# US 11,909,502 B2 · Timing configuration management for network entities > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,909,502 B2 - Document ID: US11909502B2 - Status: Granted - Kind: B2 - Application number: 17/308,938 - Filed: 2021-05-05 - Published: 2022-11-10 - Granted: 2024-02-20 - Earliest claimed: 2021-05-05 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Bharat Shrestha; Xiao Feng Wang; Liangping Ma; Alberto Rico Alvarino; Changhwan Park; Ayan Sengupta; Huilin Xu; Jun Ma; Umesh Phuyal; Peter Gaal - Web page: https://patentgrep.com/patent/US11909502B2 ## CPC - H04B 7/1851: {Systems using a satellite or space-based relay (H04B7/18508, H04B7/18521 take precedence; providing specific services H04B7/18523 - H04B7/18576)} - H04B 7/18513: {Transmission in a satellite or space-based system} - H04W 36/06: Reselecting a communication resource in the serving access point - H04W 56/001: {Synchronization between nodes} - H04W 56/0015: {one node acting as a reference for the others} - H04B: TRANSMISSION - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Methods, systems, and devices for wireless communications are described. A serving base station or a serving satellite may transmit a timing configuration to the UE based on a reference unit, such as a location at a beam center for a respective satellite, a threshold distance relative to the beam center for the respective satellite, a reference time, or any combination thereof. In some cases, the UE may monitor for one or more SSBs from the neighboring satellites according to the timing configuration and a respective propagation delay between the UE and each of the neighboring satellites. The UE may measure the SSBs according to the measurement gap and measurement window in the timing configuration. In some examples, the UE may perform a cell handover procedure or a cell reselection procedure based on measuring the SSBs. ## Claims ### Claim 1 A method for wireless communications at a user equipment (UE), comprising: receiving a message indicating a timing configuration for the UE based at least in part on a reference unit, the timing configuration corresponding to a measurement window and a measurement gap for measuring one or more synchronization signal blocks from a set of satellites each associated with one or more satellites, the message comprising one or more parameters corresponding to respective propagation delays from different satellites with respect to the reference unit, wherein the one or more parameters comprise one or more of a first periodicity, an offset, a drift rate, a measurement window adjustment rate, or a combination thereof corresponding to a drift of one or more of the set of satellites, a speed of one or more of the set of satellites, or a gateway location of the UE; monitoring for the one or more synchronization signal blocks based at least in part on the timing configuration and a respective propagation delay between the UE and a respective satellite of the set of satellites associated with the one or more synchronization signal blocks; and measuring at least one of the one or more synchronization signal blocks in accordance with the measurement gap and the measurement window based at least in part on the monitoring and the respective propagation delay. ### Claim 2 (depends on 1) The method of claim 1, further comprising: determining the reference unit comprises a reference location at a beam center associated with the respective satellite, a threshold distance relative to the beam center associated with the respective satellite, a reference time, or any combination thereof. ### Claim 3 (depends on 1) The method of claim 1, further comprising: receiving a beam switch message indicating the timing configuration; and adjusting the measurement window, the measurement gap, or both based at least in part on the received message indicating the timing configuration and the received beam switch message. ### Claim 4 (depends on 1) The method of claim 1, further comprising: receiving an indication of a timer associated with a second periodicity for adjustment of the measurement window, the measurement gap, or both; and adjusting the measurement window, the measurement gap, or both based at least in part on expiration of the timer, wherein monitoring for the one or more synchronization signal blocks is based at least in part on the adjusted measurement window, the adjusted measurement gap, or both. ### Claim 5 (depends on 4) The method of claim 4, further comprising: receiving an indication of a second timing configuration based at least in part on the expiration of the timer, the second timing configuration indicating the adjusted measurement window, the adjusted measurement gap, or both. ### Claim 6 (depends on 1) The method of claim 1, wherein monitoring for the one or more synchronization signal blocks comprises: monitoring for the one or more synchronization signal blocks in a time slot indicated by the timing configuration and at least one other time slot adjacent to the indicated time slot. ### Claim 7 (depends on 1) The method of claim 1, wherein receiving the message indicating the timing configuration comprises: receiving a plurality of measurement window configurations corresponding to a single measurement gap, wherein the plurality of measurement window configurations comprises a list of measurement window configurations corresponding to a plurality of satellites including the set of satellites. ### Claim 8 (depends on 7) The method of claim 7, wherein the one or more satellites of the set of satellites share a synchronization signal block frequency, a subcarrier spacing, a measurement object, or any combination thereof for communications with the UE. ### Claim 9 (depends on 7) The method of claim 7, wherein the list of measurement window configurations comprises a synchronization signal block frequency, a subcarrier spacing, a delta signaling of a reference measurement window configuration, or a combination thereof corresponding to the set of satellites. ### Claim 10 (depends on 7) The method of claim 7, wherein the plurality of measurement window configurations of the list of measurement window configurations corresponds to a single base station serving the set of satellites. ### Claim 11 (depends on 1) The method of claim 1, wherein receiving the message indicating the timing configuration comprises: receiving an indication of a plurality of measurement gap configurations corresponding to the one or more synchronization signal blocks. ### Claim 12 (depends on 11) The method of claim 11, wherein the indication of the plurality of measurement gap configurations comprises a list of measurement gap configurations, each measurement gap configuration in the list of measurement gap configurations corresponding to a synchronization signal block frequency, a measurement object identifier, or both. ### Claim 13 (depends on 11) The method of claim 11, wherein the indication of the plurality of measurement gap configurations comprises a list of measurement gap parameters comprising a gap offset, a gap time advance, a gap repetition periodicity, a gap duration, or a combination thereof corresponding to a synchronization signal block frequency, a measurement object identifier, or both. ### Claim 14 (depends on 11) The method of claim 11, wherein the indication of the plurality of measurement gap configurations indicates a value of a measurement gap repetition period, a measurement gap timing advance, or both. ### Claim 15 (depends on 1) The method of claim 1, wherein receiving the message indicating the timing configuration comprises: receiving an indication of a rate of change of the measurement gap based at least in part on the respective propagation delay; and adjusting the measurement gap according to the rate of change of the measurement gap. ### Claim 16 (depends on 15) The method of claim 15, further comprising: receiving a beam switch message comprising the indication of the rate of change of the measurement gap. ### Claim 17 (depends on 15) The method of claim 15, further comprising: receiving a validity flag for the measurement gap from a network device, the validity flag indicating that the measurement gap is invalid after a validity period; and receiving an indication of a second timing configuration based at least in part on the validity flag indicating that the measurement gap is invalid. ### Claim 18 (depends on 1) The method of claim 1, wherein receiving the message indicating the timing configuration comprises: receiving a system information block that indicates the timing configuration or one or more measurement window adjustment parameters. ### Claim 19 (depends on 1) The method of claim 1, wherein the UE, the set of satellites, or a combination thereof are nodes in a non-terrestrial network (NTN). ### Claim 20 A method for wireless communication at a network device, comprising: transmitting an indication of a timing configuration for a user equipment (UE) based at least in part on a reference unit, the timing configuration corresponding to a measurement window and a measurement gap for measuring one or more synchronization signal blocks from a set of satellites, each satellite of the set of satellites associated with the network device; and transmitting the one or more synchronization signal blocks based at least in part on the measurement gap, the measurement window, and a respective propagation delay between the UE and a satellite of the set of satellites. ### Claim 21 (depends on 20) The method of claim 20, further comprising: determining the reference unit comprises a reference location at a beam center associated with the satellite, around the beam center associated with the satellite, a reference time, or any combination thereof. ### Claim 22 (depends on 20) The method of claim 20, wherein transmitting the indication of the timing configuration comprises: transmitting, to the UE, a message comprising one or more parameters corresponding to respective propagation delays from different satellites with respect to the reference unit. ### Claim 23 (depends on 20) The method of claim 20, further comprising: transmitting a beam switch message indicating the timing configuration. ### Claim 24 (depends on 20) The method of claim 20, further comprising: transmitting an indication of a timer associated with a periodicity for adjustment of the measurement window, the measurement gap, or both. ### Claim 25 (depends on 20) The method of claim 20, wherein transmitting the indication of the timing configuration comprises: calculating a rate of change of the measurement gap for each of the one or more synchronization signal blocks; and transmitting an indication of the calculated rate of change of the measurement gap based at least in part on the respective propagation delay. ### Claim 26 An apparatus for wireless communications at a user equipment (UE), comprising: a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to: receive a message comprising a timing configuration for the UE based at least in part on a reference unit, the timing configuration corresponding to a measurement window and a measurement gap for measuring one or more synchronization signal blocks from a set of satellites each associated with one or more satellites, the message comprising one or more parameters corresponding to respective propagation delays from different satellites with respect to the reference unit, wherein the one or more parameters comprise one or more of a periodicity, an offset, a drift rate, a measurement window adjustment rate, or a combination thereof corresponding to a drift of one or more of the set of satellites, a speed of one or more of the set of satellites, or a gateway location of the UE; monitor for the one or more synchronization signal blocks based at least in part on the timing configuration and a respective propagation delay between the UE and a respective satellite of the set of satellites associated with the one or more synchronization signal blocks; and measure at least one of the one or more synchronization signal blocks in accordance with the measurement gap and the measurement window based at least in part on the monitoring and the respective propagation delay. ### Claim 27 An apparatus for wireless communication at a network device, comprising: a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to: transmit an indication of a timing configuration for a user equipment (UE) based at least in part on a reference unit, the timing configuration corresponding to a measurement window and a measurement gap for measuring one or more synchronization signal blocks from a set of satellites, each satellite of the set of satellites associated with the network device; and transmit the one or more synchronization signal blocks based at least in part on the measurement gap, the measurement window, and a respective propagation delay between the UE and a satellite of the set of satellites. ### Claim 28 An apparatus for wireless communications at a user equipment (UE), comprising: a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to: receive a message comprising a timing configuration for the UE based at least in part on a reference time, the timing configuration corresponding to a measurement window and a measurement gap for measuring one or more synchronization signal blocks from a set of satellites each associated with one or more satellites, the message comprising one or more parameters corresponding to respective propagation delays from different satellites with respect to the reference time, wherein the one or more parameters comprise one or more of a periodicity, an offset, a drift rate, a measurement window adjustment rate, or a combination thereof corresponding to a drift of one or more of the set of satellites, a speed of one or more of the set of satellites, or a gateway location of the UE; monitor for the one or more synchronization signal blocks based at least in part on the timing configuration and a respective propagation delay between the UE and a respective satellite of the set of satellites associated with the one or more synchronization signal blocks; and measure at least one of the one or more synchronization signal blocks in accordance with the measurement gap and the measurement window based at least in part on the monitoring and the respective propagation delay. ### Claim 29 An apparatus for wireless communication at a network device, comprising: a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to: transmit an indication of a timing configuration for a user equipment (UE) based at least in part on a reference time, the timing configuration corresponding to a measurement window and a measurement gap for measuring one or more synchronization signal blocks from a set of satellites, each satellite of the set of satellites associated with the network device; and transmit the one or more synchronization signal blocks based at least in part on the measurement gap, the measurement window, and a respective propagation delay between the UE and a satellite of the set of satellites.