Data transmission method and device

Abstract

A data transmission method and apparatus relates to the field of communication technologies, and can improve the performance of communication in a sidelink scenario. The method includes: a receiver device receives N transport blocks TB, N is a positive integer, the receiver device obtains an upper limit of an amount of transmission of a feedback channel and an interlace parameter, and sends feedback information for M TBs of the N TBs via an interlace based on the interlace parameter and the upper limit of an amount of transmission, M is a positive integer, M is less than or equal to N, M is less than or equal to an upper limit of an amount P of the feedback information sent by the receiver device, the upper limit of the amount P is determined based on the upper limit of the amount of transmission and the interlace parameter, and P is a positive integer.

Claims

1. 1. A method for transmitting data, the method comprising: receiving, by a receiver device, N transport blocks TB, where N is a positive integer; obtaining, by the receiver device, an upper limit on the amount of transmission of a feedback channel and parameters of an interlace; sending feedback information for M of the N TBs over the interlaces based on the parameters of the interlaces and the upper limit of an amount of the transmission, where M is a positive integer, M is less than or equal to N, and M is less than or equal to an upper limit P of an amount of feedback information sent by the receiver device, where P is determined based on the upper limit of an amount of the transmission and the parameters of the interlaces, where P is a positive integer; The method includes:

2. The method of claim 1 , wherein the parameters of the interlace include a gap between adjacent physical resource blocks (PRB) in the interlace and / or an amount of PRBs in the interlace.

3. The upper limit P satisfies the following conditions: [0010] or [0025] or [0030] or [0045] or [0050] or [006] L represents the upper limit of the amount of transmission, [0070] represents the amount of PRBs in the bandwidth occupied by data transmission, and GAP represents the gap between adjacent PRBs in the interlace; [0080] The method of claim 1 or 2, wherein x represents the amount of PRBs in the interlace.

4. Sending the feedback information includes: sending the feedback information over Q PRBs in a first interlace, where Q is a positive integer; [0090] or [0010] 4. The method of claim 3, wherein the interlaces include the first interlace. 【Request 5】 【Number 11】 The method of claim 4 , wherein the number of PRBs included in the first interlace is greater than Q.

6. If Q<X, the method further comprises:

6. The method of claim 5, further comprising: sending the feedback information over PRBs other than the Q PRBs in the first interlace, where X indicates an amount of PRBs included in the first interlace.

7. The upper limit P satisfies the following relationship: ##EQU00012## or ##EQU00013## or ##EQU14## 。 L represents the upper limit of the amount of transmission, ##EQU00015## represents the amount of PRBs in the bandwidth occupied by data transmission, and GAP represents the gap between adjacent PRBs in the interlace; ##EQU00016## The method of claim 1 or 2, wherein x represents the amount of PRBs in the interlace.

8. Sending the feedback information includes: sending the feedback information over R PRBs in a second interlace; 8. The method of claim 7, wherein R is a positive integer, the R PRBs include at least a PRB having a highest frequency band and a PRB having a lowest frequency band in the second interlace, and the interlace includes the second interlace.

9. The upper limit P satisfies the following relationship: ##EQU00017## or [0018] N ｉｎｔｅｒｌａｃｅ The method of claim 1 or 2, wherein ∇x represents an amount of interlaces available for the feedback channel and L represents the upper limit on the amount of transmission.

10. 10. The method of claim 9, wherein sending the feedback information includes sending the feedback information over a PRB having a highest frequency band and a PRB having a lowest frequency band in a first interlace.

11. The value range of M satisfies the following conditions: 2 Ｍ－１ ≦N ＣＳ 。 N ＣＳ 11. The method of claim 1, wherein σ represents an upper limit on the amount of available sequence pairs in the feedback channel, each sequence pair including two sequences.

12. The method of claim 1 , further comprising receiving an indication information, the indication information indicating an upper limit for M.

13. The method of claim 12 , wherein the indication information further indicates time domain end positions of the N TBs.

14. The sequence pair is determined based on M-1 pieces of feedback information corresponding to M-1 TBs among the M TBs, and the sequence pair is used to convey the feedback information of the M-1 TBs; 14. The method of claim 1, wherein the sequence is determined based on feedback information other than the M-1 pieces of feedback information among M pieces of feedback information corresponding to the M TBs, the sequence is used to convey the feedback information other than the M-1 pieces of feedback information among the M pieces of feedback information, and the sequence pair includes the sequence.

15. 14. The method of claim 1, wherein the sequence is determined based on M pieces of feedback information corresponding to the M TBs, and the sequence is used to convey the M pieces of feedback information.

16. The sequence pair is determined based on the following formula: (P ＩＤ +M ＩＤ +k’)mod N ＣＳ 。 P ＩＤ represents a physical layer source identifier, and M ＩＤ represents a parameter related to a spreading type, k′ is a parameter related to the M−1 pieces of feedback information among the M pieces of feedback information, and N ＣＳ The method of claim 14 , wherein σ represents an amount of available sequence pairs in the feedback channel, and mod represents a modulo operator.

17. The sequence is determined based on the following formula: [0019] and [0020] P ＩＤ represents a physical layer source identifier, and M ＩＤ represents a parameter related to a spreading type, k is a parameter related to the M pieces of feedback information, ##EQU00021## represents the amount of available sequences of the feedback channel; [0022] The method of claim 15, wherein a represents an amount of available PRBs of the feedback channel, and b relates to an amount of sequences used in one PRB.

18. the amount of TBs that fail to be decoded among the N TBs is S; 18. The method of claim 1, wherein when S≧P, the M TBs are P TBs that failed to be decoded in the N TBs and the feedback information corresponding to the M TBs is a NACK for the P TBs, or when S<P, the M TBs include the S TBs and the feedback information corresponding to the M TBs includes a NACK for the S TBs.

19. 18. The method of claim 1, wherein if all of the N TBs are successfully decoded, the M TBs are the last TBs in the N TBs, and the feedback information corresponding to the M TBs is an ACK for the last TB.

20. 1. A method for transmitting data, the method comprising: sending, by a transmitter device, N transport blocks TB, where N is a positive integer; receiving feedback information for M TBs of the N TBs over interlaces, where M is a positive integer, M is less than or equal to N, and M is less than or equal to an upper limit P of an amount of feedback information sent by a receiver device, where P is determined based on an upper limit of an amount of transmission and a parameter of the interlace, where P is a positive integer; The method includes:

21. Sending the feedback information includes: sending the feedback information over Q PRBs in a first interlace, where Q is a positive integer; [0023] or [0024] and the interlaces include the first interlace.

21. The method of claim 20, comprising:

22. If Q<X, the method further comprises:

22. The method of claim 21, further comprising: sending the feedback information over PRBs other than the Q PRBs in the first interlace, where X indicates an amount of PRBs included in the first interlace.

23. Sending the feedback information includes: sending the feedback information over R PRBs in a second interlace, 23. The method of claim 20, wherein R is a positive integer, the R PRBs include at least a PRB having a highest frequency band and a PRB having a lowest frequency band in the second interlace, and the interlace includes the second interlace.

24. The method comprises:

24. The method of any one of claims 20 to 23, further comprising receiving an indication information, the indication information indicating an upper limit for M.

25. A communications device, comprising: a memory, a processor, and a transceiver; the memory is configured to store computer instructions; the transceiver is configured to transmit and receive information; The processor is coupled to the memory and configured to execute the method of any one of claims 1 to 19 by invoking the computer instructions in the memory and using the transceiver, or to execute the method of any one of claims 20 to 24.

26. 25. A computer-readable storage medium storing computer-executable instructions which, when invoked by a computer, perform the method of any one of claims 1 to 19 or the method of any one of claims 20 to 24.

27. A computer program product comprising instructions which, when executed on a computer, perform the method according to any one of claims 1 to 19 or the method according to any one of claims 20 to 24.

28. A chip coupled to a memory and configured to read and execute program instructions stored in the memory to perform a method according to any one of claims 1 to 19 or a method according to any one of claims 20 to 24.

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