METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING A REFERENCE SIGNAL IN A WIRELESS COMMUNICATION SYSTEM

摘要

A base station apparatus for transmitting a reference signal in a wireless communication system is provided in which a processor generates the same sequence for resource elements (REs) allocated to each layer for reference signal transmission and spreads or covers Walsh codes for a user equipment-specific reference signal sequence such that sequences generated for the REs can be orthogonal to each other on a time axis. The Walsh code spreading or covering by the processor is applied on a frequency axis based on a plurality of resource blocks (RBs) or based on a pair of RBs such that mutually different sequences having mutually different sequence values can be mapped between RBs or between pairs of RBs. A transmission module transmits the reference signal, to which the generated reference signal sequence is applied to user equipment via each layer.

主权项

1. A method for an eNode B transmitting user equipment (UE)-specific reference signals in a wireless communication system, the method comprising:
generating sequences for resource elements (REs) allocated to each layer for transmitting the UE-specific reference signals; generating UE-specific reference signal sequences by applying a set of Walsh codes to the generated sequences for REs; and transmitting, via each layer, the UE-specific reference signals to which the generated UE-specific reference signal sequences are applied, wherein the set of Walsh codes is applied such that a mapping pattern of the set of Walsh codes mapped to a first resource block (RB) pair is different from a mapping pattern of the set of Walsh codes mapped to a second RB pair, and wherein the second RB pair is contiguous to the first RB pair in a frequency domain.