# US 11,452,120 B2 · Selection of a scheduling user equipment > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,452,120 B2 - Document ID: US11452120B2 - Status: Granted - Kind: B2 - Application number: 16/816,001 - Filed: 2020-03-11 - Published: 2020-09-24 - Granted: 2022-09-20 - Earliest claimed: 2019-03-22 - Assignees: Lenovo (Singapore) Pte. Ltd. - Applicants: Lenovo (Singapore) PTE. LTD. - Inventors: Karthikeyan Ganesan; Prateek Basu Mallick; Joachim Loehr; Ravi Kuchibhotla - Web page: https://patentgrep.com/patent/US11452120B2 ## CPC - H04W 72/54: based on quality criteria - H04W 84/20: Leader-follower arrangements - H04W 4/029: Location-based management or tracking services - H04W 4/06: Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services - H04W 72/12: Wireless traffic scheduling - H04W 72/20: Control channels or signalling for resource management - H04W 88/04: adapted for relaying to or from another terminal or user - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Apparatuses, methods, and systems are disclosed for selection of a scheduling user equipment. One method includes receiving first information from a plurality of user equipments, wherein the first information indicates at least one sidelink user equipment in communication with each user equipment of the plurality of user equipments. The method includes selecting a scheduling user equipment from the plurality of user equipments based on a quality of a first connection interface and a second connection interface of each user equipment of the plurality of user equipments indicated in the first information. ## Claims ### Claim 1 A method comprising: receiving first information from a plurality of user equipments, wherein the first information indicates at least one sidelink user equipment in communication with each user equipment of the plurality of user equipments; selecting a scheduling user equipment from the plurality of user equipments based on a quality of a first connection interface and a second connection interface of each user equipment of the plurality of user equipments indicated in the first information; and transitioning to a fall back mode in response to mode 2d resource allocation being unavailable and occurrence of a radio link failure or a handover. ### Claim 2 (depends on 1) The method of claim 1, wherein the first connection interface comprises an interface between a user equipment and a network device. ### Claim 3 (depends on 1) The method of claim 1, wherein the second connection interface comprises an interface between a first user equipment and a second user equipment. ### Claim 4 (depends on 1) The method of claim 1, wherein the scheduling user equipment is selected from the plurality of user equipments in response to a first quality of the first connection interface being greater than a first threshold and a second quality of the second connection interface being greater than a second threshold. ### Claim 5 (depends on 1) The method of claim 1, wherein the quality of the first connection interface and the second connection interface is determined by measuring a sidelink reference signal received power. ### Claim 6 (depends on 1) The method of claim 1, wherein the first information is determined based on sidelink reference signal received power, sidelink positioning, or a combination thereof. ### Claim 7 (depends on 6) The method of claim 6, wherein the sidelink positioning is determined based on a global positioning location or a relative position. ### Claim 8 (depends on 7) The method of claim 7, wherein the relative position is based on a time of arrival, a time of flight, a spatial measurement, an angular measurement, an angle of arrival, or some combination thereof. ### Claim 9 (depends on 1) The method of claim 1, further comprising transmitting second information indicating the scheduling user equipment. ### Claim 10 (depends on 9) The method of claim 9, wherein the second information is transmitted via unicast or multicast signaling. ### Claim 11 (depends on 9) The method of claim 9, wherein the second information comprises a user equipment identifier corresponding to the scheduling user equipment, an allocation of a common resource, an allocation of a user equipment specific resource, an allowed cast type, a sensing operation indication, sensing information corresponding to the common resource, a validity of the common resource, a scheduling user equipment communication range, a fallback operation mode, a fallback sidelink carrier frequency, a fallback sidelink resource pool, or some combination thereof. ### Claim 12 (depends on 9) The method of claim 9, wherein the second information comprises short term sensing parameters, a time and frequency location of a sidelink control channel in a resource pool, a demodulation reference signal configuration, or some combination thereof. ### Claim 13 (depends on 12) The method of claim 12, wherein the short term sensing parameters comprise a threshold, a sensing window, a time and frequency location of a sidelink control channel in a resource pool, or some combination thereof. ### Claim 14 (depends on 1) The method of claim 1, further comprising receiving updated first information from the plurality of user equipments. ### Claim 15 (depends on 14) The method of claim 14, further comprising reselecting the scheduling user equipment from the plurality of user equipments based on the updated first information. ### Claim 16 (depends on 1) The method of claim 1, wherein the fall back mode comprises a mode 1, a mode 2, a configured resource pool, a preconfigured resource pool, or some combination thereof. ### Claim 17 (depends on 1) The method of claim 1, wherein the scheduling user equipment indicates a group identifier, resource pool resources, a priority value, or some combination thereof to one or more sidelink user equipments. ### Claim 18 An apparatus comprising: a receiver that receives first information from a plurality of user equipments, wherein the first information indicates at least one sidelink user equipment in communication with each user equipment of the plurality of user equipments; and a processor that selects a scheduling user equipment from the plurality of user equipments based on a quality of a first connection interface and a second connection interface of each user equipment of the plurality of user equipments indicated in the first information; and transitions to a fall back mode in response to mode 2d resource allocation being unavailable and occurrence of a radio link failure or a handover. ### Claim 19 (depends on 18) The apparatus of claim 18, wherein the first connection interface comprises an interface between a user equipment and a network device. ### Claim 20 (depends on 18) The apparatus of claim 18, wherein the fall back mode comprises a mode 1, a mode 2, a configured resource pool, a preconfigured resource pool, or some combination thereof.