# US 11,121,803 B2 · NR CSI measurement and CSI reporting > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,121,803 B2 - Document ID: US11121803B2 - Status: Granted - Kind: B2 - Application number: 16/407,407 - Filed: 2019-05-09 - Published: 2019-11-14 - Granted: 2021-09-14 - Earliest claimed: 2018-05-11 - Assignees: Mediatek Inc. - Applicants: Mediatek Inc. - Inventors: Teemu Tapio Virtanen; Weidong Yang; Karl Marko Juhani Lampinen; Lung-Sheng Tsai - Web page: https://patentgrep.com/patent/US11121803B2 ## CPC - H04L 1/0026: {Transmission of channel quality indication} - H04L 5/0057: {Physical resource allocation for CQI} - H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT} - 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 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 5/0094: {Indication of how sub-channels of the path are allocated} - H04L 25/0224: {using sounding signals} - H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports} - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 76/28: Discontinuous transmission [DTX]; Discontinuous reception [DRX] - 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) ## Abstract In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a UE. The UE determines a first uplink slot on an uplink carrier for reporting channel state information. The UE determines, on a downlink carrier, a first downlink slot that is an earliest downlink slot overlaps with the first uplink slot. The UE determines a number M based on a numerology of the downlink carrier, M being an integer greater than or equal to 0. The UE measures a reference signal, received no later than a second downlink slot that is a latest valid downlink slot no later than M downlink slots prior to the first downlink slot, to generate the channel state information. ## Claims ### Claim 1 A method of wireless communication of a user equipment (UE), comprising: determining a first uplink slot on an uplink carrier for reporting channel state information; determining, on a downlink carrier, a first downlink slot that is an earliest downlink slot of one or more downlink slots that overlap with the first uplink slot; determining a number M based on a numerology of the downlink carrier, M being an integer greater than or equal to 0; and measuring a reference signal, received no later than a second downlink slot that is a latest valid downlink slot no later than M downlink slots prior to the first downlink slot, to generate the channel state information. ### Claim 2 (depends on 1) The method of claim 1, wherein the numerology of the downlink carrier defines a subcarrier spacing of the downlink carrier. ### Claim 3 (depends on 1) The method of claim 1, wherein the determining the first downlink slot comprises: determining a first index of the first uplink slot; and determining a second index of the first downlink slot based on the first index, the numerology of the downlink carrier, and a numerology of the uplink carrier, wherein the numerology of the uplink carrier defines a subcarrier spacing of the uplink carrier. ### Claim 4 (depends on 3) The method of claim 3, wherein the second index is determined to be a largest integer that is less than or equal to a product of (a) the first index and (b) a ratio of the subcarrier spacing of the downlink carrier to the subcarrier spacing of the uplink carrier. ### Claim 5 (depends on 3) The method of claim 3, further comprising determining an index of the second downlink slot based on the second index and the number M. ### Claim 6 (depends on 1) The method of claim 1, further comprising determining that the second downlink slot is the latest valid slot no later than M downlink slots prior to the first downlink slot. ### Claim 7 (depends on 6) The method of claim 6, wherein the determining that the second downlink slot is the latest valid slot comprises: determining that the second downlink slot includes at least one higher layer configured downlink symbol period or flexible symbol period. ### Claim 8 (depends on 6) The method of claim 6, wherein the determining that the second downlink slot is the latest valid slot comprises: determining that the second downlink slot includes a downlink symbol period configured by cell-specific semi-static signaling. ### Claim 9 (depends on 6) The method of claim 6, wherein the determining that the second downlink slot is the latest valid slot comprises: determining that the second downlink slot includes a downlink symbol period configured by UE-specific semi-static signaling. ### Claim 10 (depends on 6) The method of claim 6, wherein the determining that the second downlink slot is the latest valid slot comprises: determining that the second downlink slot is outside a configured measurement gap for the UE. ### Claim 11 An apparatus for wireless communication, the apparatus being a user equipment (UE), comprising: a memory; and at least one processor coupled to the memory and configured to: determine a first uplink slot on an uplink carrier for reporting channel state information; determine, on a downlink carrier, a first downlink slot that is an earliest downlink slot of one or more downlink slots that overlap with the first uplink slot; determine a number M based on a numerology of the downlink carrier, M being an integer greater than or equal to 0; and measure a reference signal, received no later than a second downlink slot that is a latest valid downlink slot no later than M downlink slots prior to the first downlink slot, to generate the channel state information. ### Claim 12 (depends on 11) The apparatus of claim 11, wherein the numerology of the downlink carrier defines a subcarrier spacing of the downlink carrier. ### Claim 13 (depends on 11) The apparatus of claim 11, wherein to determine the first downlink slot, the at least one processor is further configured to: determine a first index of the first uplink slot; and determine a second index of the first downlink slot based on the first index, the numerology of the downlink carrier, and a numerology of the uplink carrier, wherein the numerology of the uplink carrier defines a subcarrier spacing of the uplink carrier. ### Claim 14 (depends on 13) The apparatus of claim 13, wherein the second index is determined to be a largest integer that is less than or equal to a product of (a) the first index and (b) a ratio of the subcarrier spacing of the downlink carrier to the subcarrier spacing of the uplink carrier. ### Claim 15 (depends on 13) The apparatus of claim 13, wherein the at least one processor is further configured to determining an index of the second downlink slot based on the second index and the number M.