块OB1～OB4，其中，OB1～OB4如下所示，对于设备C，只需接收正确OB1～OB4中的任意一个就可以恢复出IB3，而对于设备D，只需接收正确OB1，OB3和OB4中的任意一个就可以恢复出IB4，从而大大提高了重传的可靠性。
Figure PCTCN2020085698-appb-000006
Figure PCTCN2020085698-appb-000007
Figure PCTCN2020085698-appb-000008
Figure PCTCN2020085698-appb-000009
在一实施例中，块编码矩阵可以为满秩矩阵，如下所示，并且运算规则可以为异或。在OB1～OB4全部接收正确的情况下，可以独立恢复出IB1～IB4。
Figure PCTCN2020085698-appb-000010
在一实施例中，在下行发送广播、组播或单播第二数据单元至接收端的情况下，在当前传输对应的下行控制信息(Downlink Control Information，DCI)或高层指令中携带块编码控制信息。
在一实施例中，在上行发送的情况下，接收当前传输对应的DCI或高层指 令中携带的块编码控制信息。
在一实施例中，在直通链路发送的情况下，在直通链路控制信息(SideLink Control Information，SCI)中携带块编码控制信息。
在一实施例中，在直通链路发送的情况下，还包括，接收当前传输对应的DCI或高层指令中携带的块编码控制信息。
在一实施例中，在基站广播、组播或单播一个第一数据单元至UE的情况下，即在下行发送的情况下，第一数据单元对应的控制信息可以携带在DCI或高层信令(比如，无线资源控制(Radio Resource Control，RRC)信令)中。
在一实施例中，在UE发送一个第一数据单元至基站的情况下，即在上行发送的情况下，第一数据单元对应的控制信息可以由基站配置，即基站可以在DCI或高层信令中指示UE所使用的控制信息。
在一实施例中，在下行发送、上行发送或SideLink传输的情况下，控制信息中可以携带块编码控制信息。
在一实施例中，一个第一数据单元对应的块编码参数集可隐式或显式的携带在控制信息中。
在一种SideLink传输的实施例中，在SCI中携带块编码控制信息，其中，SCI可以是一个整体，也可以包含多个部分(比如，将SCI分为SCI第一部分和SCI第二部分)。UE在进行SideLink传输时，也会传输该次传输对应的SCI。
在一种SideLink传输的实施例中，UE可以接收其他设备发送的控制信息，比如，基站发送的DCI或其他信令(比如，RRC信令，广播信令等)，该控制信息包含指示给该UE的块编码控制信息。在一实施例中，该UE在发送一个第二数据单元时，可以在SCI中指示该TB对应的块编码控制信息。
在一实施例中，在上行或下行传输中，可以在下行信令中携带上行或下行控制信息，比如，下行信令可以是基站发送的DCI或其他信令(RRC信令，广播信令等)。
在一种上行传输的实施例中，UE可以接收基站发送的下行信令，并且在下行指令中携带上行控制信息，该上行控制信息包含指示给该UE的块编码控制信息，该块编码控制信息用于确定UE在上行发送所使用的块编码参数集。
在一种下行传输的实施例中，基站在发送一个第二数据单元至接收端的情况下，还发送该第二数据单元对应的下行信令，其中，下行信令包括下行控制信息，并且可以在下行控制信息中指示该第二数据单元对应的块编码控制信息。其中，该基站可以为调度节点。
在一实施例中，在SideLink通信的过程中，可以发送一个TB，并且可以选择其不同的冗余版本进行发送，以便接收端进行HARQ合并接收。比如，可以通过多次传输多个RV版本(比如，RV0，RV2，RV1或RV3)。示例性地，第一次传输对应的冗余版本为RV0，第二次传输对应的冗余版本为RV2，第三次传输对应的冗余版本为RV1，第四次传输对应的冗余版本为RV3，第五次传输对应的冗余版本再重新回到RV0，以此类推。
对于发送的SideLink信号，SideLink信号可以包括SCI以及对应的数据信息(data)这两部分。一个实施例中，图3是本申请实施例提供的一种SCI和SCI数据信息之间的关系示意图。如图3所示，每个SideLink数据信息都有对应的SCI。图4是本申请实施例提供的另一种SCI和SCI数据信息之间的关系示意图。如图4所示，不同的SideLink数据信息也可以对应相同的SCI。本申请实施例中的RV，块编码的分割等都是针对SideLink数据信息来说的。其中，控制信息可以承载在控制信道(Control Channel，CCH)或数据信道(sharing channel，SCH)上，SideLink数据信息可以承载在数据信道上。
在一实施例中，在车联网中，以车辆A广播一个第一数据单元(比如，TB或CBG)给临近的其他车辆为例，在广播情况下，接收端不向发送端进行反馈。假设A周围有车辆B和C，为了保证该数据包的可靠性，车辆A选择将该TB进行盲重传，假设为对该TB进行三次传输，以及该TB经过分段分割后包含N个CB。若一个参与块编码的块编码输入块IB包含一个CB，其中，所有CB的长度相等，即参与块编码的块编码输入块有N个。
在一个SideLink资源上进行第一次传输，第一次传输不使用块编码，即将N个IB级联之后，发送至接收端。一个实施例中，第一次对应的块编码矩阵X为N阶单位方阵；且在该TB对应的SCI中指示该TB对应的RV版本为RV0，且RV0对应块编码参数集X。
在一个SideLink资源上进行第二次传输，第二次传输对应的块编码参数集为Y，即可以将N个IB通过块编码转换为N个块编码后的分段，并进行后续的发送操作。在一实施例中，第二次使用的块编码矩阵为N阶方阵，且该矩阵为行/列满秩矩阵；且在该TB对应的SCI中指示该TB对应的RV版本为RV2，且RV2对应块编码参数集Y。
在一个SideLink资源上进行第三次传输，第三次传输对应的块编码参数集为Z，在该TB对应的SCI中指示该TB对应的RV版本为RV1，即RV1对应块编码参数集Z。在一个实施例中，第三次传输使用的块编码参数集Z可以与块编码参数集Y相同，即在所有重传中，不同的RV版本都使用相同的块编码参数集。
作为接收端的车辆B，C在接收到车辆A的广播后，根据SCI中携带的RV版本指示，以及RV与块编码参数集的对应关系，确定当前传输使用的块编码参数集，并根据块编码参数集以及以前接收正确的CB进行块解码，恢复出原始的数据，即恢复出原始信息块。
在一实例中，发送端或者接收端根据RV与块编码参数集的对应关系确定当前传输使用的块编码参数集时，还包括，确定当前TB或第一数据单元包含的块编码输入块的数量，即一个块编码矩阵的维度和块编码输入块的数量有关。
在一实施例中，RV与块编码参数集的对应关系可以由协议预定义，也可以由网络(比如，基站，其他高层实体)配置，或者由网络预配置确定。其中，关于预定义、配置和预配置的区别参见上述实施例的描述。在一实施例中，可以在SCI中设置是否使能块编码的块编码使能指示信息，当块编码使能指示信息为使能时，与RV对应的块编码参数集可以被使用；若块编码使能指示信息为去使能，则与RV对应的块编码参数集不能被使用。
在一个实施例中，一个参与块编码的块编码输入块可以包含多个CB。比如，将N个CB划分为M个块编码输入块或CBG，其中，M 1个CBG包含
Figure PCTCN2020085698-appb-000011
个CB，剩余的CBG包含
Figure PCTCN2020085698-appb-000012
个CB，其中，
Figure PCTCN2020085698-appb-000013
为下取整，M 1＝N mod M，即mod为取余运算。其中，需要进行块编码的块编码输入块是相等的，在一实施例中，上述M 1个CBG之间进行块编码运算，剩余的CBG之间进行块编码运算。比如，对于一个块编码向量，M 1个CBG的系数为非0时，则剩余CBG的系数全部为0；或者，M-M 1个CBG的系数为非0时，则对应的M 1个CBG的系数全部为0；或者，扩展剩余CBG的长度，以便进行块编码运算。
在一实施例中，一个参与块编码的块编码输入块包含一个CB，比如，将N个CB划分为M个CBG，则其中M 1个CBG包含
Figure PCTCN2020085698-appb-000014
个CB，剩余的CBG包含
Figure PCTCN2020085698-appb-000015
个CB，其中，M 1＝N mod M，mod为取余运算。在一实施例中，在M个CBG中的每个CBG内进行块编码运算，比如，在生成一个CBG中的一个块编码输入块的情况下，只有该CBG内的每个CB参与块编码，比如，该CBG内的CB对应的块编码系数可以是非0值，其他CBG的系数可以全是0。在传输包含多个CBG时，分别对每一个CBG应用实施例中应用于发送端的数据传输方法。即将一个第一数据单元划分为多个子数据单元，每个子数据单元包含多个IB，子数据单元的IB之间进行块编码。
在一实施例中，块编码后的分段数可以不等于块编码输入块的数目N，比如，块编码矩阵可以不是方阵。
在一实施例中，上述过程也适用于设备进行的组播和单播发送。比如，组播和单播可以去使能接收端反馈，在重传时，仍然可以使用盲重传。
图5是本申请实施例提供的另一种数据传输方法的流程图。本实施例适用于对块编码输出块进行译码的情况。如图5所示，本实施例的方法包括S220-S260。
S220、接收包含至少一个块编码输出块的第二数据单元。
S240、确定第二数据单元对应的块编码参数集。
S260、对块编码输出块进行块译码，恢复得到块编码输入块。
在一实施例中，对块编码输出块进行块译码，恢复得到块编码输入块，包括：基于本次之前接收的至少一个第二数据单元，与本次接收的至少一个第二数据单元进行块译码，恢复得到对应的块编码输入块；本次之前接收的第二数据单元中包括至少一个译码成功的块编码输入块，和/或，至少一个译码成功的块编码输出块。
在一实施例中，接收端在进行块译码时，不仅使用本次接收的第二数据单元包含的一个或多个OB，还可以使用以前接收正确的OB或者IB。其中，一个第二数据单元接收正确/错误是指，根据以前的接收进行块译码，获得发送端发送的IB信息，并根据恢复的IB的正确/错误判断整个第一数据单元的正确或者错误。
在一实例中，在每次传输第一数据单元，所使用的RV版本以及块编码参数集都可以不同。比如，设备A第一次发送RV0，且第一次没有进行块编码，设第一次传输包括RV0的四个IB，IB1～IB4，接收端B在第一次成功接收IB1～IB3，发送端第二次盲重传使用RV2，且使用块编码，如下所示：
Figure PCTCN2020085698-appb-000016
Figure PCTCN2020085698-appb-000017
Figure PCTCN2020085698-appb-000018
Figure PCTCN2020085698-appb-000019
设接收端B只接收正确OB1，则如果想恢复IB4，则需要将原来接收正确的IB1～IB3与OB1进行运算获得IB4，但是接收端B接收正确的IB1～IB3是RV0版本，而OB1是RV2版本的IB1～IB4经过块编码之后获得，接收端需要根据接收正确的RV0版本的IB1～IB3生成RV2版本的IB1～IB3，从而和OB1进行块译码，以用于恢复IB4。
在一实施例中，每次传输第一数据单元所使用相同的RV版本以及不同的块编码参数集。比如，重传始终使用RV0版本的IB以用于块编码，从而接收端不 需要对接收正确的IB进行处理生成其他RV版本的IB，从而降低接收端的解码复杂度。
在一实施例中，当重传小于/等于一码率门限时可以使用该方法，或低版本或者低能力的UE采用该方法以降低UE复杂度越低。
在一实施例中，每次传输第一数据单元所使用不同的RV版本以及相同的块编码参数集，从而接收端就可以对不同传输次数的同一个OB进行HARQ合并。
在一实施例中，数据传输方法，还包括：接收当前传输对应的控制信息，或，发送当前传输对应的控制信息。
在一实施例中，控制信息包括：当前传输对应的块编码控制信息，块编码控制信息用于确定当前传输中的每个第二数据单元对应的块编码参数集的信息。
在一实施例中，数据传输方法，还包括：配置或预配置块编码参数集与传输次序之间的映射关系。
在一实施例中，块编码控制信息包括：当前传输对应的传输次序。
在一实施例中，传输次序为包括：冗余版本或当前传输的传输次数。
在一实施例中，数据传输方法，还包括：配置或预配置块编码序号与块编码参数集之间的映射关系，块编码序号与块编码参数集一一对应。
在一实施例中，块编码控制信息包括：块编码序号。
在实施例中，对控制信息、块编码控制信息、传输次序、块编码序号的解释见上述实施例中的描述，在此不再赘述。
在一实施例中，在下行接收的情况下，接收当前传输对应的DCI或高层指令中携带块编码控制信息。
在一实施例中，在上行接收的情况下，在发送的当前传输对应的DCI或高层指令中携带块编码控制信息。
在一实施例中，在直通链路接收的情况下，接收在直通链路控制信息SCI中携带的块编码控制信息。
在一实施例中，在直通链路接收的情况下，还包括，接收当前传输对应的DCI或高层指令中携带的块编码控制信息。
在一实施例中，对第二数据单元重传对应的块编码参数集进行一次指示的方法进行描述。在一实施例中，一个第一数据单元的不同RV版本有各自对应的块编码参数集，由协议预定义这种RV与块编码参数集的对应关系，或者由基站 或网络配置这种对应关系，或预配置这种对应关系。则在一次第一数据单元传输(重传)时，在对应的块编码控制信息中指示RV，则隐含指示了在该次第一数据单元传输/重传对应的块编码参数集合。
在一实施例中，首次传输可以不使用块编码，即块编码矩阵为单位矩阵。比如，RV0的第一数据单元不使用块编码，而只有其他RV使用块编码，另外，不同的RV可以对应相同的块编码参数集。
在一实施例中，一个第一数据单元的不同传输次序有各自对应的块编码参数集。比如，第一次传输对应块编码参数集A，第二次为块编码参数集B，第三次可以仍然为块编码参数集A。可以由协议预定义这种传输次序与块编码参数集的对应关系，或者由基站或网络配置这种对应关系，或预配置这种对应关系。则在一次第一数据单元传输(重传)时，在对应的控制信息中指示该传输次序，则隐含指示了该次数据单元传输(重传)对应的块编码参数集。其中，传输次序为当前传输的传输次数，即根据第一数据单元传输/重传对应的当前传输的传输次数，即可确定对应的块编码参数集。
在一实施例中，一种块编码参数集或模式对应有一个块编码序号。可以由协议预定义这种块编码与块编码参数集或模式的对应关系，或者由基站或网络配置这种对应关系，或预配置这种对应关系。则在第一数据单元的一次传输/重传时，在对应的块编码控制信息中指示该块编码参数集或块编码序号，则相当于指示了该次第一数据单元传输/重传对应的块编码参数集。
在一实施例中，在控制信息还包括：块编码使能指示信息，其中，块编码使能指示信息用于指示是否使能块编码，若使能，在第一数据单元的当前传输/重传中，对应的块编码参数集可用于该次的传输和编码；反之，在第一数据单元的当前传输/重传中，对应的块编码参数集不可用于该次的传输和编码。
在一实施例中，在基于TB反馈的重传中，发送端仍然在一些情况下重传一个或者多个TB，其中，发送端在进行的一次传输中，可以包含一个或者多个TB。每个TB还可以包含一个或多个CBG。本实施例中，以一个TB的重传为例，若存在多个TB，则每个TB分别进行下述块编码过程。
在车联网中，以车辆组播一个第一数据单元(TB或CBG)给临近的其他车辆为例，其中，组内有车辆B和车辆C。假设TB经过分段分割后包含N个CB，并且参与块编码的一个第一数据单元只包含一个CB，其中，所有CB的长度相等，接收端根据接收情况对TB的接收进行反馈。
在一个SideLink资源上进行第一次传输，第一次传输不使用块编码，即将N个CB级联后进行发送，即第一次使用的块编码矩阵X为N阶单位方阵；且 在该TB对应的SCI中指示该TB为首次传输，首次传输对应的块编码参数集X。
作为接收端的车辆B，C根据接收情况进行反馈，比如，车辆B反馈NACK，则车辆A可以在一个SideLink资源上进行第二次重传，且在该TB对应的SCI中指示该TB为第二次传输，第二次传输对应块编码参数集Y。
若作为发送端的车辆A接收到NACK，则在一个SideLink资源上继续重传，直到没有收到NACK或者收到全部组成员(车辆B和车辆C)的ACK，或者，达到最大重传次数。为了能够确定每次传输对应的块编码参数集，在第i次传输的TB对应的SCI中指示该TB的传输次数，即当前传输的传输次数对应一个块编码参数集。
作为接收端的接收车辆B，C在接收到车辆A的组播后，根据SCI中携带的块传输序号与块编码参数集的对应关系，或者，根据SCI中携带的传输次序与块编码参数集的对应关系，确定当前传输对应的块编码参数集。
在一实施例中，发送端/接收端根据传输次序与块编码参数集的对应关系确定当前传输使用的块编码参数集的情况下，还包括，确定当前TB或第一数据单元包含的块编码输入块的数量，即一个块编码矩阵的维度和块编码输入块的数量有关。
在一实施例中，传输次序与块编码参数集的对应关系可以由协议预定义，也可以由网络(比如，基站，其他高层实体)配置，也可以由网络预配置确定。在一实施例中，可以在SCI中设置是否使能块编码的块编码使能指示信息。在块编码使能指示信息为使能的情况下，与RV对应的块编码参数集可以被使用；在块编码使能指示信息为去使能的情况下，则与RV对应的块编码参数集不可以被使用。
在一实施例中，一个参与块编码的块编码输入块包含多个CB，比如，可将N个CB划分为M个块编码输入块/CBG，M个CBG之间进行块编码获得对应的块编码输出块。
在一实施例中，一个参与块编码的块编码输入块包含一个CB，比如，将N个CB划分为M个CBG，比如，可对M个CBG中的每个CBG内进行块编码运算。
在一个实例中，块编码后得到的块编码输出块数量可以不等于块编码输入块的数目N，例如块编码矩阵可以不是方阵。
在一实施例中，实施例中的数据传输方法可适用于设备进行的基于ACK/NACK的组播，广播和单播发送。在一实施例中，比如，发送端进行广播发送，若接收端接收正确，则不进行反馈或反馈ACK，接收错误反馈NACK； 或发送端进行组发送，若接收端接收正确，则不进行反馈或反馈ACK，接收错误反馈NACK；发送端进行单播发送，若接收端接收正确反馈ACK，接收错误反馈NACK。
在一实施例中，一个第一数据单元接收正确/错误是指，将接收的经过块编码后得到的块编码输出块进行块译码，获得发送端发送的块编码输入块的信息，并根据恢复的块编码输入块的正确/错误判断整个第一数据单元的正确或者错误。
在一实施例中，基于CBG的反馈的重传中，发送端仍然可以在一些情况下重传整个CBG，CBG内的多个CB可以使用块编码提高重传可靠性。
在一实施例中，发送端或接收端进行的一次传输可以包含一个或者多个TB，每一个TB还可以包含一个或多个CBG。在本实施例中，对于每个需要重传的CBG可以分别进行下述块编码过程。
比如，设备A进行组播，一个组播TB包括的N个CB可以划分为M个CBG，则其中M 1个CBG包含
Figure PCTCN2020085698-appb-000020
个CB，剩余的CBG包含
Figure PCTCN2020085698-appb-000021
个CB。其中，mod为取余运算。接收端向发送端发送CBG反馈，确定没有正确接收的CBG的索引。比如，有K个CBG没有正确接收，在下一次传输中可以只传输未正确接收的K个CBG，并在每个CBG内进行块编码，即将CBG内的多个CB进行块编码。其中，不同CBG之间的CB不会进行块编码。
在一个实例中，块编码后的块编码输出块数量可以不等于块编码输入块的数目N。比如，块编码矩阵可以不是方阵。
图6是本申请实施例提供的一种数据传输装置的结构框图。如图6所示，本实施例提供的数据传输装置包括编码模块320和第一发送模块340。
编码模块320，设置为通过当前传输对应的块编码参数集对第一数据单元中的至少一个块编码输入块进行块编码，生成对应的块编码输出块；第一发送模块340，设置为将包含至少一个块编码输出块的第二数据单元发送至接收端。
本实施例提供的数据传输装置设置为实现图2所示实施例的数据传输方法，本实施例提供的数据传输装置实现原理和技术效果类似，此处不再赘述。
在一实施例中，第一数据单元为TB或CBG；每个TB包含至少一个CBG，每个CBG包含至少一个编码块CB。
在一实施例中，每个块编码参数集包括：多个块编码向量或多组块编码参数，每个块编码向量或每组块编码参数用于将多个块编码输入块编码为一个块编码输出块；或者，当前传输对应的块编码参数集对应一个块编码矩阵，块编 码矩阵的一行或一列用于将多个块编码输入块编码为一个块编码输出块。
在一实施例中，数据传输装置，还包括：
第一确定模块，设置为确定第一数据单元中包含块编码输入块的数量；第二确定模块，设置为根据块编码输入块的数量确定块编码矩阵的列数或行数、块编码向量的维度或块编码参数的元素数中的一个。
在一实施例中，块编码输入块为：至少一个对第一数据单元进行分割之后得到的原始信息块，或者，至少一个对一个或多个原始信息块添加循环冗余校验CRC比特得到的检验信息块，或者，至少一个对一个或多个检验信息块进行信道编码之后得到的信道编码信息块，或者，至少一个对一个或多个信道编码信息块进行速率匹配之后得到的匹配信息块。
在一实施例中，第二数据单元，包括：
对每个块编码输出块添加CRC比特得到校验信息块，对校验信息块进行信道编码得到信道编码信息块，对信道编码信息块进行速率匹配得到匹配信息块，对匹配信息块进行级联得到级联信息块；或者，对校验信息块进行信道编码得到信道编码信息块，对信道编码信息块进行速率匹配得到匹配信息块，对匹配信息块进行级联得到级联信息块；或者，对信道编码信息块进行速率匹配得到匹配信息块，对匹配信息块进行级联得到级联信息块；或者，对匹配信息块进行级联得到级联信息块。
在一实施例中，数据传输装置，还包括：
第一配置模块，设置为配置或预配置每个第一数据单元中块编码输入块的最大数目与每个第一数据单元长度之间的对应关系。
或者，第二配置模块，设置为配置或预配置每个第一数据单元中块编码输入块的数量。
在一实施例中，数据传输装置，还包括：
第一接收模块，设置为从调度节点或接收端接收当前传输对应的控制信息，和/或，第二发送模块，设置为发送当前传输对应的控制信息。
在一实施例中，控制信息包括：当前传输对应的块编码控制信息，块编码控制信息用于确定当前传输中的第二数据单元对应的块编码参数集的信息。
在一实施例中，控制信息还包括：块编码使能指示信息，块编码使能指示信息用于指示在当前传输中是否使能块编码的信息。
在一实施例中，控制信息还包括下述至少之一：发送端标识、目的接收端标识或者目的接收端组标识、混合自动重传请求HARQ进程号、新数据指示 NDI。
在一实施例中，数据传输装置，还包括：
第三配置模块，设置为配置或预配置块编码参数集与传输次序之间的映射关系。
在一实施例中，块编码控制信息包括：当前传输对应的传输次序。
在一实施例中，传输次序包括：冗余版本或当前传输的传输次数。
在一实施例中，数据传输装置，还包括：
第四配置模块，设置为配置或预配置块编码序号与块编码参数集之间的映射关系，块编码序号与块编码参数集一一对应。
在一实施例中，块编码控制信息包括：块编码序号。
在一实施例中，在下行发送广播、组播或单播第二数据单元至接收端的情况下，在当前传输对应的下行控制信息DCI或高层指令中携带块编码控制信息。
在一实施例中，在上行发送的情况下，接收当前传输对应的DCI或高层指令中携带的块编码控制信息。
在一实施例中，在直通链路发送的情况下，在直通链路控制信息SCI中携带块编码控制信息。
在一实施例中，在直通链路发送的情况下，还包括，接收当前传输对应的DCI或高层指令中携带的块编码控制信息。
图7是本申请实施例提供的另一种数据传输装置的结构框图。如图7所示，本实施例提供的数据传输装置包括第一接收模块420、确定模块440和译码模块460。
第一接收模块420，设置为接收包含至少一个块编码输出块的第二数据单元；确定模块440，设置为确定第二数据单元对应的块编码参数集；译码模块460，设置为对块编码输出块进行块译码，恢复得到块编码输入块。
本实施例提供的数据传输装置设置为实现图5所示实施例的数据传输方法，本实施例提供的数据传输装置实现原理和技术效果类似，此处不再赘述。
在一实施例中，数据传输装置，还包括：
第二接收模块，设置为接收当前传输对应的控制信息，或，第一发送模块，设置为发送当前传输对应的控制信息。
在一实施例中，控制信息包括：当前传输对应的块编码控制信息，块编码控制信息用于确定当前传输中的每个第二数据单元对应的块编码参数集的信 息。
在一实施例中，数据传输装置，还包括：
第一配置模块，设置为配置或预配置块编码参数集与传输次序之间的映射关系。
在一实施例中，块编码控制信息包括：当前传输对应的传输次序。
在一实施例中，传输次序包括：冗余版本或当前传输的传输次数。
在一实施例中，数据传输装置，还包括：
第二配置模块，设置为配置或预配置块编码序号与块编码参数集之间的映射关系，块编码序号与块编码参数集一一对应。
在一实施例中，块编码控制信息包括：块编码序号。
在一实施例中，在下行接收的情况下，接收当前传输对应的DCI或高层指令中携带块编码控制信息。
在一实施例中，在上行接收的情况下，在发送的当前传输对应的DCI或高层指令中携带块编码控制信息。
在一实施例中，在直通链路接收的情况下，接收在直通链路控制信息SCI中携带的块编码控制信息。
在一实施例中，在直通链路接收的情况下，还包括，接收当前传输对应的DCI或高层指令中携带的块编码控制信息。
在一实施例中，译码模块，包括：基于本次之前接收的至少一个第二数据单元，与本次接收的至少一个第二数据单元进行块译码，恢复得到对应的块编码输入块；本次之前接收的第二数据单元中包括至少一个译码成功的块编码输入块，和/或，至少一个译码成功的块编码输出块。
图8是本申请实施例提供的一种设备的结构示意图。如图8所示，本申请提供的设备，包括：处理器510以及存储器520。该设备中处理器510的数量可以是一个或者多个，图8中以一个处理器510为例。该设备中存储器520的数量可以是一个或者多个，图8中以一个存储器520为例。该设备的处理器510以及存储器520可以通过总线或者其他方式连接，图8中以通过总线连接为例。实施例中，该设备为发送端。其中，发送端可以为调度节点、基站或UE中的其中一个。
存储器520作为一种计算机可读存储介质，可设置为存储软件程序、计算机可执行程序以及模块，如本申请任意实施例的设备对应的程序指令/模块(例如，数据传输装置中的编码模块和第一发送模块)。存储器520可包括存储程 序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序；存储数据区可存储根据设备的使用所创建的数据等。此外，存储器520可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他非易失性固态存储器件。在一些实例中，存储器520可进一步包括相对于处理器510远程设置的存储器，这些远程存储器可以通过网络连接至设备。上述网络的实例包括但不限于互联网、企业内部网、局域网、移动通信网及其组合。
上述提供的设备可设置为执行上述任意实施例提供的应用于发送端的数据传输方法，具备相应的功能和效果。
当设备为接收端时，对应存储器520中存储的程序可以是本申请实施例所提供应用于接收端的数据传输方法对应的程序指令/模块，处理器510通过运行存储在存储器520中的软件程序、指令以及模块，从而执行计算机设备的一种或多种功能应用以及数据处理，即实现上述方法实施例中应用于接收端的数据传输方法。可以理解的是，上述设备为接收端时，可执行本申请任意实施例所提供的应用于接收端的数据传输方法，且具备相应的功能和效果。其中，接收端可以为基站或UE中的其中一个。
本申请实施例还提供一种包含计算机可执行指令的存储介质，计算机可执行指令在由计算机处理器执行时用于执行一种数据传输方法，该方法应用于发送端侧，该方法包括：通过当前传输对应的块编码参数集对第一数据单元中的至少一个块编码输入块进行块编码，生成对应的块编码输出块；将包含至少一个块编码输出块的第二数据单元发送至接收端。
本申请实施例还提供一种包含计算机可执行指令的存储介质，计算机可执行指令在由计算机处理器执行时用于执行一种数据传输方法，该方法应用于接收端侧，该方法包括：接收包含至少一个块编码输出块的第二数据单元；确定第二数据单元对应的块编码参数集；对块编码输出块进行块译码，恢复得到块编码输入块。
术语用户设备涵盖任何适合类型的无线用户设备，例如移动电话、便携数据处理装置、便携网络浏览器或车载移动台。
本申请的多种实施例可以在硬件或专用电路、软件、逻辑或其任何组合中实现。例如，一些方面可以被实现在硬件中，而其它方面可以被实现在可以被控制器、微处理器或其它计算装置执行的固件或软件中，尽管本申请不限于此。
本申请的实施例可以通过移动装置的数据处理器执行计算机程序指令来实现，例如在处理器实体中，或者通过硬件，或者通过软件和硬件的组合。计算 机程序指令可以是汇编指令、指令集架构(Instruction Set Architecture，ISA)指令、机器指令、机器相关指令、微代码、固件指令、状态设置数据、或者以一种或多种编程语言的任意组合编写的源代码或目标代码。
本申请附图中的任何逻辑流程的框图可以表示程序步骤，或者可以表示相互连接的逻辑电路、模块和功能，或者可以表示程序步骤与逻辑电路、模块和功能的组合。计算机程序可以存储在存储器上。存储器可以具有任何适合于本地技术环境的类型并且可以使用任何适合的数据存储技术实现，例如但不限于只读存储器(Read-Only Memory，ROM)、随机访问存储器(Random Access Memory，RAM)、光存储器装置和系统(数码多功能光碟(Digital Video Disc，DVD)或光盘(Compact Disk，CD))等。计算机可读介质可以包括非瞬时性存储介质。数据处理器可以是任何适合于本地技术环境的类型，例如但不限于通用计算机、专用计算机、微处理器、数字信号处理器(Digital Signal Processing，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、可编程逻辑器件(Field-Programmable Gate Array，FPGA)以及基于多核处理器架构的处理器。

Claims (36)

  1. 一种数据传输方法，包括：
    通过当前传输对应的块编码参数集对第一数据单元中的至少一个块编码输入块进行块编码，生成与所述至少一个块编码输入块对应的块编码输出块；
    将包含至少一个块编码输出块的第二数据单元发送至接收端。
  2. 根据权利要求1所述的方法，其中，所述第一数据单元为传输块TB或编码块组CBG；每个TB包含至少一个CBG，每个CBG包含至少一个编码块CB。
  3. 根据权利要求1所述的方法，其中，每个块编码参数集包括：多个块编码向量或多组块编码参数，每个块编码向量或每组块编码参数用于将多个块编码输入块编码为一个块编码输出块；
    或者，所述当前传输对应的块编码参数集对应一个块编码矩阵，所述块编码矩阵的一行或一列用于将多个块编码输入块编码为一个块编码输出块。
  4. 根据权利要求3所述的方法，还包括：
    确定所述第一数据单元中包含所述块编码输入块的数量；
    根据所述块编码输入块的数量确定所述块编码矩阵的列数或行数、所述块编码向量的维度或所述块编码参数的元素数中的一个。
  5. 根据权利要求1所述的方法，其中，所述块编码输入块为：对所述第一数据单元进行分割之后得到的至少一个原始信息块，
    或者，对至少一个原始信息块添加循环冗余校验CRC比特得到的至少一个检验信息块，
    或者，对至少一个检验信息块进行信道编码之后得到的至少一个信道编码信息块，
    或者，对至少一个信道编码信息块进行速率匹配之后得到的至少一个匹配信息块。
  6. 根据权利要求1所述的方法，其中，所述第二数据单元，包括：
    对每个块编码输出块添加CRC比特得到校验信息块，对所述校验信息块进行信道编码得到信道编码信息块，对所述信道编码信息块进行速率匹配得到匹配信息块，对所述匹配信息块进行级联得到级联信息块；
    或者，对校验信息块进行信道编码得到信道编码信息块，对所述信道编码信息块进行速率匹配得到匹配信息块，对所述匹配信息块进行级联得到级联信息块；
    或者，对信道编码信息块进行速率匹配得到匹配信息块，对所述匹配信息块进行级联得到级联信息块；
    或者，对匹配信息块进行级联得到级联信息块。
  7. 根据权利要求1所述的方法，还包括：
    配置或预配置每个第一数据单元中所述块编码输入块的最大数目与所述第一数据单元长度之间的对应关系；
    或者，配置或预配置每个第一数据单元中所述块编码输入块的数量。
  8. 根据权利要求1所述的方法，还包括以下至少之一：
    从调度节点或所述接收端接收所述当前传输对应的控制信息；
    发送所述当前传输对应的控制信息。
  9. 根据权利要求8所述的方法，其中，所述控制信息包括：所述当前传输对应的块编码控制信息，其中，所述块编码控制信息用于确定所述当前传输中的所述第二数据单元对应的块编码参数集的信息。
  10. 根据权利要求8所述的方法，其中，所述控制信息包括：块编码使能指示信息，其中，所述块编码使能指示信息用于指示在所述当前传输中是否使能块编码的信息。
  11. 根据权利要求8所述的方法，其中，所述控制信息包括以下至少之一：发送端标识、目的接收端标识或者目的接收端组标识、混合自动重传请求HARQ进程号、新数据指示NDI。
  12. 根据权利要求9所述的方法，还包括：
    配置或预配置所述块编码参数集与传输次序之间的映射关系。
  13. 根据权利要求9或12所述的方法，其中，所述块编码控制信息包括：所述当前传输对应的传输次序。
  14. 根据权利要求13所述的方法，其中，所述传输次序包括：冗余版本或所述当前传输的传输次数。
  15. 根据权利要求9所述的方法，还包括：
    配置或预配置块编码序号与所述块编码参数集之间的映射关系，其中，所述块编码序号与所述块编码参数集一一对应。
  16. 根据权利要求9或15所述的方法，其中，所述块编码控制信息包括：块编码序号。
  17. 根据权利要求9所述的方法，其中，在下行发送广播、组播或单播所述第二数据单元至所述接收端的情况下，在所述当前传输对应的下行控制信息DCI或高层指令中携带所述块编码控制信息。
  18. 根据权利要求9所述的方法，其中，在上行发送的情况下，所述方法还包括：
    接收所述当前传输对应的DCI或高层指令中携带的所述块编码控制信息。
  19. 根据权利要求9所述的方法，其中，在直通链路发送的情况下，在直通链路控制信息SCI中携带所述块编码控制信息。
  20. 根据权利要求9所述的方法，其中，在直通链路发送的情况下，所述方法还包括：
    接收所述当前传输对应的DCI或高层指令中携带的所述块编码控制信息。
  21. 一种数据传输方法，包括：
    接收包含至少一个块编码输出块的第二数据单元；
    确定所述第二数据单元对应的块编码参数集；
    对所述块编码输出块进行块译码，恢复得到块编码输入块。
  22. 根据权利要求21所述的方法，还包括：接收当前传输对应的控制信息，或，发送当前传输对应的控制信息。
  23. 根据权利要求22所述的方法，其中，所述控制信息包括：所述当前传输对应的块编码控制信息，其中，所述块编码控制信息用于确定所述当前传输中的每个第二数据单元对应的块编码参数集的信息。
  24. 根据权利要求23所述的方法，还包括：
    配置或预配置所述块编码参数集与传输次序之间的映射关系。
  25. 根据权利要求24所述的方法，其中，所述块编码控制信息包括：所述当前传输对应的传输次序。
  26. 根据权利要求25所述的方法，其中，所述传输次序包括：冗余版本或所述当前传输的传输次数。
  27. 根据权利要求23所述的方法，还包括：
    配置或预配置块编码序号与所述块编码参数集之间的映射关系，其中，所述块编码序号与所述块编码参数集一一对应。
  28. 根据权利要求27所述的方法，其中，所述块编码控制信息包括：块编 码序号。
  29. 根据权利要求23所述的方法，其中，在下行接收的情况下，所述方法还包括：
    接收所述当前传输对应的下行控制信息DCI或高层指令中携带的所述块编码控制信息。
  30. 根据权利要求23所述的方法，其中，在上行接收的情况下，在发送的所述当前传输对应的DCI或高层指令中携带所述块编码控制信息。
  31. 根据权利要求23所述的方法，其中，在直通链路接收的情况下，所述方法还包括：
    接收在直通链路控制信息SCI中携带的所述块编码控制信息。
  32. 根据权利要求23所述的方法，其中，在直通链路接收的情况下，所述方法还包括：
    接收所述当前传输对应的DCI或高层指令中携带的所述块编码控制信息。
  33. 根据权利要求21所述的方法，其中，所述对块编码输出块进行块译码，恢复得到块编码输入块，包括：
    基于当前传输之前接收的至少一个第二数据单元，与所述当前传输接收的至少一个第二数据单元进行块译码，恢复得到对应的块编码输入块；
    其中，所述当前传输之前接收的第二数据单元中包括以下至少之一：
    至少一个译码成功的块编码输入块；
    至少一个译码成功的块编码输出块。
  34. 一种数据传输装置，包括：
    编码模块，设置为通过当前传输对应的块编码参数集对第一数据单元中的至少一个块编码输入块进行块编码，生成与所述至少一个块编码输入块对应的块编码输出块；
    第一发送模块，设置为将包含至少一个块编码输出块的第二数据单元发送至接收端。
  35. 一种数据传输装置，包括：
    第一接收模块，设置为接收包含至少一个块编码输出块的第二数据单元；
    确定模块，设置为确定所述第二数据单元对应的块编码参数集；
    译码模块，设置为对所述块编码输出块进行块译码，恢复得到块编码输入 块。
  36. 一种存储介质，存储有计算机程序，所述计算机程序被处理器执行时实现权利要求1-33任一项所述的数据传输方法。
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