# US 2024/0205997 A1 · Methods and apparatuses for multi-link communication > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2024/0205997 A1 - Document ID: US20240205997A1 - Status: Published application - Kind: A1 - Application number: 18/555,644 - Filed: 2021-04-16 - Published: 2024-06-20 - Earliest claimed: 2021-04-16 - Assignees: Beijing Xiaomi Mobile Software Co., Ltd. - Applicants: Beijing Xiaomi Mobile Software Co., Ltd. - Inventors: Xianddong DONG - Web page: https://patentgrep.com/patent/US20240205997A1 ## CPC - H04W 76/15: Setup of multiple wireless link connections - H04W 72/04: Wireless resource allocation - H04W 76/11: Allocation or use of connection identifiers - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A method for multi-link communication includes: determining a first message frame, wherein the first message frame includes first identifier information configured to identify spatial streams used for a transmitting operation, and second identifier information configured to identify spatial streams used for a receiving operation, and the transmitting operation and the receiving operation are performed simultaneously in at least one pair of links supporting simultaneous transmitting and receiving functionality; and transmitting the first message frame. ## Claims ### Claim 1 A method for multi-link communication, comprising: determining a first message frame, wherein the first message frame comprises first identifier information configured to identify spatial streams used for a transmitting operation, and second identifier information configured to identify spatial streams used for a receiving operation, and the transmitting operation and the receiving operation are performed simultaneously in at least one pair of links supporting simultaneous transmitting and receiving functionality; and transmitting the first message frame. ### Claim 2 (depends on 1) The method of claim 1, wherein the spatial streams used for the transmitting operation identified by the first identifier information does not overlap with the spatial streams used for the receiving operation identified by the second identifier information. ### Claim 3 (depends on 1) The method of claim 1, wherein the first identifier information and the second identifier information each comprise a bitmap corresponding to all supported spatial streams. ### Claim 4 (depends on 1) The method of claim 1, wherein the first identifier information and the second identifier information identify the spatial streams used for the transmitting operation and the spatial streams used for the receiving operation, respectively, by two parts of bits, wherein a first part in the two parts of bits identifies a starting spatial stream for the transmitting operation or a starting spatial stream for the receiving operation, and a second part in the two parts of bits identifies a number of the spatial streams used for the transmitting operation or a number of the spatial streams used for the receiving operation. ### Claim 5 (depends on 1) The method of claim 1, wherein the at least one pair of links comprises at least two pairs of links, wherein the first message frame further comprises a link identifier for each of the at least two pairs of links. ### Claim 6 (depends on 5) The method of claim 5, wherein the first message frame comprises a plurality of pieces of the first identifier information and a plurality of pieces of the second identifier information, wherein the link identifier for each of the at least two pairs of links is mapped to a corresponding first identifier information and a corresponding second identifier information in mapping of the plurality of pieces of the first identifier information and the plurality of pieces of the second identifier information. ### Claim 7 (depends on 6) The method of claim 6, wherein a number of spatial streams identified by each of the plurality of pieces of the first identifier information and a number of spatial streams identified by each of the plurality of pieces of the second identifier information are both less than a maximum number of spatial streams. ### Claim 8 (depends on 6) The method of claim 6, wherein a sum of a number of spatial streams identified by the plurality of pieces of the first identifier information and a number of spatial streams identified by the plurality of pieces of the second identifier information is less than a maximum number of spatial streams. ### Claim 9 A method for multi-link communication, comprising: receiving a first message frame, wherein the first message frame comprises first identifier information configured to identify spatial streams used for a transmitting operation, and second identifier information configured to identify spatial streams used for a receiving operation, and the transmitting operation and the receiving operation are performed simultaneously in at least one pair of links supporting simultaneous transmitting and receiving functionality; and performing a communication operation based on the first message frame. ### Claim 10 (depends on 9) The method of claim 9, wherein the spatial streams used for the transmitting operation identified by the first identifier information does not overlap with the spatial streams used for the receiving operation identified by the second identifier information. ### Claim 11 (depends on 9) The method of claim 9, wherein the first identifier information and the second identifier information each comprise a bitmap corresponding to all supported spatial streams. ### Claim 12 (depends on 9) The method of claim 9, wherein the first identifier information and the second identifier information identify the spatial streams used for the transmitting operation and the spatial streams used for the receiving operation, respectively, by two parts of bits, wherein a first part in the two parts of bits identifies a starting spatial stream for the transmitting operation or a starting spatial stream for the receiving operation, and a second part in the two parts of bits identifies a number of the spatial streams used for the transmitting operation or a number of the spatial streams used for the receiving operation. ### Claim 13 (depends on 9) The method of claim 9, wherein the at least one pair of links comprises at least two pairs of links, wherein the first message frame further comprises a link identifier for each of the at least two pairs of links. ### Claim 14 (depends on 13) The method of claim 13, wherein the first message frame comprises a plurality of pieces of the first identifier information and a plurality of pieces of the second identifier information, wherein the link identifier for each of the at least two pairs of links is mapped to a corresponding first identifier information and a corresponding second identifier information in mapping of the plurality of pieces of the first identifier information and the plurality of pieces of the second identifier information. ### Claim 15 (depends on 14) The method of claim 14, wherein a number of spatial streams identified by each of the plurality of pieces of the first identifier information and a number of spatial streams identified by each of the plurality of pieces of the second identifier information are both less than a maximum number of spatial streams. ### Claim 16 (depends on 14) The method of claim 14, wherein a sum of a number of spatial streams identified by the plurality of pieces of the first identifier information and a number of spatial streams identified by the plurality of pieces of the second identifier information is less than a maximum number of spatial streams. ### Claim at position 17 -18. (canceled) ### Claim 19 An electronic device, comprising: a processor; and a memory storing computer programs executable by the processor, wherein the processor is configured to, when executing the computer programs, perform operations comprising: determining a first message frame, wherein the first message frame comprises first identifier information configured to identify spatial streams used for a transmitting operation, and second identifier information configured to identify spatial streams used for a receiving operation, and the transmitting operation and the receiving operation are performed simultaneously in at least one pair of links supporting simultaneous transmitting and receiving functionality; and transmitting the first message frame. ### Claim 20 (depends on 1) A non-transitory computer readable storage medium, storing computer programs thereon, wherein the computer programs, when executed by a processor, cause the processor to perform the method of claim 1. ### Claim 21 (depends on 9) An electronic device, comprising: a processor; and a memory storing computer programs executable by the processor, wherein the processor is configured to, when executing the computer programs, perform the method of claim 9. ### Claim 22 (depends on 9) A non-transitory computer readable storage medium, storing computer programs thereon, wherein the computer programs, when executed by a processor, cause the processor to perform the method of claim 9.