# US 11,445,521 B2 · Systems and methods for latency sensitive links > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,445,521 B2 - Document ID: US11445521B2 - Status: Granted - Kind: B2 - Application number: 17/121,200 - Filed: 2020-12-14 - Published: 2021-09-16 - Granted: 2022-09-13 - Earliest claimed: 2020-03-13 - Assignees: Meta Platforms Technologies, LLC - Applicants: Meta Platforms Technologies, LLC - Inventors: Chunyu Hu - Web page: https://patentgrep.com/patent/US11445521B2 ## CPC - H04W 72/543: based on requested quality, e.g. QoS - H04L 47/24: Traffic characterised by specific attributes, e.g. priority or QoS - H04W 28/02: Traffic management, e.g. flow control or congestion control - H04W 48/06: based on traffic conditions - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/51: based on terminal or device properties - H04W 72/56: based on priority criteria - H04W 74/0875: {with assigned priorities based access} - H04L 47/267: sent by the destination endpoint (network streaming of media packets with control of the source by the destination H04L65/613) - H04W 74/0816: with collision avoidance - 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) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract Disclosed herein includes a system, a method, and a device for providing latency sensitive links. A wireless device can receive, from a wireless node, an advertisement message indicating a set of wireless local area network (WLAN) links that support one or more defined latency requirements, a capability of the wireless node to support the set of WLAN links, a plurality of parameters, an operating mode, and a status for the set of WLAN links. The wireless device can send, to the wireless node responsive to the advertisement message, a request to access a first link of the set of WLAN links. The request can indicate a capability of the wireless device to interoperate with the wireless node to use the first link. The wireless device can access the first link of the set of WLAN links if the wireless node accepts the request to access the first link. ## Claims ### Claim 1 A method comprising: receiving, by a wireless device from a wireless node, an advertisement message indicating a set of wireless local area network (WLAN) links that support one or more defined latency requirements, a capability of the wireless node to support the set of WLAN links, a plurality of parameters for the set of WLAN links, an operating mode for the set of WLAN links, and a status for the set of WLAN links; sending, by the wireless device to the wireless node responsive to the advertisement message, a request to access a first link of the set of WLAN links, the request indicating a capability of the wireless device to interoperate with the wireless node to use the first link, and accessing, by the wireless device, the first link of the set of WLAN links if the wireless node accepts the request to access the first link. ### Claim 2 (depends on 1) The method of claim 1, wherein the capability of the wireless node includes at least one of: link admission, link steering or facilitating channel access, of one or more wireless devices. ### Claim 3 (depends on 1) The method of claim 1, comprising: receiving, by the wireless device from the wireless node, a response accepting or denying the wireless device access to the first link, wherein the response is based on at least a condition of network traffic associated with the wireless node. ### Claim 4 (depends on 1) The method of claim 1, comprising: receiving, by the wireless device from the wireless node, an indication of a second link to transfer at least a portion of traffic of the wireless device, from the first link to the second link, wherein the indication is responsive to a condition of network traffic associated with the wireless node; and accessing, by the wireless device responsive to the indication, the second link to communicate the at least a portion of the traffic of the wireless device. ### Claim 5 (depends on 1) The method of claim 1, comprising: receiving, by the wireless device from the wireless node, an indication of a first plurality of parameters of the plurality of parameters for a plurality of time slots for the set of WLAN links available for prioritized access; and accessing, by the wireless device, the first link during a first time slot of the plurality of time slots according to the first plurality of parameters. ### Claim 6 (depends on 1) The method of claim 1, wherein the advertisement message includes at least one of: a beacon signal, a probe response or an action frame. ### Claim 7 A wireless device comprising: one or more processors configured to: receive, from a wireless node, an advertisement message indicating a set of wireless local area network (WLAN) links that support one or more defined latency requirements, a capability of the wireless node to support the set of WLAN links, a plurality of parameters for the set of WLAN links, an operating mode for the set of WLAN links, and a status for the set of WLAN links; send, to the wireless node responsive to the advertisement message, a request to access a first link of the set of WLAN links, the request indicating a capability of the wireless device to interoperate with the wireless node to use the first link, and access the first link of the set of WLAN links if the wireless node accepts the request to access the first link. ### Claim 8 (depends on 7) The wireless device of claim 7, wherein the capability of the wireless node includes at least one of: link admission, link steering or facilitating channel access, of one or more wireless devices. ### Claim 9 (depends on 7) The wireless device of claim 7, wherein the one or more processors are further configured to: receive, from the wireless node, an indication of a second link to transfer at least a portion of traffic of the wireless device, from the first link to the second link, wherein the indication is responsive to a condition of network traffic associated with the wireless node; and access, responsive to the indication, the second link to communicate the at least a portion of the traffic of the wireless device. ### Claim 10 (depends on 7) The wireless device of claim 7, wherein the one or more processors are further configured to: receive, from the wireless node, a response accepting or denying the wireless device access to the first link, wherein the response is based on at least a condition of network traffic associated with the wireless node. ### Claim 11 (depends on 7) The wireless device of claim 7, wherein the one or more processors are further configured to: receive, from the wireless node, an indication of a first plurality of parameters of the plurality of parameters for a plurality of time slots for the set of WLAN links available for prioritized access; and access the first link during a first time slot of the plurality of time slots according to the first plurality of parameters. ### Claim 12 (depends on 7) The wireless device of claim 7, wherein the advertisement message includes at least one of: a beacon signal, a probe response or an action frame. ### Claim 13 A method comprising: configuring, by a wireless node, a set of wireless local area network (WLAN) links to support one or more defined latency requirements; transmitting, by the wireless node to a plurality of wireless devices, an advertisement message indicating the set of WLAN links to support the one or more defined latency requirements, a capability of the wireless node to support the set of WLAN links, a plurality of parameters for the set of WLAN links, an operating mode for the set of WLAN links, and a status for the set of WLAN links; and receiving, by the wireless node from a first wireless device of the plurality of wireless devices responsive to the advertisement message, a request to access a first link of the set of WLAN links, the request indicating a capability of the wireless device to interoperate with the wireless node to use the first link, wherein the wireless device accesses the first link of the set of WLAN links if the wireless node accepts the request to access the first link. ### Claim 14 (depends on 13) The method of claim 13, wherein the capability of the wireless node includes at least one of: link admission, link steering or facilitating channel access, of one or more wireless devices. ### Claim 15 (depends on 13) The method of claim 13, comprising: transmitting, by the wireless node to the first wireless device, a response accepting or denying the wireless device access to the first link, wherein the response is based on at least a condition of network traffic associated with the wireless node. ### Claim 16 (depends on 13) The method of claim 13, comprising: transmitting, by the wireless node to the wireless device, an indication of a second link to transfer at least a portion of traffic of the wireless device, from the first link to the second link, responsive to a condition of network traffic associated with the wireless node, wherein the wireless device accesses, responsive to the indication, the second link to communicate the at least a portion of the traffic of the wireless device. ### Claim 17 (depends on 13) The method of claim 13, comprising determining, by the wireless node, a condition of network traffic of the set of WLAN links; determining, by the wireless node, that the wireless device is accessing the first link and a second link of the set of WLAN links; and determining, by the wireless node, not to transfer at least a portion of traffic of the wireless device from the first link to the second link, responsive to determining that the wireless device is accessing the second link. ### Claim 18 (depends on 13) The method of claim 13, comprising: configuring, by the wireless node, a time interval into a plurality of time slots for the set of WLAN links having a first plurality of parameters of the plurality of parameters for prioritized access; and transmitting, by the wireless node to the wireless device, an indication of the first plurality of parameters for the plurality of time slots for the set of WLAN links, wherein the wireless device accesses the first link during a first time slot of the plurality of time slots according to the first plurality of parameters. ### Claim 19 (depends on 13) The method of claim 13, wherein the advertisement message includes at least one of: a beacon signal, a probe response or an action frame. ### Claim 20 (depends on 13) A wireless node comprising: one or more processors configured to implement the method of claim 13.