# US 2017/0290028 A1 · Method for prohibiting from triggering scheduling request 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 2017/0290028 A1 - Document ID: US20170290028A1 - Status: Published application - Kind: A1 - Application number: 15/507,627 - Filed: 2015-07-27 - Published: 2017-10-05 - Earliest claimed: 2014-10-30 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Sunyoung LEE; Seungjune YI - Web page: https://patentgrep.com/patent/US20170290028A1 ## CPC - H04W 72/12: Wireless traffic scheduling - H04W 28/02: Traffic management, e.g. flow control or congestion control - H04W 72/20: Control channels or signalling for resource management - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 72/121: for groups of terminals or users - 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 prohibiting from triggering scheduling request in a D2D communication system, the method comprising: configuring that the UE belongs to one or more ProSe groups; receiving, from a network, a Scheduling Request (SR) prohibit indication indicating at least one of the one or more ProSe groups; triggering a sidelink BSR for a first ProSe group of the one or more ProSe groups when a sidelink BSR trigger condition is met; and triggering a SR if the SR prohibit indication doesn't indicate the first ProSe group. ## Claims ### Claim 1 A method for a User Equipment (UE) operating in a wireless communication system, the method comprising: configuring that the UE belongs to one or more ProSe groups; receiving, from a network, a Scheduling Request (SR) prohibit indication indicating at least one of the one or more ProSe groups; triggering a sidelink BSR for a first ProSe group of the one or more ProSe groups when a sidelink BSR trigger condition is met; and triggering a SR if the SR prohibit indication doesn't indicate the first ProSe group. ### Claim 2 (depends on 1) The method according to claim 1, wherein the first ProSe group is defined as at least one of: a set of logical channels with a same target identified by a group identifier; or a set of logical channels with a same target identified by a destination identifier; or a set of logical channels with a same source identified by a source identifier and a same target identified by a destination identifier; or a set of logical channels with a group index which is mapped to a same group identifier. ### Claim 3 (depends on 1) The method according to claim 1, further comprising: transmitting, to the network, a list of the one or more ProSe groups to which the UE belongs, wherein the list of the one or more ProSe groups to which the UE belongs includes an UE identifier, a group identifier, destination identifier, or group index which identifies the first ProSe group. ### Claim 4 (depends on 1) The method according to claim 1, wherein when the UE receives a SR prohibit indication indicating the first ProSe group, the UE considers that Buffer Status Report (BSR) triggered in the first ProSe group does not trigger an SR; or the UE considers that SR not pending even though the SR is triggered and not cancelled if the SR is triggered by the BSR in the first ProSe group. ### Claim 5 (depends on 1) The method according to claim 1, wherein the SR is not trigged if the SR prohibit indication indicates the first ProSe group. ### Claim 6 (depends on 1) The method according to claim 1, further comprising: from the network, a SR resume indication indicating the first ProSe group; triggering a sidelink BSR for the first ProSe group indicated by the SR resume indication when a sidelink BSR trigger condition is met; and triggering a SR. ### Claim 7 A method for a User Equipment (UE) operating in a wireless communication system, the method comprising: configuring that the UE belongs to one or more ProSe groups; receiving, from a network, a Scheduling Request (SR) prohibit indication indicating at least one of the one or more ProSe group; starting a prohibit timer for each ProSe group indicated by the SR prohibit indication; triggering a sidelink BSR for a first ProSe group of the one or more ProSe groups when a sidelink BSR trigger condition is met; and triggering a SR if a prohibit timer for the first ProSe group is not running. ### Claim 8 (depends on 7) The method according to claim 7, wherein the SR is not trigged if the prohibit timer for the first ProSe group is running. ### Claim 9 (depends on 7) The method according to claim 7, wherein the SR prohibit indication includes an UE identifier, a group identifier, destination identifier, or group index which identifies the first ProSe group, and value of the prohibit timer. ### Claim 10 (depends on 7) The method according to claim 7, wherein the prohibit timer can be pre-defined for the UE and the network. ### Claim 11 (depends on 7) The method according to claim 7, wherein the prohibit timer is a period of time duration, wherein the period of time duration defines a number of subframes, a certain time duration, or a number of SR trigger. ### Claim 12 (depends on 7) The method according to claim 7, further comprising: receiving, from the network, a SR resume indication indicating the first ProSe group; and stopping the prohibit timer for the first ProSe group. ### Claim 13 (depends on 7) The method according to claim 7, further comprising: if the prohibit timer expires, triggering a sidelink BSR for a first ProSe group of the one or more ProSe groups when the sidelink BSR trigger condition is met. ### Claim 14 (depends on 7) The method according to claim 7, wherein if the prohibit timer expires, when the SR is triggered by the sidelink BSR in the first ProSe group, the UE considers that the SR is pending until when the SR is cancelled if the SR is triggered by the sidelink BSR in the first ProSe group. ### Claim 15 (depends on 1) A communication apparatus adapted to carry out the method of claim 1. ### Claim 16 (depends on 2) A communication apparatus adapted to carry out the method of claim 2. ### Claim 17 (depends on 3) A communication apparatus adapted to carry out the method of claim 3. ### Claim 18 (depends on 7) A communication apparatus adapted to carry out the method of claim 7. ### Claim 19 (depends on 8) A communication apparatus adapted to carry out the method of claim 8. ### Claim 20 (depends on 9) A communication apparatus adapted to carry out the method of claim 9.