Method and apparatus for transmitting or receiving downlink signal

摘要

A method for receiving a downlink signal by user equipment in a wireless communication system that supports coordinated multiple-point transmission and reception (CoMP) according to one embodiment of the present invention includes receiving information regarding two candidate demodulation reference signal (DMRS) groups for generating a sequence of downlink demodulation reference signals; and generating a sequence of downlink demodulation reference signals using one of at least two candidate DMRS configuration parameter sets. Each of at least two candidate DMRS configuration parameter sets includes a cell identifier and a scrambling identifier. The scrambling identifier included in one of at least two candidate DMRS configuration parameter sets may be determined whether the two cell identifiers included respectively in at least two candidate DMRS configuration parameter sets are the same or not.

主权项

1. A method for receiving a downlink signal by a User Equipment (UE) in a wireless communication system supporting Coordinated Multiple Point transmission and reception (CoMP), the method comprising:
receiving information about at least two candidate Demodulation Reference Signal (DMRS) configuration parameter sets for generating a sequence of a downlink DMRS; and generating the sequence of the downlink DMRS using one of the at least two candidate DMRS configuration parameter sets, wherein each of the at least two candidate DMRS configuration parameter sets includes a cell identity and a scrambling identity, and wherein the scrambling identity included in one of the at least two candidate DMRS configuration parameter sets is determined based on whether two cell identities respectively included in the at least two candidate DMRS configuration parameter sets are identical to each other.