# US 11,445,568 B2 · Communication method and communications apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,445,568 B2 - Document ID: US11445568B2 - Status: Granted - Kind: B2 - Application number: 17/513,869 - Filed: 2021-10-28 - Published: 2022-02-17 - Granted: 2022-09-13 - Earliest claimed: 2019-04-30 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Zhanzhan Zhang; Xiaolei Tie; Han Zhou - Web page: https://patentgrep.com/patent/US11445568B2 ## CPC - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04W 76/28: Discontinuous transmission [DTX]; Discontinuous reception [DRX] - 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 24/08: Testing, {supervising or monitoring} using real traffic - H04W 52/0216: {using a pre-established activity schedule, e.g. traffic indication frame} - H04W 52/0229: {where the received signal is a wanted signal} - H04W 52/0235: {where the received signal is a power saving command} - H04W 52/0274: {by switching on or off the equipment or parts thereof} - Y02D 30/70: in wireless communication networks - 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) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract The present disclosure relates to communication methods and communications apparatus. One example method includes determining, based on a receiving status of a first power saving signal, that a physical downlink control channel (PDCCH) is not detected within a first discontinuous reception (DRX) cycle, and performing, in a first time period within the first DRX cycle, radio resource management (RRM) measurement on a channel state information reference signal (CSI-RS) sent by a network device. ## Claims ### Claim 1 A communication method, comprising: receiving a first power saving signal; determining, based on first indication information in the first power saving signal, not to start an on duration timer and not to detect physical downlink control channel (PDCCH) during a preconfigured on duration within a first discontinuous reception (DRX) cycle; and performing, in the preconfigured on duration within the first DRX cycle, radio resource management (RRM) measurement on a channel state information reference signal (CSI-RS) sent by a network device. ### Claim 2 (depends on 1) The method according to claim 1, wherein the receiving a first power saving signal comprises: receiving the first power saving signal in a preconfigured second time period that is before the first DRX cycle. ### Claim 3 (depends on 1) The method according to claim 1, wherein the determining, based on first indication information in the first power saving signal, not to start the on duration timer and not to detect PDCCH during the preconfigured on duration within a first DRX cycle comprises: when the first indication information is a bit 0, determining not to start the on duration timer and not to detect PDCCH during the preconfigured on duration within the first DRX cycle. ### Claim 4 (depends on 1) The method according to claim 1, further comprising: receiving a second power saving signal; determining, based on second indication information in the second power saving signal, to detect PDCCH within a second DRX cycle; and performing, in a third time period within the second DRX cycle, RRM measurement on a second CSI-RS sent by the network device. ### Claim 5 (depends on 4) The method according to claim 4, wherein the third time period is an active time within the second DRX cycle. ### Claim 6 (depends on 4) The method according to claim 4, wherein the receiving a second power saving signal comprises: receiving the second power saving signal in a preconfigured fourth time period that is before the second DRX cycle. ### Claim 7 (depends on 4) The method according to claim 4, wherein the determining, based on second indication information in the second power saving signal, to detect PDCCH within a second DRX cycle comprises: when the second indication information is a bit 1, determining to detect PDCCH within the second DRX cycle. ### Claim 8 A communications apparatus, comprising: one or more processors; and a memory coupled to the one or more processors and storing programming instructions for execution by the one or more processors to cause the communications apparatus to: receive a first power saving signal; determine, based on first indication information in the first power saving signal, not to start an on duration timer and not to detect physical downlink control channel (PDCCH) during a preconfigured on duration within a first discontinuous reception (DRX) cycle; and perform, in the preconfigured on duration within the first DRX cycle, radio resource management (RRM) measurement on a channel state information reference signal (CSI-RS) sent by a network device. ### Claim 9 (depends on 8) The communications apparatus according to claim 8, wherein the programming instructions are for execution by the one or more processors to further cause the communications apparatus to: receive the first power saving signal in a preconfigured second time period that is before the first DRX cycle. ### Claim 10 (depends on 8) The communications apparatus according to claim 8, wherein the programming instructions are for execution by the one or more processors to further cause the communications apparatus to: when the first indication information is a bit 0, determine not to start the on duration timer and not to detect PDCCH during the preconfigured on duration within the first DRX cycle. ### Claim 11 (depends on 8) The communications apparatus according to claim 8, wherein the programming instructions are for execution by the one or more processors to further cause the communications apparatus to: receive a second power saving signal; determine, based on second indication information in the second power saving signal, to detect PDCCH within a second DRX cycle; and perform, in a third time period within the second DRX cycle, RRM measurement on a second CSI-RS sent by the network device. ### Claim 12 (depends on 11) The communications apparatus according to claim 11, wherein the third time period is an active time within the second DRX cycle. ### Claim 13 (depends on 11) The communications apparatus according to claim 11, wherein the programming instructions are for execution by the one or more processors to further cause the communications apparatus to: receive the second power saving signal in a preconfigured fourth time period that is before the second DRX cycle. ### Claim 14 (depends on 11) The communications apparatus according to claim 11, wherein the programming instructions are for execution by the one or more processors to further cause the communications apparatus to: when the second indication information is a bit 1, determine not to detect PDCCH within the second DRX cycle. ### Claim 15 A non-transitory computer-readable storage medium comprising instructions which, when executed by a computer, cause the computer to perform operations comprising: receiving a first power saving signal; determining, based on first indication information in the first power saving signal, not to start an on duration timer and not to detect physical downlink control channel (PDCCH) during a preconfigured on duration within a first discontinuous reception (DRX) cycle; and performing, in the preconfigured on duration within the first DRX cycle, radio resource management (RRM) measurement on a channel state information reference signal (CSI-RS) sent by a network device. ### Claim 16 (depends on 15) The non-transitory computer-readable storage medium according to claim 15, wherein the determining, based on first indication information in the first power saving signal, not to start the on duration timer and not to detect PDCCH during the preconfigured on duration within a first DRX cycle comprises: when the first indication information is a bit 0, determining not to start the on duration timer and not to detect PDCCH during the preconfigured on duration within the first DRX cycle. ### Claim 17 (depends on 15) The non-transitory computer-readable storage medium according to claim 15, wherein the operations further comprise: receiving a second power saving signal; determining, based on second indication information in the second power saving signal, to detect PDCCH within a second DRX cycle; and performing, in a third time period within the second DRX cycle, RRM measurement on a second CSI-RS sent by the network device. ### Claim 18 (depends on 17) The non-transitory computer-readable storage medium according to claim 17, wherein the determining, based on second indication information in the second power saving signal, to detect PDCCH within a second DRX cycle comprises: when the second indication information is a bit 1, determining to detect PDCCH within the second DRX cycle. ### Claim 19 (depends on 17) The non-transitory computer-readable storage medium according to claim 17, wherein the third time period is an active time within the second DRX cycle. ### Claim 20 (depends on 17) The non-transitory computer-readable storage medium according to claim 17, wherein the receiving a second power saving signal comprises: receiving the second power saving signal in a preconfigured fourth time period that is before the second DRX cycle. ### Claim 21 (depends on 15) The non-transitory computer-readable storage medium according to claim 15, wherein the receiving a first power saving signal comprises: receiving the first power saving signal in a preconfigured second time period that is before the first DRX cycle.