# US 10,764,873 B2 · Method and device for channel selection > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,764,873 B2 - Document ID: US10764873B2 - Status: Granted - Kind: B2 - Application number: 16/054,765 - Filed: 2018-08-03 - Published: 2018-11-29 - Granted: 2020-09-01 - Earliest claimed: 2016-02-05 - Assignees: Baicells Technologies Co. Ltd. - Applicants: Baicells Technologies Co. Ltd. - Inventors: Mingyu Zhou - Web page: https://patentgrep.com/patent/US10764873B2 ## CPC - H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network - H04L 1/1614: {using bitmaps} - H04L 5/0037: {Inter-user or inter-terminal allocation} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)} - H04W 72/1268: of uplink data flows - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 76/27: Transitions between radio resource control [RRC] states - H04L 5/0005: {Time-frequency} - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract The present disclosure discloses a method and device for channel selection. The method comprises: indicating a time-domain resource position and a frequency-domain resource position of an extended physical uplink control channel region based on a common physical downlink control channel; and instructing a group of user terminals to transmit an extended physical uplink control channel in the extended physical uplink control channel region which has been indicated, wherein different user terminals each transmit the extended physical uplink control channel in different extended physical uplink control channel regions which have been indicated. The present disclosure solves a technical problem of a larger downlink signaling cost resulted from the uplink scheduling authorization when a larger number of users transmit data in the extended physical uplink control. ## Claims ### Claim 1 A method for channel selection, comprising steps of: indicating a time-domain resource position and a frequency-domain resource position of each of a plurality of extended physical uplink control channel regions based on a common physical downlink control channel; and instructing each user terminal in a group of user terminals to transmit an extended physical uplink control channel in one of the indicated plurality of extended physical uplink control channel regions, wherein different user terminals transmit extended physical uplink control channels in different ones of the indicated plurality of extended physical uplink control channel regions, wherein the step of indicating the frequency-domain resource position of each of a plurality of extended physical uplink control channel regions based on the common physical downlink control channel comprises: allocating a frequency-domain resource position for the extended physical uplink control channel according to radio resource control (RRC) signaling; or indicating the frequency-domain resource position of the extended physical uplink control channel region according to downlink control information (DCI) carried on the common physical downlink control channel, wherein, allocating the frequency-domain resource position for the extended physical uplink control channel according to the RRC signaling comprises: indicating an interlace corresponding to the extended physical uplink control channel by a bitmap of 10-bit, or indicating any one interlace among 10 interlaces occupied by the extended physical uplink control channel by 4-bit, and wherein, indicating the frequency-domain resource position of the extended physical uplink control channel region according to the DCI carried on the common physical downlink control channel comprises: indicating an interlace corresponding to the extended physical uplink control channel by a bitmap of 10-bit, or indicating any one interlace among 10 interlaces occupied by the extended physical uplink control channel by 4-bit. ### Claim 2 (depends on 1) The method according to claim 1, wherein the step of indicating the time-domain resource position of each of a plurality of extended physical uplink control channel regions based on the common physical downlink control channel comprises: using an Nth subframe after a subframe where the common physical downlink channel is transmitted as a subframe where the extended physical uplink control channel region is located, wherein a subframe where the common physical downlink control channel region is located is the time-domain resource position; or using an Nth uplink subframe after a subframe carried in transmission of the common physical downlink control channel as the subframe where the extended physical uplink control channel region is located, wherein the subframe where the common physical downlink control channel region is located is the time-domain resource position; or obtaining DCI carried by the common physical downlink control channel, and indicating the time-domain resource position of the extended physical uplink control channel region according to the DCI. ### Claim 3 (depends on 2) The method according to claim 2, wherein said N is set in any one of the following ways: being set by RRC, being set by the DCI, or being preset in a standard. ### Claim 4 (depends on 2) The method according to claim 2, wherein indicating the time-domain resource position of the extended physical uplink control channel according to the DCI comprises: when a user terminal detects, on the downlink subframe N, the common physical downlink control channel for indicating the extended physical uplink control channel, using an Nth subframe after a subframe where the common physical downlink control channel is currently located, indicated by the DCI, as the subframe where the extended physical uplink control channel region is located. ### Claim 5 (depends on 4) The method according claim 4, wherein indicating the time-domain resource position of the extended physical uplink control channel according to the DCI includes: indicating the downlink subframe N with a range of 1-8 by 3 bits. ### Claim 6 (depends on 1) A non-transitory computer-readable storage medium, wherein the non-transitory computer-readable storage medium stores computer instructions which are used to cause a computer to perform the method according to claim 1. ### Claim 7 (depends on 1) A computer program product, comprising a non-transitory computer-readable storage medium storing a computing program, the computing program comprising program instructions that when executed by a computer, cause the computer to perform the method according to claim 1. ### Claim 8 (depends on 1) An electronic device, comprising: at least one processor and a memory communicatively connected to the at least one processor; wherein, the memory stores instructions, and the at least one processor executes the instructions to perform the method according to claim 1. ### Claim 9 A device for channel selection, comprising: at least one processor and a memory communicatively connected to the at least one processor, wherein the memory stores instructions, and the at least one processor executes the instructions to: indicate a time-domain resource position and a frequency-domain resource position of each of a plurality of extended physical uplink control channel regions based on a common physical downlink control channel, and instruct each user terminal in a group of user terminals to transmit an extended physical uplink control channel in one of the indicated plurality of extended physical uplink control channel regions, wherein different user terminals transmit extended physical uplink control channels in different ones of the indicated plurality of extended physical uplink control channel regions, wherein said indicating the frequency-domain resource position of each of a plurality of extended physical uplink control channel regions based on the common physical downlink control channel comprises: allocating a frequency-domain resource position for the extended physical uplink control channel according to radio resource control (RRC) signaling; or indicating the frequency-domain resource position of the extended physical uplink control channel region according to downlink control information (DCI) carried on the common physical downlink control channel, wherein, allocating the frequency-domain resource position for the extended physical uplink control channel according to the radio resource control RRC signaling comprises: indicating an interlace corresponding to the extended physical uplink control channel by a bitmap of 10-bit, or indicating any one interlace among 10 interlaces occupied by the extended physical uplink control channel by 4-bit, and wherein, indicating the frequency-domain resource position of the extended physical uplink control channel region according to the DCI carried on the common physical downlink control channel comprises: indicating an interlace corresponding to the extended physical uplink control channel by a bitmap of 10-bit, or indicating any one interlace among 10 interlaces occupied by the extended physical uplink control channel by 4-bit.