Patent ID: 9344245
Filing Date: 2016-05-17
CPC Classification: H04B,H04L

Claim Text:
1. A method for an apparatus comprising a processor for allocating Channel State Information-Reference Signals (CSI-RSs) for at lease two antenna ports in a wireless communication system that supports an extended Cyclic Prefix (CP) and a Time Division Duplex (TDD) mode, the method comprising: allocating, by the processor, CSI-RSs of a first pair of antenna ports to a first two consecutive Resource Elements (REs) in a time-frequency resource area determined by one subframe and 12 subcarriers, the first two consecutive REs corresponding to one subcarrier in a frequency axis and 8th and 9th symbols in a time axis, and the one subframe having 12 symbols for the extended CP, wherein a CSI-RS of a first antenna port and a CSI-RS of a second antenna port in the first pair of antenna ports are configured to be discriminated from each other by orthogonal codes.