# US 12,225,410 B2 · Communication control apparatus and method, and wireless communication apparatus and method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,225,410 B2 - Document ID: US12225410B2 - Status: Granted - Kind: B2 - Application number: 17/437,911 - Filed: 2020-03-12 - Published: 2022-06-02 - Granted: 2025-02-11 - Earliest claimed: 2019-03-26 - Assignees: Sony Group Corporation - Applicants: Sony Group Corporation - Inventors: Yusuke Tanaka; Kosuke Aio - Web page: https://patentgrep.com/patent/US12225410B2 ## CPC - H04B 7/024: Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems - H04W 28/12: using signalling between network elements - H04L 1/1621: {Group acknowledgement, i.e. the acknowledgement message defining a range of identifiers, e.g. of sequence numbers} - H04L 1/1628: {List acknowledgements, i.e. the acknowledgement message consisting of a list of identifiers, e.g. of sequence numbers (H04L1/1614 takes precedence)} - H04L 1/1887: {Scheduling and prioritising arrangements} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04W 84/12: WLAN [Wireless Local Area Networks] - H04W 92/20: between access points - H04B: TRANSMISSION - 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 The present technology relates to a communication control apparatus and a method, and a wireless communication apparatus and a method that enable data that has failed to be demodulated to be retransmitted with higher reliability. A communication control apparatus that functions as AP1 causes a first wireless communication apparatus that functions as AP2 to hold a Data signal including data, and causes the first wireless communication apparatus to operate to transmit the Data signal to a second wireless communication apparatus that functions as STA upon receipt of a transmission request. The present technology is applicable to a wireless communication system. ## Claims ### Claim 1 A communication control apparatus, comprising: processing circuitry configured to: cause a first wireless communication apparatus to hold a data signal including data; control transmission of the data signal to a second wireless communication apparatus; control reception of a block acknowledgement signal from the second wireless communication apparatus; determine, based on the block acknowledgement signal, the data of the data signal that the second wireless communication apparatus has failed to demodulate; control, based on the determination of the data of the data signal that the second wireless communication apparatus has failed to demodulate, transmission of a trigger signal to the first wireless communication apparatus; and cause, based on the transmitted trigger signal, the first wireless communication apparatus to retransmit the data signal to the second wireless communication apparatus. ### Claim 2 (depends on 1) The communication control apparatus according to claim 1, wherein the processing circuitry is further configured to: control transmission of an initiation signal to the first wireless communication apparatus, wherein the initiation signal includes holding information; and control, based on the transmitted initiation signal, the first wireless communication apparatus to hold the data signal. ### Claim 3 (depends on 2) The communication control apparatus according to claim 2, wherein the holding information includes information that identifies the data signal to be held. ### Claim 4 (depends on 1) The communication control apparatus according to claim 1, wherein the trigger signal includes information relating to an identifier of the data signal that identifies data serving as a target for a retransmission request. ### Claim 5 (depends on 1) The communication control apparatus according to claim 1, wherein the processing circuitry is further configured to request a third wireless communication apparatus to transmit the trigger signal. ### Claim 6 (depends on 1) The communication control apparatus according to claim 1, wherein the processing circuitry is further configured to: control transmission of an initiation signal that causes the first wireless communication apparatus to hold the data signal; and determine, based on a reception result of a transmission destination, the data signal to be retransmitted by the first wireless communication apparatus. ### Claim 7 (depends on 1) The communication control apparatus according to claim 1, wherein the processing circuitry is further configured to control retransmission of the data signal to be transmitted by the first wireless communication apparatus, and a time of the retransmission of the data signal by the first wireless communication apparatus is identical to a time of the retransmission of the data signal by the communication control apparatus. ### Claim 8 A communication control method, comprising: causing a first wireless communication apparatus to hold a data signal including data; controlling transmission of the data signal to a second wireless communication apparatus; controlling reception of a block acknowledgement signal from the second wireless communication apparatus; determining, based on the block acknowledgement signal, the data of the data signal that the second wireless communication apparatus has failed to demodulate; controlling, based on the determination of the data of the data signal that the second wireless communication apparatus has failed to demodulate, transmission of a trigger signal to the first wireless communication apparatus; and causing, based on the transmitted trigger signal, the first wireless communication apparatus to retransmit the data signal to the second wireless communication apparatus. ### Claim 9 A wireless communication apparatus, comprising: processing circuitry configured to: control reception of a data signal including data from a first wireless communication apparatus; hold the data signal including data; control reception of a trigger signal from the first wireless communication apparatus, wherein the trigger signal is received based on a failure in demodulation of the data signal by a second wireless communication apparatus, the first wireless communication apparatus has transmitted the data signal to the second wireless communication apparatus, and the trigger signal includes information to cause retransmission of the data signal to the second wireless communication apparatus; and control retransmission of the data signal to the second wireless communication apparatus based on the reception of the trigger signal. ### Claim 10 (depends on 9) The wireless communication apparatus according to claim 9, wherein the processing circuitry is further configured to control reception of an initiation signal transmitted from the first wireless communication apparatus, and the initiation signal includes holding information for holding the data signal. ### Claim 11 (depends on 10) The wireless communication apparatus according to claim 10, wherein the processing circuitry is further configured to hold the data signal based on the holding information. ### Claim 12 (depends on 10) The wireless communication apparatus according to claim 10, wherein the processing circuitry is further configured to control the retransmission of the data signal based on the information included in the trigger signal. ### Claim 13 A wireless communication method, comprising: controlling reception of a data signal including data from a first wireless communication apparatus; holding the data signal including data; controlling reception of a trigger signal from the first wireless communication apparatus, wherein the trigger signal is received based on a failure in demodulation of the data signal by a second wireless communication apparatus the first wireless communication apparatus has transmitted the data signal to the second wireless communication apparatus, and the trigger signal includes information to cause retransmission of the data signal to the second wireless communication apparatus; and controlling retransmission of the data signal to the second wireless communication apparatus based on the reception of the trigger signal. ### Claim 14 A first wireless communication apparatus, comprising: a demodulator configured to: receive, from a first wireless communication apparatus, a data signal including data; demodulate the received data signal; receive, from a second wireless communication apparatus, a part of the data signal that has failed to be correctly demodulated; and demodulate the received part of the data signal, wherein the part of the data signal is retransmitted from the second wireless communication apparatus upon receipt of a first trigger signal, and the trigger signal is transmitted from the first wireless communication apparatus to the second wireless communication apparatus. ### Claim 15 (depends on 14) The wireless communication apparatus according to claim 14, wherein the demodulator is further configured to receive the part of the data signal transmitted from each of the first wireless communication apparatus and the second wireless communication apparatus upon receipt of the trigger signal. ### Claim 16 (depends on 15) The wireless communication apparatus according to claim 15, further comprising processng circuitry configured to; control transmission of the trigger signal including information to cause the first wireless communication apparatus and the second wireless communication apparatus to transmit the information being at least part of information included in the data signal. ### Claim 17 A wireless communication method, comprising: receiving, from a first wireless communication apparatus, a data signal including data; demodulating the received data signal; receiving, from a second wireless communication apparatus, a part of the data signal that has failed to be correctly demodulated; and demodulating the received part of the data signal, wherein the part of the data signal is transmitted from the second wireless communication apparatus upon receipt of a trigger signal, and the trigger signal is transmitted from the first wireless communication apparatus to the second wireless communication apparatus.