US 9,814,045 B2
Method and apparatus for transmitting buffer status report in wireless communication system supporting device to device communication
Ki Bum Kwon, Seoul (KR)
Assigned to Innovative Technology Lab Co., Ltd., Seoul (KR)
Filed by Innovative Technology Lab Co., Ltd., Seoul (KR)
Filed on Aug. 7, 2015, as Appl. No. 14/821,661.
Claims priority of application No. 10-2014-0102091 (KR), filed on Aug. 8, 2014.
Prior Publication US 2016/0044678 A1, Feb. 11, 2016
Int. Cl. H04W 4/00 (2009.01); H04W 72/04 (2009.01); H04W 28/02 (2009.01); H04W 76/04 (2009.01); H04W 72/02 (2009.01); H04L 12/725 (2013.01); H04W 76/02 (2009.01)
CPC H04W 72/0453 (2013.01) [H04L 45/302 (2013.01); H04W 28/0278 (2013.01); H04W 72/02 (2013.01); H04W 76/023 (2013.01); H04W 76/046 (2013.01); H04W 76/021 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of supporting a device-to-device (D2D) communication, the method comprising:
establishing a radio resource control (RRC) connection with an evolved NodeB (eNB);
receiving, by a user equipment (UE), configuration information associated with a D2D communication from the eNB, the configuration information comprising information of a resource selection mode for a D2D data transmission, the information of a resource selection mode indicating a resource pool from which the UE selects a resource for a D2D data transmission to another UE;
identifying, based on a D2D discovery procedure, D2D target identities of a plurality of target UEs;
mapping a D2D target identity of a first target UE, among the plurality of target UEs, to a first group identity, and mapping a D2D target identity of a second target UE, among the plurality of target UEs, to a second group identity;
generating an RRC message to be transmitted to the eNB, the RRC message comprising information of the D2D target identity of the first target UE and information of the D2D target identity of the second target UE;
transmitting the RRC message to the eNB;
generating a MAC-laver message to be transmitted to the eNB, the MAC-layer message comprising a first field that indicates mapping information between the first group identity and the D2D target identity of the first UE and a second field that indicates mapping information between the second group identity and the D2D target identity of the second UE; and
transmitting the MAC-layer message to the eNB.