# US 12,003,996 B2 · Measurement method, indication method, apparatus, terminal, network device, and medium > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,003,996 B2 - Document ID: US12003996B2 - Status: Granted - Kind: B2 - Application number: 17/316,795 - Filed: 2021-05-11 - Published: 2021-08-26 - Granted: 2024-06-04 - Earliest claimed: 2018-11-12 - Assignees: Vivo Mobile Communication Co., Ltd. - Applicants: Vivo Mobile Communication Co., Ltd. - Inventors: Kai Wu; Xueming Pan - Web page: https://patentgrep.com/patent/US12003996B2 ## CPC - H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports} - H04B 17/382: for resource allocation, admission control or handover - 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 5/006: {Quality of the received signal, e.g. BER, SNR, water filling} - 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 56/001: {Synchronization between nodes} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04J 11/0069: {Cell search, i.e. determining cell identity [cell-ID] (design of multiplexing codes H04J13/00; processing access restriction or access information H04W48/16; discovery of network devices for network data management H04W8/005; sounding signals for channel estimation H04L25/0226; structure of reference signals in multicarrier modulation systems H04L27/2613; frame, time or carrier synchronisation in multicarrier modulation systems H04L27/2655)} - Y02D 30/70: in wireless communication networks - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04B: TRANSMISSION - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04J: MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N7/08; in exchanges H04Q11/00; stereophonic systems H04S) - 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 A measurement method includes: determining a demodulation reference signal (DMRS) of a physical downlink control channel (PDCCH) used for radio resource management (RRM) measurement; and performing RRM measurement according to the DMRS. ## Claims ### Claim 1 A measurement method for radio resource management, the method comprising: determining, by a terminal, a demodulation reference signal (DMRS) of a physical downlink control channel (PDCCH) used for radio resource management (RRM) measurement; and performing, by the terminal, RRM measurement according to the DMRS; wherein the DMRS used for the RRM measurement is determined according to higher layer signaling; and the method further comprises: determining, according to the higher layer signaling, whether the terminal is allowed to perform the RRM measurement according to the DMRS of the PDCCH; wherein the higher layer signaling comprises an indication of a synchronization signal block measurement timing configuration (SMTC) used for RRM measurement, and the DMRS for performing the RRM measurement comprises: a DMRS of a PDCCH associated with a synchronization signal block (SSB) comprised in a time window indicated by the SMTC; and/or the higher layer signaling comprises an indication of the SSB actually transmitted in the serving cell, and the DMRS for performing the RRM measurement comprises: a DMRS of a PDCCH associated with the SSB actually transmitted in the serving cell. ### Claim 2 (depends on 1) The method according to claim 1, further comprising: performing, by the terminal, RRM measurement according to the SSB; and obtaining, by the terminal, a to-be-reported RRM measurement result according to two RRM measurement results, wherein the two RRM measurement results are: a measurement result obtained by performing RRM measurement according to the DMRS and a measurement result obtained by performing RRM measurement according to the SSB. ### Claim 3 (depends on 2) The method according to claim 2, wherein calculating, by the terminal, the to-be-reported RRM measurement result according to a ratio between power of the SSB and power of a resource element (RE) of the DMRS and the two RRM measurement results. ### Claim 4 (depends on 2) The method according to claim 2, wherein the SSB comprises: an SSB comprised in a time window indicated by the SMTC or an SSB actually transmitted in a serving cell; or the SSB comprises: a union set of an SSB comprised in the time window indicated by the SMTC and an SSB actually transmitted in a serving cell; or the SSB comprises: an intersection set of an SSB comprised in a time window indicated by an SMTC and an SSB actually transmitted in a serving cell. ### Claim 5 (depends on 2) The method according to claim 2, wherein the DMRS for performing the RRM measurement and the SSB for performing the RRM measurement are quasi-co-located (QCL). ### Claim 6 (depends on 1) The method according to claim 1, wherein the DMRS for performing the RRM measurement comprises: a DMRS of a paging PDCCH monitored by the terminal and/or a DMRS of a PDCCH for scheduling system information; or the DMRS for performing the RRM measurement comprises: a DMRS of a PDCCH that higher layer signaling instructs to monitor. ### Claim 7 (depends on 1) The method according to claim 1, wherein it is determined whether a DMRS for monitoring a PDCCH in a control resource set (CORESET) is a wideband DMRS according to the higher layer signaling; and the wideband DMRS is used as the DMRS for performing the RRM measurement. ### Claim 8 (depends on 1) The method according to claim 1, wherein the RRM measurement is used for at least one of intra-frequency measurement, inter-frequency measurement, inter-RAT measurement, serving cell measurement, or camped cell measurement. ### Claim 9 A terminal, comprising: a processor and a memory storing computer program instructions; wherein the computer program instructions, when executed by the processor, cause the terminal to perform: determining a demodulation reference signal (DMRS) of a physical downlink control channel (PDCCH) used for radio resource management (RRM) measurement; and performing RRM measurement according to the DMRS; wherein the DMRS used for the RRM measurement is determined according to higher layer signaling; and the computer program instructions, when executed by the processor, cause the terminal to further perform: determining, according to the higher layer signaling, whether the terminal is allowed to perform the RRM measurement according to the DMRS of the PDCCH; wherein the higher layer signaling comprises an indication of a synchronization signal block measurement timing configuration SMTC used for RRM measurement, and the DMRS for performing the RRM measurement comprises: a DMRS of a PDCCH associated with a synchronization signal block (SSB) comprised in a time window indicated by the SMTC, and/or the higher layer signaling comprises an indication of the SSB actually transmitted in the serving cell, and the DMRS for performing the RRM measurement comprises: a DMRS of a PDCCH associated with the SSB actually transmitted in the serving cell. ### Claim 10 (depends on 9) The terminal according to claim 9, wherein the computer program instructions, when executed by the processor, cause the terminal to further perform: performing RRM measurement according to the SSB; a synchronization signal block (SSB); and obtaining a to-be-reported RRM measurement result according to two RRM measurement results; wherein the two RRM measurement results are: a measurement result obtained by performing RRM measurement according to the DMRS and a measurement result obtained by performing RRM measurement according to the SSB. ### Claim 11 (depends on 10) The terminal according to claim 10, wherein the computer program instructions, when executed by the processor, cause the terminal to further perform: calculating the to-be-reported RRM measurement result according to a ratio between power of the SSB and power of a resource element (RE) of the DMRS and the two RRM measurement results. ### Claim 12 (depends on 10) The terminal according to claim 10, wherein the SSB comprises: an SSB comprised in the time window indicated by the SMTC or an SSB actually transmitted in a serving cell; or the SSB comprises: a union set of an SSB comprised in the time window indicated by the SMTC and the SSB actually transmitted in a serving cell; or the SSB comprises: an intersection set of an SSB comprised in the time window indicated by the SMTC and the SSB actually transmitted in a serving cell. ### Claim 13 (depends on 10) The terminal according to claim 10, wherein the DMRS for performing the RRM measurement and the SSB for performing the RRM measurement are quasi-co-located (QCL). ### Claim 14 (depends on 9) The terminal according to claim 9, wherein the DMRS for performing the RRM measurement comprises: a DMRS of a paging PDCCH monitored by the terminal and/or a DMRS of a PDCCH for scheduling system information; or the DMRS for performing the RRM measurement comprises: a DMRS of a PDCCH that higher layer signaling instructs to monitor. ### Claim 15 (depends on 9) The terminal according to claim 9, wherein the RRM measurement is used for at least one of intra-frequency measurement, inter-frequency measurement, inter-RAT measurement, serving cell measurement, or camped cell measurement. ### Claim 16 (depends on 9) The terminal according to claim 9, wherein it is determined whether a DMRS for monitoring a PDCCH in a control resource set (CORESET) is a wideband DMRS according to the higher layer signaling; and the wideband DMRS is used as the DMRS for performing the RRM measurement. ### Claim 17 A network device, comprising: a processor and a memory storing computer program instructions; wherein the computer program instructions, when executed by the processor, cause the network device to perform: indicating a demodulation reference signal (DMRS) of a physical downlink control channel (PDCCH) used for radio resource management (RRM) measurement by a terminal; wherein the DMRS used for the RRM measurement is indicated by using higher layer signaling; and the method further comprises: indicating, by using the higher layer signaling, whether to allow the terminal to perform the RRM measurement according to the DMRS of the PDCCH; wherein the higher layer signaling comprises an indication of a synchronization signal block measurement timing configuration (SMTC) used for RRM measurement, and the DMRS for performing the RRM measurement comprises: a DMRS of a PDCCH associated with a synchronization signal block (SSB) comprised in a time window indicated by the SMTC; and/or the higher layer signaling comprises an indication of the SSB actually transmitted in the serving cell, and the DMRS for performing the RRM measurement comprises: a DMRS of a PDCCH associated with the SSB actually transmitted in the serving cell.