# US 2019/0246384 A1 · Method for sending control information, apparatus, and system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0246384 A1 - Document ID: US20190246384A1 - Status: Published application - Kind: A1 - Application number: 16/270,677 - Filed: 2019-02-08 - Published: 2019-08-08 - Earliest claimed: 2016-08-12 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Jiafeng SHAO; Chaojun LI; Sha MA - Web page: https://patentgrep.com/patent/US20190246384A1 ## CPC - H04W 72/044: based on the type of the allocated resource - 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 5/0057: {Physical resource allocation for CQI} - H04L 5/0082: {at predetermined intervals} - H04L 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04L 5/0005: {Time-frequency} - 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 A method for sending control information includes: determining, by a network device based on a first time-frequency domain resource for sending first control information, at least one information field included in the first control information; determining, by the network device, a quantity of bits of the first control information based on the at least one information field; and sending, by the network device, the first control information to a user terminal on the first time-frequency domain resource based on the quantity of bits of the first control information. The present application can improve data transmission efficiency. ## Claims ### Claim 1 A method for sending control information, wherein the method comprising: determining, by a network device, at least one information field comprised in first control information based on a first time-frequency domain resource for sending the first control information; determining, by the network device, a quantity of bits of the first control information based on the at least one information field; and sending, by the network device, the first control information to a user terminal on the first time-frequency domain resource based on the quantity of bits of the first control information. ### Claim 2 (depends on 1) The method according to claim 1, wherein the first time-frequency domain resource is a time-frequency domain resource beyond a first time region, wherein the at least one information field comprises a second information field, wherein information carried in the second information field indicates: a time-frequency domain resource not occupied by a downlink control channel, or a time-frequency domain resource occupied by a downlink control channel, or a time-frequency domain resource occupied by a downlink data channel, and wherein the first time region is a time region to which first two symbols in a downlink subframe belong, or is a time region to which first three symbols in a downlink subframe belong, or is a physical downlink control channel (PDCCH) region. ### Claim 3 (depends on 2) The method according to claim 2, wherein the information carried in the second information field indicates the time-frequency domain resource occupied by the downlink control channel, and the information carried in the second information field comprises: control channel elements (CCEs) occupied by the downlink control channel which carries downlink control information (DCI) in a transmission time period, wherein the transmission time period is shorter than or equal to 0.5 ms (milliseconds). ### Claim 4 (depends on 1) The method according to claim 1, wherein the first time-frequency domain resource is a time-frequency domain resource in a transmission time period that is shorter than or equal to 0.5 ms (milliseconds). ### Claim 5 (depends on 1) The method according to claim 1, wherein the first time-frequency domain resource is in a first time region, and wherein the first control information does not include a second information field that indicates a time-frequency domain resource not occupied by a downlink control channel, or a time-frequency domain resource occupied by a downlink control channel, or a time-frequency domain resource occupied by a downlink data channel, and wherein the first time region is a time region to which first two symbols in a downlink subframe belong, or is a time region to which first three symbols in a downlink subframe belong, or is a physical downlink control channel (PDCCH) region. ### Claim 6 (depends on 5) The method according to claim 5, wherein the first time-frequency domain resource comprises at least one of: a time-frequency domain resource in the PDCCH region, a time-frequency domain resource in the time region to which the first two symbols in the downlink subframe belong, or a time-frequency domain resource in the time region to which the first three symbols in the downlink subframe belong. ### Claim 7 A method for detecting control information, the method comprising: determining, by a user terminal, at least one information field comprised in first control information based on a first time-frequency domain resource for detecting the first control information; determining, by the user terminal, a quantity of bits of the first control information based on the at least one information field; detecting, by the user terminal, the first control information on the first time-frequency domain resource based on the quantity of bits of the first control information; and receiving, by the user terminal, the first control information after detecting the first control information. ### Claim 8 (depends on 7) The method according to claim 7, wherein the first time-frequency domain resource is a time-frequency domain resource beyond a first time region, wherein the at least one information field comprises a second information field, wherein information carried in the second information field indicates: a time-frequency domain resource not occupied by a downlink control channel, or a time-frequency domain resource occupied by a downlink control channel, or a time-frequency domain resource occupied by a downlink data channel, and wherein the first time region is a time region to which first two symbols in a downlink subframe belong, or is a time region to which first three symbols in a downlink subframe belong, or is a physical downlink control channel (PDCCH) region. ### Claim 9 (depends on 8) The method according to claim 8, wherein the information carried in the second information field indicates the time-frequency domain resource occupied by the downlink control channel, and the information carried in the second information field comprises: control channel elements (CCEs) occupied by the downlink control channel which carries downlink control information (DCI) in a transmission time period, wherein the transmission time period is shorter than or equal to 0.5 ms (milliseconds). ### Claim 10 (depends on 7) The method according to claim 7, wherein the first time-frequency domain resource is a time-frequency domain resource in a transmission time period that is shorter than or equal to 0.5 ms (milliseconds). ### Claim 11 (depends on 7) The method according to claim 7, wherein the first time-frequency domain resource is in a first time region, and wherein the first control information does not include a second information field that indicates a time-frequency domain resource not occupied by a downlink control channel, or a time-frequency domain resource occupied by a downlink control channel, or a time-frequency domain resource occupied by a downlink data channel, and wherein the first time region is a time region to which first two symbols in a downlink subframe belong, or is a time region to which first three symbols in a downlink subframe belong, or is a physical downlink control channel (PDCCH) region. ### Claim 12 (depends on 11) The method according to claim 11, wherein the first time-frequency domain resource comprises at least one of: a time-frequency domain resource in the PDCCH region, a time-frequency domain resource in the time region to which the first two symbols in the downlink subframe belong, or a time-frequency domain resource in the time region to which the first three symbols in the downlink subframe belong. ### Claim 13 A network device, comprising: a processor, configured to: determine, based on a first time-frequency domain resource for sending first control information, at least one information field comprised in the first control information; and determine a quantity of bits of the first control information based on the at least one information field; and a sending circuit, configured to send the first control information to a user terminal on the first time-frequency domain resource based on the quantity of bits of the first control information. ### Claim 14 (depends on 13) The network device according to claim 13, wherein the first time-frequency domain resource is a time-frequency domain resource beyond a first time region, wherein the at least one information field comprises a second information field, wherein information carried in the second information field is used to indicates: a time-frequency domain resource not occupied by a downlink control channel, or a time-frequency domain resource occupied by a downlink control channel, or a time-frequency domain resource occupied by a downlink data channel, and wherein the first time region is a time region to which first two symbols in a downlink subframe belong, or is a time region to which first three symbols in a downlink subframe belong, or is a physical downlink control channel (PDCCH) region. ### Claim 15 (depends on 14) The network device according to claim 14, wherein the information carried in the second information field indicates the time-frequency domain resource occupied by the downlink control channel, and the information carried in the second information field comprises: control channel elements (CCEs) occupied by the downlink control channel which carries downlink control information (DCI) in a transmission time period, wherein the transmission time period is shorter than or equal to 0.5 ms (milliseconds). ### Claim 16 (depends on 13) The network device according to claim 13, wherein the first time-frequency domain resource is a time-frequency domain resource in a transmission time period that is shorter than or equal to 0.5 ms (milliseconds). ### Claim 17 (depends on 13) The network device according to claim 13, wherein the first time-frequency domain resource is in a first time region, and wherein the first control information does not include a second information field that indicates a time-frequency domain resource not occupied by a downlink control channel, or a time-frequency domain resource occupied by a downlink control channel, or a time-frequency domain resource occupied by a downlink data channel, and wherein the first time region is a time region to which first two symbols in a downlink subframe belong, or is a time region to which first three symbols in a downlink subframe belong, or is a physical downlink control channel (PDCCH) region. ### Claim 18 (depends on 17) The network device according to claim 17, wherein the first time-frequency domain resource comprises at least one of: a time-frequency domain resource in the PDCCH region, a time-frequency domain resource in the time region to which the first two symbols in the downlink subframe belong, or a time-frequency domain resource in the time region to which the first three symbols in the downlink subframe belong. ### Claim 19 A user terminal, comprising: a processor, configured to: determine, based on a first time-frequency domain resource for detecting first control information, at least one information field comprised in the first control information; wherein determine a quantity of bits of the first control information based on the at least one information field; detect the first control information on the first time-frequency domain resource based on the quantity of bits of the first control information; and a receiving circuit, configured to receive the first control information after the processor detects the first control information. ### Claim 20 (depends on 19) The user terminal according to claim 19, wherein the first time-frequency domain resource is a time-frequency domain resource beyond a first time region, wherein the at least one information field comprises a second information field, wherein information carried in the second information field indicates: a time-frequency domain resource not occupied by a downlink control channel, or a time-frequency domain resource occupied by a downlink control channel, or a time-frequency domain resource occupied by a downlink data channel, and wherein the first time region is a time region to which first two symbols in a downlink subframe belong, or is a time region to which first three symbols in a downlink subframe belong, or is a physical downlink control channel (PDCCH) region. ### Claim 21 (depends on 20) The user terminal according to claim 20, wherein the information carried in the second information field indicates the time-frequency domain resource occupied by the downlink control channel, and the information carried in the second information field comprises: control channel elements (CCEs) occupied by the downlink control channel which carries downlink control information (DCI) in a transmission time period, wherein the transmission time period is shorter than or equal to 0.5 ms (milliseconds). ### Claim 22 (depends on 19) The user terminal according to claim 19, wherein the first time-frequency domain resource is a time-frequency domain resource in a transmission time period that is shorter than or equal to 0.5 ms (milliseconds). ### Claim 23 (depends on 19) The user terminal according to claim 19, wherein the first time-frequency domain resource is in a first time region, and wherein the first control information does not comprises include a second information field that indicates a time-frequency domain resource not occupied by a downlink control channel, or a time-frequency domain resource occupied by a downlink control channel, or a time-frequency domain resource occupied by a downlink data channel, and wherein the first time region is a time region to which first two symbols in a downlink subframe belong, or is a time region to which first three symbols in a downlink subframe belong, or is a physical downlink control channel (PDCCH) region. ### Claim 24 (depends on 23) The user terminal according to claim 23, wherein the first time-frequency domain resource comprises at least one of: a time-frequency domain resource in the PDCCH region, a time-frequency domain resource in the time region to which the first two symbols in the downlink subframe belong, or a time-frequency domain resource in the time region to which the first three symbols in the downlink subframe belong.