Data transmission method and apparatus

Patent metadata

Field	Value
Publication number	US-10856286-B2
Application number	US-201916402818-A
Country	US
Kind code	B2
Filing date	May 3, 2019
Priority date	Nov 4, 2016
Publication date	Dec 1, 2020
Grant date	Dec 1, 2020

Abstract

In a data transmission method, a terminal device receives control information, and receives data of a transport block (TB); and the terminal devices obtains m code block (CB) groups in the TB, where m is a positive integer, m=min(NCB_re, NGroup_max), NCB_re is a quantity of CBs in the TB, NGroup_max is a maximum value of a quantity of CB groups, each of the m CB groups includes at least one CB, NCB_re is determined based on a TB size (TBS) and a maximum value of a data size of a CB, and the TBS is determined based on the control information.

First claim

What is claimed is:

1. A method, comprising:
receiving, by a terminal device, control information;
receiving, by the terminal device based on the control information, data of a transport block (TB); and
obtaining, by the terminal device based on the control information, m code block (CB) groups in the TB, wherein m is a positive integer, m=min(N CB_re , N Group_max ), N CB_re is a quantity of CBs in the TB, N Group_max is a maximum quantity of CB groups for the TB, each of the m CB groups comprises at least one CB, and N CB_re is determined based on a TB size (TBS) and a maximum size of a CB.

2. The method according to claim 1 , wherein a quantity of CBs in each of the m
CB groups is C + or C − , wherein

C
+

=

⌈

N

CB
⁢

⁢
_
⁢

⁢
re

m

⌉

⁢

⁢
and
⁢

⁢

C
-

=

⌊

N

CB
⁢

⁢
_
⁢

⁢
re

m

⌋

.

3. The method according to claim 2 , wherein in the m CB groups, each CB group of the first N + CB groups comprises C + CBs, each CB group of the last N − CB groups comprises C − CBs, wherein N + =N CB_re −mC − and N − =m−N + .

4. The method claim 1 , wherein the control information comprises one redundancy version (RV) for the TB.

5. The method according to claim 1 , wherein
the control information comprises N Group_max -bit information, and the N Group_max -bit information indicates whether data of each of the m CB groups is retransmitted.

6. The method according to claim 5 , wherein the method further comprises:
sending an acknowledgement/negative acknowledgement (ACK/NACK) comprising N Group_max bits.

7. The method according to claim 6 , wherein each bit of the N Group_max bits indicates whether data of a corresponding CB group is correctly checked or not.

8. A communication apparatus, comprising:
a transceiver;
at least one processor; and
a non-transitory computer-readable storage medium coupled to the at least one processor and storing programming instructions for execution by the at least one processor, wherein the programming instructions instruct the at least one processor to:
cause the transceiver to receive control information, and receive data of a transport block (TB); and
obtain, based on the control information, m code block (CB) groups in the TB, wherein m is a positive integer, m=min(N CB_re , N Group_max ), N CB_re is a quantity of CBs in the TB, N Group_max is a maximum quantity of CB groups, each of the m CB groups comprises at least one CB, and N CB_re is determined based on a TB size (TBS) and a maximum size of a CB.

9. The apparatus according to claim 8 , wherein a quantity of CBs in each of the
m CB groups is C + or C − , wherein

C
+

=

⌈

N

CB
⁢

⁢
_
⁢

⁢
re

m

⌉

⁢

⁢
and
⁢

⁢

C
-

=

⌊

N

CB
⁢

⁢
_
⁢

⁢
re

m

⌋

.

10. The apparatus according to claim 9 , wherein in the m CB groups, each CB group of the first N + CB groups comprises C + CBs, each CB group of the last N − CB groups comprises C − CBs, wherein N + =N cB_re −mC − and N − =m−N + .

11. The apparatus according to claim 8 , wherein the control information comprises one redundancy version (RV) for the TB.

12. The apparatus according to claim 8 , wherein the control information comprises N Group_max -bit information, and the N Group_max -bit information indicates whether data of each of the m CB groups is retransmitted.

13. The apparatus according to claim 12 , wherein
the transceiver is further configured to send an acknowledgement/negative acknowledgement (ACK/NACK) comprising N Group_max bits.

14. The apparatus according to claim 13 , wherein each bit of the N Group_max bits indicates whether data of a corresponding CB group is correctly checked or not.

15. A processing apparatus, comprising:
at least one processor; and
a non-transitory computer-readable storage medium coupled to the at least one processor and storing programming instructions for execution by t

Assignees

• Huawei Tech Co Ltd

Inventors

• Peng Jinlin
• Dong Pengpeng
• Wang Zongjie
• Zhang Peng

Classifications

• H04W72/23 Primary

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W72/0453

  Resources in frequency domain, e.g. a carrier in FDMA · CPC title

• H04W72/0446

  Resources in time domain, e.g. slots or frames · CPC title

• H04L5/0048 Primary

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title

• H04L1/0013

  Rate matching, e.g. puncturing or repetition of code symbols · CPC title