# US 12,604,327 B2 · Communication device and communication method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,604,327 B2 - Document ID: US12604327B2 - Status: Granted - Kind: B2 - Application number: 18/250,296 - Filed: 2021-07-13 - Published: 2023-12-14 - Granted: 2026-04-14 - Earliest claimed: 2020-10-28 - Assignees: Panasonic Intellectual Property Corporation of America - Applicants: Panasonic Intellectual Property Corporation of America - Inventors: Takashi Iwai; Tomofumi Takata; Yoshio Urabe; Takayuki Nakano; Taichi Miura - Web page: https://patentgrep.com/patent/US12604327B2 ## CPC - H04W 72/232: the control data signalling from the physical layer, e.g. DCI signalling - H04W 74/006: {in the downlink, i.e. towards the terminal} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 69/22: Parsing or analysis of headers - 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 A communication device (100) comprises: a circuit (11) that sets a first value to an association ID (AID) 12 subfield of the first field of a trigger frame requesting an extremely high throughput (EHT) trigger-based (TB) physical layer protocol data unit (PPDU); and a transmitter (12) that transmits the trigger frame. The first value indicates that the first field contains information to be shared for the transmission of the EHT TB PPDU. ## Claims ### Claim 1 A communication apparatus, comprising: circuitry, which, in operation, configures a first value to an association ID (AID) 12 subfield of a first field of a trigger frame that requests an Extremely High Throughput (EHT) trigger-based (TB) physical-layer protocol data unit (PPDU), the first value indicating that the first field includes information commonly used for transmission of the EHT TB PPDU and the first field being positioned immediately after a common information field in the trigger frame; and a transmitter, which in operation, transmits the trigger frame. ### Claim 2 (depends on 1) The communication apparatus according to claim 1, wherein the first value indicates that the trigger frame includes a user information field for EHT after the first field. ### Claim 3 (depends on 1) The communication apparatus according to claim 1, wherein the first value is interpreted by a High Efficiency (HE) station (STA) as an indication that the first field is addressed to another STA. ### Claim 4 (depends on 1) The communication apparatus according to claim 1, wherein a length of the first field is equal to a length of a first user information field of the trigger frame. ### Claim 5 (depends on 1) The communication apparatus according to claim 1, wherein: the communication apparatus is an EHT access point (AP), and the circuitry does not configure the first value to an AID12 subfield of each user field that includes user-specific information addressed to an STA associated with the EHT AP. ### Claim 6 (depends on 1) The communication apparatus according to claim 1, wherein a first user information field addressed to an EHT STA is subsequent to the first field. ### Claim 7 (depends on 1) The communication apparatus according to claim 1, wherein a common information field of the trigger frame includes information on whether the first field is present in the trigger frame. ### Claim 8 (depends on 1) The communication apparatus according to claim 1, wherein: a first user information field of the trigger frame includes a resource unit (RU) allocation subfield and a first subfield, and the RU allocation subfield indicates, together with the first subfield, an RU for the transmission of the EHT TB PPDU. ### Claim 9 (depends on 1) The communication apparatus according to claim 1, wherein the trigger frame requests an HE TB PPDU by a user information field of the trigger frame. ### Claim 10 (depends on 1) The communication apparatus according to claim 1, wherein: the trigger frame includes the first field, a user information field for EHT, and a user information field for HE, and the trigger frame requests the EHT TB PPDU and an HE TB PPDU. ### Claim 11 (depends on 1) The communication apparatus according to claim 1, wherein: the first field includes version information on the first field, and the version information indicates one of an EHT version or a post-EHT version. ### Claim 12 (depends on 1) The communication apparatus according to claim 1, wherein the transmission of the EHT TB PPDU is a random access. ### Claim 13 A communication method, comprising: configuring a first value to an association ID (AID) 12 subfield of a first field of a trigger frame that requests an Extremely High Throughput (EHT) trigger-based (TB) physical-layer protocol data unit (PPDU), the first value indicating that the first field includes information commonly used for transmission of the EHT TB PPDU and the first field being positioned immediately after a common information field in the trigger frame; and transmitting the trigger frame. ### Claim 14 (depends on 1) The communication apparatus according to claim 1, wherein the first value is interpreted by a High Efficiency (HE) station (STA) as an indication that the first field is addressed to an associated STA whose AID is equal to the first value. ### Claim 15 (depends on 1) The communication apparatus according to claim 1, wherein the first value is used as an AID to be assigned to an individual station in IEEE802.11ax. ### Claim 16 (depends on 1) The communication apparatus according to claim 1, wherein the first field does not include user-specific information, but a High Efficiency (HE) station (STA) interprets the first value as an indication that the first field includes the user-specific information. ### Claim 17 (depends on 1) The communication apparatus according to claim 1, wherein the first value indicates to an EHT STA that the first field does not include user-specific information, but a High Efficiency (HE) station (STA) interprets the first value as an indication that the first field includes the user-specific information.