Data transmission method, data transmission apparatus and non-transitory computer-readable storage medium for tid-to-link mapping
This application provides data transmission methods and apparatuses, to introduce a buffer status report (BSR) mechanism through multi-link (ML) cooperation, to improve performance of scheduling a station by an ML device. In an example method, a multi-link transmit end determines BSR signaling sent to a multi-link receive end, where the BSR signaling can enable the multi-link receive end to schedule a station of the multi-link transmit end over one or more links. Further, the multi-link transmit end sends the B SR signaling to the multi-link transmit end over the one or more links. This introduces a BSR mechanism through ML cooperation.
1. A data transmission method, comprising:
sending, by a multi-link transmit end, a request message to a multi-link receive end; and
receiving, by the multi-link transmit end, a response message from the multi-link receive end, wherein:
the request message and the response message are used for negotiation to set up a traffic identifier-to-link (TID-to-link) mapping relationship; and
wherein the request message comprises mapping information, the mapping information comprises a TID bitmap field and N link identifier bitmap fields, N is a positive integer, wherein a bit whose value is 1 in the TID bitmap field indicates that a TID identified by a position of the bit whose value is 1 in the TID bitmap field corresponds to one of the N link identifier bitmap fields, a bit whose value is 1 in a link identifier bitmap field indicates that a TID corresponding to the link identifier bitmap field is mapping to a link identified by a position of the bit whose value is 1 in the link identifier bitmap field.
2. The method according to claim 1 , wherein a length of each of the link identifier bitmap fields is fixed.
3. The method according to claim 1 , wherein a quantity of bits that are set to 1 in the TID bitmap field is N.
4. The method according to claim 1 , wherein the response message comprises control information, and the control information indicates that a TID-to-Link mapping is accepted.
5. The method according to claim 1 , wherein the response message comprises control information, and the control information indicates that a TID-to-Link mapping is rejected.
6. The method according to claim 1 , wherein the response message comprises control information, and the control information indicates that a TID-to-Link mapping is suggested.
7. A data transmission apparatus, comprising:
at least one processor; and
at least one memory, storing computer instructions, which when execute by the at least one processor, cause the data transmission apparatus to:
send a request message to a multi-link receive end; and
receive a response message from the multi-link receive end,
wherein the request message and the response message are used for negotiation to set up a traffic identifier-to-link (TID-to-link) mapping relationship; and
wherein the request message comprises mapping information, the mapping information comprises a TID bitmap field and N link identifier bitmap fields, N is a positive integer, wherein a bit whose value is 1 in the TID bitmap field indicates that a TID identified by a position of the bit whose value is 1 in the TID bitmap field corresponds to one of the N link identifier bitmap fields, a bit whose value is 1 in a link identifier bitmap field indicates that a TID corresponding to the link identifier bitmap field is mapping to a link identified by a position of the bit whose value is 1 in the link identifier bitmap field.
8. The data transmission apparatus according to claim 7 , wherein a length of each of the link identifier bitmap fields is fixed.
9. The data transmission apparatus according to claim 7 , wherein a quantity of bits that are set to 1 in the TID bitmap field is N.
10. The data transmission apparatus according to claim 7 , wherein the response message comprises control information, and the control information indicates that a TID-to-Link mapping is accepted.
11. The data transmission apparatus according to claim 7 , wherein the response message comprises control information, and the control information indicates that a TID-to-Link mapping is rejected.
12. The data transmission apparatus according to claim 7 , wherein the response message comprises control information, and the control information indicates that a TID-to-Link mapping is suggested.
13. A non-transitory computer-readable storage medium, comprising computer instructions, which when executed by at least one processor, cause a data transmission apparatus comprising the at least one processor to:
send a request message to a multi-link receive end; and
receive a response message from the multi-link receive end,
wherein the request message and the response message are used for negotiation to set up a traffic identifier-to-link (TID-to-link) mapping relationship; and
wherein the request message comprises mapping information, the mapping information comprises a TID bitmap field and N link identifier bitmap fields, N is a positive integer, wherein a bit whose value is 1 in the TID bitmap field indicates that a TID identified by a position of the bit whose value is 1 in the TID bitmap field corresponds to one of the N link identifier bitmap fields, a bit whose value is 1 in a link identifier bitmap field indicates that a TID corresponding to the link identifier bitmap field is mapping to a link identified by a position of the bit whose value is 1 in the link identifier bitmap field.
14. The non-transitory computer-readable storage medium according to claim 13 , wherein a length of each of the link identifier bitmap fields is fixed.
15. The non-transitory computer-readable storage medium according to claim 13 , wherein a quantity of bits that are set to 1 in the TID bitmap field is N.
16. The non-transitory computer-readable storage medium according to claim 13 , wherein the response message comprises control information, and the control information indicates that a TID-to-Link mapping is accepted.
17. The non-transitory computer-readable storage medium according to claim 13 , wherein the response message comprises control information, and the control information indicates that a TID-to-Link mapping is rejected.
18. The non-transitory computer-readable storage medium according to claim 13 , wherein the response message comprises control information, and the control information indicates that a TID-to-Link mapping is suggested.