# US 10,873,438 B2 · Method and apparatus for feeding back data transmission acknowledgement and communication system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,873,438 B2 - Document ID: US10873438B2 - Status: Granted - Kind: B2 - Application number: 16/410,321 - Filed: 2019-05-13 - Published: 2019-08-29 - Granted: 2020-12-22 - Earliest claimed: 2016-11-21 - Assignees: Fujitsu Limited - Applicants: Fujitsu Limited - Inventors: Yulong Shi; Lianhai Wu; Meiyi Jia - Web page: https://patentgrep.com/patent/US10873438B2 ## CPC - H04L 1/1671: {the supervisory signal being transmitted together with control information} - H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)} - H04L 1/18: Automatic repetition systems, e.g. Van Duuren systems - H04L 1/1812: Hybrid protocols; Hybrid automatic repeat request [HARQ] - H04L 1/1822: involving configuration of automatic repeat request [ARQ] with parallel processes - H04L 1/1614: {using bitmaps} - H04L 1/1887: {Scheduling and prioritising arrangements} - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract When a user equipment is scheduled to feed back data transmission acknowledgement in a current uplink transmission channel, the user equipment orders hybrid automatic repeat request (HARQ) processes scheduled to perform data transmission acknowledgement at a current moment; the user equipment sequentially indicate whether data transmissions of the scheduled HARQ processes after ordering are successful or not via consecutive bits in feedback information bits, the number of the consecutive bits being identical to the number of the scheduled HARQ processes; and the user equipment transmits feedback information to a network side via the uplink transmission channel. Hence, a situation of data transmission of the HARQ processes scheduled to perform feeding back at the current moment is indicated in the feedback information. ## Claims ### Claim 1 An apparatus for feeding back data transmission acknowledgement, comprising: a memory that stores a plurality of instructions; and processor circuitry that couples to the memory and is configured to execute the instructions to: order more than one hybrid automatic repeat request (HARQ) processes scheduled to perform data transmission acknowledgement at a current moment, when a user equipment is scheduled to feed back data transmission acknowledgement in a current uplink transmission channel; sequentially indicate whether data transmissions of the scheduled HARQ processes after ordering are successful or not via consecutive bits in feedback information bits, the number of the consecutive bits being identical to the number of the scheduled HARQ processes; and transmit feedback information to a network side via the uplink transmission channel. ### Claim 2 (depends on 1) The apparatus according to claim 1, wherein the processor circuitry is further configured to ascendingly or descendingly order the scheduled HARQ processes according to process numbers of the scheduled HARQ processes. ### Claim 3 (depends on 1) The apparatus according to claim 1, wherein the processor circuitry is further configured to ascendingly or descendingly order the scheduled HARQ processes according to data transmission timing of the scheduled HARQ processes. ### Claim 4 (depends on 1) The apparatus according to claim 1, wherein the processor circuitry is further configured to ascendingly or descendingly order the scheduled HARQ processes according to physical layer numerology used by data of the scheduled HARQ processes. ### Claim 5 (depends on 4) The apparatus according to claim 4, wherein if the physical layer numerology used by the data of two scheduled HARQ processes is identical, the processor circuitry is further configured to ascendingly or descendingly order the two scheduled HARQ processes according to process numbers or data transmission timing of the two scheduled HARQ processes. ### Claim 6 (depends on 1) The apparatus according to claim 1, wherein the consecutive bits are first N consecutive bits, or last N consecutive bits, or N consecutive bits at any positions, in the feedback information bits, N being the number of the scheduled HARQ processes. ### Claim 7 (depends on 1) The apparatus according to claim 1, wherein an i-th bit in the consecutive bits is used to indicate whether data transmission of an i-th HARQ process in the scheduled HARQ processes after ordering is successful or not, i=1, 2, 3, N, and N being the number of the scheduled HARQ processes. ### Claim 8 (depends on 1) The apparatus according to claim 1, wherein the uplink transmission channel is a physical uplink control channel (PUCCH). ### Claim 9 An apparatus for feeding back data transmission acknowledgement, comprising: a memory that stores a plurality of instructions; and processor circuitry that couples to the memory and is configured to execute the instructions to: receive feedback information of hybrid automatic repeat request (HARQ) processes scheduled to perform data transmission acknowledgement at a current moment and transmitted by a user equipment; order the HARQ processes scheduled to perform data transmission acknowledgement at the current moment; and determine whether data of the scheduled HARQ processes are successfully transmitted according to a situation of data transmission of the scheduled HARQ processes after ordering indicated by the feedback information. ### Claim 10 (depends on 9) The apparatus according to claim 9, wherein the feedback information sequentially indicates the situation of data transmission of the scheduled HARQ processes via consecutive bits in feedback information bits; and wherein, the number of the consecutive bits is identical to the number of the scheduled HARQ processes. ### Claim 11 (depends on 9) The apparatus according to claim 9, wherein the processor circuitry is further configured to ascendingly or descendingly order the scheduled HARQ processes according to process numbers of the scheduled HARQ processes. ### Claim 12 (depends on 9) The apparatus according to claim 9, wherein the processor circuitry is further configured to ascendingly or descendingly order the scheduled HARQ processes according to data transmission timing of the scheduled HARQ processes. ### Claim 13 (depends on 9) The apparatus according to claim 9, wherein the processor circuitry is further configured to ascendingly or descendingly order the scheduled HARQ processes according to physical layer numerology used by data of the scheduled HARQ processes. ### Claim 14 (depends on 13) The apparatus according to claim 13, wherein if the physical layer numerology used by the data of any more than two of the scheduled HARQ processes are identical, the processor circuitry is further configured to ascendingly or descendingly order the more than two of the scheduled HARQ processes according to process numbers or data transmission timing of the more than two of the scheduled HARQ processes. ### Claim 15 (depends on 9) The apparatus according to claim 9, wherein the processor circuitry is further configured to: determine a correspondence between the scheduled HARQ processes after ordering and the process numbers of the scheduled HARQ processes according to a method for ordering the scheduled HARQ processes. ### Claim 16 A communication system, comprising: a first apparatus comprising: a receiver configured to receive feedback information of hybrid automatic repeat request (HARQ) processes scheduled to perform data transmission acknowledgement at a current moment and transmitted by a user equipment; and processor circuitry configured to order the HARQ processes scheduled to perform data transmission acknowledgement at the current moment, and determine whether data of the scheduled HARQ processes are successfully transmitted according to a situation of data transmission of the scheduled HARQ processes after ordering indicated by the feedback information; and a second apparatus comprising: processor circuitry configured to, when a user equipment is scheduled to feed back data transmission acknowledgement in a current uplink transmission channel, order more than one hybrid automatic repeat request (HARQ) processes scheduled to perform data transmission acknowledgement at a current moment; and sequentially indicate whether data transmissions of the scheduled HARQ processes after ordering are successful or not via consecutive bits in feedback information bits, the number of the consecutive bits being identical to the number of the scheduled HARQ processes; and a transmitter configured to transmit feedback information to a network side via the uplink transmission channel.