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1. (WO2017168254) METHOD AND APPARATUS OF SHARING CSI-RS RESOURCE

Pub. No.:    WO/2017/168254    International Application No.:    PCT/IB2017/000460
Publication Date: Fri Oct 06 01:59:59 CEST 2017 International Filing Date: Sat Apr 01 01:59:59 CEST 2017
IPC: H04B 7/04
H04B 7/0452
H04B 7/06
Applicants: ALCATEL LUCENT
Inventors: ZHANG, Qingchuan
ZHANG, Min
LI, Xun
Title: METHOD AND APPARATUS OF SHARING CSI-RS RESOURCE
Abstract:
Embodiments of the present disclosure provide a method and apparatus of sharing a channel state information reference signal resource. The method comprises: obtaining information about a plurality of beam groups, each of the plurality of beam groups being configured to transmit, to one of a plurality of user equipment (UEs), a beamformed CSI-RS specific to the UE; determining degrees of spatial isolation among the plurality of beam groups based on the obtained information; comparing each of the determined degrees of spatial isolation with a predetermined threshold; and in response to each of the determined degrees of spatial isolation being above the threshold, transmitting, on the CSI-RS resource, beamformed CSI-RSs specific to the plurality of UEs. The embodiments of the present disclosure may improve the efficiency of UE specific beamformed CSI-RS by exploiting the characteristic of beamforming operation.