Data transmission method and communication apparatus

Patent metadata

Field	Value
Publication number	US-11895534-B2
Application number	US-202117352749-A
Country	US
Kind code	B2
Filing date	Jun 21, 2021
Priority date	Dec 21, 2018
Publication date	Feb 6, 2024
Grant date	Feb 6, 2024

Abstract

Embodiments of this application provide a data transmission method and a communication apparatus. The method includes: A network device sends first information to a terminal device, where the first information is used to indicate transport block size TBS configuration information and/or redundancy version RV configuration information, the TBS configuration information is used to configure a first transport block size TBS, and the RV configuration information is used to configure first RV information. The network device receives a transport block from the terminal device, or the network device sends a transport block to the terminal device, where a TBS of the transport block is the first TBS, and/or RV information of the transport block is the first RV information. The network device may expand a TBS and/or refine an RV by using the TBS configuration information and/or the RV configuration information, thereby improving a spectral efficiency when the TB is transmitted.

First claim

What is claimed is:

1. A data transmission method, wherein the method comprises:
sending, by a network device, first information to a terminal device, wherein the first information indicates at least one of transport block size (TBS) configuration information or redundancy version (RV) configuration information, the TBS configuration information configures a first TBS, and the RV configuration information configures a first RV information; and
performing, by the network device, at least one of:
receiving, by the network device, a transport block from the terminal device; or
sending, by the network device, the transport block to the terminal device;

wherein:
a TBS of the transport block is the first TBS; or
an RV information of the transport block is the first RV information;

wherein:
the first TBS is an expanded TBS enabling more bits for a resource unit to be transmitted to increase a transmission code rate and the first RV information is a refined RV having a smaller granularity for reducing a minimum quantity of resources used to provide correct decoding, a spectral efficiency is increased in response to receiving or sending the transport block based on the expanded TBS or based on the refined RV.

2. The method according to claim 1 , wherein
the expanded TBS and the refined RV are used together to increase the spectral efficiency in response to receiving or sending the transport block based on the expanded TBS and based on the refined RV.

3. The method according to claim 1 , wherein the first RV information comprises at least one of a quantity M, wherein the quantity M is an integer greater or equal to 1 that indicates a number of RVs, or information of a start position of the RVs, and wherein the start position of each RV of the RVs is determined based on a length of a mother code obtained after transport block coding and a number of the start position of the RV in start positions of the RVs.

4. The method according to claim 3 , wherein the start position of each RV of the RVs is determined based on the length of the mother code obtained after the transport block coding, a first parameter, and the number of the start position of the RV in the start positions of the RVs, wherein the first parameter determines a check matrix dimension corresponding to a coding scheme used by the transport block; or
the start position of each RV is determined based on the length of the mother code obtained after the transport block coding, the quantity M, the number of the start position of the RV in the start positions of the RVs, and a preset bit offset.

5. The method according to claim 2 , wherein:
the first RV information further comprises a sequence of the RVs; or
the sequence of the RVs is indicated by second information which are sent to the terminal device.

6. A data transmission method, wherein the method comprises:
receiving, by a terminal device, first information from a network device, wherein the first information indicates at least one of transport block size (TBS) configuration information or redundancy version (RV) configuration information, the TBS configuration information configures a first TBS, and the RV configuration information configures a first RV information; and
performing, by the terminal device, at least one of:
sending, by the terminal device, a transport block to the network device based on the at least one of the TBS configuration information or the RV configuration information; or
receiving, by the terminal device, the transport block from the network device based on the at least one of the TBS configuration information or the RV configuration information;

wherein:
a TBS of the transport block is the first TBS; or
an RV information of the transport block is the first RV information
wherein:
the first TBS is an expanded TBS enabling more bits for a resource unit to be transmitted to increase a transmission code rate and the first RV information is a refined RV having a smaller granularity for reducing a minimum quantity of resources used to provide correct decoding, a spectral efficiency is increased in response to receiving or sending the transport block based on the expanded TBS or based on the refined RV.

7. The method according to claim 6 , wherein
the expanded TBS and the refined RV are used together to increase the spectral efficiency in response to receiving or sending the transport block based on the expanded TBS and based on the refined RV.

8. The method according to claim 6 , wherein the first RV information comprises at least one of a quantity M, wherein the quantity M is an integer greater or equal to 1 that indicates a number of RVs, or information of a start position of the RVs, and wherein the start position of each RV of the RVs is determined based on a length of a mother code obtained after transport block coding and a number of the start position of the RV in start positions of the RVs.

9. The method according to claim 8 , wherein the start position of each RV of the RVs is determined based on the length of the mother code obtained after the transport block coding, a first parameter, and the number of the start position of the RV in the start positions of the RVs, wherein the first parameter determines a check matrix dimension corresponding to a coding scheme used by the transport block; or
the start position of each RV is determined based on the length of the mother code obtained after the transport block coding, the quantity M, the number of the start position of the RV in the start positions of the RVs, and a preset bit offset.

10. The method according to claim 7 , wherein:
the first RV information further comprises a sequence of the RVs; or
the sequence of the RVs is indicated by second information which are sent to the terminal device.

11. A communication apparatus, comprising:
one or more processors; and
a memory configured to store program instructions;
wherein, when executed by the one or more processors, the program instructions cause the communications apparatus to:
send first information to a terminal device, wherein the first information indicates at least one of transport block size (TBS) configuration information or redundancy version (RV) configuration information, the TBS configuration information configures a first TBS, and the RV configuration information configures a first RV information; and
perform at least one of:
receive a transport block from the terminal device; or
send the transport block to the terminal device;
wherein:
a TBS of the transport block is the first TBS; or
an RV information of the transport block is the first RV information;
wherein the first TBS is an expanded TBS enabling more bits for a resource unit to be transmitted to increase a transmission code rate and the first RV information is a refined RV having a smaller granularity for reducing a minimum quantity of resources used to provide correct decoding, a spectral efficiency is increased in response to receiving or sending the transport block based on the expanded TBS or based on the refined RV.

12. The apparatus according to claim 11 , wherein
the expanded TBS and the refined RV are used together to increase the spectral efficiency in response to receiving or sending the transport block based on the expanded TBS and based on the refined RV.

13. The apparatus according to claim 11 , wherein the first RV information comprises at least one of a quantity M, wherein the quantity M is an integer greater or equal to 1 that indicates a number of RVs, or information of a start position of the RVs, and wherein the start position of each RV of the RVs is determined based on a length

Assignees

• Huawei Tech Co Ltd

Inventors

• Yu Yawei
• Li Chaojun

Classifications

• H04W28/06 Primary

  Optimizing {the usage of the radio link}, e.g. header compression, information sizing {, discarding information (system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365)} · CPC title

• H04L1/0003

  by switching between different modulation schemes · CPC title

• H04L1/0007

  by modifying the frame length · CPC title

• H04L1/1819 Primary

  with retransmission of additional or different redundancy · CPC title

• H04L1/0027

  Scheduling of signalling, e.g. occurrence thereof · CPC title