APPARATUS AND METHOD FOR ALLOCATING CHANNEL STATE INFORMATION-REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM

摘要

Embodiments of the present invention relate to a wireless communication system, and more particularly, to a technology for allocating a Channel State Information-Reference Signal (CSI-RS) in a wireless communication system. Embodiments of the present invention provides an apparatus and method for allocating CSI-RSs to resource areas, in which, under the condition of a subframe in which the CP is an extended CP, and the duplex scheme is TDD, if CSI-RSs for maximum 8 antenna ports are allocated, the CSI-RSs are allocated to the 8th and 9th symbols (symbol No. l=7 and 8), wherein each CSI-RS for every two antenna ports is allocated to the same RE while being discriminated from each other by an orthogonal code and neighbor CSI-RS allocated REs in the frequency axis are spaced by an interval of three REs.

主权项

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.