US 9,813,975 B2
Mechanism for discovery of small cells
Pengfei Sun, Beijing (CN); Na Wei, Beijing (CN); Erlin Zeng, Beijing (CN); Chunyan Gao, Beijing (CN); Haiming Wang, Beijing (CN); and Wei Bai, Beijing (CN)
Assigned to Avago Technologies General IP (Singapore) Pte. Ltd., Singapore (SG)
Appl. No. 14/426,284
Filed by Pengfei Sun, Beijing (CN); Na Wei, Beijing (CN); Erlin Zeng, Beijing (CN); Chunyan Gao, Beijing (CN); Haiming Wang, Beijing (CN); and Wei Bai, Beijing (CN)
PCT Filed Sep. 13, 2012, PCT No. PCT/CN2012/081347
§ 371(c)(1), (2), (4) Date Mar. 5, 2015,
PCT Pub. No. WO2014/040258, PCT Pub. Date Mar. 20, 2014.
Prior Publication US 2015/0195770 A1, Jul. 9, 2015
Int. Cl. H04W 48/12 (2009.01); H04J 1/08 (2006.01); H04J 11/00 (2006.01); H04L 5/00 (2006.01); H04W 84/04 (2009.01)
CPC H04W 48/12 (2013.01) [H04J 1/08 (2013.01); H04J 11/0079 (2013.01); H04L 5/0007 (2013.01); H04L 5/0048 (2013.01); H04W 84/042 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method comprising:
controlling a discovery procedure for discovering a plurality of secondary cells located in a communication area of a primary cell, the discovery procedure using a discovery signal communicated via a physical discovery channel;
configuring a signaling of the discovery signal, wherein the discovery signal is based on a positioning reference signal;
preparing assistance information, associated with the configuration of the signaling of the discovery signal, indicating grouping information for indicating a group of two or more secondary cells of the plurality of secondary cells from which a respective discovery signal is received concurrently by a user equipment (UE);
applying, when configuring the signaling of the discovery signal,
frequency domain multiplexing for splitting resources of the positioning reference signal in a frequency domain by allocating serials of blocks of consecutive resource blocks forming a respective orthogonal resource to each of a plurality of positioning reference channels, each channel of the plurality of positioning reference channels is configured to be used by a secondary cell of the plurality of secondary cells;
detecting the group of the two or more secondary cells on the basis of a common discovery signal of the group; and
determining a preferred single secondary cell of the group based on information derived from resource elements of reserved communication resources comprising sequences associated with resources of the positioning reference signal.