# US 12,113,627 B2 · Wireless LAN communication device and wireless LAN communication method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,113,627 B2 - Document ID: US12113627B2 - Status: Granted - Kind: B2 - Application number: 17/530,511 - Filed: 2021-11-19 - Published: 2022-03-10 - Granted: 2024-10-08 - Earliest claimed: 2017-07-27 - Assignees: Sony Group Corporation - Applicants: Sony Group Corporation - Inventors: Shigeru Sugaya; Yusuke Tanaka - Web page: https://patentgrep.com/patent/US12113627B2 ## CPC - H04L 1/189: {Transmission or retransmission of more than one copy of a message} - H04L 1/0047: {Decoding adapted to other signal detection operation (in conjunction with sequence estimation or equalization H04L25/03286)} - H04L 1/16: in which the return channel carries supervisory signals, e.g. repetition request signals - H04L 1/1819: {with retransmission of additional or different redundancy} - H04W 28/04: Error control - H04W 80/02: Data link layer protocols - H04W 84/12: WLAN [Wireless Local Area Networks] - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract [Problem to be Solved] It is possible to achieve more appropriate retransmission control in wireless LAN systems. [Solution] There is provided a wireless LAN communication device including: a generator that generates a data frame for which a data unit in which an encoding process is performed and a data unit in which a retransmission process is performed are different from each other; and a transmission section that transmits the data frame. The encoding process makes it possible to determine whether or not decoding is successful. ## Claims ### Claim 1 A wireless LAN communication device comprising circuitry configured to: generate a data frame comprising a first data unit in which an encoding process is performed on first data and a second data unit in which a retransmission process of the first data is performed, wherein the first data unit and the second data unit are separate from each other, the encoding process making it possible to determine whether or not the first data of the first data unit is successfully decoded; append, to the data frame, information for use in identification of data to be subjected to the retransmission process; and transmit the data frame, wherein the information for use in identification of the data to be subjected to the retransmission process includes data length information and sequence number information of the data, wherein a range in data for which a reception process has been unsuccessful is specified; a combining process with a portion of retransmitted data is, and the combining process is performed by combining a portion of the first data of the first data unit that was decoded successfully with a portion of the first data from the second data unit, the portion of the first data from the second data unit corresponding to the portion of the first data of the first data unit that was not decoded successfully. ### Claim 2 (depends on 1) The wireless LAN communication device according to claim 1, wherein the first data unit in which the encoding process is performed is smaller than the second data unit in which the retransmission process is performed. ### Claim 3 (depends on 1) The wireless LAN communication device according to claim 1, wherein the first data unit in which the encoding process is performed is larger than the second data unit in which the retransmission process is performed. ### Claim 4 (depends on 1) The wireless LAN communication device according to claim 1, wherein the circuitry is further configured to generate the data frame through aggregation of data of data units in which the retransmission process is performed. ### Claim 5 (depends on 4) The wireless LAN communication device according to claim 4, wherein the circuitry is further configured to perform the aggregation until a predetermined data length is reached. ### Claim 6 (depends on 5) The wireless LAN communication device according to claim 5, wherein the data frame comprises A-MPDU obtained by aggregating MPDUs or A-MSDU obtained by aggregating MSDUs. ### Claim 7 (depends on 5) The wireless LAN communication device according to claim 5, wherein the circuitry is further configured to generate the data frame with a plurality of identical pieces of data for retransmission. ### Claim 8 (depends on 1) The wireless LAN communication device according to claim 1, wherein the circuitry is further configured to include the information for use in identification of the data in a physical layer header or a physical layer trailer appended to the data frame. ### Claim 9 A wireless LAN communication method that is executed by a computer, the wireless LAN communication method comprising: generating a data frame comprising a first data unit in which an encoding process is performed on first data and a second data unit in which a retransmission process of the first data is performed, wherein the first data unit and the second data unit are separate from each other, the encoding process making it possible to determine whether or not the first data of the first data unit is successfully decoded; appending, to the data frame, information for use in identification of data to be subjected to the retransmission process; and transmitting the data frame, wherein the information for use in identification of the data to be subjected to the retransmission process includes data length information and sequence number information of the data, wherein a range in data for which a reception process has been unsuccessful is specified, a combining process with a portion of retransmitted data is, and the combining process is performed by combining a portion of the first data of the first data unit that was decoded successfully with a portion of the first data from the second data unit, the portion of the first data from the second data unit corresponding to the portion of the first data of the first data unit that was not decoded successfully. ### Claim 10 (depends on 9) The wireless LAN communication method according to claim 9, wherein the first data unit in which the encoding process is performed is smaller than the second data unit in which the retransmission process is performed. ### Claim 11 (depends on 9) The wireless LAN communication method according to claim 9, wherein the first data unit in which the encoding process is performed is larger than the second data unit in which the retransmission process is performed. ### Claim 12 A wireless LAN communication device comprising circuitry configured to: receive a data frame comprising a first data unit in which an encoding process is performed on first data and a second data unit in which a retransmission process of the first data is performed, wherein the first data unit and the second data unit are separate from each other, the encoding process making it possible to determine whether or not the first data of the first data unit is successfully decoded; and decode the data frame, wherein the received data frame includes information for use in identification of data to subjected to the retransmission process, and wherein the information for use in identification of the data to subjected to the retransmission process includes data length information and sequence number information of the data, wherein the circuitry is further configured to: specify a range in data for which the reception process has been unsuccessful, perform a combining process with a portion of retransmitted data, and perform the combining process by combining a portion of the first data of the first data unit that was decoded successfully with a portion of the first data from the second data unit, the portion of the first data from the second data unit corresponding to the portion of the first data of the first data unit that was not decoded successfully. ### Claim 13 (depends on 12) The wireless LAN communication device according to claim 12, wherein the data frame is generated through aggregation of data of data units in which the retransmission process is performed. ### Claim 14 (depends on 13) The wireless LAN communication device according to claim 13, wherein the data frame comprises A-MPDU obtained by aggregating MPDUs or A-MSDU obtained by aggregating MSDUs. ### Claim 15 (depends on 12) The wireless LAN communication device according to claim 12, wherein the received data frame includes a plurality of identical pieces of data for retransmission. ### Claim 16 (depends on 12) The wireless LAN communication device according to claim 12, wherein the information for use in identification of the data is included in a physical layer header or a physical layer trailer appended to the data frame. ### Claim 17 A wireless LAN communication method that is executed by a computer, the wireless LAN communication method comprising: receiving a data frame comprising a first data unit in which an encoding process is performed on first data and a second data unit in which a retransmission process of the first data is performed, wherein the first data unit and the second data unit are separate from each other, the encoding process making it possible to determine whether or not the first data of the first data unit is successfully decoded; and decoding the data frame, wherein the received data frame includes information for use in identification of data to subjected to the retransmission process, and wherein the information for use in identification of the data to subjected to the retransmission process includes data length information and sequence number information of the data, wherein the method further comprises: specifying a range in data for which the reception process has been unsuccessful, performing a combining process with a portion of retransmitted data, and performing the combining process by combining a portion of the first data of the first data unit that was decoded successfully with a portion of the first data from the second data unit, the portion of the first data from the second data unit corresponding to the portion of the first data of the first data unit that was not decoded successfully. ### Claim 18 (depends on 17) The wireless LAN communication method according to claim 17, further comprising: specifying a range in data for which the reception process has been unsuccessful; and performing a combining process with a portion of retransmitted data.