# US 11,121,826 B2 · Communication apparatus 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 11,121,826 B2 - Document ID: US11121826B2 - Status: Granted - Kind: B2 - Application number: 16/608,190 - Filed: 2018-03-12 - Published: 2021-04-08 - Granted: 2021-09-14 - Earliest claimed: 2017-05-02 - Assignees: Sony Corporation - Applicants: Sony Corporation - Inventors: Hiroki Matsuda; Kazuyuki Shimezawa; Naoki Kusashima - Web page: https://patentgrep.com/patent/US11121826B2 ## CPC - H04L 1/1614: {using bitmaps} - H04L 1/1819: {with retransmission of additional or different redundancy} - H04L 1/0003: {by switching between different modulation schemes} - H04L 1/1896: {ARQ related signaling} - H04W 28/04: Error control - H04W 72/12: Wireless traffic scheduling - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - 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 To make flexible design according to a use case possible and further improve the transmission efficiency of the entire system. A communication apparatus includes a communication section configured to perform wireless communication, and a control section configured to control such that information corresponding to a plurality of one-encoding units to be made a target of re-transmission is notified to another apparatus, the target of re-transmission being, from among one or a plurality of one-encoding units defined so as to include at least part of a plurality of one-encoding units included in a predetermined transmission unit, any of the plurality of one-encoding units whose reception results in failure and all of the plurality of one-encoding units included in the predetermined transmission unit. ## Claims ### Claim 1 A communication apparatus, comprising: communication circuitry configured to perform wireless communication; and control circuitry configured to control such that information corresponding to a plurality of one-encoding units, in a predetermined transmission unit, to be made a target of re-transmission is notified to the another apparatus, the target of re-transmission being any of the plurality of one-encoding units in the predetermined transmission unit not successfully received at the another apparatus, wherein, based on quasi-static information notified to the another apparatus, the control circuitry controls, in response to a reply from the another apparatus to the transmission of data to the another apparatus, such that, upon the another apparatus failing to successfully receive only a subset of the plurality of one-encoding units in the predetermined transmission unit, either: a) only the subset of the plurality of one-encoding units in the predetermined transmission unit that the another apparatus fails to receive are re-transmitted to the another apparatus or b) all of the plurality of one-encoding units included in the predetermined transmission unit are re-transmitted to the another apparatus. ### Claim 2 (depends on 1) The communication apparatus according to claim 1, further comprising: decision circuitry configured to decide a reception result of data transmitted from the another apparatus, wherein the control circuitry controls such that the information indicative of which one of the plurality of one-encoding units that the another apparatus fails to receive and all of the plurality of one-encoding units included in the predetermined transmission unit is to be made a target of re-transmission is notified to the another apparatus. ### Claim 3 (depends on 2) The communication apparatus according to claim 2, wherein: the another apparatus includes a terminal apparatus, and the control circuitry controls such that the information is notified to the another apparatus in an associated relationship with information regarding allocation of a resource for allowing the another apparatus to transmit data. ### Claim 4 (depends on 3) The communication apparatus according to claim 3, wherein the control circuitry controls such that information regarding the plurality of one-encoding units allocated to transmission of new data from among the one or the plurality of one-encoding units included in the predetermined transmission unit is notified to the terminal apparatus. ### Claim 5 (depends on 3) The communication apparatus according to claim 3, wherein the control circuitry controls such that information indicative of the plurality of one-encoding units to be made a target of re-transmission from among the one or the plurality of one-encoding units included in the predetermined transmission unit is notified to the terminal apparatus. ### Claim 6 A communication apparatus, comprising: communication circuitry configured to perform wireless communication; and control circuitry configured to control, in response to a reply to a transmission of data from the communication apparatus to another apparatus, such that at least a subset of a plurality of one-encoding units in a predetermined transmission unit is re-transmitted to the another apparatus, wherein the control circuitry: controls such that information for allowing the another apparatus to specify the plurality of one-encoding units to be made a target of re-transmission is notified to the another apparatus, performs, based on information regarding the plurality of one-encoding units to be made the target of re-transmission, a predetermined process for predetermined information associated with the plurality of one-encoding units, and controls such that the predetermined information for which the predetermined process is carried out is notified, as the information for specifying the plurality of one-encoding units, to the another apparatus units in the predetermined transmission unit not successfully received at the another apparatus; and based on quasi-static information notified to the another apparatus, controlling, in response to a reply from the another apparatus to the transmission of data to the another apparatus, such that, upon the another apparatus failing to successfully receive only a subset of the plurality of one-encoding units in the predetermined transmission unit, either: a) only the subset of the plurality of one-encoding units in the predetermined transmission unit that the another apparatus fails to receive are re-transmitted to the another apparatus or b) all of the plurality of one-encoding units included in the predetermined transmission unit are re-transmitted to the another apparatus. ### Claim 7 (depends on 6) The communication apparatus according to claim 6, wherein the predetermined information includes an error detection code added to the plurality of one-encoding units to be made the target of re-transmission, an error detection code added to the one-encoding units included in the plurality of one-encoding units or the one-encoding units. ### Claim 8 (depends on 6) The communication apparatus according to claim 6, wherein the predetermined process includes at least one of scrambling or interleaving. ### Claim 9 (depends on 6) The communication apparatus according to claim 6, wherein the another apparatus includes a terminal apparatus. ### Claim 10 (depends on 6) The communication apparatus according to claim 6, wherein the another apparatus includes a base station. ### Claim 11 A communication method performed by a communication apparatus, comprising: performing wireless communication; controlling such that information corresponding to a plurality of one-encoding units, in a predetermined transmission unit, to be made a target of re-transmission is notified to the another apparatus, the target of re-transmission being any of the plurality of one-encoding wherein information for allowing the another apparatus to specify the plurality of one-encoding units to be made a target of re-transmission is controlled so as to be notified to the another apparatus; performing, based on information regarding the plurality of one-encoding units to be made the target of re-transmission, a predetermined process for predetermined information associated with the plurality of one-encoding units; and controlling such that the predetermined information for which the predetermined process is carried out is notified, as the information for specifying the plurality of one-encoding units, to the another apparatus. ### Claim 12 A communication method performed by a communication apparatus, comprising: performing wireless communication; controlling, in response to a reply to transmission of data, in a plurality of one-encoding units in a predetermined transmission unit, to another apparatus, such that at least a subset of the plurality of one-encoding units is re-transmitted to the another apparatus. ### Claim 13 (depends on 12) The method according to claim 12, wherein the predetermined information includes an error detection code added to the plurality of one-encoding units to be made the target of re-transmission, an error detection code added to the one-encoding units included in the plurality of one-encoding units or the one-encoding units. ### Claim 14 (depends on 12) The method according to claim 12, wherein the predetermined process includes at least one of scrambling or interleaving. ### Claim 15 A non-transitory computer-readable program product containing instructions to cause a computer to perform a communication method, the communication method comprising: performing wireless communication; controlling such that information corresponding to a plurality of one-encoding units, in a predetermined transmission unit, to be made a target of re-transmission is notified to the another apparatus, the target of re-transmission being any of the plurality of one-encoding units in the predetermined transmission unit not successfully received at the another apparatus; and based on quasi-static information notified to the another apparatus: controlling, in response to a reply from the another apparatus to the transmission of data to the another apparatus, such that, upon the another apparatus failing to successfully receive only a subset the plurality of one-encoding units in the predetermined transmission unit, either: a) only the subset of the plurality of one-encoding units in the predetermined transmission unit that the another apparatus fails to receive are re-transmitted to the another apparatus or b) all of the plurality of one-encoding units included in the predetermined transmission unit are re-transmitted to the another apparatus. ### Claim 16 A non-transitory computer-readable program product containing instructions to cause a computer to perform a communication method, the communication method comprising: performing wireless communication; controlling, in response to a reply to transmission of data, in a plurality of one-encoding units in a predetermined transmission unit, to another apparatus, such that at least a subset of the plurality of one-encoding units is re-transmitted to the another apparatus, wherein information for allowing the another apparatus to specify the plurality of one-encoding units to be made a target of re-transmission is controlled so as to be notified to the another apparatus; performing, based on information regarding the plurality of one-encoding units to be made the target of re-transmission, a predetermined process for predetermined information associated with the plurality of one-encoding units; and controlling such that the predetermined information for which the predetermined process is carried out is notified, as the information for specifying the plurality of one-encoding units, to the another apparatus.