Link identifier indication method, transceive capability indication method, and related device
A link identifier indication method includes: A multi-link device working on a plurality of links sends a radio frame, where the radio frame includes link information of at least one link in the plurality of links, and link information of one link is used to indicate the link and corresponds to a link identifier of the link; a receiving device that receives the radio frame may determine the link identifier of the link corresponding to the link information, so that in communication of the multi-link device, a link can be identified by using the link identifier.
1. A method implemented by a first multi-link device and comprising:
supporting a plurality of links comprising a first link;
generating a radio frame comprising link information of the first link, wherein the link information indicates the first link and corresponds to a link identifier of the first link, wherein the radio frame further comprises a multi-band element, wherein the multi-band element comprises the link information, a multi-band control field, and a multi-band connection capability field, wherein the multi-band control field comprises a multi-link indexing present field, and wherein the multi-link indexing present field indicates whether the link identifier exists in the multi-band element; and
sending the radio frame.
2. The method of claim 1 , wherein the multi-link indexing field comprises the link identifier when the multi-link indexing present field indicates that the multi-link indexing field exists in the multi-band element.
3. The method of claim 1 , wherein the multi-band element further comprises a pairwise cipher suite list field, wherein the pairwise cipher suite list field comprises a suite selector field, wherein the suite selector field comprises a manufacturer identifier subfield and a suite type subfield, and wherein the suite type subfield comprises the link identifier when the manufacturer identifier subfield has a first value.
4. The method of claim 1 , wherein the multi-band element further comprises a multi-band connection capability field, and wherein a reserved bit in the multi-band connection capability field comprises the link identifier when the multi-link indexing present field indicates that the link identifier exists in the multi-band element.
5. The method of claim 1 , and-wherein a sequence of the multi-band element is in a one-to-one correspondence with the link identifier.
6. The method of claim 1 , wherein the multi-band element further comprises a multi-link indexing allocation field, and wherein the multi-link indexing allocation field comprises the link identifier.
7. The method of claim 1 , further comprising sending, after sending the radio frame, a multi-link indexing element comprising a multi-link indexing information field, wherein the multi-link indexing information field comprises the link identifier or a bitmap of the first link, and wherein the bitmap indicates whether the first link is selected.
8. The method of claim 1 , wherein the link information comprises a band identifier field, an operating class field, and a channel number.
9. A method implemented by a receiving device and comprising:
receiving, from a first multi-link device supporting a plurality of links, a radio frame comprising link information of a first link of the links, wherein the link information indicates the first link and corresponds to a link identifier of the first link, wherein the radio frame further comprises a multi-band element, wherein the multi-band element comprises the link information, a multi-band control field, and a multi-band connection capability field, wherein the multi-band control field comprises a multi-link indexing present field, and wherein the multi-link indexing present field indicates whether the link identifier exists in the multi-band element; and
parsing the radio frame to obtain the link information and the link identifier.
10. The method of claim 9 , and wherein the multi-link indexing field comprises the link identifier when the multi-link indexing present field indicates that the multi-link indexing field exists in the multi-band element.
11. The method of claim 9 , wherein the multi-band element further comprises pairwise cipher suite list field, wherein the pairwise cipher suite list field comprises a suite selector field, wherein the suite selector field comprises a manufacturer identifier subfield and a suite type subfield, and wherein the suite type subfield comprises the link identifier when the manufacturer identifier subfield has a first value.
12. The method of claim 9 , wherein the multi-band element further comprises a multi-band connection capability field, and wherein a reserved bit in the multi-band connection capability field comprises the link identifier when the multi-link indexing present field indicates that the link identifier exists in the multi-band element.
13. The method of claim 9 , and-wherein a sequence of the multi-band element is in a one-to-one correspondence with the link identifier.
14. The method of claim 9 , wherein the multi-band element further comprises a multi-link indexing allocation field, and wherein the multi-link indexing allocation field comprises the link identifier.
15. The method of claim 9 , further comprising receiving, from the first multi-link device after receiving the radio frame, a multi-link indexing element comprising a multi-link indexing information field, wherein the multi-link indexing information field comprises the link identifier or a bitmap of the first link, and wherein the bitmap indicates whether the first link is selected.
16. The method of claim 9 , wherein the link information comprises a band identifier field, an operating class field, and a channel number.
17. A first multi-link device comprising:
a memory configured to store instructions; and
a processor coupled to the memory and configured to execute the instructions to cause the first multi-link device to:
support a plurality of links comprising a first link;
generate a radio frame comprising link information of the first link, wherein the link information indicates the first link and corresponds to a link identifier of the first link, wherein the radio frame further comprises a multi-band element, wherein the multi-band element comprises the link information, a multi-band control field, and a multi-band connection capability field, wherein the multi-band control field comprises a multi-link indexing present field, and wherein the multi-link indexing present field indicates whether the link identifier exists in the multi-band element; and
send the radio frame.
18. The first multi-link device of claim 17 , and wherein the multi-link indexing field comprises the link identifier when the multi-link indexing present field indicates that the multi-link indexing field exists in the multi-band element.
19. The first multi-link device of claim 17 , wherein the multi-band element further comprises a pairwise cipher suite list field, wherein the pairwise cipher suite list field comprises a suite selector field, wherein the suite selector field comprises a manufacturer identifier subfield and a suite type subfield, and wherein the suite type subfield comprises the link identifier when the manufacturer identifier subfield has a first value.
20. The first multi-link device of claim 17 , wherein the multi-band element further comprises a multi-band connection capability field, and wherein a reserved bit in the multi-band connection capability field comprises the link identifier when the multi-link indexing present field indicates that the link identifier exists in the multi-band element.