# US 10,320,525 B2 · Uplink feedback method, user equipment, and base station > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,320,525 B2 - Document ID: US10320525B2 - Status: Granted - Kind: B2 - Application number: 15/656,866 - Filed: 2017-07-21 - Published: 2017-11-09 - Granted: 2019-06-11 - Earliest claimed: 2013-01-21 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Dong Chen; Xiaoying Xu - Web page: https://patentgrep.com/patent/US10320525B2 ## CPC - H04L 1/0073: {Special arrangements for feedback channel} - H04L 1/1812: Hybrid protocols; Hybrid automatic repeat request [HARQ] - H04L 1/1861: {Physical mapping arrangements (for ACK signaling see also H04L5/0053)} - H04L 1/1671: {the supervisory signal being transmitted together with control information} - H04W 72/02: Selection of wireless resources by user or 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 The present invention provides an uplink feedback method, user equipment, and a base station, where the method includes: detecting, by user equipment, downlink data in at least two consecutive downlink sub-frames; performing joint encoding, by the user equipment, for a feedback for the downlink data in the at least two consecutive downlink sub-frames; and transmitting, by the user equipment in an uplink sub-frame corresponding to the last sub-frame of the at least two consecutive downlink sub-frames, joint uplink feedback information for the at least two consecutive downlink sub-frames, so as to resolve issue how uplink feedback is performed when downlink bandwidth is different from uplink bandwidth. ## Claims ### Claim 1 An uplink feedback method, comprising: detecting, by a user equipment, downlink data in at least two consecutive downlink sub-frames; joint encoding, by the user equipment, feedback signals responding to the downlink data in the at least two consecutive downlink sub-frames to obtain joint uplink feedback information; and transmitting, by the user equipment in an uplink sub-frame used for transmitting feedback information for one of the at least two consecutive downlink sub-frames, the joint uplink feedback information for the at least two consecutive downlink sub-frames; wherein length of the uplink sub-frame used for transmitting the feedback information is N multiplied by length of one downlink sub-frame in the at least two consecutive downlink sub-frames, wherein N is an integer greater than 2. ### Claim 2 (depends on 1) The method according to claim 1, wherein the at least two consecutive downlink sub-frames comprise one selected from the group consisting of: at least two consecutive downlink sub-frames of a primary cell of the user equipment; and at least two consecutive downlink sub-frames of a secondary cell of the user equipment. ### Claim 3 (depends on 2) The method according to claim 2, wherein: when the at least two consecutive downlink sub-frames comprise the at least two consecutive downlink sub-frames of the primary cell of the user equipment, a sum of lengths of downlink sub-frames of the primary cell is equal to a length of an uplink sub-frame of the primary cell; and when the at least two consecutive downlink sub-frames comprise the at least two consecutive downlink sub-frames of the secondary cell of the user equipment, a sum of lengths of downlink sub-frames of the secondary cell is equal to the length of the uplink sub-frame of the primary cell. ### Claim 4 (depends on 1) The method according to claim 1, wherein a quantity of pieces of Hybrid automatic repeat request (HARQ) feedback information in the joint uplink feedback information is greater than a quantity of cells. ### Claim 5 (depends on 1) The method according to claim 1, wherein the joint uplink feedback information comprises at least one selected from the group consisting of: (a) a quantity of the at least two consecutive downlink sub-frames, and (b) sub-frame numbers of the at least two consecutive downlink sub-frames. ### Claim 6 An uplink feedback method, comprising: transmitting, by a base station, downlink data to a user equipment; and receiving, by the base station in an uplink sub-frame used for transmitting feedback information for one of at least two consecutive downlink sub-frames, joint uplink feedback information responding to the at least two consecutive downlink sub-frames from the user equipment; wherein length of the uplink sub-frame used for transmitting the feedback information is N multiplied by length of one downlink sub-frame in the at least two consecutive downlink sub-frames, wherein N is an integer greater than 2. ### Claim 7 (depends on 6) The method according to claim 6, wherein the at least two consecutive downlink sub-frames comprise one selected from the group consisting of: at least two consecutive downlink sub-frames of a primary cell of the user equipment; and at least two consecutive downlink sub-frames of a secondary cell of the user equipment. ### Claim 8 (depends on 7) The method according to claim 7, wherein: when the at least two consecutive downlink sub-frames comprise the at least two consecutive downlink sub-frames of the primary cell of the user equipment, a sum of lengths of downlink sub-frames of the primary cell is equal to a length of an uplink sub-frame of the primary cell; and when the at least two consecutive downlink sub-frames comprise the at least two consecutive downlink sub-frames of the secondary cell of the user equipment, a sum of lengths of downlink sub-frames of the secondary cell is equal to a length of an uplink sub-frame of the primary cell. ### Claim 9 (depends on 6) The method according to claim 6, wherein a quantity of pieces of Hybrid automatic repeat request (HARQ) feedback information in the joint uplink feedback information is greater than a quantity of cells. ### Claim 10 (depends on 6) The method according to claim 6, wherein the joint uplink feedback information comprises at least one selected from the group consisting of: (a) a quantity of the at least two consecutive downlink sub-frames, and (b) sub-frame numbers of the at least two consecutive downlink sub-frames. ### Claim 11 A user equipment, comprising: a receiver; a transmitter; and a processor coupled to a non-transitory computer-readable storage medium storing executable instructions, such that when the executable instructions are executed by the processor, the processor facilitates performing: detecting, by the receiver, downlink data in at least two consecutive downlink sub-frames; jointly encoding feedback signals responding to the downlink data in the at least two consecutive downlink sub-frames to obtain joint uplink feedback information; and transmitting, by the transmitter, in an uplink sub-frame used for transmitting feedback information for one of the at least two consecutive downlink sub-frames, the joint uplink feedback information for the at least two consecutive downlink sub-frames; wherein length of the uplink sub-frame used for transmitting the feedback information is N multiplied by length of one downlink sub-frame in the at least two consecutive downlink sub-frames, wherein N is an integer greater than 2. ### Claim 12 (depends on 11) The apparatus according to claim 11, wherein the at least two consecutive downlink sub-frames comprise one selected from the group consisting of: at least two consecutive downlink sub-frames of a primary cell of the user equipment; and at least two consecutive downlink sub-frames of a secondary cell of the user equipment. ### Claim 13 (depends on 12) The apparatus according to claim 12, wherein: when the at least two consecutive downlink sub-frames comprise the at least two consecutive downlink sub-frames of the primary cell of the user equipment, a sum of lengths of downlink sub-frames of the primary cell is equal to a length of an uplink sub-frame of the primary cell; and when the at least two consecutive downlink sub-frames comprise the at least two consecutive downlink sub-frames of the secondary cell of the user equipment, a sum of lengths of downlink sub-frames of the secondary cell is equal to a length of an uplink sub-frame of the primary cell. ### Claim 14 (depends on 11) The apparatus according to claim 11, wherein a quantity of pieces of Hybrid automatic repeat request (HARQ) feedback information in the joint uplink feedback information is greater than a quantity of cells. ### Claim 15 (depends on 11) The apparatus according to claim 11, wherein the joint uplink feedback information comprises at least one selected from the group consisting of: (a) a quantity of the at least two consecutive downlink sub-frames, and (b) sub-frame numbers of the at least two consecutive downlink sub-frames. ### Claim 16 An apparatus, comprising; a receiver; a transmitter; and a processor coupled to a non-transitory computer-readable storage medium storing executable instructions, such that when the executable instructions are executed by the processor, the processor facilitates performing: transmitting, by the transmitter, downlink data to a user equipment; and receiving, by the receiver, in an uplink sub-frame used for transmitting feedback information for one of at least two consecutive downlink sub-frames, joint uplink feedback information responding to the at least two consecutive downlink sub-frames and transmitted by the user equipment; wherein length of the uplink sub-frame used for transmitting the feedback information is N multiplied by length of one downlink sub-frame in the at least two consecutive downlink sub-frames, wherein N is an integer greater than 2. ### Claim 17 (depends on 16) The apparatus according to claim 16, wherein the at least two consecutive downlink sub-frames comprise one selected from the group consisting of: at least two consecutive downlink sub-frames of a primary cell of the user equipment; and at least two consecutive downlink sub-frames of a secondary cell of the user equipment. ### Claim 18 (depends on 17) The apparatus according to claim 17, wherein: when the at least two consecutive downlink sub-frames comprise the at least two consecutive downlink sub-frames of the primary cell of the user equipment, a sum of lengths of downlink sub-frames of the primary cell is equal to a length of an uplink sub-frame of the primary cell; and when the at least two consecutive downlink sub-frames comprise the at least two consecutive downlink sub-frames of the secondary cell of the user equipment, a sum of lengths of downlink sub-frames of the secondary cell is equal to a length of an uplink sub-frame of the primary cell. ### Claim 19 (depends on 16) The apparatus according to claim 16, wherein a quantity of pieces of Hybrid automatic repeat request (HARQ) feedback information in the joint uplink feedback information is greater than a quantity of cells. ### Claim 20 (depends on 16) The apparatus according to claim 16, wherein the joint uplink feedback information comprises at least one selected from the group consisting of: (a) a quantity of the at least two consecutive downlink sub-frames, and (b) sub-frame numbers of the at least two consecutive downlink sub-frames.