# US 12,010,725 B2 · Wireless station and communication method for determining transmission to another wireless station in a cell in view of an interference cell > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,010,725 B2 - Document ID: US12010725B2 - Status: Granted - Kind: B2 - Application number: 18/356,000 - Filed: 2023-07-20 - Published: 2024-01-18 - Granted: 2024-06-11 - Earliest claimed: 2016-05-13 - Assignees: Panasonic Intellectual Property Corporation of America - Applicants: Panasonic Intellectual Property Corporation of America - Inventors: Tomoya Nunome; Takashi Iwai; Yoshio Urabe - Web page: https://patentgrep.com/patent/US12010725B2 ## CPC - H04W 74/0816: with collision avoidance - H04W 74/006: {in the downlink, i.e. towards the terminal} - H04W 74/08: Non-scheduled access, e.g. ALOHA (hybrid access H04W74/02) - H04W 84/12: WLAN [Wireless Local Area Networks] - H04W 52/245: {taking into account received signal strength} - H04W 74/06: using polling - Y02D 30/70: in wireless communication networks - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract A wireless station that belongs to a communication cell includes a receiver which, in operation, receives a trigger frame transmitted from an access point that belongs to an interference cell and a controller which, in operation, determines, based on at least one parameter included in the trigger frame and reception power value of the trigger frame received at the wireless station, whether the wireless station is allowed to transmit to other wireless station that belongs to the communication cell, wherein the at least one parameter includes a value set based on transmit power value of the trigger frame transmitted from the access point. ## Claims ### Claim 1 An integrated circuit for a first wireless station that belongs to a Basic Service Set (BSS), the integrated circuit comprising, at least one input, and control circuitry, which, in operation, controls: receiving, by the at least one input, a trigger frame transmitted from an Access Point (AP) that belongs to an overlapping BSS (OBSS), the trigger frame soliciting uplink multiuser signals from a plurality of wireless stations that belong to the OBSS; and transmitting a signal to a second wireless station that belongs to the BSS in spatial reuse operation while the uplink multiuser signals are being transmitted, wherein the spatial reuse operation is restricted based on a class of the first wireless station, the class indicating Received Signal Strength Indicator (RSSI) measurement precision. ### Claim 2 (depends on 1) The integrated circuit according to claim 1, wherein the control circuitry, in operation, determines whether the first wireless station performs the spatial reuse operation based on the class of the first wireless station. ### Claim 3 (depends on 1) The integrated circuit according to claim 1, wherein the control circuitry, in operation, decodes the received trigger frame and extracts a plurality of parameters encoded and included in the trigger frame. ### Claim 4 (depends on 3) The integrated circuit according to claim 3, wherein the control circuitry, in operation, determines whether the first wireless station performs the spatial reuse operation based on the plurality of parameters. ### Claim 5 (depends on 4) The integrated circuit according to claim 4, wherein one of the plurality of parameters is a target RSSI indicating a target reception power value of the uplink multiuser signals to be measured at the AP, and the control circuitry, in operation, determines whether the first wireless station performs the spatial reuse operation based on the target RSSI. ### Claim 6 (depends on 4) The integrated circuit according to claim 4, wherein one of the plurality of parameters is an AP transmit power indicating a transmit power of the trigger frame, and the control circuitry, in operation, determines whether the first wireless station performs the spatial reuse operation based on the AP transmit power. ### Claim 7 (depends on 4) The integrated circuit according to claim 4, wherein one of the plurality of parameters is an allowable interference level, and the control circuitry, in operation, determines whether the first wireless station performs the spatial reuse operation based on the allowable interference level. ### Claim 8 (depends on 4) The integrated circuit according to claim 4, wherein the control circuitry, in operation, adjust a transmit power of the signal based on the plurality of parameters. ### Claim 9 (depends on 4) The integrated circuit according to claim 4, wherein the control circuitry, in operation, sets a period during which the spatial reuse operation is allowed. ### Claim 10 (depends on 4) The integrated circuit according to claim 4, wherein the control circuitry, in operation, determines whether the first wireless station performs the spatial reuse operation based on the class of the first wireless station. ### Claim 11 An integrated circuit for a first wireless station that belongs to a Basic Service Set (BSS), the integrated circuit comprising, at least one input, and controller circuitry, which, in operation, controls: receiving, by the at least one input, a signal transmitted from another wireless station that belongs to an overlapping BSS (OBSS); and transmitting a transmission signal to a second wireless station that belongs to the BSS in spatial reuse operation while wireless communication of the OBSS is in operation, wherein the spatial reuse operation is restricted based on the signal and a class of the first wireless station, the class indicating Received Signal Strength Indicator (RSSI) measurement precision.