# US 12,010,762 B2 · Wireless communication method using BSS identifier and wireless communication terminal using same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,010,762 B2 - Document ID: US12010762B2 - Status: Granted - Kind: B2 - Application number: 17/670,424 - Filed: 2022-02-12 - Published: 2022-05-26 - Granted: 2024-06-11 - Earliest claimed: 2017-04-14 - Assignees: Wilus Institute of Standards and Technology Inc.; SK Telecom Co., Ltd. - Applicants: Wilus Institute of Standards and Technology Inc.; SK Telecom Co., Ltd. - Inventors: Geonjung Ko; Woojin Ahn; Juhyung Son; Jinsam Kwak - Web page: https://patentgrep.com/patent/US12010762B2 ## CPC - H04W 74/06: using polling - H04W 80/08: Upper layer protocols {(network arrangements or communication protocols for networked applications H04L67/00)} - H04W 52/02: Power saving arrangements - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/1268: of uplink data flows - H04W 74/0866: {using a dedicated channel for access} - H04W 76/11: Allocation or use of connection identifiers - H04W 84/12: WLAN [Wireless Local Area Networks] - 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 Provided is a wireless communication terminal that wirelessly communicates. The wireless communication terminal includes a transceiver configured to transmit and receive wireless signals; and a processor configured to process the wireless signals. The processor is configured to: generate a trigger frame for triggering uplink transmission based random access of at least one wireless communication terminal, and insert the trigger frame into a physical layer protocol data unit (PPDU) to transmit the PPDU. ## Claims ### Claim 1 A wireless communication terminal wirelessly communicating with a base wireless communication terminal, the wireless communication terminal comprising: a transceiver configured to transmit and receive wireless signals; and a processor configured to process the wireless signals, wherein the processor is configured to: receive a physical layer protocol data unit (PPDU) including a trigger frame for triggering transmission to the base wireless communication terminal, wherein the trigger frame includes an identifier which identifies a wireless communication terminal which is triggered by the trigger frame, and the trigger frame indicates a resource unit (RU) which is allocated to the wireless communication terminal, when a format of the PPDU including the trigger frame is a PPDU format in which at least one of physical layer signaling fields including a field for indicating a Basic Service Set (BSS) color is included, set a value of a BSS color to be indicated by a trigger-based PPDU based on the BSS color indicated by the field, when the format of the PPDU including the trigger frame is a PPDU format in which any physical layer signaling field including the field for indicating the BSS color is not included, set the value of the BSS color to be indicated by the trigger-based PPDU according to an active BSS color of the wireless communication terminal, and transmit the trigger-based PPDU based on the trigger frame, wherein the active BSS color is a BSS color actually used by the wireless communication terminal and set by an Operation element, wherein when the wireless communication terminal receives information on a BSS color change from the base wireless communication terminal and a BSS color change time point indicated by the information on the BSS color change is reached, the active BSS color is set to a value of a BSS color indicated by the information on the BSS color change, and wherein the BSS color is one of identifiers identifying a BSS. ### Claim 2 (depends on 1) The wireless communication terminal of claim 1, wherein the BSS color change time point is set based on a target beacon transmission time transmitted by the base wireless communication terminal. ### Claim 3 (depends on 1) The wireless communication terminal of claim 1, wherein if the PPDU indicates a partial Basic Service Set (BSS) color using a Partial Association ID (AID) field, the processor determines whether the PPDU is an Intra-BSS PPDU or an Inter-BSS PPDU based on the partial BSS color when the value of the partial AID field is non-zero, wherein the partial AID field is a signaling field used to indicate a value obtained based on an AID value. ### Claim 4 A method of operating a wireless communication terminal wirelessly communicating with a base wireless communication terminal, the method comprising: receiving a physical layer protocol data unit (PPDU) including a trigger frame for triggering transmission to the base wireless communication terminal, wherein the trigger frame includes an identifier which identifies a wireless communication terminal which is triggered by the trigger frame, and the trigger frame indicates a resource unit (RU) which is allocated to the wireless communication terminal, when a format of the PPDU including the trigger frame is a PPDU format in which at least one of physical layer signaling fields including a field for indicating a Basic Service Set (BSS) color is included, setting a value of a BSS color to be indicated by a trigger-based PPDU based on the BSS color indicated by the field, when the format of the PPDU including the trigger frame is a PPDU format in which any physical layer signaling field including the field for indicating the BSS color is not included, setting the value of the BSS color to be indicated by the trigger-based PPDU according to an active BSS color of the wireless communication terminal, and transmitting the trigger-based PPDU based on the trigger frame, wherein the active BSS color is a BSS color actually used by the wireless communication terminal and set by an Operation element, wherein when the wireless communication terminal receives information on a BSS color change from the base wireless communication terminal and a BSS color change time point indicated by the information on the BSS color change is reached, the active BSS color is set to a value of a BSS color indicated by the information on the BSS color change, and wherein the BSS color is one of identifiers identifying a BSS.