# US 11,122,555 B2 · Data transmission method, terminal device, and base station system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,122,555 B2 - Document ID: US11122555B2 - Status: Granted - Kind: B2 - Application number: 16/580,700 - Filed: 2019-09-24 - Published: 2020-01-16 - Granted: 2021-09-14 - Earliest claimed: 2017-03-24 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Junchao Li; Haibao Ren; Hao Tang; Zhenfei Tang; Yi Wang - Web page: https://patentgrep.com/patent/US11122555B2 ## CPC - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04L 1/0039: {other detection of signalling, e.g. detection of TFCI explicit signalling (H04L1/0046, H04L27/0012 and H04L25/0262 take precedence)} - H04L 5/001: {the frequencies being arranged in component carriers} - H04L 5/0035: {Resource allocation in a cooperative multipoint environment} - H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)} - H04L 5/0094: {Indication of how sub-channels of the path are allocated} - H04W 72/0466: {the resource being a scrambling code} - 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 disclosure relates to data transmission methods, terminal devices, and base station systems. In one example method, a base station sends information about a first control resource set and information about a second control resource set to a terminal device. The terminal device detects first control information in a first control channel candidate set, and detects second control information in a second control channel candidate set. ## Claims ### Claim 1 A data transmission method, wherein the method comprises: receiving, by a terminal device, first configuration information and second configuration information from a base station, wherein the first configuration information comprises information about a first control resource set, and wherein the second configuration information comprises information about a second control resource set; detecting, by the terminal device, first control information in a first control channel candidate set corresponding to the first control resource set; and in response to successfully detecting the first control information in the first control channel candidate set corresponding to the first control resource set, detecting, by the terminal device, second control information in a second control channel candidate set corresponding to the second control resource set, wherein a sum of a size of the first control channel candidate set and a size of the second control channel candidate set is not greater than a first threshold. ### Claim 2 (depends on 1) The method according to claim 1, wherein a payload length of the first control information is different from a payload length of the second control information. ### Claim 3 (depends on 1) The method according to claim 1, wherein: the first configuration information further comprises first transmission mode information associated with the first control information, and the second configuration information further comprises second transmission mode information associated with the second control information; or before the detecting, by the terminal device, first control information in a first control channel candidate set corresponding to the first control resource set, the method further comprises: receiving, by the terminal device, third configuration information from the base station, wherein the third configuration information comprises first transmission mode information associated with the first control information and second transmission mode information associated with the second control information. ### Claim 4 (depends on 3) The method according to claim 3, wherein: the first transmission mode information is a transmission mode; or the first transmission mode information is one or more of a resource mapping manner, a demodulation reference signal (DMRS) scrambling code sequence, and quasi co-location (QCL). ### Claim 5 (depends on 3) The method according to claim 3, wherein: the second transmission mode information is a transmission mode; or the second transmission mode information is one or more of a resource mapping manner, a DMRS scrambling code sequence, and QCL. ### Claim 6 (depends on 1) The method according to claim 1, wherein the first control resource set and the second control resource set belong to different carriers. ### Claim 7 A terminal device, comprising: a transceiver, the transceiver configured to receive first configuration information and second configuration information from a base station, wherein the first configuration information comprises information about a first control resource set, and wherein the second configuration information comprises information about a second control resource set; and at least one processor, the at least one processor configured to: detect first control information in a first control channel candidate set corresponding to the first control resource set; and in response to successfully detecting the first control information in the first control channel candidate set corresponding to the first control resource set, detect second control information in a second control channel candidate set corresponding to the second control resource set, wherein a sum of a size of the first control channel candidate set and a size of the second control channel candidate set is not greater than a first threshold. ### Claim 8 (depends on 7) The terminal device according to claim 7, wherein a payload length of the first control information is different from a payload length of the second control information. ### Claim 9 (depends on 7) The terminal device according to claim 7, wherein: the first configuration information further comprises first transmission mode information associated with the first control information, and the second configuration information further comprises second transmission mode information associated with the second control information; or the transceiver is further configured to receive third configuration information from the base station, wherein the third configuration information comprises first transmission mode information associated with the first control information and second transmission mode information associated with the second control information. ### Claim 10 (depends on 9) The terminal device according to claim 9, wherein: the first transmission mode information is a transmission mode; or the first transmission mode information is one or more of a resource mapping manner, a demodulation reference signal (DMRS) scrambling code sequence, and quasi co-location (QCL). ### Claim 11 (depends on 9) The terminal device according to claim 9, wherein: the second transmission mode information is a transmission mode; or the second transmission mode information is one or more of a resource mapping manner, a DMRS scrambling code sequence, and QCL. ### Claim 12 (depends on 7) The terminal device according to claim 7, wherein the first control resource set and the second control resource set belong to different carriers. ### Claim 13 A base station system, comprising a first base station and a second base station, wherein: the first base station is configured to: send first configuration information and second configuration information to a terminal device, wherein the first configuration information comprises information about a first control resource set, and wherein the second configuration information comprises information about a second control resource set; and send first control information to the terminal device in a first control channel candidate set corresponding to the first control resource set; and the second base station is configured to: send second control information to the terminal device in a second control channel candidate set corresponding to the second control resource set, wherein a sum of a size of the first control channel candidate set and a size of the second control channel candidate set is not greater than a first threshold. ### Claim 14 (depends on 13) The base station system according to claim 13, wherein: the first configuration information further comprises first transmission mode information associated with the first control information, and the second configuration information further comprises second transmission mode information associated with the second control information; or the first base station is further configured to send third configuration information to the terminal device, wherein the third configuration information comprises first transmission mode information associated with the first control information and second transmission mode information associated with the second control information. ### Claim 15 (depends on 14) The base station system according to claim 14, wherein: the first transmission mode information is a transmission mode; or the first transmission mode information is one or more of a resource mapping manner, a DMRS scrambling code sequence, and QCL. ### Claim 16 (depends on 14) The base station system according to claim 14, wherein: the second transmission mode information is a transmission mode; or the second transmission mode information is one or more of a resource mapping manner, a demodulation reference signal (DMRS) scrambling code sequence, and quasi co-location (QCL). ### Claim 17 (depends on 13) The base station system according to claim 13, wherein the first control resource set and the second control resource set belong to different carriers.