# US 12,120,718 B2 · Spectral region identification for reference symbol > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,120,718 B2 - Document ID: US12120718B2 - Status: Granted - Kind: B2 - Application number: 17/290,853 - Filed: 2018-11-06 - Published: 2021-12-09 - Granted: 2024-10-15 - Earliest claimed: 2018-11-06 - Assignees: Telefonaktiebolaget LM Ericsson (publ) - Applicants: Telefonaktiebolaget LM Ericsson (publ) - Inventors: Deep Shrestha; Åke Busin; Sara Modarres Razavi; Iana Siomina; Ritesh Shreevastav - Web page: https://patentgrep.com/patent/US12120718B2 ## CPC - H04W 72/542: using measured or perceived quality - H04W 64/00: Locating users or terminals {or network equipment} for network management purposes, e.g. mobility management - H04L 5/0092: {Indication of how the channel is divided} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract The invention relates to a method for operating a user equipment (QQ1 10) in a wireless network, the method comprising measuring radio characteristics of a first set of physical resources, the first set of physical resources being available for receiving downlink reference signals for positioning (RSa-RSc) and the first set of physical resources being indicated by a first message (S21 1) received from a network node (QQ160), selecting a second set of physical resources from the first set of physical resources based on the measured radio characteristics, sending a second message (S122), indicative of the selected second set of physical resources to the network node (QQ160). ## Claims ### Claim 1 A method for operating a user equipment in a wireless network, the method comprising: measuring radio characteristics of a first set of physical resources, the first set of physical resources being available for receiving downlink reference signals for positioning and the first set of physical resources being indicated by a message received from a network node of the wireless network; selecting a second set of physical resources from the first set of physical resources based on the measured radio characteristics; sending, to the network node, an indication of the selected second set of physical resources; in response to the indication of the selected second set, receiving from the network node an indication of physical resources for receiving the downlink reference signals for positioning; and performing positioning measurements using the indicated physical resources for receiving the downlink reference signals for positioning. ### Claim 2 (depends on 1) The method according to claim 1, further comprising one of the following: determining a position of the user equipment using results of the positioning measurements; or sending, to the network node, the results of the positioning measurements. ### Claim 3 (depends on 1) The method according to claim 1, wherein selecting the second set of physical resources from the first set of physical resources comprises ranking the measured radio characteristics using predetermined conditions defining preferred radio characteristics, wherein the selected second set of resources correspond to the highest ranked measured radio characteristics. ### Claim 4 (depends on 1) The method according to claim 1, wherein the indicated physical resources for receiving the downlink reference signals include two or more mutually disjunctive sets of physical resources for receiving the downlink reference signals for positioning from respective two or more network nodes. ### Claim 5 (depends on 1) The method according to claim 1, wherein the indicated physical resources for receiving the downlink reference signals include two or more mutually overlapping sets of physical resources for receiving the downlink reference signals for positioning from respective two or more network nodes. ### Claim 6 A method for operating a network node in a wireless network, the method comprising: receiving, from a user equipment or from a second network node, a request for physical resources selectable for positioning; obtaining a first set of physical resources selectable for positioning measurements; transmitting, to the user equipment, a message including an indication of the first set of physical resources; receiving, from the user equipment, an indication of a second set of physical resources selected from the first set of physical resources; based on the selected second set of physical resources, obtaining physical resources for receiving downlink reference signals for positioning; and transmitting, to the user equipment, an indication of the physical resources for receiving the downlink reference signals for positioning. ### Claim 7 (depends on 6) The method according to claim 6, wherein obtaining the first set of physical resources comprises: transmitting, to a location server, a message indicative of the received request; and receiving, from the location server, the indication of the first set of physical resources. ### Claim 8 (depends on 6) The method according to claim 6, wherein obtaining the physical resources for receiving downlink reference signals comprises: transmitting, to a location server, the indication of the second set of physical resources; and receiving, from the location server, the indication of the physical resources for receiving the downlink reference signals for positioning. ### Claim 9 (depends on 6) The method according to claim 6, further comprising: receiving, from the user equipment, results of the positioning measurements; and one of the following: determining the position of the user equipment based on the results; or sending the results to a location server for a determination of the position of the user equipment. ### Claim 10 A user equipment configured for operation in a wireless network, the user equipment comprising: a processor; and a memory storing instructions executable by said processor, wherein execution of the instructions configures the user equipment to: measure radio characteristics of a first set of physical resources, the first set of physical resources being available for receiving downlink reference signals for positioning and the first set of physical resources being indicated by a message received from a network node of the wireless network; select a second set of physical resources from the first set of physical resources based on the measured radio characteristics; send, to the network node, an indication of the selected second set of physical resources; in response to the indication of the selected second set, receive from the network node—an indication of physical resources for receiving the downlink reference signals for positioning; and perform positioning measurements using the indicated physical resources for receiving the downlink reference signals for positioning. ### Claim 11 (depends on 10) The user equipment according to claim 10, wherein execution of the instructions further configures the user equipment to perform one of the following: determine a position of the user equipment using results of the positioning measurements; or send, to the network node, the results of the positioning measurements. ### Claim 12 (depends on 10) The user equipment according to claim 10, wherein execution of the instructions configures the user equipment to select the second set of physical resources from the first set of physical resources based on ranking the measured radio characteristics using predetermined conditions defining preferred radio characteristics, wherein the selected second set of resources correspond to the highest ranked measured radio characteristics. ### Claim 13 (depends on 10) The user equipment according to claim 10, wherein the indicated physical resources for receiving the downlink reference signals include two or more mutually disjunctive sets of physical resources for receiving the downlink reference signals for positioning from respective two or more network nodes. ### Claim 14 (depends on 10) The user equipment according to claim 10, wherein the indicated physical resources for receiving the downlink reference signals include two or more mutually overlapping sets of physical resources for receiving the downlink reference signals for positioning from respective two or more network nodes. ### Claim 15 (depends on 6) A network node configured for operation in a wireless network, the network node comprising: a processor; and a memory storing instructions executable by said processor, wherein execution of the instructions configures the network node to perform operations corresponding to the method of claim 6. ### Claim 16 (depends on 15) The network node according to claim 15, wherein execution of the instructions further configures the network node to obtain the first set of physical resources based on: transmitting, to a location server, a message indicative of the received request; and receiving, from the location server, the indication of the first set of physical resources. ### Claim 17 (depends on 15) The method according to claim 15, wherein execution of the instructions further configures the network node to obtain the physical resources for receiving downlink reference signals based on: transmitting, to a location server, the indication of the second set of physical resources; and receiving, from the location server, the indication of the physical resources for receiving the downlink reference signals for positioning. ### Claim 18 (depends on 15) The network node according to claim 15, wherein execution of the instructions further configures the network node to: receive, from the user equipment, results of the positioning measurements; and one of the following: determine the position of the user equipment based on the results; or send the results to a location server for a determination of the position of the user equipment.