# US 10,772,151 B2 · Beam management in discontinuous reception > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,772,151 B2 - Document ID: US10772151B2 - Status: Granted - Kind: B2 - Application number: 16/241,178 - Filed: 2019-01-07 - Published: 2019-07-11 - Granted: 2020-09-08 - Earliest claimed: 2018-01-05 - Assignees: Ofinno, LLC - Applicants: Hua Zhou; Esmael Dinan; Alireza Babaei; Hyoungsuk Jeon; Kyungmin Park - Inventors: Hua Zhou; Esmael Dinan; Alireza Babaei; Hyoungsuk Jeon; Kyungmin Park - Web page: https://patentgrep.com/patent/US10772151B2 ## CPC - H04B 7/0626: {Channel coefficients, e.g. channel state information [CSI]} - H04B 7/0426: Power distribution - H04B 7/0456: Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting - H04B 7/063: {Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection} - H04B 7/0632: {Channel quality parameters, e.g. channel quality indicator [CQI]} - H04B 7/088: {using beam selection} - H04B 17/328: {Reference signal received power [RSRP]; Reference signal received quality [RSRQ]} - H04L 1/0026: {Transmission of channel quality indication} - H04L 1/0027: {Scheduling of signalling, e.g. occurrence thereof} - H04L 1/1812: Hybrid protocols; Hybrid automatic repeat request [HARQ] - H04L 1/1848: {Time-out mechanisms} - H04L 1/188: {Time-out mechanisms} - H04L 1/1896: {ARQ related signaling} - H04W 76/28: Discontinuous transmission [DTX]; Discontinuous reception [DRX] - Y02D 30/70: in wireless communication networks - H04B: TRANSMISSION - 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 A wireless device receives a timer value of a DRX on duration timer for a DRX operation; radio resources of a reference signals for a transmission of a layer 1 reference signal received power report; and a report indicator indicating the transmission of the layer 1 reference signal received power report is limited to a time period when the DRX on duration timer is running. The layer 1 reference signal received power report is transmitted at a first time based on the DRX on duration timer running at a predefined time period before the first time. The layer 1 reference signal received power report includes a layer 1 reference signal received power value and a reference signal resource index associated with one of the reference signal(s). Based on the report indicator, transmitting of the layer 1 reference signal received power report at a second time is skipped in response to the DRX on duration timer not running at the predefined time period before the second time. ## Claims ### Claim 1 A method comprising: receiving, by a wireless device from a base station, one or more messages comprising: a timer value of a discontinuous reception (DRX) on duration timer for a DRX operation; radio resources of a plurality of reference signals for a transmission of a layer 1 reference signal received power (L1-RSRP) report; and a report mask indicating the transmission of the L1-RSRP report is limited to a time period when the DRX on duration timer is running; transmitting, at a first time, the L1-RSRP report based on the DRX on duration timer running at a predefined time period before the first time, wherein the L1-RSRP report comprises: a L1-RSRP value; and a reference signal resource index associated with one of the plurality of reference signals; and skipping based on the report mask, a configured transmission, at a second time, of the L1-RSRP in response to the DRX on duration timer not running at the predefined time period before the second time. ### Claim 2 (depends on 1) The method of claim 1, wherein the one or more messages further indicate first uplink control resources for the L1-RSRP report. ### Claim 3 (depends on 1) The method of claim 1, wherein the plurality of reference signals comprise at least one of: a first plurality of channel state information reference signals; and a second plurality of synchronization signal blocks. ### Claim 4 (depends on 1) The method of claim 1, wherein the report mask further indicates a transmission is limited to the time period when the DRX on duration timer is running, wherein the transmission comprises at least one of: a channel quality indicator (CQI); a precoding matrix indicator (PMI); a channel state information reference signal resource indicator (CRI); and a rank indicator (RI) report. ### Claim 5 (depends on 1) The method of claim 1, wherein the reference signal resource index is selected with a largest L1-RSRP value of a reference signal among L1-RSRP values of the plurality of reference signals. ### Claim 6 (depends on 1) The method of claim 1, wherein the L1-RSRP report further comprises at least a second L1-RSRP value and at least a second reference signal resource index. ### Claim 7 (depends on 1) The method of claim 1, wherein a medium access control entity of the wireless device is in active time at the predefined time period before the second time. ### Claim 8 (depends on 7) The method of claim 7, wherein the active time comprises at least one of: a time while one or more DRX timers are running; a time while a scheduling request is sent on uplink control channel and is pending; a time while an uplink grant for a pending hybrid automatic repeat request (HARQ) retransmission can occur and there is data in corresponding HARQ buffer; and a time while a downlink control channel indicating a new transmission addressed to an identifier of the wireless device has not been received after successful reception of a random access response for a preamble not selected by the medium access control entity of the wireless device. ### Claim 9 (depends on 1) The method of claim 1, wherein the one or more messages further indicate a short DRX cycle for the DRX operation. ### Claim 10 (depends on 9) The method of claim 9, wherein the wireless device starts the DRX on duration timer based on the timer value in response to the short DRX cycle being used. ### Claim 11 (depends on 10) The method of claim 10, wherein the wireless device uses the short DRX cycle in response to at least one of: expiry of one or more DRX timers; or receiving one or more DRX command medium access control control elements. ### Claim 12 (depends on 11) The method of claim 11, wherein the one or more DRX timers comprise at least one of: the DRX on duration timer; a DRX inactivity timer; a DRX retransmission timer; and a medium access control contention resolution timer. ### Claim 13 (depends on 1) The method of claim 1, wherein the one or more messages further indicate a long DRX cycle for the DRX operation. ### Claim 14 (depends on 13) The method of claim 13, wherein the wireless device starts the DRX on duration timer based on the timer value in response to the long DRX cycle being used. ### Claim 15 (depends on 14) The method of claim 14, wherein the wireless device uses the long DRX cycle in response to at least one of: expiry of one or more DRX timers; or receiving one or more DRX command medium access control control elements. ### Claim 16 (depends on 15) The method of claim 15, wherein the one or more DRX timers comprise at least one of: the DRX on duration timer; a DRX inactivity timer; a DRX retransmission timer; and a medium access control contention resolution timer. ### Claim 17 (depends on 1) The method of claim 1, wherein the wireless device transmits the L1-RSRP report via a first uplink control resource. ### Claim 18 (depends on 17) The method of claim 17, further comprising: transmitting at the first time, at least one of: a CQI; a PMI; a CRI; and a RI report; and not transmitting at the second time, based on the report indicator, at least one of: the CQI; the PMI; the CRI; and the RI report. ### Claim 19 (depends on 18) The method of claim 18, wherein the transmitting at the first time has a different transmission periodicity than the transmission of the L1-RSRP report. ### Claim 20 (depends on 17) The method of claim 17, wherein the one or more messages further indicate radio resources of a second uplink control channel for at least one of: a CQI; a PMI; a CRI; and a RI report.