WO2019206197A1 - Procédé et dispositif de transmission de données - Google Patents

Procédé et dispositif de transmission de données Download PDF

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Publication number
WO2019206197A1
WO2019206197A1 PCT/CN2019/084149 CN2019084149W WO2019206197A1 WO 2019206197 A1 WO2019206197 A1 WO 2019206197A1 CN 2019084149 W CN2019084149 W CN 2019084149W WO 2019206197 A1 WO2019206197 A1 WO 2019206197A1
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WO
WIPO (PCT)
Prior art keywords
coding block
decoding
retransmission data
verification result
receiving end
Prior art date
Application number
PCT/CN2019/084149
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English (en)
Chinese (zh)
Inventor
王俊伟
武雨春
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华为技术有限公司
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Publication of WO2019206197A1 publication Critical patent/WO2019206197A1/fr

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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
    • H04L1/12—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
    • 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
    • H04L1/1607—Details of the supervisory signal
    • 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
    • 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
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • 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
    • H04L1/1867—Arrangements specially adapted for the transmitter end

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a data transmission method and apparatus.
  • the next-generation radio (NR) communication system introduces a coded block group based on a transport block (TB) ACK/NAK feedback technology in long term evolution (LTE).
  • TB transport block
  • CBG Block group, CBG
  • ACK indicates that the acknowledged data has been accepted
  • NAK indicates that the data has been received but the data is incorrect.
  • the ACK/NAK feedback technology based on CBG is that when the transmitting end transmits the TB, the TB performs a cyclic redundancy check (CRC) addition and divides the CRC that is subjected to the CRC check into a plurality of coding blocks ( Code block, CB). Then, each CB is subjected to CRC addition, and a plurality of CBs added by the CRC are divided into a plurality of code block groups (CBGs) for scheduling and transmission, and each CBG includes at least one CRC after the CRC check.
  • CRC code block group
  • the NAK information is fed back to the CBG. If all the CBs in the CBG are successfully verified, the ACK information is fed back to the CBG. .
  • the transmitting end retransmits the CBG that is fed back to the NAK information according to the received HARQ information.
  • the present application provides a data transmission method and apparatus for solving the CBG-based retransmission technology, and the problem of low retransmission efficiency is low.
  • the application provides a data transmission method, where the method includes: receiving, by the receiving end, the first retransmission data sent by the transmitting end, and including the CB included in the first retransmission data received this time.
  • the first retransmission data includes a first CBG corresponding to a decoding verification result of a NAK in the N decoding verification results received by the transmitting end, the N decoding schools
  • the result of the test is that the receiving end feeds back the retransmission data sent by the sending end, and each of the first CBGs includes at least one CB, and the N is an integer greater than 0.
  • the receiving end sends a decoding verification result corresponding to the N second CBGs to the sending end, where the N second CBGs are the receiving end based on the first retransmitted data received this time.
  • the CBs are determined by the CB, and the CBs included in any two second CBGs do not overlap each other.
  • the receiving end receives, by the receiving end, the second retransmission data retransmitted by the transmitting end, where the second retransmission data includes a decoding verification of the NK in the N decoding verification results received by the transmitting end
  • the results correspond to the second CBG.
  • the receiving end re-determines the N second CBGs based on the received first retransmission data, and feeds back the re-determined decoding results of the N second CBGs respectively, because the N second The CBG is determined based on the first retransmission data, and the first retransmission data is the first CBG corresponding to the NAKs of the N decoding verification results received by the transmitting end respectively, and the first retransmission data is included.
  • the number of the first CBG is not greater than N.
  • the number of CBs included in the second CBG is smaller than the number of CBs included in the first CBG, so that the transmitting end can obtain N seconds when retransmitting.
  • the decoding check result corresponding to the CBG, so that the transmitting end can perform CB transmission according to the second CBG, and the number of CBs included in the second CBG is reduced compared with the number of CBs included in the first CBG, so that the number of CBs can be improved. Data retransmission efficiency.
  • the first retransmission data received by the receiving end includes CBG1 and CBG2, where CBG1 includes 4 CBs identified as 0-3, CBG2 includes 3 CBs identifying 4-6, and the receiving end includes CBG1 and CBG2.
  • Each CB is re-divided to obtain CBG'1, CBG'2, CBG'3, CBG'4, wherein CBG'1 includes CBs identified as 0 and 1, CBG'2 includes CBs, CBG's identified as 2 and 3.
  • the h second CBGs in the N second CBGs respectively include a CB, and the other of the N second CBGs except the h second CBGs
  • the two CBGs respectively include b CBs.
  • the P is the number of all CBs included in the first retransmission data received.
  • the a satisfies the following formula:
  • the b satisfies the following formula:
  • the number of CBs included in each second CBG may be as uniform as possible, that is, the number of CBs included in any two second CBGs.
  • the maximum difference is 1. Since the number of the first CBGs included in the first retransmission data is usually less than N, the number of CBs included in each second CBG may be reduced compared to the number of CBs included in any one of the first CBGs by the above method. Therefore, when the transmitting end performs retransmission, CB transmission is performed according to the second CBG, which can improve the data retransmission efficiency.
  • the first retransmission data carries a preset flag, where the preset flag is used to instruct the receiving end to feed back the decoding verification result corresponding to the N second CBGs respectively.
  • the receiving end can feed back the corresponding decoding and verification result of the N second CBGs to the transmitting end under the indication of the transmitting end, so that the retransmission rule adopted by the receiving end and the transmitting end can be unified.
  • the present application provides a data transmission method, where the method includes: a transmitting end sends first retransmission data to a receiving end, where the first retransmission data includes N translations received by the transmitting end last time.
  • the code check result is a first CBG corresponding to the decoding verification result of the NAK
  • the N decoding verification results are feedbacks of the retransmission data sent by the receiving end to the transmitting end last time.
  • the first CBG includes at least one CB, and the N is an integer greater than zero.
  • the sending end receives the decoding verification result corresponding to the N second CBGs sent by the receiving end, where the N second CBGs are the receiving end based on the first retransmitted data received this time.
  • the included CB is decoded, and the CB included in the first retransmission data received this time is determined, and the CBs included in any two second CBGs do not overlap each other, when at least one of the second CBGs
  • the decoding verification result corresponding to the second CBG is NAK, otherwise the decoding verification result corresponding to the second CBG is ACK.
  • the transmitting end divides the first retransmission data into the N second CBGs.
  • the transmitting end retransmits the second retransmission data to the receiving end, where the second retransmission data includes a decoding verification result of the NK in the N decoding verification results received by the transmitting end. Corresponding second CBG.
  • the transmitting end divides the first retransmission data into N second CBGs, and feeds back the determined decoding verification results corresponding to the N second CBGs respectively, because the N second CBGs are based on the first weight
  • the first CBG corresponding to the NAK in the N decoding verification results received by the transmitting end is determined by the data, and the number of the first CBG included in the first retransmission data is visible. Not greater than N.
  • the number of CBs included in the second CBG is smaller than the number of CBs included in the first CBG.
  • the transmitting end performs CB transmission according to the second CBG during retransmission. Since the number of CBs included in the second CBG is smaller than the number of CBs included in the first CBG, the data retransmission efficiency can be improved.
  • the h second CBGs in the N second CBGs respectively include a CB, and the other of the N second CBGs except the h second CBGs
  • the two CBGs respectively include b CBs.
  • the P is the number of all CBs included in the first retransmission data.
  • the a satisfies the following formula:
  • the b satisfies the following formula:
  • the number of CBs included in each second CBG may be as uniform as possible, that is, the number of CBs included in any two second CBGs.
  • the maximum difference is 1. Since the number of the first CBGs included in the first retransmission data is usually less than N, the number of CBs included in each second CBG may be reduced compared to the number of CBs included in any one of the first CBGs by the above method. Therefore, when the transmitting end performs retransmission, CB transmission is performed according to the second CBG, which can improve the data retransmission efficiency.
  • the first retransmission data carries a preset flag, where the preset flag is used to instruct the receiving end to feed back the decoding verification result corresponding to the N second CBGs respectively.
  • the transmitting end can instruct the receiving end to feed back the corresponding decoding and verifying result of the N second CBGs by carrying the preset flag in the retransmitted data, so that the retransmission adopted by the receiving end and the transmitting end can be unified. rule.
  • the present application provides a data transmission method, where the method includes: receiving, by a receiving end, first retransmission data sent by a transmitting end, where the first retransmission data is sent by the sending end to the initial
  • the original data of the receiving end is retransmitted data, the original data includes G CBGs, each CBG includes at least one CB, and the G is an integer greater than 0.
  • the receiving end decodes the CB included in the first retransmission data, and includes CB included in the stored original data according to a decoding verification result corresponding to the CB included in the first retransmission data.
  • the corresponding decoding verification results are correspondingly updated.
  • the receiving end When the receiving end carries the preset flag in the first retransmission data, the receiving end sends the decoding verification result corresponding to the G CBGs to the transmitting end, and the decoding corresponding to at least one CB in one CBG If the check result is an error, the CBG corresponding decoding check result is NAK, otherwise the CBG corresponding decoding check result is ACK, and the preset flag is used to indicate that the receiving end feeds back to the sending end.
  • the G-CBGs respectively correspond to decoding verification results. Receiving, by the receiving end, the second retransmission data sent by the sending end, where the second retransmission data is corresponding to a decoding verification result of the NK in the G decoding verification results received by the transmitting end CBG.
  • the transmitting end may detect a certain decoding check result in the HARQ feedback codebook sent by the receiving end as a NAK error as an ACK, so that the CBG corresponding to the decoding check result of the NAK is not used by the transmitting end when retransmitting. transmission.
  • the sender detects "1010" as "1110", so there is a CB with a decoding error in the second CBG, but the sender does not send the CBG when retransmitting.
  • the receiving end feeds back the decoding verification result corresponding to the first G original CBGs to the transmitting end when the first retransmission data carries the preset flag, and in this manner, the receiving end may In the feedback, the decoding verification result corresponding to the first G-first CBGs of the initial transmission is re-feedback, so that the transmitting end can correct the decoding verification result corresponding to the G first CBGs that are re-feedback by the receiving end.
  • the erroneous decoding check result is detected before, so that the CB of the previously missed decoding error can be resent to the receiving end.
  • the transmitting end detects "1010” as "1110", so the transmitting end does not send the CB of the decoding error included in the second CBG when retransmitting, and the receiving end indicates at the transmitting end during the subsequent retransmission. Re-feeding back the decoding verification result of the original data, so that the transmitting end determines the CB of the decoding error in the second CBG according to the decoding verification result of the original data re-feedback by the receiving end, so that the next retransmission will be used in the next retransmission.
  • the CB that decodes the error is sent to the receiving end.
  • the present application provides a data transmission method, including: a sending end sends a first data to a receiving end, where the first retransmitted data carries a preset flag, where the preset flag is used to indicate the receiving Transmitting, to the sending end, a decoding verification result corresponding to the G CBGs, where the first data is data that is retransmitted by the sending end for the original data originally sent to the receiving end, where the original data includes G CBGs, each CBG comprising at least one CB, the G being an integer greater than zero.
  • the sending end receives the decoding verification result corresponding to the G CBGs sent by the receiving end, and the decoding verification corresponding to the G CBGs respectively As a result, the receiving end decodes the CB included in the first retransmission data, and includes, according to the decoding verification result corresponding to the CB included in the first retransmission data, the stored original data.
  • the CB corresponding to the decoding verification result is correspondingly updated.
  • the transmitting end sends the second data to the receiving end, where the second retransmitted data is a CBG corresponding to a decoding verification result of the NAK in the decoding verification result received by the transmitting end.
  • the decoding result of the HARQ feedback code sent by the receiving end may be detected as an ACK by the NAK error, so that the CBG corresponding to the decoding result of the decoding by the transmitting end is not retransmitted.
  • the transmitting end instructs the receiving end to re-feed back the decoding verification result corresponding to the initially transmitted G first CBGs in the subsequent retransmission process. In this manner, the transmitting end may re-receive the receiving end. After the decoded decoding result corresponding to the G first CBGs is fed back, the decoding verification result of the previous detection error is corrected, so that the previously missed decoding error CB can be retransmitted to the receiving end.
  • the present application provides a receiving apparatus, including: a receiving unit, configured to receive first retransmission data that is sent by a transmitting end, where the first retransmission data includes a N that is received by the sending end.
  • the decoding result of the decoding is the first CBG corresponding to the decoding verification result of the NAK
  • the N decoding verification results are the feedback of the retransmission data sent by the receiving end to the transmitting end last time.
  • Each of the first CBGs includes at least one CB, and the N is an integer greater than zero.
  • a decoding unit configured to decode the CB included in the first retransmission data received by the receiving unit.
  • a sending unit configured to send, to the sending end, a decoding verification result corresponding to each of the N second CBGs, where the N second CBGs are based on the first retransmitted data that is received by the terminal device
  • the CBs included in the CB are determined, and the CBs included in any two second CBGs do not overlap each other.
  • the decoding check result corresponding to at least one CB in a second CBG is an error
  • the decoding corresponding to the second CBG The result of the check is NAK, otherwise the decoding check result corresponding to the second CBG is ACK.
  • the receiving unit is further configured to receive second retransmission data from the transmitting end, where the second retransmission data includes a decoding of a NAK in the N decoding verification results received by the transmitting end.
  • the verification result corresponds to the second CBG.
  • the h second CBGs in the N second CBGs respectively include a CB, and the other of the N second CBGs except the h second CBGs
  • the two CBGs respectively include b CBs.
  • the P is the number of all CBs included in the first retransmission data received; the a satisfies the following formula:
  • the b satisfies the following formula:
  • the first retransmission data carries a preset flag, where the preset flag is used to instruct the terminal device to feed back the decoding verification result corresponding to the N second CBGs respectively.
  • the application provides a sending apparatus, including: a sending unit, configured to send first retransmission data to a receiving end, where the first retransmitted data includes N decodings received by the transmitting end last time.
  • the first CBG corresponding to the decoding verification result of the NAK in the verification result, the N decoding verification result is the feedback of the retransmission data sent by the receiving end to the transmitting end last time, and each The first CBG includes at least one CB, and the N is an integer greater than zero.
  • a receiving unit configured to receive, respectively, a decoding verification result corresponding to the N second CBGs from the receiving end, where the N second CBGs are determined by the receiving end to be used in the first retransmitted data received this time.
  • the decoding verification result corresponding to the second CBG is NAK, otherwise the decoding verification result corresponding to the second CBG is ACK.
  • a dividing unit configured to divide the first retransmission data into the N second CBGs.
  • the sending unit is further configured to retransmit the second retransmission data to the receiving end, where the second retransmission data includes a decoding of the NK in the N decoding verification results received by the transmitting end.
  • the verification result corresponds to the second CBG.
  • the h second CBGs in the N second CBGs respectively include a CB, and the other of the N second CBGs except the h second CBGs
  • the two CBGs respectively include b CBs.
  • the P is the number of all CBs included in the first retransmission data.
  • the a satisfies the following formula:
  • the b satisfies the following formula:
  • the first retransmission data carries a preset flag, where the preset flag is used to instruct the receiving end to feed back the decoding verification result corresponding to the N second CBGs respectively.
  • the present application provides a receiving apparatus, including: a receiving unit, configured to receive first retransmission data from a transmitting end, where the first retransmission data is sent to the terminal device for initial transmission by the sending end
  • the original data is retransmitted data
  • the original data includes G CBGs, each CBG includes at least one CB, and the G is an integer greater than zero.
  • a decoding unit configured to decode the CB included in the first retransmission data received by the receiving unit.
  • an updating unit configured to perform corresponding update on the decoded verification result corresponding to the CB included in the stored original data according to the decoding verification result corresponding to the CB included in the first retransmission data.
  • a sending unit configured to: when the first retransmitted data carries a preset flag, send, to the sending end, a decoding verification result corresponding to the G CBGs respectively, when at least one CBG corresponds to a CBG
  • the code check result is an error
  • the decoding check result corresponding to the CBG is NAK
  • the decoding check result corresponding to the CBG is ACK.
  • the preset flag is used to instruct the terminal device to feed back, to the sending end, a decoding verification result corresponding to the G CBGs respectively.
  • the receiving unit is further configured to receive the second retransmission data sent by the sending end, where the second retransmission data is a decoding school that is a NAK in the G decoding verification results received by the transmitting end.
  • the application provides a sending apparatus, including: a sending unit, configured to send first retransmission data to a receiving end, where the first data is original data that is sent by the network device to the receiving end. Data to be retransmitted, the original data comprising G CBGs, each CBG comprising at least one CB, the G being an integer greater than zero. a receiving unit, configured to receive a decoding verification result corresponding to the G CBGs from the receiving end when a preset flag is carried in the first retransmission data, and to perform translation of at least one CB in a CBG When the code check result is an error, the decoding check result corresponding to the CBG is NAK, otherwise the decoding check result corresponding to the CBG is ACK.
  • a sending unit configured to send first retransmission data to a receiving end, where the first data is original data that is sent by the network device to the receiving end. Data to be retransmitted, the original data comprising G CBGs, each CBG comprising at least one CB,
  • the sending unit is further configured to send, to the receiving end, second retransmission data, where the second retransmission data is a CBG corresponding to a NAK in the received decoding verification result.
  • the preset flag is used to instruct the receiving end to feed back, to the network device, a decoding verification result corresponding to the G CBGs respectively.
  • the present application provides a terminal device, the device comprising a transceiver, a memory, and a processor, the memory for storing program code to be executed by the processor.
  • the transceiver is used to send and receive data.
  • the processor is configured to execute the program code stored in the memory, and is specifically configured to perform the method of any one of the first aspect or the first aspect, the third aspect, or the third aspect.
  • the present application provides a network device, the device comprising a transceiver, a memory, and a processor, the memory for storing program code to be executed by the processor.
  • the transceiver is used to send and receive data.
  • the processor is configured to execute the program code stored in the memory, and is specifically configured to perform the method of any one of the second aspect or the second aspect, the fourth aspect, or the fourth aspect.
  • the present application further provides a computer readable storage medium for storing any one of the design, the second aspect or the second aspect of the first aspect or the first aspect, Computer software instructions for use in any one of the design, the fourth aspect, or the fourth aspect of the third aspect, comprising any one of the first aspect or the first aspect described above A program designed according to any one of the design, the second aspect or the second aspect, the third aspect or the third aspect, the method of any one of the fourth aspect or the fourth aspect.
  • the embodiment of the present application provides a computer program product comprising instructions, when executed on a computer, causing a computer to perform any one of the above first aspect or the first aspect, the second aspect or the Any of the two aspects of the design, the third aspect or the third aspect of the design, the fourth aspect or the fourth aspect of the method.
  • FIG. 1 is a schematic structural diagram of a communication system provided by the present application.
  • FIG. 2 is a schematic diagram of a coding block configuration transmission provided by the present application.
  • FIG. 3 is a schematic diagram of coding block group division results provided by the present application.
  • FIG. 4 is a schematic diagram of a coding block group feedback result provided by the present application.
  • FIG. 5 is a schematic diagram of a coding block group decoding verification result provided by the present application.
  • FIG. 6 is a schematic diagram of a coding block group feedback result provided by the present application.
  • FIG. 7 is a schematic flowchart diagram of a data transmission method provided by the present application.
  • FIG. 8 is a schematic flowchart diagram of a data transmission method provided by the present application.
  • FIG. 9 is a schematic diagram of coding block group division results provided by the present application.
  • FIG. 10 is a schematic diagram of coding block group division results provided by the present application.
  • FIG. 11 is a schematic diagram of coding block group division results provided by the present application.
  • FIG. 12 is a schematic flowchart diagram of a data transmission method provided by the present application.
  • FIG. 13 is a schematic flowchart diagram of a data transmission method provided by the present application.
  • FIG. 14 is a schematic structural diagram of a terminal device according to the present application.
  • FIG. 15 is a schematic structural diagram of a network device according to the present application.
  • 16 is a schematic structural view of a device provided by the present application.
  • the data transmission method provided by the present application can be applied to a communication system.
  • the architecture of the communication system is as shown in FIG. 1.
  • the base station 101 and the terminal device 102 are connected, and the base station 101 and the terminal device 102 perform uplink data transmission and downlink data transmission.
  • the communication system involved in the embodiments of the present application may be various types of communication systems, for example, may be long term evolution (LTE), may be a fifth generation (5G) communication system, or may be a hybrid architecture of LTE and 5G.
  • LTE long term evolution
  • 5G fifth generation
  • the base station 101 may be a common base station (such as a Node B or an eNB), may be a new radio controller (NR controller), may be a gNode B (gNB) in a 5G system, or may be a centralized network.
  • a centralized unit which may be a new wireless base station, may be a radio remote module, may be a micro base station, may be a relay, may be a distributed network element, or may be a receiving point (transmission reception) Point, TRP) or transmission point (TP) or any other wireless access device, but embodiments of the present application are not limited thereto.
  • the access network includes at least one base station, wherein each base station can cover one or more cells.
  • the terminal device 102 also referred to as user equipment (UE) is a device that provides voice and/or data connectivity to users, for example, a handheld device with a wireless connection function, an in-vehicle device, and the like.
  • UE user equipment
  • Common terminals include, for example, mobile phones, tablets, notebook computers, PDAs, mobile internet devices (MIDs), wearable devices such as smart watches, smart bracelets, pedometers, and the like.
  • the next-generation radio (NR) communication system introduces a coded block group based on a transport block (TB) ACK/NAK feedback technology in long term evolution (LTE).
  • Block group, CBG) ACK/NAK feedback technology that is, when transmitting data to the UE, the base station performs a cyclic redundancy check (CRC) check on the TB, and then splits the TB that has undergone CRC check.
  • CRC cyclic redundancy check
  • Multiple code blocks (CBs) are formed, and a CRC check is performed for each CB block.
  • the base station divides multiple CB blocks into several CBGs for scheduling and transmission, as shown in FIG. 2 .
  • the UE After receiving multiple CBGs in a TB, the UE performs CRC check on all received CBs, and the receiving end feeds back ACK/NAK information according to the unit of CBG, that is, when CB in one CBG is correctly decoded.
  • the CBG feedback is ACK, otherwise the CBG feedback is NAK.
  • ACK indicates that the sent data has been accepted and does not need to be retransmitted by the base station.
  • NAK indicates that the data has been received but the data has an error and the base station is required to retransmit the CBG.
  • the base station receives the ACK/NAK information fed back by the UE, and retransmits the CBG for the CBG that is fed back to the NAK, and does not retransmit the CBG for the CBG that is fed back to the ACK.
  • the process of initial transmission, feedback, and retransmission based on CBG between the base station and the UE is described below by taking the TB transmitted by the base station to the UE into 14 CBs as an example.
  • the base station performs data transmission in a CBG manner through high-level signaling configuration, and the number of configured CBGs is 4.
  • the base station divides 14 CBs into 4 CBGs.
  • the base station can make the number of CBs in each CBG as uniform as possible when dividing the CBG, that is, the number of CBs of any two CBGs is at most one difference. Therefore, the four CBGs obtained by the division can be as shown in Fig.
  • CBG 0 ⁇ CB 0 , CB 1 , CB 2 , CB 3 ⁇
  • CBG 1 ⁇ CB 4 , CB 5 , CB 6 , CB 7 ⁇
  • CBG 2 ⁇ CB 8 , CB 9 , CB 10 ⁇
  • CBG 3 ⁇ CB 11 , CB 12 , CB 13 ⁇ .
  • the UE receives four CBGs initially transmitted by the base station, and decodes the CBs included in the four CBGs. It is assumed that the UE determines that the CB 5 , CB 6 and CB 12 are decoded incorrectly, and the UE sends a Hybrid Automatic Repeat reQuest (HARQ) feedback codebook corresponding to the initial transmission to the base station, and the HARQ feedback codebook is four CBGs. decoding corresponding check result, shown in Figure 4, wherein, in the CBG 0 CB 4 are decoded correctly, then the result of decoding and checking CBG 0 corresponds to ACK. If CB 5 and CB 6 in CBG 1 are decoded incorrectly, the decoding check result corresponding to CBG 1 is NAK.
  • HARQ Hybrid Automatic Repeat reQuest
  • the result of decoding and checking CBG 2 corresponds to ACK. If the CB 12 in CBG 3 is decoded incorrectly, the decoding check result corresponding to CBG 3 is NAK. If "0" is used to indicate NAK and "1" is used to indicate ACK, the HARQ feedback codebook corresponding to the initial transmission is "1010".
  • the base station After receiving the initial HARQ feedback codebook, the base station performs the first retransmission, that is, the CBG corresponding to the NAK in the received decoding verification result is retransmitted to the UE.
  • the base station After receiving the corresponding HARQ feedback codebook for the first retransmission, the base station performs the second retransmission and the subsequent retransmission, wherein the second retransmission and the subsequent retransmission process can refer to the first retransmission. The process is not repeated here.
  • the base station may stop retransmission after the UE decodes the 14 CBs correctly. Alternatively, the base station may stop retransmission when the number of retransmissions reaches a preset maximum number of retransmissions.
  • the base station needs to retransmit all the CBs included in the CBG.
  • the HARQ feedback codebook corresponding to the data sent during the retransmission process for the CBG that has previously fed back the ACK, feedback is still needed in the subsequent retransmission feedback.
  • the first The HARQ feedback codebook corresponding to the secondary retransmission includes CBG 0 and CBG 2 that have been previously fed back as ACK, so that the HARQ feedback codebook has information redundancy.
  • the present application provides a data transmission method and apparatus for solving the CBG-based retransmission technology, and the problem of low retransmission efficiency is low.
  • the method and the device are based on the same inventive concept. Since the principles of the method and the device for solving the problem are similar, the implementation of the device and the method can be referred to each other, and the repeated description is not repeated.
  • the plurality referred to in the present application means two or more.
  • a flow chart of a data transmission method provided by the present application is provided.
  • the method may be applied to a retransmission process after the first end of the transmission of the original data by the transmitting end, the transmitting end may be a base station, and the receiving end may be a terminal, wherein the transmitting end may perform CBG data transmission through high layer signaling configuration.
  • the number of configured CBGs is N, and N is an integer greater than 0.
  • the method includes:
  • the sending end sends the first retransmission data to the receiving end.
  • the first retransmission data includes a first CBG corresponding to a decoding verification result of a NAK in the N decoding verification results received by the transmitting end, and the N decoding verification results are
  • Each of the first CBGs includes at least one CB, which is reported by the receiving end for the retransmission data sent by the sending end.
  • the receiving end receives the first retransmission data that is sent by the sending end, and decodes the CB included in the first retransmitted data that is received this time.
  • the receiving end may only decode the undecoded CB in the retransmitted data, and may also decode each CB included in the retransmitted data.
  • the receiving end sends a HARQ feedback codebook to the transmitting end, where the HARQ feedback codebook is a decoding verification result corresponding to each of the N second CBGs.
  • the receiving end may determine N second CBGs based on the first retransmission data, and the CBs included in any two second CBGs do not overlap each other.
  • the decoding verification result corresponding to the at least one CB in the second CBG is an error
  • the decoding verification result corresponding to the second CBG is NAK, otherwise the decoding verification result corresponding to the second CBG is ACK.
  • the receiving end may determine N second CBGs by:
  • the receiving end determines that the h second CBGs in the N second CBGs include a CB, and the second CBGs other than the h second CBGs in the N second CBGs respectively include b CBs.
  • h can satisfy the following formula:
  • the receiving end may determine that the first h second CBGs in the N second CBGs include a CB, and the second CBGs other than the h second CBGs in the N second CBGs respectively include b CBs. Therefore, the receiving end can start from the first CB of the retransmitted data, and each consecutive c CB is regarded as a second CBG until the number of the second CBG reaches h, and thereafter, each consecutive b CBs is regarded as a second CBG. The number of CBs included in any two of the second CBGs does not coincide with each other.
  • the receiving end may also determine that the last h second CBGs of the N second CBGs include a CB, and the second CBGs other than the h second CBGs of the N second CBGs respectively include b CB. Therefore, the receiving end can start from the first CB of the retransmitted data, and each consecutive c CB is regarded as a second CBG until the number of the second CBG reaches Nh, and thereafter, each successive b CBs is regarded as a second CBG. The number of CBs included in any two of the second CBGs does not coincide with each other.
  • the receiving end may also determine that any h second CBGs in the N second CBGs include a CB, and the second CBGs other than the h second CBGs in the N second CBGs respectively include b CB, the embodiment of the present application does not specifically limit h second CBGs herein.
  • the transmitting end divides the first retransmission data into N second CBGs.
  • the method for dividing the first retransmission data into N second CBGs by the transmitting end is the same as the method for determining, by the receiving end, the N second CBGs based on the first retransmission data.
  • the transmitting end retransmits the second retransmission data to the receiving end, where the second retransmission data includes a decoding verification result corresponding to the NAK in the N decoding verification results received by the transmitting end.
  • the second CBG When receiving the decoding verification result corresponding to the N second CBGs, the transmitting end may correctly receive the N decoding verification results sent by the receiving end, and may also incorrectly receive a decoding verification result, such as ACK is detected as NAK, or NAK is detected as ACK.
  • the transmitting end sends retransmission data according to the decoding verification result received by itself when performing retransmission.
  • N CBG is configured by the transmitting end through higher layer signaling
  • the transmitting end transmits data in a CBG manner through high-level signaling configuration, and the number of configured CBGs is 4, that is, N CBG is equal to 4.
  • the transmitting end divides 14 CBs into four CBGs (0) according to a preset rule, and performs initial transmission of the four CBGs (0) to the receiving end.
  • the preset rule may be to divide P CBs into N CBG CBGs, where the former mod (P, N CBG ) CBGs are included.
  • CB the remaining 2 CBG (0) are included CB. So 4 CBG (0) , as shown in Figure 9, are
  • the receiving end After receiving the four CBGs (0) initially transmitted by the transmitting end, the receiving end decodes the CBs included in the four CBGs (0) to determine CB 5 , CB 6 and CB 12 decoding errors.
  • the receiving end sends a first HARQ feedback codebook to the transmitting end, where the first HARQ feedback codebook is a decoding verification result corresponding to each of the four CBGs (0) .
  • the four CBs in the decoding are correct, then The corresponding decoding check result is ACK.
  • CB 5 , CB 6 decoding error then The corresponding decoding check result is NAK.
  • the four CBs in the decoding are correct, then The corresponding decoding check result is ACK.
  • the corresponding decoding check result is NAK.
  • NAK is indicated by “0”
  • ACK indicates ACK as an example. Therefore, the first HARQ feedback codebook is "1010".
  • the transmitting end After receiving the first HARQ feedback codebook sent by the receiving end, the transmitting end performs the first retransmission according to the received first HARQ feedback codebook, that is, retransmits the received first HARQ feedback code to the receiving end.
  • the CBG (0) corresponding to this NAK.
  • the receiving end retransmits the receiving end. After, right The CB included in the decoding is decoded to determine CB 5 and CB 12 decoding errors.
  • the receiving end sends a second HARQ feedback codebook to the transmitting end, where the second HARQ feedback codebook is a decoding verification result corresponding to each of the four CBGs (1) .
  • 4 CBGs (1) are for the receiving end.
  • the seven CBs included in the above are divided based on the preset rule described in step S801.
  • CB 5 decoding error then The corresponding decoding check result is NAK.
  • the two CBs in the decoding are correct, then The corresponding decoding check result is ACK.
  • the corresponding decoding check result is NAK. If the CB decoding is correct, then The corresponding decoding check result is ACK. Therefore, the second HARQ feedback codebook is "0101".
  • the sending end After receiving the second HARQ feedback codebook, the sending end The seven CBs included in the process are divided into four CBGs (1) based on the preset rule described in step S801, that is,
  • the transmitting end performs the second retransmission according to the received second HARQ feedback codebook, that is, retransmits the CBG (1) corresponding to the NAK in the received second HARQ feedback codebook.
  • the second HARQ feedback codebook received by the transmitting end as “0101” as an example, when the transmitting end performs the second retransmission, it will Retransmit to the receiving end.
  • the transmitting end sends during the retransmission process.
  • the receiving end retransmits the receiving end. After, right The CB included in the decoding is decoded, and it is determined that all decoding is correct.
  • the receiving end sends a third HARQ feedback codebook to the transmitting end, where the third HARQ feedback codebook is a decoding verification result corresponding to each of the four CBGs (2) .
  • the third HARQ feedback codebook is a decoding verification result corresponding to each of the four CBGs (2) .
  • 4 CBGs (2) are for the receiving end.
  • the four CBs included in the above are divided based on the preset rule described in step S801.
  • Each of the four CBGs (2) includes one CB, as shown in Figure 11, respectively. Since the CBs included in the four CBGs (2) are all decoded correctly, the decoding verification results corresponding to the four CBGs (2) are all ACKs. Therefore, the third HARQ feedback codebook is "1111".
  • the transmitting end receives the third HARQ feedback codebook, and the received third HARQ feedback codebook is “1111”, and ends the data transmission.
  • the transmitting end may detect that the decoding result of the HARQ feedback codebook sent by the receiving end is an ACK error as a NAK, so that the CBG corresponding to the decoding check result of the ACK is re-transmitted by the CBG. transmission. For example, in step S804, if the transmitting end detects the first HARQ feedback codebook "1010" as "1000", the transmitting end will Retransmit to the receiving end, where The CB in the middle is decoded correctly, but it is still transmitted during retransmission.
  • the transmitting end may correct the decoding verification result before the HARQ feedback codebook sent by the receiving end in the subsequent retransmission process, that is, if the transmitting end sends the first HARQ feedback codebook "1010" is detected as "1000", which will Retransmitting to the receiving end, receiving the HARQ feedback codebook that can be used for subsequent retransmission feedback, and feeding back CB 8 , CB 9 , and CB 10 as ACKs, so that the transmitting end can determine CB 8 according to the HARQ feedback codebook of the subsequent retransmission feedback.
  • the decoding verification result corresponding to CB 9 and CB 10 is that the decoding is correct.
  • a flow chart of another data transmission method provided by the present application is provided.
  • the method may be applied to a retransmission process after the first end of the transmission of the original data by the transmitting end, the transmitting end may be a base station, and the receiving end may be a terminal, wherein the transmitting end may perform CBG data transmission through high layer signaling configuration.
  • the number of configured CBGs is G, so the original data includes G first CBGs, wherein each first CBG includes at least one CB, and the G is an integer greater than zero.
  • the method includes:
  • Step S1201 The sending end sends retransmission data to the receiving end.
  • the retransmitted data is data that the sender retransmits for the original data.
  • Step S1202 is performed.
  • the receiving end After receiving the retransmission data sent by the transmitting end, the receiving end decodes the CB included in the retransmitted data received by the receiving end, and updates the stored original data according to the obtained decoding verification result.
  • the decoding verification result corresponding to each CB included for example, the decoding verification result corresponding to the CB obtained in step S1202, and the stored decoding verification result corresponding to the CB is updated to a certain CB corresponding to step S1202.
  • the receiving end may only decode the undecoded CB in the retransmitted data, or may decode each CB included in the retransmitted data.
  • the retransmission data includes a preset flag bit, and the preset flag bit is the first flag or the second flag. If the preset flag is the first flag, after step S1202 is performed, step S1203 is performed; if the preset flag is the second flag or is empty, step S1205 is performed after step S1203 is performed.
  • the first flag may be 1 and the second flag is 0. Alternatively, the first flag may be 0, and the second flag is 1.
  • the embodiment of the present application is not specifically limited herein.
  • the receiving end sends a HARQ feedback codebook corresponding to the first flag to the transmitting end, where the HARQ feedback codebook is a decoding verification result corresponding to each of the G second CBGs.
  • the receiving end may determine G second CBGs based on the retransmitted data.
  • the decoding verification result corresponding to the at least one CB in the second CBG is an error
  • the decoding verification result corresponding to the second CBG is NAK, otherwise the decoding verification result corresponding to the second CBG is ACK.
  • Step S1204 is performed.
  • the receiver For the method for the receiver to determine the G second CBGs, refer to the method for determining, by the receiving end, the N second CBGs in step S703, and details are not repeatedly described herein.
  • the sending end divides each CB in the retransmission data into G second CBGs, and retransmits the received first flag to the receiving end.
  • the second CBG corresponding to the NAK in the HARQ feedback codebook.
  • the transmitting end may correctly receive the HARQ feedback codebook sent by the receiving end, or may incorrectly receive a decoding verification result in the HARQ feedback codebook sent by the receiving end. That is, the ACK is detected as NAK, or the NAK is detected as ACK, and the HARQ feedback codebook whose content is "1010" is detected as "1110" or the like.
  • the transmitting end sends retransmission data according to the HARQ feedback codebook received by itself.
  • the method in which the transmitting end divides the retransmission data into G second CBGs is the same as the method in which the receiving end determines the G second CBGs in step S1203.
  • Step S1205 The receiving end sends a retransmission request message carrying the HARQ feedback codebook corresponding to the second flag to the transmitting end, where the HARQ feedback codebook corresponding to the second flag is a decoding verification result corresponding to each of the G first CBGs.
  • the decoding verification result corresponding to the first CBG is ACK, otherwise the decoding verification result corresponding to the first CBG is NAK.
  • Step S1206 is performed.
  • the transmitting end When the preset flag in the retransmission data is the second flag or is empty, the transmitting end retransmits the first CBG corresponding to the NAK in the HARQ feedback codebook corresponding to the received second flag to the receiving end.
  • the transmitting end may correctly receive the HARQ feedback codebook sent by the receiving end, or may incorrectly receive a decoding verification result in the HARQ feedback codebook sent by the receiving end. That is, the ACK is detected as NAK, or the NAK is detected as ACK, and the HARQ feedback codebook whose content is "1010" is detected as "1110” or the like.
  • the transmitting end sends retransmission data according to the HARQ feedback codebook received by itself.
  • N CBG is configured by the transmitting end through higher layer signaling
  • the transmitting end transmits data in a CBG manner through high-level signaling configuration, and the number of configured CBGs is 4, that is, N CBG is equal to 4.
  • the transmitting end divides 14 CBs into four CBGs (0) according to the preset rule described in step S801, and performs initial transmission on the four CBGs (0) to the receiving end. As shown in Figure 10, the four CBGs (0) are respectively
  • the receiving end After receiving the four CBGs (0) initially transmitted by the transmitting end, the receiving end decodes the CBs included in the four CBGs (0) to determine CB 5 , CB 6 and CB 12 decoding errors, and The decoding verification results corresponding to the 14 CBs are stored, that is, the decoding verification results corresponding to CB 5 , CB 6 and CB 12 are decoding errors, and the decoding verification results corresponding to the remaining CBs are all decoded correctly.
  • the receiving end sends a first HARQ feedback codebook to the transmitting end, where the first HARQ feedback codebook is a decoding verification result corresponding to each of the four CBGs (0) .
  • NAK is indicated by "0”
  • “1” indicates ACK as an example. Therefore, the first HARQ feedback codebook is "1010".
  • the transmitting end After receiving the first HARQ feedback codebook sent by the receiving end, the transmitting end performs the first retransmission according to the received first HARQ feedback codebook, that is, the first HARQ feedback codebook received from the receiving end. CBG (0) corresponding to NAK. Taking the first HARQ feedback codebook received by the sender as "1010" as an example, when the sender repeats the first retransmission, Retransmit to the receiving end and will include The preset flag bit in the retransmission data is set to the first flag.
  • the receiving end retransmits on the receiving end After, right
  • the CB included in the decoding performs decoding, determines the CB 5 and CB 12 decoding errors, and updates the stored 14 CB decoding check results according to the decoding check result obtained in step S1305, so the updated 14 CBs
  • the corresponding decoding verification results are as follows: the decoding verification results corresponding to CB 5 and CB 12 are decoding errors, and the decoding verification results corresponding to the remaining CBs are all decoded correctly.
  • the receiving end when the receiving end determines that the preset flag bit is the first flag in the received retransmission data, the receiving end sends the second HARQ feedback codebook to the transmitting end, where the second HARQ feedback codebook includes four CBGs (1) respectively. Decode the verification result. Among them, 4 CBGs (1) are for the receiving end. The seven CBs included in the above are divided based on the preset rule described in step S801. As shown in Figure 10, the four CBGs (1) are respectively The second HARQ feedback codebook is "0101".
  • the sender after receiving the second HARQ feedback codebook, the sender will The seven CBs included in the process are divided into four CBGs (1) based on the preset rule described in step S801, that is,
  • the transmitting end performs the second retransmission according to the received second HARQ feedback codebook, that is, retransmits the CBG (1) corresponding to the NAK in the received second HARQ feedback codebook.
  • the second HARQ feedback codebook received by the transmitting end as “0101” as an example, when the transmitting end performs the second retransmission, it will Retransmit to the receiving end and will include The preset flag bit in the retransmission data is set to the second flag.
  • the receiving end retransmits the receiving end.
  • the CB included in the decoding is decoded to determine the CB 5 decoding error, and the decoding verification result corresponding to the updated 14 CBs is updated according to the decoding verification result obtained in step S1309, and the updated 14 CBs respectively correspond to
  • the decoding verification result is that the decoding verification result corresponding to CB 5 is a decoding error, and the decoding verification results corresponding to the remaining CBs are all decoded correctly.
  • the receiving end sends a third HARQ feedback codebook to the transmitting end when determining that the preset flag bit is the second flag in the received retransmission data, where the third HARQ feedback codebook includes four CBGs (0) respectively.
  • Decode the verification result The determining, according to the decoding verification result corresponding to the 14 CBs updated in step S1309, is determined. Each CB in the decoding is correct, then The corresponding decoding check result is ACK, CB 5 decoding error, then The corresponding decoding check result is NAK. Therefore, the third HARQ feedback codebook is "1011".
  • the transmitting end receives the third HARQ feedback codebook, and performs a third retransmission according to the received third HARQ feedback codebook, and sends the third HARQ feedback codebook received by the transmitting end as “1011” as an example.
  • the receiving end retransmits the receiving end.
  • the CB included in the decoding is decoded to determine that all the decodings are correct, and the decoding verification result obtained according to step S1312 is updated corresponding to the decoding verification result corresponding to the 14 CBs stored, so the updated 14 CBs respectively
  • the corresponding decoding check result is: the decoding verification results corresponding to 14 CBs are all decoded correctly.
  • the receiving end generates a fourth HARQ feedback codebook to the transmitting end when determining that the preset flag bit is the first flag in the received retransmission data, where the fourth HARQ feedback codebook includes four CBGs (3) respectively. Decode the verification result. Among them, 4 CBGs (3) are for the receiving end The four CBs included in the process are divided based on the preset rules described in step S801, respectively The fourth HARQ feedback codebook is "1111".
  • the transmitting end receives the fourth HARQ feedback codebook, and the received fourth HARQ feedback codebook is “1111”, and ends the data transmission.
  • the transmitting end may detect a certain decoding check result in the HARQ feedback codebook sent by the receiving end as a NAK error as an ACK, so that the CBG corresponding to the decoding check result of the NAK is not used by the transmitting end when retransmitting. transmission. For example, in step S1304, if the transmitting end detects the first HARQ feedback codebook "1010" as "1110", the transmitting end will Retransmit to the receiving end, where The CB in the decoding error is not transmitted during retransmission, and the receiving end cannot correctly receive the CB of the decoding error.
  • the transmitting end may correct the decoding verification result before the HARQ feedback codebook sent by the receiving end in the subsequent retransmission process, that is, if the transmitting end is due to the first HARQ feedback codebook. 1010" is detected as "1110", so only Retransmit to the receiving end, but not Retransmit.
  • the receiving end can preset the flag bit to the second flag in the retransmission data
  • the corresponding decoding check result is re-evaluated in the second HARQ feedback codebook, so that the transmitting end can determine according to the second HARQ feedback codebook.
  • There is a CB with a decoding error which can be used in the next retransmission. Retransmitting to the receiving end, so that the receiving end can receive and decode again
  • the present application further provides a terminal device, as shown in FIG. 14 , including: a receiving unit 1401 , a decoding unit 1402 , and a sending unit 1403 .
  • the receiving unit 1401 is configured to perform the receiving data process of step S702 or step S1202
  • the decoding unit 1402 is configured to perform the decoding process of step S702 or step S1202
  • the sending unit 1403 is configured to perform step S703, or step S1203, or step S1205.
  • the terminal device may further include an update unit 1404, which is used to perform the update process in step S1202, where it is repeated, and details are not described herein again.
  • the present application further provides a network device, as shown in FIG. 15 , including: a sending unit 1501 , a receiving unit 1502 , and a dividing unit 1503 .
  • the sending unit 1501 is configured to perform the retransmission process of step S701, or step S705, or step S1201, or step 1204, or the retransmission process of step S1206, and the receiving unit 1502 is configured to perform the receiving process of the sending end corresponding to step S703 or In the receiving process of the sending end corresponding to the step S1202, the dividing unit 1503 is configured to perform the dividing process of step S704 or step S1204, where the repetition is repeated, and details are not described herein again.
  • each functional module in each embodiment of the present application may be integrated into one processing. In the device, it can also be physically existed alone, or two or more modules can be integrated into one module.
  • the above integrated modules can be implemented in the form of hardware or in the form of software functional modules.
  • the integrated module can be implemented in the form of hardware. As shown in FIG. 16 , the embodiment of the present application further provides a device, which may be applied to a terminal device or a network device, and the device may include processing. 1602.
  • the hardware of the entity corresponding to the above module may be the processor 1602.
  • the processor 1602 can be a central processing unit (English: central processing unit, CPU for short), or a digital processing module or the like.
  • the apparatus can also include a transceiver 1601 that receives data through the transceiver 1601.
  • the apparatus also includes a memory 1603 for storing a program executed by the processor 1602.
  • the memory 1603 may be a non-volatile memory, such as a hard disk drive (HDD) or a solid state drive (SSD), or a volatile memory (English: volatile) Memory), such as random access memory (English: random-access memory, abbreviation: RAM).
  • Memory 1603 is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited thereto.
  • the processor 1602 is configured to execute the program code stored in the memory 1603, specifically for performing the method described in the embodiment shown in FIG. 7 or FIG. For the method described in the embodiment shown in FIG. 7 or FIG. 13 , the application is not described herein again.
  • connection medium between the above transceiver 1601, the processor 1602, and the memory 1603 is not limited in the embodiment of the present application.
  • the memory 1603, the processor 1602, and the transceiver 1601 are connected by a bus 1604 in FIG. 16.
  • the bus is shown by a thick line in FIG. 16, and the connection manner between other components is only schematically illustrated. , not limited to.
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 16, but it does not mean that there is only one bus or one type of bus.
  • the embodiment of the invention further provides a computer program product for storing computer software instructions required to execute the above-mentioned processor, which comprises a program for executing the above-mentioned processor.
  • Embodiments of the present application provide a computer program product comprising instructions that, when run on a computer, cause the computer to perform the methods described above with respect to Figures 7-13.
  • embodiments of the present application can be provided as a method, system, or computer program product.
  • the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware.
  • the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

L'invention concerne un procédé et un dispositif de transmission de données à utiliser dans la résolution du problème de faible efficacité de retransmission d'une technique de retransmission fondée sur des CBG. Le procédé comprend : la réception par une extrémité de réception de données retransmises transmises par une extrémité de transmission, les données retransmises comprenant au moins un premier groupe de blocs de code, et chacun des premiers groupes de blocs de code comprenant au moins un bloc de code. L'extrémité de réception décode le bloc de code compris dans les données retransmises. L'extrémité de réception transmet des résultats de vérification de décodage correspondant respectivement à N seconds groupes de blocs de code, les N seconds groupes de blocs de code étant déterminés par l'extrémité de réception en fonction des données retransmises et, lorsque le résultat de vérification de décodage d'au moins un bloc de code dans l'un des seconds groupes de blocs de code constitue une erreur, le résultat de vérification de codage correspondant au second groupe de blocs de code est NAK, ou alors le résultat de vérification de décodage correspondant au second groupe de blocs de code est ACK.
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