Method and apparatus for receiving control information through EPDCCH in wireless communication system

摘要

A method and user equipment (UE) are provided for receiving control information through an enhanced physical downlink control channel (EPDCCH) in a wireless communication system. The UE indexes resource elements (REs) included in a physical resource block (PRB) set of a received subframe with ‘n’ enhanced resource element groups (EREGs) per PRB pair, and indexes the ‘n’ EREGs to ‘m’ enhanced control channel elements (ECCEs) per PRB pair. The UE determines an EPDCCH candidate constituting a UE-specific search space based on the ‘m’ ECCEs and performs blind decoding, When a size of an EREG is fixed, ‘n’ is determined based on a number of REs available for a PRB pair and the size of the EREG, and ‘m’ is determined by ‘n’ and a number of EREGs per ECCE.

主权项

1. A method for receiving control information through an enhanced physical downlink control channel (EPDCCH) at a user equipment (UE) in a wireless communication system, the method comprising:
indexing, by the UE, resource elements (REs) included in a physical resource block (PRB) set of a received subframe with ‘n’ enhanced resource element groups (EREGs) per PRB pair; indexing, by the UE, the ‘n’ EREGs to ‘m’ enhanced control channel elements (ECCEs) per PRB pair; and determining, by the UE, an EPDCCH candidate constituting a UE-specific search space based on the ‘m’ ECCEs and performing blind decoding, wherein when a size of an EREG is fixed, ‘n’ is determined based on a number of REs available for a PRB pair and the size of the EREG, and wherein ‘m’ is determined by ‘n’ and a number of EREGs per ECCE.