# US 11,310,722 B2 · Information transmission method, network device, and user equipment > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,310,722 B2 - Document ID: US11310722B2 - Status: Granted - Kind: B2 - Application number: 17/005,037 - Filed: 2020-08-27 - Published: 2021-02-18 - Granted: 2022-04-19 - Earliest claimed: 2016-06-03 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Pei Zhou; Yan Long; Xiao Han; Yingpei Lin - Web page: https://patentgrep.com/patent/US11310722B2 ## CPC - H04W 48/10: using broadcasted information - H04B 7/0617: {for beam forming} - H04L 5/0037: {Inter-user or inter-terminal allocation} - H04L 5/005: {of common pilots, i.e. pilots destined for multiple users or terminals} - H04W 16/28: using beam steering - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 48/12: using downlink control channel - H04W 84/12: WLAN [Wireless Local Area Networks] - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04B: TRANSMISSION - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract Embodiments of this application provide an information transmission method, a network device, and a user equipment. The method provided in this application includes: sending, by a network device, a broadcast frame that includes first duration information and second duration information that are of A-BFT (Association Beamforming Training); receiving a frame sent by a first user equipment in a timeslot randomly selected from a first time range; and receiving a frame sent by a second user equipment in a timeslot randomly selected from a second time range. According to the embodiments of this application, beamforming training efficiency can be improved. ## Claims ### Claim 1 A network apparatus, comprising: a processor; and an interface configured to communicate with the processor; wherein the interface is configured to send a broadcast frame, the broadcast frame comprising first duration information, second duration information, and frame quantity indication information, the frame quantity indication information being located in a frame of sector sweep (FSS) field of a beacon interval (BI) control field in the broadcast frame; wherein the first duration information is configured to indicate a first time range of association beamforming training (A-BFT) for a first user apparatus, a first timeslot being selected randomly from the first time range; wherein the second duration information is configured to indicate a second time range of A-BFT for a second user apparatus, a second timeslot being selected randomly from the second time range; wherein the first user apparatus and the second user apparatus correspond to different communications standards; and wherein a duration of the second time range is equal to or greater than a duration of the first time range; and wherein the interface is further configured to: receive a first-type frame from the first user apparatus in the first timeslot randomly selected from the first time range; and receive a second-type frame from the second user apparatus in the second timeslot randomly selected from the second time range, a transmission duration of the first-type frame being greater than a transmission duration of the second-type frame. ### Claim 2 (depends on 1) The network apparatus according to claim 1, the second-type frame being a short sector sweep (SSSW) frame. ### Claim 3 (depends on 1) The network apparatus according to claim 1, wherein the first duration information is located in an A-BFT length field of the BI control field in the broadcast frame; and wherein the second duration information is located in at least one bit in the BI control field except the A-BFT length field. ### Claim 4 (depends on 1) The network apparatus according to claim 1, wherein the frame quantity indication information is configured to indicate a frame quantity of the second-type frame; and wherein the interface is further configured to receive second-type frame with the frame quantity of the second-type frame from the second user apparatus. ### Claim 5 (depends on 4) The network apparatus as claimed in claim 4, wherein the frame quantity indication information is further configured to indicate a frame quantity of the first-type frame; and wherein the receiver is further configured to receive first-type frame with the frame quantity of the first-type frame from the first user apparatus. ### Claim 6 A second user apparatus, comprising: a processor; and an interface configured to communicate with the processor; wherein the interface is configured to receive a broadcast frame from a network apparatus, the broadcast frame comprising first duration information, second duration information, and frame quantity indication information, the frame quantity indication information being located in a frame of sector sweep (FSS) field of a beacon interval (BI) control field in the broadcast frame; wherein the first duration information is configured to indicate a first time range of association beamforming training (A-BFT) for a first user apparatus, a first timeslot being selected randomly from the first time range; wherein the second duration information is configured to indicate a second time range of A-BFT for a second user apparatus, a second timeslot being selected randomly from the second time range; wherein the first user apparatus and the second user apparatus correspond to different communications standards; wherein a duration of the second time range is equal to or greater than a duration of the first time range; wherein the processor is configured to determine the second time range and randomly select the second timeslot from the second time range; and wherein the interface is further configured to send a second-type frame to the network apparatus in the second timeslot randomly selected from the second time range, a transmission duration of a first-type frame being greater than a transmission duration of the second-type frame. ### Claim 7 (depends on 6) The second user apparatus according to claim 6, the second-type frame being a short sector sweep (SSSW) frame. ### Claim 8 (depends on 6) The second user apparatus according to claim 6, wherein the first duration information is located in an A-BFT length field of the BI control field in the broadcast frame; and wherein the second duration information is located in at least one bit in the BI control field except the A-BFT length field. ### Claim 9 (depends on 6) The second user apparatus according to claim 6, wherein the frame quantity indication information is configured to indicate a frame quantity of the second-type frame; and wherein the interface is further configured to send second-type frame with the frame quantity of the second-type frame to the network apparatus. ### Claim 10 (depends on 9) The second user apparatus as claimed in claim 9, wherein the frame quantity indication information is further configured to indicate a frame quantity of the first-type frame to be from the first user apparatus. ### Claim 11 A non-transitory computer-readable storage medium storing a computer program that, when executed, causes a computer to execute the following operations: receiving a broadcast frame from a network apparatus, the broadcast frame comprising first duration information, second duration information, and frame quantity indication information, the frame quantity indication information being located in a frame of sector sweep (FSS) field of a beacon interval (BI) control field in the broadcast frame, wherein the first duration information is configured to indicate a first time range of association beamforming training (A-BFT) for a first user apparatus, a first timeslot being selected randomly from the first time range, wherein the second duration information is configured to indicate a second time range of A-BFT for a second user apparatus, a second timeslot being selected randomly from the second time range, wherein the first user apparatus and the second user apparatus correspond to different communications standards, and wherein a duration of the second time range is equal to or greater than a duration of the first time range; determining the second time range and randomly selecting the second timeslot from the second time range; and sending a second-type frame to the network apparatus in the second timeslot randomly selected from the second time range, a transmission duration of a first-type frame being greater than a transmission duration of the second-type frame. ### Claim 12 (depends on 11) The computer-readable storage medium according to claim 11, the second-type frame being a short sector sweep (SSSW) frame. ### Claim 13 (depends on 11) The computer-readable storage medium according to claim 11, wherein the frame quantity indication information is configured to indicate a frame quantity of the second-type frame; and wherein the operations further include: sending second-type frames with the frame quantity of the second-type frame to the network apparatus. ### Claim 14 (depends on 13) The computer-readable storage medium according to claim 13, wherein the frame quantity indication information is further configured to indicate a frame quantity of the first-type frame to be from the first user apparatus.