CN110417519B - Data transmission method and device - Google Patents

Data transmission method and device Download PDF

Info

Publication number
CN110417519B
CN110417519B CN201810402561.2A CN201810402561A CN110417519B CN 110417519 B CN110417519 B CN 110417519B CN 201810402561 A CN201810402561 A CN 201810402561A CN 110417519 B CN110417519 B CN 110417519B
Authority
CN
China
Prior art keywords
coding block
decoding check
retransmission data
decoding
receiving end
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201810402561.2A
Other languages
Chinese (zh)
Other versions
CN110417519A (en
Inventor
王俊伟
武雨春
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN201810402561.2A priority Critical patent/CN110417519B/en
Priority to PCT/CN2019/084149 priority patent/WO2019206197A1/en
Publication of CN110417519A publication Critical patent/CN110417519A/en
Application granted granted Critical
Publication of CN110417519B publication Critical patent/CN110417519B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • 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

Abstract

A data transmission method and device are used for solving the problem of low retransmission efficiency of a CBG-based retransmission technology. The method comprises the following steps: a receiving end receives retransmission data sent by a sending end, wherein the retransmission data comprises at least one first coding block group, and each first coding block group comprises at least one coding block. And the receiving end decodes the coding block included in the retransmission data. The receiving end sends decoding check results corresponding to the N second coding block groups to the sending end, where the N second coding block groups are determined by the receiving end based on the retransmission data, and when a decoding check result corresponding to at least one coding block in one second coding block group is an error, the decoding check result corresponding to the second coding block group is NAK, otherwise, the decoding check result corresponding to the second coding block group is ACK.

Description

Data transmission method and device
Technical Field
The present application relates to the field of communications technologies, and in particular, to a data transmission method and apparatus.
Background
Next radio technology (NR) communication systems introduce Code Block Group (CBG) based ACK/NAK feedback techniques based on Transport Block (TB) ACK/NAK feedback techniques in Long Term Evolution (LTE), where ACK indicates that the transmitted data has been accepted without error and NAK indicates that the data has been received but the data has been in error.
The ACK/NAK feedback technique based on CBG is that, when a transmitting end transmits a TB, the TB is subjected to Cyclic Redundancy Check (CRC) addition and the CRC-checked TB is divided into a plurality of Code Blocks (CBs). And then CRC addition is carried out on each CB, and the plurality of CBs subjected to CRC addition are divided into a plurality of Code Block Groups (CBGs) for scheduling and transmission, wherein each CBG comprises at least one CB subjected to CRC. And the receiving end feeds back ACK/NAK information based on the CBG, wherein if a CBG has a CB with an error check, NAK information is fed back aiming at the CBG, and if all the CBGs in the CBG are successfully checked, ACK information is fed back aiming at the CBG. And the sending end retransmits the CBG fed back as NAK information according to the received HARQ information.
At present, the retransmission technology based on CBG has low retransmission efficiency.
Disclosure of Invention
The application provides a data transmission method and device, which are used for solving the problem of low retransmission efficiency of a CBG-based retransmission technology.
In a first aspect, the present application provides a data transmission method, where the method includes: the method comprises the steps that a receiving end receives first retransmission data sent by a sending end at this time, and decodes CBs included in the first retransmission data received at this time, the first retransmission data include first CBGs respectively corresponding to NAK decoding check results in N decoding check results received by the sending end at the last time, the N decoding check results are fed back by the receiving end aiming at the retransmission data sent by the sending end at the last time, each first CBG includes at least one CB, and N is an integer larger than 0. The receiving end sends decoding check results corresponding to the N second CBGs to the sending end, the N second CBGs are determined by the receiving end based on CBs included in the first retransmission data received this time, the CBs included in any two second CBGs are not overlapped with each other, when the decoding check result corresponding to at least one CB in one second CBG is wrong, the decoding check result corresponding to the second CBG is NAK, otherwise, the decoding check result corresponding to the second CBG is ACK. And the receiving end receives second retransmission data retransmitted by the transmitting end, wherein the second retransmission data comprise second CBGs respectively corresponding to NAK decoding check results in the N decoding check results received by the transmitting end this time. In this embodiment of the application, the receiving end re-determines N second CBGs based on the received first retransmission data and feeds back decoding check results corresponding to the N re-determined second CBGs, where the N second CBGs are determined based on the first retransmission data, and the first retransmission data is the first CBGs corresponding to NAKs in the N decoding check results received last time by the sending end, and it is seen that the number of the first CBGs included in the first retransmission data is not greater than N. When the number of the first CBGs included in the first retransmission data is smaller 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 sending end can obtain decoding check results corresponding to the N second CBGs when retransmitting, and thus the sending end can send CBs according to the second CBGs. Taking the example that 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 identified as 4-6, the receiving end repartitions each of the CBs included in CBG1 and CBG2 into CBG '1, CBG' 2, CBG '3, and CBG' 4, where CBG '1 includes CBs identified as 0 and 1, CBG' 2 includes CBs identified as 2 and 3, CBG '3 includes CBs identified as 4 and 5, and CBG' 4 includes CB identified as 6, if the CB identified as 2 is decoded incorrectly, the decoding check result corresponding to CBG '2 in the HARQ transmitted to the transmitting end is NAK, so that the transmitting end transmits CBG' 2 at the time of retransmission, and the decoding check result corresponding to CBG1 in the HARQ transmitted to the transmitting end in the prior art is NAK, so that the transmitting end needs to transmit CBG1, that there are 4 retransmissions, in the embodiment of the application, the sending end only needs to send 2 CBs, so that the data volume sent during retransmission can be reduced.
In one possible design, h second CBGs of the N second CBGs include a CBs, respectively, and the other second CBGs of the N second CBGs except the h second CBGs include b CBs, respectively. Wherein h satisfies the following formula:
h＝mod(P，N)。
and the P is the number of all CBs contained in the first retransmission data received this time. The a satisfies the following formula:
Figure BDA0001646080110000021
the b satisfies the following formula:
Figure BDA0001646080110000022
when the receiving end re-determines the N second CBGs based on the first retransmission data based on the method described in the above design, the numbers of CBs included in the respective second CBGs may be made as uniform as possible, that is, the number of CBs included in any two second CBGs differs by 1 at most. Because 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 can be reduced compared with the number of CBs included in any first CBG by the above method, so that the sending end sends CBs according to the second CBGs during retransmission, and the retransmission efficiency of data can be improved well.
In a possible design, the first retransmission data carries a preset flag, where the preset flag is used to instruct the receiving end to feed back decoding verification results corresponding to the N second CBGs, respectively. In the above design, the receiving end may feed back the decoding verification results corresponding to the N second CBGs to the sending end under the instruction of the sending end, so that the retransmission rules adopted by the receiving end and the sending end may be unified.
In a second aspect, the present application provides a data transmission method, including: the method comprises the steps that a sending end sends first retransmission data to a receiving end, the first retransmission data comprise first CBGs corresponding to NAK decoding check results respectively in N decoding check results received last time by the sending end, the N decoding check results are fed back by the receiving end aiming at the retransmission data sent last time by the sending end, each first CBG comprises at least one CB, and N is an integer larger than 0. The sending end receives decoding check results corresponding to the N second CBGs sent by the receiving end, the N second CBGs are determined by the receiving end based on decoding of CBs included in the first retransmission data received this time and CBs included in the first retransmission data received this time, the CBs included in any two second CBGs are not overlapped, when the decoding check result corresponding to at least one CB in one second CBG is wrong, the decoding check result corresponding to the second CBG is NAK, otherwise, the decoding check result corresponding to the second CBG is ACK. The transmitting end divides the first retransmission data into the N second CBGs. And the transmitting end retransmits second retransmission data to the receiving end, wherein the second retransmission data comprises second CBGs respectively corresponding to the NAK decoding check results in the N decoding check results received by the transmitting end this time. In this embodiment of the application, the sending end divides the first retransmission data into N second CBGs, and feeds back the decoding check results corresponding to the N determined second CBGs, where the N second CBGs are determined based on the first retransmission data, and the first retransmission data is the first CBGs corresponding to the NAKs in the N decoding check results received last time by the sending end, and it is seen that the number of the first CBGs included in the first retransmission data is not greater than N. When the number of first CBGs included in the first retransmission data is less than N, the number of CBs included in the second CBG is less than the number of CBs included in the first CBG. And the sending end sends the CBs according to the second CBG during retransmission, and the number of the CBs in the second CBG is reduced compared with the number of the CBs in the first CBG, so that the retransmission efficiency of the data can be better improved.
In one possible design, h second CBGs of the N second CBGs include a CBs, respectively, and the other second CBGs of the N second CBGs except the h second CBGs include b CBs, respectively. Wherein h satisfies the following formula:
h＝mod(P，N)；
the P is the number of all CBs included in the first retransmission data. The a satisfies the following formula:
Figure BDA0001646080110000031
the b satisfies the following formula:
Figure BDA0001646080110000032
when the sending end determines N second CBGs from the first retransmission data based on the method described in the above design, the numbers of CBs included in the second CBGs may be as uniform as possible, that is, the number of CBs included in any two second CBGs differs by 1 at most. Because 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 can be reduced compared with the number of CBs included in any first CBG by the above method, so that the sending end sends CBs according to the second CBGs during retransmission, and the retransmission efficiency of data can be improved well.
In a possible design, the first retransmission data carries a preset flag, where the preset flag is used to instruct the receiving end to feed back decoding verification results corresponding to the N second CBGs, respectively. In the above design, the sending end may instruct the receiving end to feed back the decoding verification results corresponding to the N second CBGs by carrying the preset flag in the retransmission data, so that the retransmission rules adopted by the receiving end and the sending end may be unified.
In a third aspect, the present application provides a data transmission method, including: a receiving end receives first retransmission data sent by a sending end, wherein the first retransmission data is data retransmitted by the sending end aiming at original data initially sent to the receiving end, the original data comprises G CBGs, each CBG comprises at least one CB, and G is an integer greater than 0. And the receiving end decodes the CBs included in the first retransmission data, and correspondingly updates the decoding check results respectively corresponding to the CBs included in the stored original data according to the decoding check results respectively corresponding to the CBs included in the first retransmission data. And when the receiving end carries a preset mark in the first retransmission data, sending decoding verification results corresponding to the G CBGs to the sending end, wherein when a decoding verification result corresponding to at least one CB in one CBG is an error, the decoding verification result corresponding to the CBG is a NAK, otherwise, the decoding verification result corresponding to the CBG is an ACK, and the preset mark is used for indicating the receiving end to feed back the decoding verification results corresponding to the G CBGs to the sending end. And the receiving end receives second retransmission data sent by the sending end, wherein the second retransmission data is CBG corresponding to the NAK decoding check result in the G decoding check results received by the sending end. The sending end may erroneously detect a certain decoding check result in the HARQ feedback codebook sent by the receiving end as NAK as ACK, so that the CBG corresponding to the decoding check result as NAK is not transmitted during retransmission by the sending end. For example, the transmitting end detects "1010" as "1110", so there is a CB with decoding error in the second CBG, but the transmitting end does not transmit the CBG at the time of retransmission. In the embodiment of the application, when the first retransmission data carries the preset flag, the receiving end feeds back the decoding check results corresponding to the G first CBGs initially transmitted to the transmitting end, and in this way, the receiving end can feed back the decoding check results corresponding to the G first CBGs initially transmitted in the subsequent retransmission feedback, so that the transmitting end can correct the decoding check result of the previous detection error after receiving the decoding check result corresponding to the G first CBGs fed back again by the receiving end, and thus the CB of the previous missed decoding error can be sent to the receiving end again. For example, the sending end detects "1010" as "1110", so that the sending end does not send the CB with the decoding error included in the second CBG during retransmission, and in the subsequent retransmission process, the receiving end re-feeds back the decoding check result of the original data under the instruction of the sending end, so that the sending end determines that the CB with the decoding error exists in the second CBG according to the decoding check result of the original data re-fed back by the receiving end, and sends the CB with the decoding error to the receiving end in the next retransmission.
In a fourth aspect, the present application provides a data transmission method, including: the method comprises the steps that a sending end sends first data to a receiving end, the first retransmitted data carries a preset mark, the preset mark is used for indicating the receiving end to feed back decoding check results corresponding to G CBGs to the sending end, the first data is data retransmitted by the sending end aiming at original data which are initially sent to the receiving end, the original data comprises the G CBGs, each CBG comprises at least one CB, and the G is an integer larger than 0. When the first data carries a preset flag, the sending end receives decoding check results corresponding to the G CBGs sent by the receiving end, where the decoding check results corresponding to the G CBGs are obtained after the receiving end decodes the CBs included in the first retransmission data, and correspondingly updates the decoding check results corresponding to the CBs included in the stored original data according to the decoding check results corresponding to the CBs included in the first retransmission data. And when the decoding check result corresponding to at least one CB in one CBG is wrong, the decoding check result corresponding to the CBG is NAK, otherwise, the decoding check result corresponding to the CBG is ACK. And the sending end sends second data to the receiving end, wherein the second retransmission data is CBG corresponding to the NAK decoding check result in the decoding check result received by the sending end. The method aims at the problem that a certain decoding check result in an HARQ feedback codebook sent by a receiving end may be mistakenly detected as NAK into ACK by a sending end, so that CBG corresponding to the NAK decoding check result is not transmitted during retransmission by the sending end. In the embodiment of the application, the sending end instructs the receiving end to feed back the decoding check results corresponding to the first G CBGs which are initially transmitted again in the subsequent retransmission process, and in this way, the sending end can correct the decoding check result which is detected to be wrong before after receiving the decoding check result corresponding to the first G CBGs which are fed back again by the receiving end, so that the CB which are missed before and have decoding errors can be sent to the receiving end again.
In a fifth aspect, the present application provides a receiving apparatus, comprising: a receiving unit, configured to receive first retransmission data sent by a sending end this time, where the first retransmission data includes first CBGs respectively corresponding to decoding check results that are NAK in N decoding check results received by the sending end last time, the N decoding check results are fed back by the receiving end for the retransmission data sent by the sending end last time, each of the first CBGs includes at least one CB, and N is an integer greater than 0. And the decoding unit is used for decoding the CB included in the first retransmission data received by the receiving unit this time. A sending unit, configured to send, to the sending end, decoding check results corresponding to N second CBGs, where the N second CBGs are determined by the terminal device based on CBs included in the first retransmission data received this time, and CBs included in any two second CBGs do not overlap with each other, when a decoding check result corresponding to at least one CB in one second CBG is an error, the decoding check result corresponding to the second CBG is a NAK, and otherwise, the decoding check result corresponding to the second CBG is an ACK. The receiving unit is further configured to receive second retransmission data from the sending end, where the second retransmission data includes second CBGs corresponding to the NAK decoding check results among the N NAK decoding check results received by the sending end this time.
In one possible design, h second CBGs of the N second CBGs include a CBs, respectively, and the other second CBGs of the N second CBGs except the h second CBGs include b CBs, respectively. Wherein h satisfies the following formula:
h＝mod(P，N)；
the P is the number of all CBs included in the first retransmission data received this time; the a satisfies the following formula:
Figure BDA0001646080110000051
the b satisfies the following formula:
Figure BDA0001646080110000052
in a possible design, the first retransmission data carries a preset flag, where the preset flag is used to instruct the terminal device to feed back decoding verification results corresponding to the N second CBGs, respectively.
In a sixth aspect, the present application provides a transmitting apparatus, comprising: a sending unit, configured to send first retransmission data to a receiving end, where the first retransmission data includes first CBGs corresponding to decoding check results that are NAK in N decoding check results received by the sending end last time, the N decoding check results are fed back by the receiving end for the retransmission data sent by the sending end last time, each of the first CBGs includes at least one CB, and N is an integer greater than 0. A receiving unit, configured to receive decoding check results corresponding to N second CBGs from the receiving end, where the N second CBGs are determined by the receiving end based on decoding of CBs included in the first retransmission data received this time and CBs included in the first retransmission data received this time, the CBs included in any two second CBGs do not overlap with each other, when a decoding check result corresponding to at least one CB in one second CBG is an error, the decoding check result corresponding to the second CBG is a NAK, and otherwise, the decoding check result corresponding to the second CBG is an ACK. A dividing unit, configured to divide the first retransmission data into the N second CBGs. The sending unit is further configured to retransmit second retransmission data to the receiving end, where the second retransmission data includes second CBGs corresponding to the decoding check results that are NAK in the N decoding check results received by the sending end this time.
In one possible design, h second CBGs of the N second CBGs include a CBs, respectively, and the other second CBGs of the N second CBGs except the h second CBGs include b CBs, respectively. Wherein h satisfies the following formula:
h＝mod(P，N)。
and the P is the number of all CBs included in the first retransmission data. The a satisfies the following formula:
Figure BDA0001646080110000061
the b satisfies the following formula:
Figure BDA0001646080110000062
in a possible design, the first retransmission data carries a preset flag, where the preset flag is used to instruct the receiving end to feed back decoding verification results corresponding to the N second CBGs, respectively.
In a seventh aspect, the present application provides a receiving apparatus, including: a receiving unit, configured to receive first retransmission data from a sending end, where the first retransmission data is data that is retransmitted by the sending end for original data that is initially sent to the terminal device, the original data includes G CBGs, each CBG includes at least one CB, and G is an integer greater than 0. A decoding unit, configured to decode the CB included in the first retransmission data received by the receiving unit. And the updating unit is used for correspondingly updating the stored decoding check results respectively corresponding to the CBs included in the original data according to the decoding check results respectively corresponding to the CBs included in the first retransmission data. A sending unit, configured to send, to the sending end, decoding check results corresponding to the G CBGs when the first retransmission data carries a preset flag, where when a decoding check result corresponding to at least one CB in one CBG is an error, the decoding check result corresponding to the CBG is a NAK, and otherwise, the decoding check result corresponding to the CBG is an ACK. And the preset mark is used for indicating the terminal equipment to feed back the decoding verification results respectively corresponding to the G CBGs to the sending end. The receiving unit is further configured to receive second retransmission data sent by the sending end, where the second retransmission data is a CBG corresponding to a NAK decoding check result from among G decoding check results received by the sending end.
In an eighth aspect, the present application provides a transmitting apparatus, comprising: a sending unit, configured to send first retransmission data to a receiving end, where the first data is data that is retransmitted by the network device for original data that is initially sent to the receiving end, the original data includes G CBGs, each CBG includes at least one CB, and G is an integer greater than 0. A receiving unit, configured to receive, when the first retransmission data carries a preset flag, decoding verification results corresponding to the G CBGs from the receiving end, where when a decoding verification result corresponding to at least one CB in one CBG is an error, the decoding verification result corresponding to the CBG is a NAK, and otherwise, the decoding verification result corresponding to the CBG is an ACK. The sending unit is further configured to send second retransmission data to the receiving end, where the second retransmission data are CBGs corresponding to the NAKs in the received decoding check result, respectively. The preset mark is used for indicating the receiving end to feed back the decoding verification results respectively corresponding to the G CBGs to the network equipment.
In a ninth aspect, the present application provides a terminal device, which includes a transceiver, a memory and a processor, wherein the memory is used for storing program codes required to be executed by the processor. The transceiver is used for transceiving data. The processor is adapted to execute the program code stored in the memory, in particular to execute the method as designed by the first aspect or any one of the designs of the first aspect, the third aspect or any one of the designs of the third aspect.
In a tenth aspect, the present application provides a network device, which includes a transceiver, a memory and a processor, wherein the memory is used for storing program codes required to be executed by the processor. The transceiver is used for transceiving data. The processor is adapted to execute the program code stored in the memory, in particular to execute the method as designed by the second aspect or any one of the designs of the second aspect, the fourth aspect or any one of the designs of the fourth aspect.
In an eleventh aspect, the present application further provides a computer readable storage medium for storing computer software instructions for performing the functions of any one of the designs of the first aspect or the first aspect, any one of the designs of the second aspect or the second aspect, any one of the designs of the third aspect or the third aspect, any one of the designs of the fourth aspect or the fourth aspect, and containing a program designed by a method for performing any one of the designs of the first aspect or the first aspect, any one of the designs of the second aspect or the second aspect, any one of the designs of the third aspect or the third aspect, any one of the designs of the fourth aspect or the fourth aspect.
In a twelfth aspect, the present application provides a computer program product containing instructions that, when run on a computer, cause the computer to perform the method as set forth in any of the first aspect or the first aspect, the second aspect or any of the second aspect, the third aspect or any of the third aspect, the fourth aspect or any of the fourth aspect.
Drawings
Fig. 1 is a schematic architecture diagram of a communication system provided in the present application;
fig. 2 is a schematic diagram of a coding block configuration transmission provided in the present application;
fig. 3 is a schematic diagram of a coding block group partitioning result provided in the present application;
fig. 4 is a schematic diagram of a coding block group feedback result provided in the present application;
FIG. 5 is a diagram illustrating a decoding verification result of a coding block set provided in the present application;
fig. 6 is a schematic diagram of a coding block group feedback result provided in the present application;
fig. 7 is a schematic flowchart of a data transmission method provided in the present application;
fig. 8 is a schematic flowchart of a data transmission method provided in the present application;
fig. 9 is a schematic diagram of a coding block group partitioning result provided in the present application;
fig. 10 is a schematic diagram of a coding block grouping result provided in the present application;
fig. 11 is a schematic diagram of a coding block grouping result provided in the present application;
fig. 12 is a schematic flowchart of a data transmission method provided in the present application;
fig. 13 is a schematic flowchart of a data transmission method provided in the present application;
fig. 14 is a schematic structural diagram of a terminal device provided in the present application;
fig. 15 is a schematic structural diagram of a network device provided in the present application;
fig. 16 is a schematic structural diagram of an apparatus provided in the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clear, the present application will be further described in detail with reference to the accompanying drawings.
The data transmission method provided by the application can be applied to a communication system. As shown in fig. 1, the communication system includes a base station 101 and a terminal apparatus 102, and uplink data transmission and downlink data transmission are performed between the base station 101 and the terminal apparatus 102. The communication system according to the embodiment of the present application may be various types of communication systems, for example, may be a Long Term Evolution (LTE) system, a fifth generation (5G) communication system, or a hybrid architecture of LTE and 5G.
The base station 101 may be a common base station (e.g., a Node B or an eNB), a new radio controller (NR controller), a enode B (gNB) in a 5G system, a Centralized network element (Centralized Unit), a new radio base station, a radio remote module, a micro base station, a relay (relay), a Distributed network element (Distributed Unit), a reception point (TRP), a Transmission Point (TP), or any other radio access device, but the embodiment of the present invention is not limited thereto. The access network comprises at least one base station, wherein each base station may cover 1 or more cells.
The terminal device 102, also referred to as a User Equipment (UE), is a device that provides voice and/or data connectivity to a user, such as a handheld device with wireless connectivity, a vehicle-mounted device, and so on. Common terminals include, for example: the mobile phone includes a mobile phone, a tablet computer, a notebook computer, a palm computer, a Mobile Internet Device (MID), and a wearable device such as a smart watch, a smart bracelet, a pedometer, and the like.
A next radio technology (NR) communication system introduces a Code Block Group (CBG) based ACK/NAK feedback technique based on a Transport Block (TB) in Long Term Evolution (LTE), that is, when transmitting data to a UE, a base station performs Cyclic Redundancy Check (CRC) on the TB, then divides the CRC-checked TB into a plurality of Code Blocks (CBs), and performs CRC check on each CB block. When the base station transmits data, the base station divides a plurality of CB blocks into a plurality of CBGs for scheduling and transmission, as shown in fig. 2. After receiving a plurality of 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 CBG unit, that is, when the CBs in a CBG are decoded correctly, the CBG feeds back ACK, otherwise, the CBG feeds back NAK. Wherein, the ACK indicates that the transmitted data has been received without error, and does not need to be retransmitted by the base station. NAK indicates that data has been received but that the data is in error, requiring the base station to retransmit the CBG. And the base station receives the ACK/NAK information fed back by the UE, retransmits the CBG for the CBG with NAK feedback, and does not retransmit the CBG for the CBG with ACK feedback.
The following describes the processes of initial transmission, feedback, and retransmission based on CBG between a base station and a UE, taking the example that the TB sent by the base station to the UE is divided into 14 CBs. The base station performs data transmission in a CBG mode through high-layer signaling configuration, and the number of the CBGs is configured to be 4. The base station willThe 14 CBs are divided into 4 CBGs. When the base station divides the CBGs, the numbers of CBs in the CBGs can be made as uniform as possible, that is, the difference between the numbers of CBs of any two CBGs is at most 1. Therefore, the 4 divided CBGs can be respectively CBGs as shown in FIG. 30＝{CB0,CB1,CB2,CB3}，CBG1＝{CB4,CB5,CB6,CB7}，CBG2＝{CB8,CB9,CB10}，CBG3＝{CB11,CB12,CB13}。
And the UE receives the 4 CBGs transmitted initially by the base station and decodes the CBs included in the 4 CBGs. Suppose that the UE determines CB5,CB6And CB12When decoding is wrong, the UE sends a Hybrid Automatic Repeat reQuest (HARQ) feedback codebook corresponding to the initial transmission to the base station, where the HARQ feedback codebook is a decoding check result corresponding to each of 4 CBGs, as shown in fig. 4, where the CBGs are CBGs0If all 4 CBs are correctly decoded, then CBG0The corresponding decoding check result is ACK. CBG1CB in5,CB6Decoding error, then CBG1The corresponding decoding check result is NAK. CBG2If all 4 CBs are correctly decoded, then CBG2The corresponding decoding check result is ACK. CBG3CB in12Decoding error, then CBG3The corresponding decoding check result is NAK. If NAK is represented by "0" and ACK is represented by "1", the HARQ feedback codebook corresponding to the initial transmission is "1010".
And after receiving the HARQ feedback codebook corresponding to the initial transmission, the base station retransmits for the first time, namely the CBGs corresponding to the NAKs in the received decoding check result are retransmitted to the UE respectively. As shown in fig. 5, i.e. retransmitting CBGs1＝{CB4,CB5,CB6,CB7And CBG3＝{CB11,CB12,CB13}。
The UE receives the CBG sent by the first retransmission of the base station1＝{CB4,CB5,CB6,CB7And CBG3＝{CB11,CB12,CB13After the preceding, for CBG1＝{CB4,CB5,CB6,CB7And CBG3＝{CB11,CB12,CB13Cbs included in the symbol are decoded, assuming that the Cbs are determined5And CB12When the decoding is wrong, the UE sends the HARQ feedback codebook corresponding to the first retransmission to the base station, where the HARQ feedback codebook is the decoding check result corresponding to each of 4 CBGs, as shown in fig. 6, where the CBGs are caused by the decoding check result0And CBG2When the last decoding is carried out, each CB contained in the first retransmission is determined to be correctly decoded, so that the CBG in the HARQ feedback codebook corresponding to the first retransmission0And CBG2The corresponding decoding check result is still ACK. And CBG1CB in5Decoding error, then CBG1The corresponding decoding check result is NAK. CBG3CB in12Decoding error, then CBG3The corresponding decoding check result is NAK. Therefore, the HARQ feedback codebook corresponding to the first retransmission is "1010".
After receiving the HARQ feedback codebook corresponding to the first retransmission, the base station performs a second retransmission and subsequent retransmissions, where the processes of the second retransmission and the subsequent retransmissions may refer to the process of the first retransmission, and are not repeated here. The base station may stop the retransmission after the UE decodes all 14 CBs correctly. Alternatively, the base station may stop the retransmission when the number of retransmissions reaches a preset maximum number of retransmissions.
As can be seen from the above retransmission process based on CBGs, when the base station retransmits data, it can only determine that CBs with decoding errors exist in the CBGs for CBGs corresponding to NAKs in the received decoding check node, but it cannot determine which CBs in the CBGs are decoded correctly and which CBs are decoded incorrectly, so that the base station needs to retransmit all CBs included in the CBGs. As above, the base station performs the first retransmission for the CBG with NAK as the decoding check result1＝{CB4,CB5,CB6,CB7Only the CBG can be determined }1＝{CB4,CB5,CB6,CB7There are CBs with decoding errors in the video signal, but it is not known that the CBs with decoding errors are CBs5,CB6Hence base stationCBG at first retransmission1＝{CB4,CB5,CB6,CB7All the Cbs are retransmitted, so that the correctly decoded Cbs4,CB7Are transmitted again, resulting in inefficient retransmission. In addition, in the HARQ feedback codebook corresponding to the data transmitted in the retransmission process, for the CBG for which ACK has been fed back previously, feedback is still required in the subsequent retransmission feedback. For example, the CBG sent by the UE on the first retransmission received in the above1＝{CB4,CB5,CB6,CB7And CBG3＝{CB11,CB12,CB13Fourthly, in a HARQ feedback codebook corresponding to the first retransmission, the CBG which is fed back as ACK before is included0And CBG2Therefore, information redundancy exists in the HARQ feedback codebook.
Based on this, the application provides a data transmission method and device, which are used for solving the problem of low retransmission efficiency of the retransmission technology based on the CBG. The method and the device are based on the same inventive concept, and because the principles of solving the problems of the method and the device are similar, the implementation of the device and the method can be mutually referred, and repeated parts are not repeated.
The plural in the present application means two or more.
In addition, it is to be understood that the terms first, second, etc. in the description of the present application are used for distinguishing between the descriptions and not necessarily for describing a sequential or chronological order.
The data transmission method provided by the present application is specifically described below with reference to the accompanying drawings.
Referring to fig. 7, a flowchart of a data transmission method provided in the present application is shown. The method can be applied to the retransmission process after the original data is transmitted from the sending end to the receiving end for the first time, the sending end can be a base station, the receiving end can be a terminal, wherein the sending end can transmit the data in a CBG mode through high-level signaling configuration, the number of the CBGs is configured to be N, and N is an integer greater than 0, and the method comprises the following steps:
s701, the sending end sends first retransmission data to the receiving end. The first retransmission data includes first CBGs respectively corresponding to the NAK decoding check results among the N decoding check results received last time by the transmitting end, the N decoding check results are fed back by the receiving end for the retransmission data sent last time by the transmitting end, and each first CBG includes at least one CB.
S702, the receiving end receives the first retransmission data sent by the sending end this time, and decodes the CB included in the first retransmission data received this time. The receiving end may decode only the CB which is not decoded correctly in the retransmitted data, or may decode each CB included in the retransmitted data.
S703, the receiving end sends an HARQ feedback codebook to the sending end, wherein the HARQ feedback codebook is a decoding check result corresponding to the N second CBGs respectively. The receiving end may determine N second CBGs based on the first retransmission data, and CBs included in any two second CBGs do not overlap with each other. And when the decoding check result corresponding to at least one CB in one second CBG is wrong, the decoding check result corresponding to the second CBG is NAK, otherwise, the decoding check result corresponding to the second CBG is ACK.
In a possible implementation manner, the receiving end may determine the N second CBGs by:
the receiving end determines that h second CBGs in the N second CBGs include a CBs, and other second CBGs except the h second CBGs in the N second CBGs respectively and correspondingly include b CBs. h may satisfy the following equation:
h＝mod(P，N)。
wherein the number of all CBs included in the first retransmission data.
a may satisfy the following formula:
Figure BDA0001646080110000101
b may satisfy the following formula:
Figure BDA0001646080110000111
the receiving end may determine that the first h second CBGs of the N second CBGs include a CBs, and the other second CBGs of the N second CBGs except the h second CBGs include b CBs, respectively. Therefore, the receiving end may regard each continuous a CBs as one second CBG from the first CB of the retransmission data until the number of the second CBGs reaches h, and then regard each continuous b CBs as one second CBG, where the numbers of CBs included in any two second CBGs do not overlap with each other.
Or, the receiving end may also determine that the last h second CBGs of the N second CBGs include a CBs, and that the other second CBGs of the N second CBGs except the h second CBGs include b CBs, respectively. Therefore, the receiving end may regard each continuous a CBs as one second CBG from the first CB of the retransmission data until the number of second CBGs reaches N-h, and then regard each continuous b CBs as one second CBG, where the numbers of CBs included in any two second CBGs do not overlap with each other.
Of course, the receiving end may also determine that any h second CBGs of the N second CBGs include a CBs, and the other second CBGs of the N second CBGs except the h second CBGs include b CBs, respectively.
S704, the sender divides the first retransmission data into N second CBGs. The method for dividing the first retransmission data into the N second CBGs by the transmitting end is the same as the method for determining the N second CBGs by the receiving end based on the first retransmission data.
S705, the transmitting end retransmits second retransmission data to the receiving end, where the second retransmission data includes second CBGs corresponding to the NAK decoding check results respectively from the N NAK decoding check results received by the transmitting end this time. When the sending end receives the decoding check results corresponding to the N second CBGs, the N decoding check results sent by the receiving end may be correctly received, or a certain decoding check result may be incorrectly received, for example, ACK is detected as NAK, or NAK is detected as ACK. And the transmitting end transmits retransmission data according to the decoding check result received by the transmitting end when retransmitting.
For better understanding of the embodiment of the present application, the data transmission process is described in detail below with reference to a specific application scenario, as shown in fig. 8.
For convenience of description, the embodiments of the present application
Figure BDA0001646080110000114
Denotes the ith CBG at the jth retransmission, where j is 0 corresponding to the initial transmission and i is 1,2 … N, j is 0,1,2 …CBGIn which N isCBGThe number of CBGs configured for the transmitting end through higher layer signaling. The sending end transmits data in a CBG mode through high-level signaling configuration, and the number of the CBGs is configured to be 4, namely NCBGEqual to 4.
S801, the sending end divides 14 CBs into 4 CBGs according to a preset rule(0)And 4 CBGs(0)And carrying out primary transmission to a receiving end. The preset rule may be that P CBs are divided into NCBGA CBG, wherein premod (P, N)CBG) Each CBG comprises
Figure BDA0001646080110000112
A CB, the rest of CBGs each include
Figure BDA0001646080110000113
And (5) CB. Therefore, the sending end divides the 14 CBs into 4 CBGs according to the preset rule(0)In (2) CBGs(0)All comprise
Figure BDA0001646080110000121
One CB, the remaining 2 CBGs(0)All comprise
Figure BDA0001646080110000122
And (5) CB. Thus 4 CBGs(0)As shown in FIG. 9, are
Figure BDA0001646080110000123
Figure BDA0001646080110000124
S802, the receiving end receives 4 CBGs initially transmitted by the transmitting end(0)Then, 4 CBGs are aligned(0)The included CB is decoded to determine the CB5,CB6And CB12A decoding error.
S803, the receiving end sends a first HARQ feedback codebook to the sending end, wherein the first HARQ feedback codebook is 4 CBGs(0)And respectively corresponding decoding check results.
Figure BDA0001646080110000125
If all 4 CBs in the set are correctly decoded, then
Figure BDA0001646080110000126
The corresponding decoding check result is ACK.
Figure BDA0001646080110000127
CB in5,CB6Decoding error, then
Figure BDA0001646080110000128
The corresponding decoding check result is NAK.
Figure BDA0001646080110000129
If all 4 CBs in the set are correctly decoded, then
Figure BDA00016460801100001210
The corresponding decoding check result is ACK.
Figure BDA00016460801100001211
CB in12Decoding error, then
Figure BDA00016460801100001212
The corresponding decoding check result is NAK. When the receiving end feeds back the decoding check result corresponding to each CBG to the transmitting end, NAK may be represented by "0" and ACK may be represented by "1", or, of course, NAK may also be represented by "1" and ACK may be represented by "0", which is not specifically limited in this embodiment of the present application. Hereinafter, NAK is represented by "0", and ACK is represented by "1The examples are illustrative. Therefore, the first HARQ feedback codebook is "1010".
S804, after receiving the first HARQ feedback codebook sent by the receiving end, the sending end performs the first retransmission according to the received first HARQ feedback codebook, that is, retransmits the CBG corresponding to the NAK in the received first HARQ feedback codebook to the receiving end(0). Taking the first HARQ feedback codebook received by the transmitting end as "1010", the transmitting end will perform the first retransmission
Figure BDA00016460801100001213
And retransmitting to the receiving end.
S805, the receiving end receives the retransmission from the transmitting end
Figure BDA00016460801100001214
Figure BDA00016460801100001215
Then, to
Figure BDA00016460801100001216
The included CB is decoded to determine the CB5And CB12A decoding error.
S806, the receiving end sends a second HARQ feedback codebook to the sending end, the second HARQ feedback codebook is 4 CBGs(1)And respectively corresponding decoding check results. Of which 4 CBGs(1)For the receiving end to
Figure BDA00016460801100001217
Figure BDA00016460801100001218
The 7 CBs included are divided based on the preset rule described in step S801. 4 CBGs(1)Pre mod (7, 4) ═ 3 CBGs in (c)(1)Included
Figure BDA00016460801100001219
One CB, the remaining 1 CBG(1)Included
Figure BDA00016460801100001220
And (5) CB. Thus 4 CBGs(1)As shown in FIG. 10, respectively are
Figure BDA00016460801100001221
Figure BDA0001646080110000131
Figure BDA0001646080110000132
CB in5Decoding error, then
Figure BDA0001646080110000133
The corresponding decoding check result is NAK.
Figure BDA0001646080110000134
2 CB in the first decoding table are correctly decoded, then
Figure BDA0001646080110000135
The corresponding decoding check result is ACK.
Figure BDA0001646080110000136
CB in12Decoding error, then
Figure BDA0001646080110000137
The corresponding decoding check result is NAK.
Figure BDA0001646080110000138
If the CB in (1) is correctly decoded, then
Figure BDA0001646080110000139
The corresponding decoding check result is ACK. Therefore, the second HARQ feedback codebook is "0101".
807, the transmitting end will receive the second HARQ feedback codebook
Figure BDA00016460801100001310
Figure BDA00016460801100001311
The 7 CBs included in the CBs are divided into 4 CBGs based on the preset rule of step S801(1)I.e. by
Figure BDA00016460801100001312
S808, the transmitting end performs a second retransmission according to the received second HARQ feedback codebook, that is, retransmits the CBG corresponding to the NAK in the received second HARQ feedback codebook(1). Taking the second HARQ feedback codebook received by the transmitting end as "0101", the transmitting end will perform the second retransmission
Figure BDA00016460801100001313
And retransmitting to the receiving end.
When the receiving end confirms the CB5And CB12When the decoding is wrong, the sending end sends in the retransmission process
Figure BDA00016460801100001314
Figure BDA00016460801100001315
The total number of CBs is 4, and in the prior art, a sending end needs to send CBG in the retransmission process1＝{CB4,CB5,CB6,CB7And CBG3＝{CB11,CB12,CB13The total number of the CBs is 7, and it can be seen that the embodiment of the application can reduce the data volume sent during retransmission, thereby better improving the retransmission efficiency.
S809, the receiving end receives the retransmission from the transmitting end
Figure BDA00016460801100001316
Then, to
Figure BDA00016460801100001317
The included CBs are decoded and it is determined that all decoding is correct.
S810, the receiving end sends a third HARQ feedback codebook to the sending end, and the third HARQ feedback codebookHARQ feedback codebook is 4 CBGs(2)And respectively corresponding decoding check results. Of which 4 CBGs(2)For the receiving end to
Figure BDA00016460801100001318
Figure BDA00016460801100001319
The 4 CBs included are divided based on the preset rule described in step S801. 4 CBGs(2)Each comprising 1 CB, as shown in FIG. 11
Figure BDA00016460801100001320
Figure BDA00016460801100001321
Due to 4 CBGs(2)If the CBs included in the video signal are all decoded correctly, 4 CBGs are obtained(2)And the corresponding decoding check results are all ACK. Therefore, the third HARQ feedback codebook is "1111".
S811, the transmitting end receives the third HARQ feedback codebook, and the received third HARQ feedback codebook is '1111', and ends data transmission.
The sending end may detect a decoding check result in the HARQ feedback codebook sent by the receiving end as ACK error as NAK, so that the CBG corresponding to the decoding check result as ACK is transmitted again at the time of retransmission by the sending end. For example, in step S804, if the transmitting end detects the first HARQ feedback codebook "1010" as "1000", the transmitting end will detect the first HARQ feedback codebook "1010" as "1000
Figure BDA0001646080110000141
And retransmitting the data to the receiving end, wherein,
Figure BDA0001646080110000142
the CBs in (1) are decoded correctly, but are still transmitted during retransmission. To solve this problem, in this embodiment, the sending end may detect the decoding check result of the error before correcting the HARQ feedback codebook sent by the receiving end in the subsequent retransmission process, that is, if the sending end detects the first HARQ feedback codebook "1010Measures as "1000" and will therefore
Figure BDA0001646080110000143
Figure BDA0001646080110000144
Retransmitting to the receiving end, receiving the CB in the HARQ feedback codebook capable of being fed back by the subsequent retransmission8,CB9,CB10The feedback is ACK, so that the sending end can determine CB according to the HARQ feedback codebook fed back by the subsequent retransmission8,CB9,CB10The corresponding decoding check result is that the decoding is correct.
Referring to fig. 12, a flow chart of another data transmission method provided by the present application is shown. The method can be applied to a retransmission process after a sending end transmits original data to a receiving end for the first time, the sending end can be a base station, the receiving end can be a terminal, wherein the sending end can perform data transmission in a CBG mode through high-level signaling configuration, and the number of the CBGs is configured to be G, so that the original data comprises G first CBGs, each first CBG comprises at least one CB, and the G is an integer greater than 0. The method comprises the following steps:
s1201, the transmitting end transmits retransmission data to the receiving end. The retransmission data is data retransmitted by the sending end aiming at the original data. Step S1202 is executed.
S1202, after receiving the retransmission data sent by the sending end this time, the receiving end decodes the CBs included in the retransmission data received this time, and updates the decoding check result corresponding to each CB included in the stored original data based on the obtained decoding check result, for example, for the decoding check result corresponding to a certain CB obtained in step S1202, the stored decoding check result corresponding to the CB is updated to the decoding check result corresponding to the certain CB obtained in step S1202. The receiving end may decode only the CB that is not decoded correctly in the retransmitted data, or may decode each CB included in the retransmitted data.
The retransmission data comprises a preset zone bit which is a first mark or a second mark. If the preset flag bit is the first flag, after step S1202, step S1203 is executed; if the preset flag bit is the second flag or is empty, after step S1203 is executed, step S1205 is executed. The first flag may be 1, and the second flag may be 0. Alternatively, the first flag may be 0, and the second flag may be 1, which is not specifically limited in this embodiment of the present application.
S1203, the receiving end sends HARQ feedback codebooks corresponding to the first marks to the sending end, and the HARQ feedback codebooks are decoding check results corresponding to the G second CBGs respectively. Wherein the receiving end may determine G second CBGs based on the retransmission data. And when the decoding check result corresponding to at least one CB in one second CBG is wrong, the decoding check result corresponding to the second CBG is NAK, otherwise, the decoding check result corresponding to the second CBG is ACK. Step S1204 is executed.
The method for determining G second CBGs by the receiving end may refer to the method for determining N second CBGs by the receiving end in step S703, and details are not repeated here.
S1204, when the preset flag bit in the retransmission data is the first flag, the transmitting end divides each CB in the retransmission data into G second CBGs, and retransmits the received second CBGs corresponding to NAKs in the HARQ feedback codebook corresponding to the first flag to the receiving end. When the transmitting end receives the HARQ feedback codebook corresponding to the first flag, the HARQ feedback codebook transmitted by the receiving end may be correctly received, or a decoding check result in the HARQ feedback codebook transmitted by the receiving end may be incorrectly received, that is, ACK is detected as NAK, or NAK is detected as ACK, for example, the HARQ feedback codebook whose content is "1010" is detected as "1110". And the transmitting end transmits retransmission data according to the HARQ feedback codebook received by the transmitting end. The method for dividing the retransmission data into G second CBGs by the transmitting end is the same as the method for determining G second CBGs by the receiving end in step S1203.
And S1205, the receiving end sends a retransmission request message carrying the HARQ feedback codebook corresponding to the second mark to the sending end, wherein the HARQ feedback codebook corresponding to the second mark is the decoding check result corresponding to the G first CBGs respectively. And when the decoding result codes of the updated CBs included in one first CBG are all decoded correctly, the decoding check result corresponding to the first CBG is ACK, otherwise, the decoding check result corresponding to the first CBG is NAK. Step S1206 is performed.
S1206, when the preset flag bit in the retransmission data is the second flag or is empty, the transmitting end retransmits the first CBGs respectively corresponding to the NAKs in the HARQ feedback codebook corresponding to the received second flag to the receiving end. When the transmitting end receives the HARQ feedback codebook corresponding to the second flag, the HARQ feedback codebook transmitted by the receiving end may be correctly received, or a decoding check result in the HARQ feedback codebook transmitted by the receiving end may be incorrectly received, that is, ACK is detected as NAK, or NAK is detected as ACK, for example, the HARQ feedback codebook whose content is "1010" is detected as "1110". And the transmitting end transmits retransmission data according to the HARQ feedback codebook received by the transmitting end.
For better understanding of the embodiment of the present application, the data transmission process is described in detail below with reference to a specific application scenario, as shown in fig. 13.
For convenience of description, the embodiments of the present application
Figure BDA0001646080110000151
Denotes the p-th CBG at the q-th retransmission, q is 0,1,2 …, where q is 0 for the initial transmission and p is 1,2 … NCBGIn which N isCBGThe number of CBGs configured for the transmitting end through higher layer signaling. The sending end transmits data in a CBG mode through high-level signaling configuration, and the number of the CBGs is configured to be 4, namely NCBGEqual to 4.
S1301, the sending end divides 14 CBs into 4 CBGs according to the preset rule in the step S801(0)And 4 CBGs(0)And carrying out primary transmission to a receiving end. As shown in fig. 10, 4 CBGs(0)Are respectively as
Figure BDA0001646080110000152
Figure BDA0001646080110000153
S1302, the receiving end receives the 4 CBGs initially transmitted by the transmitting end(0)Then, 4 CBGs are aligned(0)The included CB is decoded to determine the CB5,CB6And CB12Decoding errors and storing decoding check results corresponding to 14 CBs, namely the CBs5,CB6And CB12And the corresponding decoding check results are all decoding errors, and the decoding check results corresponding to the rest CBs are all decoding correctness.
S1303, the receiving end sends a first HARQ feedback codebook to the sending end, wherein the first HARQ feedback codebook is 4 CBGs(0)And respectively corresponding decoding check results. In the following description, NAK is represented by "0" and ACK is represented by "1". Therefore, the first HARQ feedback codebook is "1010".
S1304, after receiving the first HARQ feedback codebook sent by the receiving end, the sending end performs a first retransmission according to the received first HARQ feedback codebook, that is, performs a CBG corresponding to a NAK in the first HARQ feedback codebook received by the receiving end(0). Taking the first HARQ feedback codebook received by the transmitting end as "1010", the transmitting end will perform the first retransmission
Figure BDA0001646080110000161
Retransmitting to the receiving end and will include
Figure BDA0001646080110000162
The preset flag bit in the retransmission data is set as the first flag.
S1305, the receiving end receives the retransmission from the transmitting end
Figure BDA0001646080110000163
Figure BDA0001646080110000164
Then, to
Figure BDA0001646080110000165
The included CB is decoded to determine the CB5And CB12Decoding errors are generated, and the stored decoding check results of the 14 CBs are correspondingly updated according to the decoding check results obtained in the step S1305, so that the decoding check results are updatedThe decoding check results corresponding to the last 14 CBs are: CB (CB)5And CB12And the corresponding decoding check results are all decoding errors, and the decoding check results corresponding to the rest CBs are all decoding correctness.
S1306, when the receiving end judges that the preset flag bit in the received retransmission data is the first flag, the receiving end sends a second HARQ feedback codebook to the sending end, wherein the second HARQ feedback codebook comprises 4 CBGs(1)And respectively corresponding decoding check results. Of which 4 CBGs(1)For the receiving end to
Figure BDA0001646080110000166
The 7 CBs included are divided based on the preset rule described in step S801. As shown in fig. 10, 4 CBGs(1)Are respectively as
Figure BDA0001646080110000167
The second HARQ feedback codebook is "0101".
S1307, after receiving the second HARQ feedback codebook, the transmitting end will send a feedback codebook
Figure BDA0001646080110000168
Figure BDA0001646080110000169
The 7 CBs included in the CBs are divided into 4 CBGs based on the preset rule of step S801(1)I.e. by
Figure BDA00016460801100001610
S1308, the sending end retransmits for the second time according to the received second HARQ feedback codebook, namely retransmits the CBG corresponding to the NAK in the received second HARQ feedback codebook(1). Taking the second HARQ feedback codebook received by the transmitting end as "0101", the transmitting end will perform the second retransmission
Figure BDA0001646080110000171
Retransmitting to the receiving end and will include
Figure BDA0001646080110000172
The preset flag bit in the retransmission data is set as the second flag.
S1309, the receiving end receives the retransmission from the transmitting end
Figure BDA0001646080110000173
Then, to
Figure BDA0001646080110000174
The included CB is decoded to determine the CB5Decoding errors occur, and the decoding verification results corresponding to the 14 stored CBs are updated according to the decoding verification result obtained in step S1309, where the decoding verification results corresponding to the updated 14 CBs are: CB (CB)5And the corresponding decoding check result is a decoding error, and the decoding check results corresponding to the rest CBs are all correct in decoding.
S1310, when the receiving end judges that the preset flag bit in the received retransmission data is the second flag, the receiving end sends a third HARQ feedback codebook to the sending end, wherein the third HARQ feedback codebook comprises 4 CBGs(0)And respectively corresponding decoding check results. Wherein, according to the decoding check results respectively corresponding to the 14 CBs updated in step S1309, it is determined
Figure BDA0001646080110000175
Each CB in (1) is correctly decoded, then
Figure BDA0001646080110000176
The corresponding decoding check result is ACK,
Figure BDA0001646080110000177
CB in5Decoding error, then
Figure BDA0001646080110000178
The corresponding decoding check result is NAK. Therefore, the third HARQ feedback codebook is "1011".
S1311, the sending end receives the third HARQ feedback codebook, and performs a third retransmission according to the received third HARQ feedback codebook to terminate the sending endTaking the received third HARQ feedback codebook as "1011", the transmitting end will perform the second retransmission
Figure BDA0001646080110000179
Retransmitting to the receiving end, and including
Figure BDA00016460801100001710
The preset flag bit in the retransmission data is set as the first flag.
S1312, the receiving end receives the retransmission from the transmitting end
Figure BDA00016460801100001711
Then, to
Figure BDA00016460801100001712
Decoding the included CBs to determine that all the CBs are correctly decoded, and updating the stored decoding check results corresponding to the 14 CBs according to the decoding check result obtained in step S1312, so that the updated decoding check results corresponding to the 14 CBs are: the decoding check results corresponding to 14 CBs are all correctly decoded.
S1313, when the receiving end determines that the predetermined flag bit in the received retransmission data is the first flag, the receiving end generates a fourth HARQ feedback codebook to the sending end, where the fourth HARQ feedback codebook includes 4 CBGs(3)And respectively corresponding decoding check results. Of which 4 CBGs(3)For the receiving end to
Figure BDA00016460801100001713
The 4 CBs included in the set are divided based on the preset rule in step S801, and are respectively
Figure BDA0001646080110000181
Figure BDA0001646080110000182
The fourth HARQ feedback codebook is "1111".
S1314, the sender receives the fourth HARQ feedback codebook, where the received fourth HARQ feedback codebook is "1111", and ends data transmission.
The sending end may erroneously detect a certain decoding check result in the HARQ feedback codebook sent by the receiving end as NAK as ACK, so that the CBG corresponding to the decoding check result as NAK is not transmitted during retransmission by the sending end. For example, in step S1304, if the transmitting end detects the first HARQ feedback codebook "1010" as "1110", the transmitting end will determine that
Figure BDA0001646080110000183
And retransmitting the data to the receiving end, wherein,
Figure BDA0001646080110000184
the CB with the decoding error in (1) is not transmitted during retransmission, so that the receiving end cannot correctly receive the CB with the decoding error. To address this problem, in this embodiment of the application, the sending end may detect a decoding check result of an error before correcting the HARQ feedback codebook sent by the receiving end in the subsequent retransmission process, that is, if the sending end detects that the first HARQ feedback codebook "1010" is "1110", only the sending end will detect the error, that is, the sending end will only detect the error due to the first HARQ feedback codebook "1010"
Figure BDA0001646080110000185
Retransmitting to the receiving end without transmitting
Figure BDA0001646080110000186
And carrying out retransmission. The receiving end can preset the flag bit as the second flag in the retransmission data
Figure BDA0001646080110000187
The corresponding decoding check result is fed back again in the second HARQ feedback codebook, so that the sending end can determine the second HARQ feedback codebook
Figure BDA0001646080110000188
There is a CB with decoding error, so that it can be transmitted next time
Figure BDA0001646080110000189
To the receiving endLine retransmission to allow re-reception decoding at the receiving end
Figure BDA00016460801100001810
Based on the same inventive concept as the method embodiments described in fig. 7 to fig. 13, the present application further provides a terminal device, as shown in fig. 14, including: reception section 1401, decoding section 1402, and transmission section 1403. The receiving unit 1401 is configured to perform a data receiving process in step S702 or step S1202, the decoding unit 1402 is configured to perform a decoding process in step S702 or step S1202, and the transmitting unit 1403 is configured to perform step S703, step S1203, or step S1205. The terminal device may further include an updating unit 1404, configured to perform the updating process in step S1202, and repeated parts are not described herein again.
Based on the same inventive concept as the method embodiments described in fig. 7 to 13, the present application further provides a network device, as shown in fig. 15, including: a transmission unit 1501, a reception unit 1502, and a division unit 1503. The sending unit 1501 is configured to execute the step S701, or the step S705, or the step S1201, or the retransmission process of the step 1204, or the retransmission process of the step S1206, the receiving unit 1502 is configured to execute the receiving process of the transmitting end corresponding to the step S703 or the receiving process of the transmitting end corresponding to the step S1202, and the dividing unit 1503 is configured to execute the dividing process of the step S704 or the step S1204, which is repeated here and will not be described again.
The division of the modules in the embodiments of the present application is schematic, and only one logical function division is provided, and in actual implementation, there may be another division manner, and in addition, each functional module in each embodiment of the present application may be integrated in one processor, may also exist alone physically, or may also be integrated in one module by two or more modules. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode.
When the integrated module may be implemented in the form of hardware, as shown in fig. 16, an apparatus, which may be applied to a terminal device or a network device, is further provided in this embodiment of the present application, and the apparatus may include a processor 1602. The hardware of the entity corresponding to the above modules may be the processor 1602. The processor 1602 may be a Central Processing Unit (CPU), a digital processing module, or the like. The apparatus may also include a transceiver 1601, where the processor 1602 receives data via the transceiver 1601. The device also includes: a memory 1603 for storing programs executed by the processor 1602. The memory 1603 may be a non-volatile memory, such as a hard disk drive (abbreviated HDD) or a solid-state drive (abbreviated SSD), and may also be a volatile memory, such as a random-access memory (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 to such.
The processor 1602 is configured to execute the program code stored in the memory 1603, and is specifically configured to execute the method according to the embodiment shown in fig. 7 or fig. 13. Reference may be made to the method described in the embodiment shown in fig. 7 or fig. 13, which is not described herein again.
The embodiment of the present application does not limit the specific connection medium among the transceiver 1601, the processor 1602, and the memory 1603. In the embodiment of the present application, the memory 1603, the processor 1602 and the transceiver 1601 are connected by the bus 1604 in fig. 16, the bus is indicated by a thick line in fig. 16, and the connection manner between other components is merely schematically illustrated and is not limited. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 16, but this is not intended to represent only one bus or type of bus.
The embodiment of the present invention further provides a computer program product, which is used for storing computer software instructions required to be executed for executing the processor, and includes a program required to be executed for executing the processor.
The present application provides a computer program product containing instructions, which when run on a computer, causes the computer to perform the method described above with reference to fig. 7 to 13.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may 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, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims (17)

1. A method of data transmission, the method comprising:
a receiving end receives first retransmission data sent by a sending end this time, wherein the first retransmission data comprises first coding block groups respectively corresponding to NAK decoding check results in N decoding check results received by the sending end last time, the N decoding check results are fed back by the receiving end aiming at the retransmission data sent by the sending end last time, each first coding block group comprises at least one coding block, and N is an integer greater than 0;
the receiving end decodes the coding block included in the first retransmission data received this time;
the receiving end sends decoding check results corresponding to the N second coding block groups to the sending end, the N second coding block groups are determined by the receiving end based on the coding blocks included in the first retransmission data received this time, the coding blocks included in any two second coding block groups are not overlapped with each other, when the decoding check result corresponding to at least one coding block in one second coding block group is wrong, the decoding check result corresponding to the second coding block group is NAK, otherwise, the decoding check result corresponding to the second coding block group is ACK;
and the receiving end receives second retransmission data retransmitted by the transmitting end, wherein the second retransmission data comprise second coding block groups respectively corresponding to NAK decoding check results in the N decoding check results received by the transmitting end this time.
2. The method of claim 1, wherein h second coding block groups of the N second coding block groups respectively include a coding blocks, and the other second coding block groups of the N second coding block groups except the h second coding block groups respectively include b coding blocks;
wherein h satisfies the following formula:
h＝mod(P，N)；
the P is the number of all coding blocks included in the first retransmission data received this time;
the a satisfies the following formula:
Figure FDA0003142351490000011
the b satisfies the following formula:
Figure FDA0003142351490000012
3. the method according to claim 1 or 2, wherein the first retransmission data carries a predetermined flag, and the predetermined flag is used to instruct the receiving end to feed back decoding check results corresponding to the N second coding block groups, respectively.
4. A method of data transmission, the method comprising:
a sending end sends first retransmission data to a receiving end, wherein the first retransmission data comprises first coding block groups respectively corresponding to NAK decoding check results in N decoding check results received last time by the sending end, the N decoding check results are fed back by the receiving end aiming at the retransmission data sent last time by the sending end, each first coding block group comprises at least one coding block, and N is an integer greater than 0;
the sending end receives decoding check results corresponding to the N second coding block groups sent by the receiving end, the N second coding block groups are determined by the receiving end based on decoding of coding blocks included in the first retransmission data received this time and coding blocks included in the first retransmission data received this time, coding blocks included in any two second coding block groups do not overlap with each other, when a decoding check result corresponding to at least one coding block in one second coding block group is an error, a decoding check result corresponding to the second coding block group is NAK, otherwise, a decoding check result corresponding to the second coding block group is ACK;
the sending end divides the first retransmission data into the N second coding block groups;
and the transmitting end retransmits second retransmission data to the receiving end, wherein the second retransmission data comprises second coding block groups respectively corresponding to the NAK decoding check results in the N decoding check results received by the transmitting end this time.
5. The method of claim 4, wherein h second coding block groups of the N second coding block groups respectively include a coding blocks, and the other second coding block groups of the N second coding block groups except the h second coding block groups respectively include b coding blocks;
wherein h satisfies the following formula:
h＝mod(P，N)；
the P is the number of all coding blocks included in the first retransmission data;
the a satisfies the following formula:
Figure FDA0003142351490000021
the b satisfies the following formula:
Figure FDA0003142351490000022
6. the method according to claim 4 or 5, wherein the first retransmission data carries a predetermined flag, and the predetermined flag is used to instruct the receiving end to feed back decoding check results corresponding to the N second coding block groups, respectively.
7. A method of data transmission, the method comprising:
a receiving end receives first retransmission data sent by a sending end, wherein the first retransmission data is data retransmitted by the sending end aiming at original data originally sent to the receiving end, the original data comprises G coding block groups, each coding block group comprises at least one coding block, and G is an integer greater than 0;
the receiving end decodes the coding blocks included in the first retransmission data, and correspondingly updates the decoding check results respectively corresponding to the coding blocks included in the stored original data according to the decoding check results respectively corresponding to the coding blocks included in the first retransmission data;
when the receiving end carries a preset mark in the first retransmission data, the receiving end sends decoding check results corresponding to the G coding block groups to the sending end, when the decoding check result corresponding to at least one coding block in one coding block group is wrong, the decoding check result corresponding to the coding block group is NAK, otherwise, the decoding check result corresponding to the coding block group is ACK; the preset mark is used for indicating the receiving end to feed back the decoding check results corresponding to the G coding block groups to the transmitting end respectively;
and the receiving end receives second retransmission data sent by the sending end, wherein the second retransmission data is an encoding block group corresponding to a NAK decoding check result in the G decoding check results received by the sending end.
8. A method of data transmission, the method comprising:
a sending end sends first retransmission data to a receiving end, wherein the first retransmission data carries a preset mark, and the preset mark is used for indicating the receiving end to feed back decoding check results corresponding to G coding block groups to the sending end; the first retransmission data is data retransmitted by the sending end aiming at original data which is originally sent to the receiving end, the original data comprises G coding block groups, each coding block group comprises at least one coding block, and G is an integer which is larger than 0;
the sending end receives decoding check results respectively corresponding to the G coding block groups sent by the receiving end, and the decoding check results respectively corresponding to the G coding block groups are obtained after the receiving end decodes the coding blocks included in the first retransmission data and correspondingly updates the decoding check results respectively corresponding to the coding blocks included in the stored original data according to the decoding check results respectively corresponding to the coding blocks included in the first retransmission data; when the decoding check result corresponding to at least one coding block in a coding block group is wrong, the decoding check result corresponding to the coding block group is NAK, otherwise, the decoding check result corresponding to the coding block group is ACK;
and the sending end sends second retransmission data to the receiving end, wherein the second retransmission data is an encoding block group corresponding to a NAK decoding check result in the decoding check result received by the sending end.
9. A terminal device, comprising:
a transceiver, configured to receive first retransmission data sent by a sending end this time, where the first retransmission data includes first coding block groups respectively corresponding to decoding check results that are NAK in N decoding check results received by the sending end last time, where the N decoding check results are fed back by a receiving end for the retransmission data sent by the sending end last time, each of the first coding block groups includes at least one coding block, and N is an integer greater than 0;
the processor is used for decoding the coding blocks included in the first retransmission data received by the transceiver this time;
the transceiver is further configured to send, to the sending end, decoding check results corresponding to N second coding block groups, where the N second coding block groups are determined by the processor based on coding blocks included in the first retransmission data received this time, and coding blocks included in any two second coding block groups are not overlapped with each other, when a decoding check result corresponding to at least one coding block in one second coding block group is an error, the decoding check result corresponding to the second coding block group is NAK, and otherwise, the decoding check result corresponding to the second coding block group is ACK;
the transceiver is further configured to receive second retransmission data from the sending end, where the second retransmission data includes second coding block groups corresponding to the respective NAK decoding check results among the N NAK decoding check results received by the sending end this time.
10. The terminal device of claim 9, wherein h second coding block groups of the N second coding block groups respectively include a coding blocks, and the other second coding block groups than the h second coding block groups of the N second coding block groups respectively include b coding blocks;
wherein h satisfies the following formula:
h＝mod(P，N)；
the P is the number of all coding blocks included in the first retransmission data received this time;
the a satisfies the following formula:
Figure FDA0003142351490000031
the b satisfies the following formula:
Figure FDA0003142351490000032
11. the terminal device according to claim 9 or 10, wherein the first retransmission data carries a preset flag, and the preset flag is used to instruct the processor to feed back decoding check results corresponding to the N second coding block groups, respectively.
12. A network device, characterized in that the network device comprises:
a transceiver, configured to send first retransmission data to a receiving end, where the first retransmission data includes first coding block groups respectively corresponding to decoding check results that are NAK in N decoding check results received last time by the sending end, the N decoding check results are fed back by the receiving end for the retransmission data sent last time by the sending end, each of the first coding block groups includes at least one coding block, and N is an integer greater than 0; receiving decoding check results corresponding to the N second coding block groups from the receiving end, where the N second coding block groups are determined by the receiving end based on decoding of coding blocks included in the first retransmission data received this time and coding blocks included in the first retransmission data received this time, coding blocks included in any two second coding block groups do not overlap with each other, when a decoding check result corresponding to at least one coding block in one second coding block group is an error, a decoding check result corresponding to the second coding block group is NAK, and otherwise, a decoding check result corresponding to the second coding block group is ACK;
a processor, configured to divide the first retransmission data into the N second coding block groups;
the transceiver is further configured to retransmit second retransmission data to the receiving end, where the second retransmission data includes second coding block groups corresponding to the decoding check results that are NAK in the N decoding check results received by the transmitting end this time.
13. The network device of claim 12, wherein h second coding block groups of the N second coding block groups respectively include a coding blocks, and the other second coding block groups of the N second coding block groups except the h second coding block groups respectively include b coding blocks;
wherein h satisfies the following formula:
h＝mod(P，N)；
the P is the number of all coding blocks included in the first retransmission data;
the a satisfies the following formula:
Figure FDA0003142351490000041
the b satisfies the following formula:
Figure FDA0003142351490000042
14. the network device according to claim 12 or 13, wherein the first retransmission data carries a preset flag, and the preset flag is used to instruct the receiving end to feed back decoding check results corresponding to the N second coding block groups, respectively.
15. A terminal device, comprising:
a transceiver, configured to receive first retransmission data from a sending end, where the first retransmission data is data that is retransmitted by the sending end for original data that is originally sent to the terminal device, and the original data includes G coding block groups, each coding block group includes at least one coding block, and G is an integer greater than 0;
the processor is used for decoding the coding blocks included in the first retransmission data received by the transceiver and correspondingly updating the stored decoding check results respectively corresponding to the coding blocks included in the original data according to the decoding check results respectively corresponding to the coding blocks included in the first retransmission data;
the transceiver is further configured to send, to the sending end, decoding check results corresponding to the G coding block groups when the first retransmission data carries a preset flag, where when a decoding check result corresponding to at least one coding block in one coding block group is an error, the decoding check result corresponding to the coding block group is a NAK, and otherwise, the decoding check result corresponding to the coding block group is an ACK; the preset mark is used for indicating the processor to feed back decoding check results corresponding to the G coding block groups to the sending end respectively;
the transceiver is further configured to receive second retransmission data sent by the sending end, where the second retransmission data is an encoding block group corresponding to a decoding check result that is a NAK among G decoding check results received by the sending end.
16. A network device comprising a transceiver and a processor;
the transceiver is used for transceiving data;
the processor is configured to control the transceiver to send first retransmission data to a receiving end, where the first retransmission data is data that is retransmitted by the processor with respect to original data that is initially sent to the receiving end, the original data includes G coding block groups, each coding block group includes at least one coding block, and G is an integer greater than 0; when the first retransmission data carries a preset flag, receiving decoding check results respectively corresponding to the G coding block groups from the receiving end, where the decoding check results respectively corresponding to the G coding block groups are obtained after the receiving end decodes the coding blocks included in the first retransmission data, and correspondingly updates the decoding check results respectively corresponding to the coding blocks included in the stored original data according to the decoding check results respectively corresponding to the coding blocks included in the first retransmission data; when the decoding check result corresponding to at least one coding block in a coding block group is wrong, the decoding check result corresponding to the coding block group is NAK, otherwise, the decoding check result corresponding to the coding block group is ACK; controlling the transceiver to send second retransmission data to the receiving end, wherein the second retransmission data is a coding block group corresponding to NAK in the received decoding verification result;
the preset mark is used for indicating the receiving end to feed back the decoding check results corresponding to the G coding block groups to the network equipment.
17. A computer-readable storage medium, in which a program is stored, which when read and executed by one or more processors, implements the method of any one of claims 1 to 8.
CN201810402561.2A 2018-04-28 2018-04-28 Data transmission method and device Active CN110417519B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201810402561.2A CN110417519B (en) 2018-04-28 2018-04-28 Data transmission method and device
PCT/CN2019/084149 WO2019206197A1 (en) 2018-04-28 2019-04-24 Method and device for data transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810402561.2A CN110417519B (en) 2018-04-28 2018-04-28 Data transmission method and device

Publications (2)

Publication Number Publication Date
CN110417519A CN110417519A (en) 2019-11-05
CN110417519B true CN110417519B (en) 2021-10-01

Family

ID=68294404

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810402561.2A Active CN110417519B (en) 2018-04-28 2018-04-28 Data transmission method and device

Country Status (2)

Country Link
CN (1) CN110417519B (en)
WO (1) WO2019206197A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112671511B (en) * 2020-12-23 2022-03-18 上海微波技术研究所（中国电子科技集团公司第五十研究所） Parallel CRC (Cyclic redundancy check) method and system based on partial retransmission

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105515719B (en) * 2014-09-24 2019-04-26 中兴通讯股份有限公司 A kind of data transmission method and device
CN105871512B (en) * 2016-05-13 2019-04-12 华为技术有限公司 A kind of data transmission method and device
CN107888330B (en) * 2016-09-30 2022-04-05 华为技术有限公司 Data transmission method and device
CN107787047A (en) * 2017-11-20 2018-03-09 深圳市金立通信设备有限公司 Resource allocation methods, relevant device and computer-readable medium

Also Published As

Publication number Publication date
WO2019206197A1 (en) 2019-10-31
CN110417519A (en) 2019-11-05

Similar Documents

Publication Publication Date Title
CN111226407B (en) Group-based hybrid automatic repeat request acknowledgement feedback method and user equipment
CN108809534B (en) Scheduling method, HARQ-ACK feedback method and corresponding equipment
CN106888074A (en) The repeating method and device of a kind of code block
CN108011696A (en) Retransmission feedback method, relevant device and computer-readable medium
CN106953718A (en) A kind of implementation method, device and the equipment of the retransmission process of code block
CN107113110B (en) Control information sending method and communication equipment
CN111770572B (en) Method for determining feedback information and communication device
CN114826490A (en) Scheduling method, HARQ-ACK feedback method and corresponding equipment
US11356210B2 (en) Data verification information generation and feedback method, data verification information receiving method and device
CN110034901A (en) The generation method of hybrid automatic repeat request code book, user equipment, medium
CN110876204A (en) Mobile communication system, network equipment, terminal equipment and data scheduling method
CN110034902B (en) Method for generating hybrid automatic repeat request codebook, user equipment and medium
CN107925445A (en) A kind of sending method of feedback information, user equipment and base station
CN110635867B (en) Communication method, network equipment and terminal
CN107196740A (en) The transmission method and device of a kind of code block
CN111385067A (en) Downlink data scheduling HARQ-ACK codebook feedback and generation method, device and medium
CN108347311A (en) Send and receive method, access network equipment and the terminal device of feedback information
CN107113818A (en) A kind of data transmission method and device
CN109314590B (en) Uplink transmission method and device
CN111083791B (en) Data transmission method and device
CN110417519B (en) Data transmission method and device
CN109120373B (en) Channel coding method, data receiving method and related equipment
EP3512142A1 (en) Communication method, terminal device and network device
CN113949491B (en) HARQ-ACK information transmission method and device
CN107005372B (en) Method for transmitting feedback information, user equipment and access equipment

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant