# US 10,771,197 B2 · Method for transmitting hybrid automatic repeat request feedback information, and user equipment > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,771,197 B2 - Document ID: US10771197B2 - Status: Granted - Kind: B2 - Application number: 16/324,735 - Filed: 2017-08-10 - Published: 2019-07-18 - Granted: 2020-09-08 - Earliest claimed: 2016-08-11 - Assignees: Ntt Docomo, Inc. - Applicants: Ntt Docomo Inc. - Inventors: Qin Mu; Liu Liu; Huiling Jiang; Naoto Okubo; Kazuaki Takeda - Web page: https://patentgrep.com/patent/US10771197B2 ## CPC - H04L 1/1819: {with retransmission of additional or different redundancy} - H04L 1/1854: {Scheduling and prioritising arrangements} - H04L 1/08: by repeating transmission, e.g. Verdan system {(H04L1/1858 and H04L1/189 take precedence)} - H04L 1/16: in which the return channel carries supervisory signals, e.g. repetition request signals - H04L 1/18: Automatic repetition systems, e.g. Van Duuren systems - H04L 1/1896: {ARQ related signaling} - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 80/08: Upper layer protocols {(network arrangements or communication protocols for networked applications H04L67/00)} - H04W 88/02: Terminal devices - H04L 1/1664: {the supervisory signal being transmitted together with payload signals; piggybacking} - 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 Disclosed are a method for transmitting Hybrid Automatic Repeat Request (HARQ) feedback information, a user equipment, and a base station. The method includes: determining a reception window of data on which HARQ binding is to be performed; detecting data in the reception window; and bundling and transmitting HARQ feedback information for the data detected in the reception window. By means of the method, the user equipment and the base station, HARD bundling can be very conveniently implemented in a Half-Duplex (HD) frequency division multiplexing system. ## Claims ### Claim 1 A method for transmitting hybrid automatic repeat request feedback information, comprising: determining a reception window of data on which hybrid automatic repeat request bundling is to be performed; detecting data in the reception window; and bundling and transmitting hybrid automatic repeat request feedback information for the data detected in the reception window, wherein the data detected in the reception window comprises a plurality of physical downlink shared channels, the method further comprising: determining a length and a starting position of the reception window, wherein the length of the reception window is determined based on a number of repetitions of each physical downlink shared channel and each physical downlink control channel associated with each physical downlink shared channel. ### Claim 2 A user equipment, comprising: a processor; a storage medium having computer program instructions stored thereon, wherein the computer program instructions, when executed by the processor, perform processing of: determining a reception window of data on which hybrid automatic repeat request bundling is to be performed; detecting data in the reception window; and bundling and transmitting hybrid automatic repeat request feedback information for the data detected in the reception window, wherein the data detected in the reception window comprises a plurality of physical downlink shared channels, determining the reception window by determining a length and a starting position of the reception window, wherein the length of the reception window is determined based on a number of repetitions of a physical downlink shared channel and a number of repetitions of a physical downlink control channel. ### Claim 3 (depends on 2) The user equipment according to claim 2, wherein the processor is configured to determine the starting position of the reception window based on a frame number of a frame, a subframe number of a subframe included in the frame, and the length of the reception window. ### Claim 4 (depends on 2) The user equipment according to claim 2, wherein the processor is configured to determine a subframe carrying a physical downlink shared channel among respective subframes included in a frame as the starting position of the reception window, the physical downlink shared channel having a downlink allocation indicator with a predetermined value. ### Claim 5 (depends on 2) The user equipment according to claim 2, wherein the processor is configured to bundle and transmit the hybrid automatic repeat request feedback information for the data detected in the reception window at a predetermined time after the reception window ending. ### Claim 6 (depends on 2) The user equipment according to claim 2, wherein the processor bundles and transmits the hybrid automatic repeat request feedback information in an uplink control channel or an uplink shared channel. ### Claim 7 A base station, comprising: a processor; a storage medium having computer program instructions stored thereon, wherein the computer program instructions, when executed by the processor, perform processing of: determining a reception window of data on which hybrid automatic repeat request bundling is performed by a user equipment; and receiving hybrid automatic repeat request feedback information for the data detected by the user equipment in the reception window which is bundled and transmitted by the user equipment, wherein the data detected in the reception window comprises a plurality of physical downlink shared channels, determining the reception window of data on which hybrid automatic repeat request bundling is performed by the user equipment by determining a length and a starting position of the reception window, wherein the length of the reception window is determined based on a number of repetitions of a physical downlink shared channel and a number of repetitions of a physical downlink control channel. ### Claim 8 (depends on 7) The base station according to claim 7, wherein the processor is configured to determine the starting position of the reception window based on a frame number of a frame, a subframe number of a subframe included in the frame, and the length of the reception window. ### Claim 9 (depends on 7) The base station according to claim 7, wherein the processor is configured to determine a subframe carrying a physical downlink shared channel among respective subframes included in a frame as the starting position of the reception window, the physical downlink shared channel having a downlink allocation indicator with a predetermined value. ### Claim 10 (depends on 7) The base station according to claim 7, wherein the processor is configured to receive hybrid automatic repeat request feedback information for the data detected by the user equipment in the reception window which is bundled and transmitted by the user equipment at a predetermined time after the reception window ending. ### Claim 11 (depends on 7) The base station according to claim 7, wherein the processor is configured to receive the hybrid automatic repeat request feedback information in an uplink control channel or an uplink shared channel.