# US 10,484,953 B2 · Wireless communication device and wireless communication method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,484,953 B2 - Document ID: US10484953B2 - Status: Granted - Kind: B2 - Application number: 15/741,618 - Filed: 2016-06-10 - Published: 2018-07-12 - Granted: 2019-11-19 - Earliest claimed: 2015-09-08 - Assignees: Sony Corporation - Applicants: Sony Corporation - Inventors: Masahito Mori; Yuichi Morioka - Web page: https://patentgrep.com/patent/US10484953B2 ## CPC - H04W 52/38: TPC being performed in particular situations - H04W 52/00: Power management {, e.g. Transmission Power Control [TPC] or power classes} - H04W 52/242: {taking into account path loss} - H04W 52/243: {taking into account interferences} - H04W 52/247: {where the output power of a terminal is based on a path parameter sent by another terminal} - H04W 52/262: {taking into account adaptive modulation and coding [AMC] scheme} - H04W 52/34: TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading - 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) ## Abstract [Object] To provide a mechanism capable of improving use efficiency of communication resources during a transmission period of a wireless communication device belonging to another wireless communication network. [Solution] A wireless communication device including: a communication unit configured to receive a physical layer (PHY) header including modulation scheme information from a first wireless communication device belonging to a first wireless communication network different from a second wireless communication network to which a self-device belongs; and a control unit configured to control transmission power on a basis of information obtained in reception of the PHY header, and a wireless communication method. ## Claims ### Claim 1 A wireless communication device comprising: circuitry configured to receive a physical layer (PHY) header including modulation scheme information from a first wireless communication device belonging to a first wireless communication network different from a second wireless communication network to which a self-device belongs, and control transmission power on a basis of information obtained in reception of the PHY header, wherein the PHY header includes allowance signal information in which allowance of another signal for signal reception in a first destination wireless communication device which is a destination of a frame subsequent to the PHY header is specified. ### Claim 2 (depends on 1) The wireless communication device according to claim 1, wherein the PHY header includes an identifier of a wireless communication network. ### Claim 3 (depends on 1) The wireless communication device according to claim 1, wherein the PHY header includes transmission power information in which transmission power of the first wireless communication device is specified. ### Claim 4 (depends on 1) The wireless communication device according to claim 1, wherein the allowance of the another signal for the signal reception includes a degree of interference by the another signal to be allowed or a degree of reception power of the other signal to be allowed. ### Claim 5 (depends on 1) The wireless communication device according to claim 1, wherein the circuitry is configured to decide transmission power on a basis of an attenuation amount of radio waves related to a signal that the self-device is to transmit, and the attenuation amount is estimated on the basis of the information obtained in the reception of the PHY header. ### Claim 6 (depends on 5) The wireless communication device according to claim 5, wherein the circuitry is configured to decide the transmission power on a basis of the allowance signal information and the attenuation amount. ### Claim 7 (depends on 5) The wireless communication device according to claim 5, wherein the attenuation amount is estimated on a basis of a distance between the self-device and the first destination wireless communication device, and the distance is estimated on the basis of the information obtained in the reception of the PHY header. ### Claim 8 (depends on 7) The wireless communication device according to claim 7, wherein the distance includes a difference between a distance between the first wireless communication device and the first destination wireless communication device and a distance between the self-device and the first wireless communication device. ### Claim 9 (depends on 7) The wireless communication device according to claim 7, wherein, in a case in which a signal is not received from the first destination wireless communication device, the distance includes a distance between the first wireless communication device and the first destination wireless communication device. ### Claim 10 (depends on 7) The wireless communication device according to claim 7, wherein, in a case in which a signal is received from the first destination wireless communication device, the distance includes the distance between the self-device and the first destination wireless communication device which is estimated on a basis of reception of the signal from the first destination wireless communication device. ### Claim 11 (depends on 5) The wireless communication device according to claim 5, wherein the information obtained in the reception of the PHY header and used to control the transmission power includes at least one of the modulation scheme information, transmission power information, and the allowance signal information included in the PHY header and reception signal strength in regard to the PHY header. ### Claim 12 (depends on 5) The wireless communication device according to claim 5, wherein, in a case in which transmission power requested from a second destination wireless communication device which is a destination of a signal that the self-device is to transmit is equal to or less than the transmission power decided by the circuitry, the circuitry transmits the signal with the requested transmission power. ### Claim 13 (depends on 12) The wireless communication device according to claim 12, wherein transmission of the signal with the requested transmission power includes transmission of a signal during a transmission stop time set in reception of a signal from the first wireless communication device. ### Claim 14 A wireless communication device comprising: circuitry configured to transmit a physical layer (PHY) header including modulation scheme information, the PHY header being used to control transmission power in a second wireless communication device belonging to a second wireless communication network different from a first wireless communication network to which a self-device belongs, and include in the PHY header allowance signal information in which allowance of another signal for signal reception in a first destination wireless communication device which is a destination of a frame subsequent to the PHY header is specified. ### Claim 15 A wireless communication method comprising: receiving, at a receiver, a physical layer (PHY) header including modulation scheme information from a first wireless communication device belonging to a first wireless communication network different from a second wireless communication network to which a self-device belongs; and controlling, with circuitry, transmission power on a basis of information obtained in reception of the PHY header, wherein the PHY header includes allowance signal information which allowance of another signal for signal reception in a first destination wireless communication device which is a destination of a frame subsequent to the PHY header is specified.