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1. (WO2014206456) ESTABLISHING A COMMUNICATION LINK BETWEEN USER EQUIPMENTS

Pub. No.:    WO/2014/206456    International Application No.:    PCT/EP2013/063375
Publication Date: Thu Jan 01 00:59:59 CET 2015 International Filing Date: Thu Jun 27 01:59:59 CEST 2013
IPC: H04L 5/00
H04L 27/00
Applicants: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
ERICSSON TELECOMUNICACOES S.A.
Inventors: GUERREIRO, Igor, M.
MACIEL, Tarcisio F.
NETO, Francisco H. C.
CAVALCANTI, Francisco R. P.
Title: ESTABLISHING A COMMUNICATION LINK BETWEEN USER EQUIPMENTS
Abstract:
Methods and apparatus for establishing a communication link between a first user equipment and at least one other user equipment in a radio communication cell (102) using a radio frequency spectrum divided into a plurality of channels. The first user equipment comprises a tuner (208) configured to tune a communication unit (203) to channels of a channel sequence vector in order. The channel sequence vector comprises at least a partial vectorization of a symmetric Toeplitz matrix formed from a set of the plurality of channels. The communication unit is configured, at each channel, to receive link data for establishing a communication link with the at least one other user equipment. A link establisher (210) is configured to establish a communication link with the at least one other user equipment over the tuned channel if the link data is received.