# US 2020/0288340 A1 · Methods and procedures for channel measurements and reporting mechanisms > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0288340 A1 - Document ID: US20200288340A1 - Status: Published application - Kind: A1 - Application number: 16/846,577 - Filed: 2020-04-13 - Published: 2020-09-10 - Earliest claimed: 2014-11-14 - Assignees: InterDigital Patent Holdings, Inc. - Applicants: Interdigital Patent Holdings, Inc. - Inventors: Pouriya Sadeghi; Janet A. Stern-Berkowitz; Moon-il Lee; J. Patrick Tooher; Marian Rudolf - Web page: https://patentgrep.com/patent/US20200288340A1 ## CPC - H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports} - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04B 7/0626: {Channel coefficients, e.g. channel state information [CSI]} - H04L 5/001: {the frequencies being arranged in component carriers} - H04L 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal} - H04L 27/0006: {Assessment of spectral gaps suitable for allocating digitally modulated signals, e.g. for carrier allocation in cognitive radio (for spectrum sharing between different networks H04W16/14)} - H04W 16/14: Spectrum sharing arrangements {between different networks} - H04W 48/12: using downlink control channel - H04W 88/06: adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals - 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) ## Abstract A wireless transmit/receive unit (WTRU) may receive configuration information indicating a plurality of sets of resource elements (REs). Each of the plurality of sets of REs may be associated with a Channel-State-Information Reference Signal (CSI-RS) configuration. Also, the WTRU may receive a request in a Downlink Control Information (DCI) signal, in a first time unit, to receive at least one CSI-RS, in at least one set of the plurality of sets of REs, in the first time unit, to perform a measurement and to report the measurement; and the request may indicate the at least one set of the plurality of sets of REs. Further, the WTRU may receive the at least one CSI-RS, in the at least one set of the plurality of sets of REs, in the first time unit, according to the request. Moreover, the WTRU may perform the measurement of the at least one CSI-RS. ## Claims ### Claim 1 A method performed in a wireless transmit/receive unit (WTRU), the method comprising: receiving configuration information indicating a plurality of sets of resource elements (REs), wherein each of the plurality of sets of REs is associated with a Channel-State-Information Reference Signal (CSI-RS) configuration; receiving a request in a Downlink Control Information (DCI) signal, in a first time unit, to receive at least one CSI-RS, in at least one set of the plurality of sets of REs, in the first time unit, to perform a measurement and to report the measurement, wherein the request indicates the at least one set of the plurality of sets of REs; receiving the at least one CSI-RS, in the at least one set of the plurality of sets of REs, in the first time unit, according to the request; performing the measurement of the at least one CSI-RS; and transmitting, in at least one of the first time unit and a second time unit, a measurement report based on the performed measurement. ### Claim 2 (depends on 1) The method of claim 1, wherein the measurement report includes an identification of the first time unit used to receive the at least one CSI-RS. ### Claim 3 (depends on 1) The method of claim 1, wherein the measurement report includes an identification of a System Frame Number (SFN). ### Claim 4 (depends on 1) The method of claim 1, wherein the first time unit is a first subframe and the second time unit is a second subframe. ### Claim 5 (depends on 4) The method of claim 4, wherein the first subframe includes a first plurality of slots and the second subframe includes a second plurality of slots. ### Claim 6 (depends on 1) The method of claim 1, the first time unit is a first slot and the second time unit is a second slot. ### Claim 7 A wireless transmit/receive unit (WTRU) configured to operate on a frequency band, the WTRU comprising: a processor; and a transceiver operatively coupled to the processor; wherein: the transceiver is configured to receive configuration information indicating a plurality of sets of resource elements (REs), wherein each of the plurality of sets of REs is associated with a Channel-State-Information Reference Signal (CSI-RS) configuration; the transceiver is configured to receive a request in a Downlink Control Information (DCI) signal, in a first time unit, to receive at least one CSI-RS, in at least one set of the plurality of sets of REs, in the first time unit, to perform a measurement and to report the measurement, wherein the request indicates the at least one set of the plurality of sets of REs; the transceiver is configured to receive the at least one CSI-RS, in the at least one set of the plurality of sets of REs, in the first time unit, according to the request; the transceiver and the processor are configured to perform the measurement of the at least one CSI-RS; and the transceiver and the processor are configured to transmit, in at least one of the first time unit and a second time unit, a measurement report based on the performed measurement. ### Claim 8 (depends on 7) The WTRU of claim 7, wherein the measurement report includes an identification of the first time unit used to receive the at least one CSI-RS. ### Claim 9 (depends on 7) The WTRU of claim 7, wherein the measurement report includes an identification of a System Frame Number (SFN). ### Claim 10 (depends on 7) The WTRU of claim 7, wherein the first time unit is a first subframe and the second time unit is a second subframe. ### Claim 11 (depends on 10) The WTRU of claim 10, wherein the first subframe includes a first plurality of slots and the second subframe includes a second plurality of slots. ### Claim 12 (depends on 7) The WTRU of claim 7, wherein the first time unit is a first slot and the second time unit is a second slot. ### Claim 13 A base station comprising: a processor; and a transceiver operatively coupled to the processor; wherein: the processor and the transceiver are configured to transmit, to a wireless transmit/receive unit (WTRU), configuration information indicating a plurality of sets of resource elements (REs), wherein each of the plurality of sets of REs is associated with a Channel-State-Information Reference Signal (CSI-RS) configuration; the processor is configured to select at least one set of the plurality of sets of REs; the processor and the transceiver are configured to transmit, to the WTRU, a request in a Downlink Control Information (DCI) signal, in a first time unit, to receive at least one CSI-RS, in the selected at least one set of the plurality of sets of REs, in the first time unit, to perform a measurement and to report the measurement, wherein the request indicates the at least one set of the plurality of sets of REs; the processor and the transceiver are configured to transmit, to the WTRU, the at least one CSI-RS, in the selected at least one set of the plurality of sets of REs, in the first time unit, according to the request; and the transceiver configured to receive, from the WTRU, in at least one of the first time unit and a second time unit, a measurement report responsive to the request. ### Claim 14 (depends on 13) The base station of claim 13, wherein the measurement report includes an identification of the first time unit used to receive the at least one CSI-RS. ### Claim 15 (depends on 13) The base station of claim 13, wherein the measurement report includes an identification of a System Frame Number (SFN). ### Claim 16 (depends on 13) The base station of claim 13, wherein the first time unit is a first subframe and the second time unit is a second subframe. ### Claim 17 (depends on 16) The base station of claim 16, wherein the first subframe includes a first plurality of slots and the second subframe includes a second plurality of slots. ### Claim 18 (depends on 13) The base station of claim 13, wherein the first time unit is a first slot and the second time unit is a second slot.