# US 2023/0056664 A1 · Communication method and apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0056664 A1 - Document ID: US20230056664A1 - Status: Published application - Kind: A1 - Application number: 18/045,823 - Filed: 2022-10-11 - Published: 2023-02-23 - Earliest claimed: 2020-04-17 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Meng Hua; Yi Long; Jinlin Peng - Web page: https://patentgrep.com/patent/US20230056664A1 ## CPC - H04W 72/044: based on the type of the allocated resource - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04L 1/0013: {Rate matching, e.g. puncturing or repetition of code symbols} - H04L 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal} - H04L 5/0094: {Indication of how sub-channels of the path are allocated} - 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 - H04L 5/0044: {Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH} - 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)} - 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 communication method and apparatus are provided. The communication method includes: A terminal receives, from a network device, configuration information indicating a first time-frequency resource and downlink control information indicating a second time-frequency resource. The first time-frequency resource cannot be used to transmit a downlink data channel and a demodulation reference signal for the downlink data channel, and the second time-frequency resource includes a resource used to transmit the downlink data channel and the demodulation reference signal for the downlink data channel. When determining that a time domain resource of the first time-frequency resource includes a time domain resource of the second time-frequency resource, the terminal receives the downlink data channel and the demodulation reference signal for the downlink data channel on a third time-frequency resource. ## Claims ### Claim 1 A communication method, applied to a terminal or a chip of the terminal, comprising: receiving configuration information from a network device, the configuration information indicating a first time-frequency resource, and the first time-frequency resource cannot be used to transmit a downlink data channel; determining that the first time-frequency resource belongs to a first-type time-frequency resource or a second-type time-frequency resource; and if the first time-frequency resource belongs to the first-type time-frequency resource, determining not to monitor a downlink control channel candidate, or determining that a downlink control channel detected on a downlink control channel candidate is invalid, the downlink control channel candidate overlapping the first time-frequency resource; or if the first time-frequency resource belongs to the second-type time-frequency resource, monitoring at least one downlink control channel candidate, or determining that a downlink control channel detected on the at least one downlink control channel candidate is valid, the at least one downlink control channel candidate overlapping the first time-frequency resource. ### Claim 2 (depends on 1) The method according to claim 1, wherein the determining that the first time-frequency resource belongs to the first-type time-frequency resource comprises: if it is determined that the first time-frequency resource is not allowed to overlap a resource in a second time-frequency resource that is of a demodulation reference signal for the downlink data channel and that is indicated by a frequency domain resource indication information, determining that the first time-frequency resource belongs to the first-type time-frequency resource, the second time-frequency resource transmits the downlink data channel and the demodulation reference signal for the downlink data channel, a frequency domain resource of the second time-frequency resource is indicated by the frequency domain resource indication information in the downlink control channel, and a time domain resource of the second time-frequency resource is indicated by time domain resource indication information in the downlink control channel. ### Claim 3 (depends on 1) The method according to claim 1, wherein the determining, by the terminal, that the first time-frequency resource belongs to the second-type time-frequency resource comprises: if it is determined that the first time-frequency resource is allowed to overlap a resource in the second time-frequency resource that is of the demodulation reference signal for the downlink data channel and that is indicated by a frequency domain resource indication information, and the resource that is allowed to overlap is not used to transmit the demodulation reference signal for the downlink data channel, determining that the first time-frequency resource belongs to the second-type time-frequency resource, the second time-frequency resource transmits the downlink data channel and the demodulation reference signal for the downlink data channel, the frequency domain resource of the second time-frequency resource is indicated by the frequency domain resource indication information in the downlink control channel, and the time domain resource of the second time-frequency resource is indicated by the time domain resource indication information in the downlink control channel. ### Claim 4 (depends on 1) The method according to claim 1, wherein the first time-frequency resource is allowed to overlap a resource in a second time-frequency resource that is of a demodulation reference signal for the downlink data channel and that is indicated by a frequency domain resource indication information, the overlapped resource is not used to transmit the demodulation reference signal for the downlink data channel, a frequency domain resource of the second time-frequency resource is indicated by the frequency domain resource indication information in the downlink control channel, a time domain resource of the second time-frequency resource is indicated by time domain resource indication information in the downlink control channel, and the method further comprises: receiving indication information from the network device, the indication information indicating that the first time-frequency resource belongs to the first-type time-frequency resource or the second-type time-frequency resource. ### Claim 5 (depends on 1) The method according to claim 1, wherein the first time-frequency resource belongs to resources corresponding to a group of rate matching patterns, and the resources corresponding to the group of rate matching patterns are indicated by downlink control information that cannot be used to transmit the downlink data channel. ### Claim 6 An apparatus, comprising: a memory storing instructions; and at least one processor in communication with the memory, the at least one processor configured, upon execution of the instructions, to perform the following steps: receiving configuration information from a network device, the configuration information indicating a first time-frequency resource, and the first time-frequency resource cannot be used to transmit a downlink data channel; determining that the first time-frequency resource belongs to a first-type time-frequency resource or a second-type time-frequency resource; and if the first time-frequency resource belongs to the first-type time-frequency resource, determining not to monitor a downlink control channel candidate, or determining that a downlink control channel detected on a downlink control channel candidate is invalid, the downlink control channel candidate overlapping the first time-frequency resource; or if the first time-frequency resource belongs to the second-type time-frequency resource, monitoring at least one downlink control channel candidate, or determining that a downlink control channel detected on the at least one downlink control channel candidate is valid, the at least one downlink control channel candidate overlapping the first time-frequency resource. ### Claim 7 (depends on 6) The apparatus according to claim 6, wherein the determining that the first time-frequency resource belongs to the first-type time-frequency resource comprises: if it is determined that the first time-frequency resource is not allowed to overlap a resource in a second time-frequency resource that is of a demodulation reference signal for the downlink data channel and that is indicated by a frequency domain resource indication information, determining that the first time-frequency resource belongs to the first-type time-frequency resource, the second time-frequency resource transmits the downlink data channel and the demodulation reference signal for the downlink data channel, a frequency domain resource of the second time-frequency resource is indicated by the frequency domain resource indication information in the downlink control channel, and a time domain resource of the second time-frequency resource is indicated by time domain resource indication information in the downlink control channel. ### Claim 8 (depends on 6) The apparatus according to claim 6, wherein the determining, by the terminal, that the first time-frequency resource belongs to the second-type time-frequency resource comprises: if it is determined that the first time-frequency resource is allowed to overlap a resource in the second time-frequency resource that is of the demodulation reference signal for the downlink data channel and that is indicated by a frequency domain resource indication information, and the resource that is allowed to overlap is not used to transmit the demodulation reference signal for the downlink data channel, determining that the first time-frequency resource belongs to the second-type time-frequency resource, the second time-frequency resource transmits the downlink data channel and the demodulation reference signal for the downlink data channel, the frequency domain resource of the second time-frequency resource is indicated by the frequency domain resource indication information in the downlink control channel, and the time domain resource of the second time-frequency resource is indicated by the time domain resource indication information in the downlink control channel. ### Claim 9 (depends on 6) The apparatus according to claim 6, wherein the first time-frequency resource is allowed to overlap a resource in a second time-frequency resource that is of a demodulation reference signal for the downlink data channel and that is indicated by a frequency domain resource indication information, the overlapped resource is not used to transmit the demodulation reference signal for the downlink data channel, a frequency domain resource of the second time-frequency resource is indicated by the frequency domain resource indication information in the downlink control channel, a time domain resource of the second time-frequency resource is indicated by time domain resource indication information in the downlink control channel, and the method further comprises: receiving indication information from the network device, the indication information indicating that the first time-frequency resource belongs to the first-type time-frequency resource or the second-type time-frequency resource. ### Claim 10 (depends on 6) The apparatus according to claim 6, wherein the first time-frequency resource belongs to resources corresponding to a group of rate matching patterns, and the resources corresponding to the group of rate matching patterns are indicated by downlink control information that cannot be used to transmit the downlink data channel. ### Claim 11 A non-transitory computer readable media storing computer instructions that configure at least one processor, upon execution of the instructions, to perform the following steps: receiving configuration information from a network device, the configuration information indicating a first time-frequency resource, and the first time-frequency resource cannot be used to transmit a downlink data channel; determining that the first time-frequency resource belongs to a first-type time-frequency resource or a second-type time-frequency resource; and if the first time-frequency resource belongs to the first-type time-frequency resource, determining not to monitor a downlink control channel candidate, or determining that a downlink control channel detected on a downlink control channel candidate is invalid, the downlink control channel candidate overlapping the first time-frequency resource; or if the first time-frequency resource belongs to the second-type time-frequency resource, monitoring at least one downlink control channel candidate, or determining that a downlink control channel detected on the at least one downlink control channel candidate is valid, the at least one downlink control channel candidate overlapping the first time-frequency resource. ### Claim 12 (depends on 11) The non-transitory computer readable medium according to claim 11, wherein the determining that the first time-frequency resource belongs to the first-type time-frequency resource comprises: if it is determined that the first time-frequency resource is not allowed to overlap a resource in a second time-frequency resource that is of a demodulation reference signal for the downlink data channel and that is indicated by a frequency domain resource indication information, determining that the first time-frequency resource belongs to the first-type time-frequency resource, the second time-frequency resource transmits the downlink data channel and the demodulation reference signal for the downlink data channel, a frequency domain resource of the second time-frequency resource is indicated by the frequency domain resource indication information in the downlink control channel, and a time domain resource of the second time-frequency resource is indicated by time domain resource indication information in the downlink control channel. ### Claim 13 (depends on 11) The non-transitory computer readable medium according to claim 11, wherein the determining, by the terminal, that the first time-frequency resource belongs to the second-type time-frequency resource comprises: if it is determined that the first time-frequency resource is allowed to overlap a resource in the second time-frequency resource that is of the demodulation reference signal for the downlink data channel and that is indicated by a frequency domain resource indication information, and the resource that is allowed to overlap is not used to transmit the demodulation reference signal for the downlink data channel, determining that the first time-frequency resource belongs to the second-type time-frequency resource, the second time-frequency resource transmits the downlink data channel and the demodulation reference signal for the downlink data channel, the frequency domain resource of the second time-frequency resource is indicated by the frequency domain resource indication information in the downlink control channel, and the time domain resource of the second time-frequency resource is indicated by the time domain resource indication information in the downlink control channel. ### Claim 14 (depends on 13) The non-transitory computer readable medium according to claim 13, wherein the first time-frequency resource is allowed to overlap a resource in a second time-frequency resource that is of a demodulation reference signal for the downlink data channel and that is indicated by the frequency domain resource indication information, the overlapped resource is not used to transmit the demodulation reference signal for the downlink data channel, a frequency domain resource of the second time-frequency resource is indicated by the frequency domain resource indication information in the downlink control channel, a time domain resource of the second time-frequency resource is indicated by time domain resource indication information in the downlink control channel, and the method further comprises: receiving indication information from the network device, the indication information indicating that the first time-frequency resource belongs to the first-type time-frequency resource or the second-type time-frequency resource. ### Claim 15 (depends on 11) The non-transitory computer readable medium according to claim 11, wherein the first time-frequency resource belongs to resources corresponding to a group of rate matching patterns, and the resources corresponding to the group of rate matching patterns are indicated by downlink control information that cannot be used to transmit the downlink data channel.