Method and device for allocating a downlink control channel in a wireless communication system

摘要

Provided are a method and device for allocating a downlink control channel in a wireless communication system. A base station allocates an enhanced physical control format indicator channel (e-PCFICH) to a control region of a plurality of resource blocks (RBs), transmits, to a terminal, an enhanced physical downlink control channel (e-PDCCH) indicator including information for indicating the start position of an e-PDCCH allocated to a data region of the plurality of RBs, and allocates the e-PDCCH to the data region of the plurality of RBs on the basis of the e-PDCCH indicator.

主权项

1. A method for a base station transmitting a signal associated with a control region including a common search space and a user equipment (UE)-specific search space in a wireless communication system, the method comprising:
allocating a radio network temporary identifier (RNTI) only to at least one UE supporting an enhanced physical downlink control channel (e-PDCCH); allocating a physical control format indicator channel (PCFICH) indicating a number of Orthogonal Frequency Division Multiplexing (OFDM) symbols dedicated for the control region and a physical downlink control channel (PDCCH) in the control region; configuring an enhanced PCFICH (e-PCFICH) in the PDCCH, the e-PCFICH masked based on the RNTI and included in the UE-specific search space and including an enhanced physical downlink control channel (e-PDCCH) indicator, the e-PDCCH indicator is a bitmap indicating at least one resource block (RB) group carrying the e-PDCCH, each RB group including a plurality of RBs and only an initial RB in each resource block group is used for carrying the e-PDCCH; transmitting the PCFICH and the PDCCH including the e-PCFICH in the control region; allocating the e-PDCCH based on the e-PDCCH indicator, the e-PDCCH included in a data region; and transmitting the e-PDCCH in the data region, wherein a plurality of OFDM symbols dedicated for the data region follow the number of OFDM symbols dedicated for the control region.