# US 10,455,443 B2 · Method for transmitting a priority list reporting in a D2D communication system and device therefor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,455,443 B2 - Document ID: US10455443B2 - Status: Granted - Kind: B2 - Application number: 15/757,967 - Filed: 2016-10-11 - Published: 2018-09-06 - Granted: 2019-10-22 - Earliest claimed: 2015-10-18 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Sunyoung Lee; Seungjune Yi - Web page: https://patentgrep.com/patent/US10455443B2 ## CPC - H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports} - H04W 72/20: Control channels or signalling for resource management - H04W 76/00: Connection management - H04W 76/23: Manipulation of direct-mode connections - H04W 92/18: between terminal devices - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for transmitting a priority list reporting in a D2D communication system, the method comprising: configuring a plurality of sidelink logical channels with a respective priority; checking whether one or more priorities of sidelink logical channels configured to the UE change or not when a new sidelink logical channel is configured, or when a configured sidelink logical channel is released; triggering a priority list reporting including information of priority of sidelink logical channels configured for the UE currently if the UE considers that the one or more priorities of sidelink logical channels configured to the UE change; and transmitting the priority list reporting to an eNode-B. ## Claims ### Claim 1 A method for a user equipment (UE) operating in a wireless communication system, the method comprising: configuring a plurality of sidelink logical channels with a respective priority; checking whether one or more priorities of sidelink logical channels configured to the UE change or not when a new sidelink logical channel is configured, or when one of the configured sidelink logical channels is released; triggering a priority list reporting including information of priority of sidelink logical channels configured for the UE currently if the UE considers that the one or more priorities of sidelink logical channels configured to the UE change; and transmitting the priority list reporting to an eNode-B. ### Claim 2 (depends on 1) The method according to claim 1, wherein the UE considers that the one or more priorities of sidelink logical channels configured to the UE change: if a new sidelink logical channel with a first priority is configured to the UE and there wasn't any other sidelink logical channel with the first priority already configured to the UE, or if a configured sidelink logical channel with a second priority is released and there is no more sidelink logical channel with the second priority configured to the UE. ### Claim 3 (depends on 1) The method according to claim 1, wherein the priority is a ProSe Per-Packet Priority. ### Claim 4 (depends on 1) The method according to claim 1, wherein the UE considers that the one or more priorities of sidelink logical channels configured to the UE don't change: if a new sidelink logical channel with a first priority is configured to the UE and there was other sidelink logical channel with the first priority already configured to the UE, or if a configured sidelink logical channel with a second priority is released and there is a sidelink logical channel with the second priority configured to the UE. ### Claim 5 (depends on 4) The method according to claim 4, wherein if the UE considers that the one or more priorities of sidelink logical channels configured to the UE don't change, the UE doesn't trigger the priority list reporting. ### Claim 6 (depends on 1) The method according to claim 1, further comprising: checking whether a highest priority value among the one or more priorities of sidelink logical channels configured to the UE changes or not, when the UE checks whether the one or more priorities of sidelink logical channels configured to the UE change or not; and triggering the priority list reporting if the highest priority value changes. ### Claim 7 (depends on 1) The method according to claim 1, further comprising: checking whether a lowest priority value among the one or more priorities of sidelink logical channels configured to the UE changes or not, when the UE checks whether the one or more priorities of sidelink logical channels configured to the UE change or not; and triggering the priority list reporting if the lowest priority value changes. ### Claim 8 (depends on 1) The method according to claim 1, wherein the information of priority of sidelink logical channels configured for the UE currently includes: priorities of all of the sidelink logical channels configured for the UE regardless of ProSe Group, or at least one of a lowest priority or a highest priority among priorities of all of the sidelink logical channels configured for the UE regardless of ProSe Group, or priorities of all of the sidelink logical channels of a ProSe Group and ProSe Group identifier, or at least one of a lowest priority or a highest priority among priorities of all of the sidelink logical channels of a ProSe Group and ProSe Group identifier. ### Claim 9 A User Equipment (UE) for operating in a wireless communication system, the UE comprising: a Radio Frequency (RF) module; and a processor operably coupled with the RF module and configured to: configure a plurality of sidelink logical channels with a respective priority, check whether one or more priorities of sidelink logical channels configured to the UE changes or not when a new sidelink logical channel is configured, or when one of the configured sidelink logical channels, trigger a priority list reporting including information of priority of sidelink logical channels configured for the UE currently if the UE considers that the one or more priorities of sidelink logical channels configured to the UE change, and transmit the priority list reporting to an eNode-B. ### Claim 10 (depends on 9) The UE according to claim 9, wherein the UE considers that the one or more priorities of sidelink logical channels configured to the UE change: if a new sidelink logical channel with a first priority is configured to the UE and there wasn't any other sidelink logical channel with the first priority already configured to the UE, or if a configured sidelink logical channel with a second priority is released and there is no more sidelink logical channel with the second priority configured to the UE. ### Claim 11 (depends on 9) The UE according to claim 9, wherein the priority is a ProSe Per-Packet Priority. ### Claim 12 (depends on 9) The UE according to claim 9, wherein the UE considers that the one or more priorities of sidelink logical channels configured to the UE don't change: if a new sidelink logical channel with a first priority is configured to the UE and there was other sidelink logical channel with the first priority already configured to the UE, or if a configured sidelink logical channel with a second priority is released and there is a sidelink logical channel with the second priority configured to the UE. ### Claim 13 (depends on 12) The UE according to claim 12, wherein if the UE considers that the one or more priorities of sidelink logical channels configured to the UE don't change, the UE doesn't trigger the priority list reporting. ### Claim 14 (depends on 9) The UE according to claim 9, wherein the processor is further configured to: check whether a highest priority value among the one or more priorities of sidelink logical channels configured to the UE changes or not, when the UE checks whether the one or more priorities of sidelink logical channels configured to the UE change or not, and trigger the priority list reporting if the highest priority value changes. ### Claim 15 (depends on 9) The UE according to claim 9, wherein the processor is further configured to: check whether a lowest priority value among the one or more priorities of sidelink logical channels configured to the UE change or not, when the UE checks whether the one or more priorities of sidelink logical channels configured to the UE change or not, and trigger the priority list reporting if the lowest priority value changes. ### Claim 16 (depends on 9) The UE according to claim 9, wherein the information of priority of sidelink logical channels configured for the UE currently includes: priorities of all of the sidelink logical channels configured for the UE regardless of ProSe Group, or at least one of a lowest priority or a highest priority among priorities of all of the sidelink logical channels configured for the UE regardless of ProSe Group, or priorities of all of the sidelink logical channels of a ProSe Group and ProSe Group identifier, or at least one of a lowest priority or a highest priority among priorities of all of the sidelink logical channels of a ProSe Group and ProSe Group identifier.