# US 11,121,747 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 11,121,747 B2 - Document ID: US11121747B2 - Status: Granted - Kind: B2 - Application number: 16/302,675 - Filed: 2017-05-22 - Published: 2019-04-25 - Granted: 2021-09-14 - Earliest claimed: 2016-07-13 - Assignees: Sony Corporation - Applicants: Sony Corporation - Inventors: Yusuke Tanaka - Web page: https://patentgrep.com/patent/US11121747B2 ## CPC - H04B 7/0452: Multi-user MIMO systems - H02J 50/80: involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices - H04B 1/08: Constructional details, e.g. cabinet - H04W 16/28: using beam steering - H04W 68/005: {Transmission of information for alerting of incoming communication} - H04W 72/12: Wireless traffic scheduling - H04W 72/121: for groups of terminals or users - H04W 76/15: Setup of multiple wireless link connections - H04W 84/12: WLAN [Wireless Local Area Networks] - H04W 52/54: Signalisation aspects of the TPC commands, e.g. frame structure - H04W 74/006: {in the downlink, i.e. towards the terminal} - H04B: TRANSMISSION - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A wireless communication device includes: a receiving unit that receives a first signal storing first information with which precision or accuracy of transmission power is recognized; and a transmission unit that transmits a second signal regarding permission of multiple access that allows simultaneous communication with at least one first wireless communication device identified on the basis of the first information. A wireless communication device includes: a transmission unit that transmits a first signal storing first information with which precision or accuracy of transmission power is recognized; a receiving unit that receives a second signal regarding permission of multiple access that allows simultaneous communication after the transmission of the first signal; and a control unit that controls transmission of a third signal on the basis of the second signal. ## Claims ### Claim 1 A wireless communication device, comprising: processing circuitry configured to receive a first signal from a first wireless communication device, the first signal including first precision information indicating a precision of a transmission power at the first wireless communication device, and the precision of the transmission power being a difference between a setting value at the first wireless communication device and an actually measured value of the transmission power measured at the first wireless communication device; assign, based on the precision of the transmission power indicated in the first precision information, the first wireless communication device to a particular multiple access group; and transmit a second signal to the first wireless communication device, wherein the second signal includes a group notification frame which identifies the first wireless communication device in the particular multiple access group, the second signal indicates a permission of multiple access and a notification of assignment to the particular multiple access group, the permission of multiple access is based on the first precision information, and the permission of multiple access allows simultaneous communication with another wireless communication device belonging to the particular multiple access group. ### Claim 2 (depends on 1) The wireless communication device according to claim 1, wherein the first precision information indicates a grade classified in accordance with a numerical value of an error. ### Claim 3 (depends on 2) The wireless communication device according to claim 2, wherein the precision is equal to or greater than a threshold value. ### Claim 4 (depends on 3) The wireless communication device according to claim 3, wherein the processing circuitry transmits the second signal to a second wireless communication device in which a second error, between a second setting value at the second wireless communication device and a second actually measured value of transmission power measured at the second wireless communication device, is less than the threshold value, and a first communication parameter, that is different from a second communication parameter included in the second signal, is included in the first signal. ### Claim 5 (depends on 4) The wireless communication device according to claim 4, wherein the first communication parameter includes information regarding noise resistance for communication. ### Claim 6 (depends on 1) The wireless communication device according to claim 1, wherein the second signal includes a transmission permission signal indicating permission of multiple access that allows simultaneous communication. ### Claim 7 (depends on 1) The wireless communication device according to claim 1, wherein the multiple access that allows simultaneous communication includes frequency division multiple access, space division multiple access, or code division multiple access. ### Claim 8 (depends on 1) The wireless communication device according to claim 1, wherein the processing circuitry controls a destination of the second signal based on a change in connection for communication with the first wireless communication device. ### Claim 9 (depends on 1) The wireless communication device according to claim 1, wherein the processing circuitry controls a destination of the second signal based on a change in the first precision information. ### Claim 10 (depends on 1) The wireless communication device according to claim 1, wherein the processing circuitry is further configured to receive a transmission power notification signal including transmission power information, and transmit a difference notification signal including difference information regarding a difference between the transmission power information and transmission power information estimated from reception power. ### Claim 11 (depends on 10) The wireless communication device according to claim 10, wherein the processing circuitry is further configured to receive the difference notification signal, and control a destination of the second signal based on the difference information and the estimated difference information. ### Claim 12 A wireless communication device, comprising: processing circuitry configured to transmit a first signal to a first wireless communication device, the first signal including first precision information indicating a precision of a transmission power at the wireless communication device, the precision of the transmission power being a difference between a setting value at the wireless communication device and an actually measured value of the transmission power measured at the wireless communication device; receive a second signal indicating a permission of multiple access and a notification of assignment to a particular multiple access group, the permission of multiple access allowing simultaneous communication after the transmission of the first signal, the permission of multiple access having been determined based on first precision information, and the notification indicating that the wireless communication device is assigned to the particular multiple access group based on the precision of the transmission power indicated in the first precision information; and control, based on the second signal, transmission of a third signal via simultaneous communication with another wireless communication device belonging to the particular multiple access group, wherein the second signal includes a group notification frame which identifies the first wireless communication device in the particular multiple access group. ### Claim 13 (depends on 12) The wireless communication device according to claim 12, wherein the second signal includes a transmission permission signal indicating permission of the multiple access that allows the simultaneous communication, and the processing circuitry controls transmission of the third signal based on a communication parameter included in the transmission permission signal. ### Claim 14 (depends on 12) The wireless communication device according to claim 12, wherein the processing circuitry transmits a fourth signal that provides a notification about a change in connection for communication with a transmission source of the second signal or a change in the first precision information. ### Claim 15 A wireless communication method, comprising: receiving, by processing circuitry of a wireless communication device and from a first wireless communication device, a first signal including first precision information indicating a precision of a transmission power at the first wireless communication device, and the precision of the transmission power being a difference between a setting value at the first wireless communication device and an actually measured value of the transmission power measured at the first wireless communication device; assigning, based on the precision of the transmission power indicated in the first precision information, the first wireless communication device to a particular multiple access group; and transmitting, by the processing circuitry, a second signal to the first wireless communication device, wherein the second signal includes a group notification frame which identifies the first wireless communication device in the particular multiple access group, the second signal indicates a permission of multiple access and a notification of assignment to the particular multiple access group, the permission of multiple access is based on the first precision information, and the permission of multiple access allows simultaneous communication with another wireless communication device belonging to the particular multiple access group. ### Claim 16 A wireless communication method, comprising: transmitting a first signal, by processing circuitry of a wireless communication device to a first wireless communication device, including first precision information indicating a precision of a transmission power at the wireless communication device, the precision of the transmission power being a difference between a setting value at the wireless communication device and an actually measured value of the transmission power measured at the wireless communication device; receiving a second signal indicating a permission of multiple access and a notification of assignment to a particular multiple access group, the permission of multiple access allowing simultaneous communication after the transmission of the first signal, the permission of multiple access having been determined based on first precision information, and the notification indicating that the wireless communication device is assigned to the particular multiple access group based on the precision of the transmission power indicated in the first precision information; and controlling, by the processing circuitry based on the second signal, transmission of a third signal via simultaneous communication with another wireless communication device belonging to the particular multiple access group, wherein the second signal includes a group notification frame which identifies the first wireless communication device in the particular multiple access group. ### Claim 17 (depends on 1) The wireless communication device according to claim 1, wherein the processing circuitry is further configured to determine the permission of multiple access based on the first precision information and to generate the second signal indicating the permission of multiple access.