US Patent No. 9,860,859

APPARATUS AND METHOD FOR ALIGNING DISCOVERY CHANNEL INTERVALS AMONG CELLS IN CELLULAR COMMUNICATION SYSTEM


Patent No. 9,860,859
Issue Date January 02, 2018
Title Apparatus And Method For Aligning Discovery Channel Intervals Among Cells In Cellular Communication System
Inventorship Hyung-Jin Choi, Seoul (KR)
Hyun-Seok Ryu, Yongin-si (KR)
Seung-Hoon Park, Seoul (KR)
Kyung-Hoon Lee, Seoul (KR)
Assignee Samsung Electronics Co., Ltd., Suwon-si (KR)

Claim of US Patent No. 9,860,859

1. A method for aligning discovery channel intervals of a serving cell and a neighbor cell, by a serving evolved node b (eNB)
managing the serving cell, in a cellular communication system, the method comprising:
selecting at least one user equipment (UE) being located in the serving cell and operates in a radio resource control (RRC)
connected mode;

transmitting, to the at least one UE, a request message requesting information related to a discovery channel of the neighbor
cell;

receiving, from the at least one UE, a temporally adjusted value obtained by shifting the discovery channel with respect to
a frame reference time of the neighbor cell, or a network time difference (NTD) between the serving cell and the neighbor
cell; and

aligning a discovery channel interval of the serving cell to a discovery channel interval of the neighbor cell based on the
at least one of the temporally adjusted value, or the NTD.