# US 2018/0324659 A1 · Packet-Switched Wireless Communication for Link Budget Limited Wireless Devices > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0324659 A1 - Document ID: US20180324659A1 - Status: Published application - Kind: A1 - Application number: 16/037,788 - Filed: 2018-07-17 - Published: 2018-11-08 - Earliest claimed: 2015-05-18 - Assignees: Apple Inc. - Applicants: Apple Inc. - Inventors: Tarik Tabet; Farouk Belghoul; Samy Khay-Ibbat; Sarma V. Vangala; Rafael L. Rivera-Barreto; David Boettger; Awais M. Hussain; Syed Aon Mujtaba - Web page: https://patentgrep.com/patent/US20180324659A1 ## CPC - H04W 36/0085: {Hand-off measurements} - H04B 17/336: Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR] - H04B 17/382: for resource allocation, admission control or handover - H04W 36/00837: {Determination of triggering parameters for hand-off} - H04W 36/302: {due to low signal strength} - H04W 36/0058: {Transmission of hand-off measurement information, e.g. measurement reports} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04B: TRANSMISSION ## Abstract This disclosure relates to techniques for a link budget limited UE to improve communications performance with a cellular network. The UE may perform signal to interference noise ratio (SINR) measurements and use these measurements to adjust a received signal power value that is provided to the cellular network as a received signal power measurement. The UE may generate the received signal power value based at least in part on the SINR measurement in order to reduce the likelihood of handover when the UE has good SINR but poor received signal power. The UE may also provide preferred configuration information to the base station which enhances the performance of the UE when link budget limited. The configuration information may specify one or more parameter values designed to provide improved performance for a link budget limited device. ## Claims ### Claim 1 A method for operating a user equipment (UE), comprising: at the UE: communicating with a base station in a first cell in a cellular network; performing a measurement of signal to interference noise ratio (SINR) of communications received by the UE in the first cell; receiving configuration parameters associated with at least report triggering event A4, wherein the event A4 indicates that a measurement of signal between the UE and a particular cell exceeds a threshold value, wherein the UE is configured to determine the event A4 based on the measurement of SINR instead of one or more of: reference signal received power (RSRP) or reference signal received quality (RSRQ); determining the event A4 has been triggered based on the measurement of SINR; and based on determining the event A4 has been triggered, reporting at least the SINR to the first cell. ### Claim 2 (depends on 1) The method of claim 1, wherein the configuration parameters indicate one or more thresholds associated with the event A4. ### Claim 3 (depends on 1) The method of claim 1, further comprising: determining event A2 has been triggered based on a measurement of SINR of the first cell; and based on determining the event A2 has been triggered, reporting at least the SINR of the first cell. ### Claim 4 (depends on 3) The method of claim 3, wherein the UE is configured to determine the event A2 based on the SINR of the first cell instead of one or more of: reference signal received power (RSRP) or reference signal received quality (RSRQ). ### Claim 5 (depends on 3) The method of claim 3, wherein the configuration parameters indicate one or more thresholds associated with the event A2. ### Claim 6 (depends on 1) The method of claim 1, further comprising: determining event A3 has been triggered based on a plurality of SINR measurements; and based on determining the event A3 has been triggered, reporting at least one SINR of the plurality of SINR measurements. ### Claim 7 (depends on 6) The method of claim 6, wherein the UE is configured to determine the event A3 based on the measurement of SINR instead of one or more of: reference signal received power (RSRP) or reference signal received quality (RSRQ). ### Claim 8 (depends on 6) The method of claim 6, wherein the configuration parameters indicate one or more thresholds associated with the event A3. ### Claim 9 An apparatus, comprising: one or more processing elements, wherein the one or more processing elements are configured to cause a user equipment (UE) to: communicate with a base station in a first cell in a cellular network; perform a measurement of signal to interference noise ratio (SINR) of communications received by the UE in the first cell; receive configuration parameters associated with at least report triggering event A4, wherein the event A4 indicates that a measurement of a signal between the UE and a particular cell exceeds a threshold value, wherein the one or more processing elements are configured to determine the event A4 based on the measurement of SINR instead of one or more of: reference signal received power (RSRP) or reference signal received quality (RSRQ); determine the event A4 has been triggered based on the measurement of SINR; and based on determining the event A4 has been triggered, report at least the SINR to the first cell. ### Claim 10 (depends on 9) The apparatus of claim 9, wherein the configuration parameters indicate one or more thresholds associated with the event A4. ### Claim 11 (depends on 9) The apparatus of claim 9, wherein the one or more processing elements are further configured to: determine event A2 has been triggered based on a measurement of SINR of the first cell; and based on determining the event A2 has been triggered, report at least the SINR of the first cell. ### Claim 12 (depends on 11) The apparatus of claim 11, wherein the one or more processing elements are configured to determine the event A2 based on the SINR of the first cell instead of one or more of: reference signal received power (RSRP) or reference signal received quality (RSRQ). ### Claim 13 (depends on 11) The apparatus of claim 11, wherein the configuration parameters indicate one or more thresholds associated with the event A2. ### Claim 14 (depends on 9) The apparatus of claim 9, wherein the one or more processing elements are further configured to: determine event A3 has been triggered based on a plurality of SINR measurements; and based on determining the event A3 has been triggered, report at least one SINR of the plurality of SINR measurements. ### Claim 15 (depends on 14) The apparatus of claim 14, wherein the one or more processing elements are configured to determine the event A3 based on the measurement of SINR instead of one or more of: reference signal received power (RSRP) or reference signal received quality (RSRQ). ### Claim 16 (depends on 14) The apparatus of claim 14, wherein the configuration parameters indicate one or more thresholds associated with the event A3. ### Claim 17 A user equipment (UE), comprising: at least one antenna; a radio coupled to the at least one antenna for performing wireless cellular communications; and at least one processing element coupled to the radio, wherein the at least one processing element is configured to: communicate with a base station in a first cell in a cellular network; perform a measurement of signal to interference noise ratio (SINR) of communications received by the UE in the first cell; receive configuration parameters associated with at least report triggering event A4, wherein the event A4 indicates that a measurement of a signal between the UE and a particular cell exceeds a threshold value, wherein the one or more processing elements are configured to determine the event A4 based on the measurement of SINR instead of one or more of: reference signal received power (RSRP) or reference signal received quality (RSRQ); determine the event A4 has been triggered based on the measurement of SINR; and based on determining the event A4 has been triggered, report at least the SINR to the first cell. ### Claim 18 (depends on 17) The UE of claim 17, wherein the configuration parameters indicate one or more thresholds associated with the event A4. ### Claim 19 (depends on 17) The UE of claim 17, wherein the at least one processing elements is further configured to: determine event A2 has been triggered based on a measurement of SINR of the first cell; and based on determining the event A2 has been triggered, report at least the SINR of the first cell. ### Claim 20 (depends on 17) The UE of claim 17, wherein the at least one processing elements is further configured to: determine event A3 has been triggered based on a plurality of SINR measurements; and based on determining the event A3 has been triggered, report at least one SINR of the plurality of SINR measurements.