# US 2025/0168751 A1 · Methods and devices for handling inter-frequency measurements on neighboring ntn cells > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0168751 A1 - Document ID: US20250168751A1 - Status: Published application - Kind: A1 - Application number: 18/841,196 - Filed: 2023-09-27 - Published: 2025-05-22 - Earliest claimed: 2022-09-29 - Assignees: Google Inc. - Applicants: Google LLC - Inventors: Ming-Hung TAO; Chih-Hsiang WU - Web page: https://patentgrep.com/patent/US20250168751A1 ## CPC - H04W 48/12: using downlink control channel - H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports} - H04W 36/08: Reselecting an access point - H04W 48/16: Discovering, processing access restriction or access information - H04W 36/0085: {Hand-off measurements} - H04W 84/06: Airborne or Satellite Networks (space-based or airborne stations H04B7/185) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A user equipment is configured to conduct an intra-frequency measurement on a candidate frequency of a non-terrestrial network (NTN) cell even when the UE does not receive information about measurement timing within a candidate frequency configuration or pertinent satellite ephemeris information via a neighbor NTN cell configuration. The UE operates based on the assumption that a base station preparing lists of frequency configurations and neighbor NTN cell configurations has reduced redundant information (e.g., when the same satellite provides plural non-terrestrial cells). The base station is configured to prepare and broadcast such reduced lists of frequency configurations and neighboring NTN cell configurations providing information for the intra-frequency measurements. ## Claims ### Claim at position 1 1-15. (canceled) ### Claim 16 A wireless communication method performed by a user equipment, UE camped on a serving cell, for inter-frequency measurement, the method comprising: receiving a first system information, SI, block including a list of inter-frequency configurations; receiving a second SI block including a list of neighboring non-terrestrial network, NTN cell configurations; and measuring a first signal on a first inter-frequency candidate specified in the list of inter-frequency configurations when the list of neighboring NTN cell configurations includes a neighbor NTN cell configuration associated with the first inter-frequency candidate. ### Claim 17 (depends on 16) The wireless communication method of claim 16, wherein each of the inter-frequency configurations includes a frequency, a priority, and measurement timing information of a cell, and/or each of the neighboring NTN cell configurations of a neighbor NTN cell includes a neighbor NTN cell frequency, a neighboring NTN cell identifier, and satellite ephemeris information of a satellite used for the neighbor NTN cell. ### Claim 18 (depends on 16) The wireless communication method of claim 16, wherein the first SI block is an SIB4 as defined in 3GPP technical specifications. ### Claim 19 (depends on 16) The wireless communication method of claim 16, wherein the second SI block is an SIB19 as defined in 3GPP technical specifications. ### Claim 20 (depends on 16) The wireless communication method of claim 16, further comprising: selecting the first inter-frequency candidate based on respective priorities associated with frequencies specified in the first SI block. ### Claim 21 (depends on 16) The wireless communication method of claim 16, wherein the measuring of the first inter-frequency candidate associated with a priority lower than a serving cell frequency priority is triggered by detecting a signal quality on the serving cell below a predetermined threshold. ### Claim 22 (depends on 16) The wireless communication method of claim 16, further comprising: adjusting timing of the measuring the first signal using the neighbor NTN cell configuration associated with the inter-frequency candidate. ### Claim 23 (depends on 16) The wireless communication method of claim 16, further comprising: measuring a second signal on a second inter-frequency candidate other than a frequency used by a serving cell on which the UE is camped, when the second inter-frequency candidate is specified only in the first SI block or only in the second SI block. ### Claim 24 (depends on 23) The wireless communication method of claim 23, wherein the second SI block specifies a measurement area associated with the second inter-frequency candidate, and the measuring of the second signal is performed when the UE is located within the measurement area. ### Claim 25 (depends on 24) The wireless communication method of claim 24, wherein the measurement area is specified by a reference location and a radius. ### Claim 26 (depends on 23) The wireless communication method of claim 23, wherein the measuring of the second signal occurs if a priority of the second inter-frequency candidate is higher than a priority of the frequency used by the serving cell. ### Claim 27 A user equipment, UE, in a wireless communication system, the UE comprising: a transceiver configured to receive a first system information, SI, block, a second SI block, and a downlink signal on an inter-frequency candidate; and a processor configured to retrieve a list of inter-frequency configurations from the first SI block, and a list of neighboring non-terrestrial network, NTN cell configurations from the second SI block, and to measure the downlink signal received on the inter-frequency candidate when the list of inter-frequency configurations includes the inter-frequency candidate, and the list of neighboring NTN cell configurations includes a neighbor NTN cell configuration associated with the inter-frequency candidate. ### Claim 28 (depends on 27) The UE of claim 27, further comprising: a computer readable recording medium storing executable codes that configure the processor to retrieve the list of inter-frequency configurations from the first SI block, and the list of neighboring NTN cell configurations from the second SI block, and to measure the downlink signal received on the inter-frequency candidate when the list of inter-frequency configurations includes the inter-frequency candidate, and the list of neighboring NTN cell configurations includes a neighbor NTN cell configuration associated with the inter-frequency candidate. ### Claim 29 A wireless communication method performed by network entity, NE, the method comprising: determining a list of inter-frequency configurations and a list of neighboring non-terrestrial network, NTN, cell configurations; modifying the list of inter-frequency configurations and/or the list of neighboring NTN cell configurations by: excluding a frequency configuration from the list of inter-frequency configurations when the frequency configuration indicates a same priority and a same measurement timing as another frequency configuration from the list of inter-frequency configurations, and/or excluding a neighboring NTN cell configuration corresponding to an NTN cell from the list of neighboring NTN cell configurations when the NTN cell is provided via a same satellite as another NTN cell, with a same reselection priority; and broadcasting the list of inter-frequency configurations and/or the list of neighboring cell NTN configurations as modified. ### Claim 30 (depends on 29) The wireless communication method of claim 29, wherein the broadcasting includes broadcasting a system information block SIB4 as defined in 3GPP technical specifications, the system information block SIB4 including the list of inter-frequency configurations. ### Claim 31 (depends on 29) The wireless communication method of claim 29, wherein the broadcasting includes broadcasting a system information block SIB19 as defined in 3GPP technical specifications, the system information block SIB19 including the list of neighboring cell NTN configurations. ### Claim 32 (depends on 29) The wireless communication method of claim 29, further comprising: specifying, in the list of neighboring NTN cell configurations, a measurement area associated with an NTN cell. ### Claim 33 (depends on 32) The wireless communication method of claim 32, wherein the specifying of the measurement area includes specifying a reference location and a radius. ### Claim 34 A network entity, NE, in a wireless communication system, the NE comprising: a transceiver configured to broadcast wireless communications; and a processor configured to determine a list of inter-frequency configurations and a list of neighboring non-terrestrial network, NTN, cell configurations; to modify the list of frequency configurations and/or the list of neighboring NTN cell configurations by: excluding a frequency configuration from the list of frequency configurations when the frequency configuration indicates a same priority and a same measurement timing as another frequency configuration from the list of frequency configurations, and/or excluding a neighboring NTN cell configuration corresponding to an NTN cell from the list of neighboring NTN cell configurations when the NTN cell is provided via a same satellite as another NTN cell, with a same reselection priority; and to trigger the transceiver to broadcast the list of frequency configurations and/or the list of neighboring neighboring NTN cell configurations as modified. ### Claim 35 (depends on 34) The NE of claim 34, further comprising: a computer readable recording medium storing executable codes that configure the processor to determine and to modify the list of frequency configurations and/or the list of neighboring NTN cell configurations.