Patent ID: 8948281
Filing Date: 2015-02-03
Classification: H04L,H04W

Abstract:
1. A method for performing a scheduling operation by a serving evolved node B (eNB) in a multiple-input multiple-output (MIMO) communication system, the method comprising: receiving, from a user equipment (UE), a channel covariance matrix for the serving eNB and a channel covariance matrix for a first neighbor eNB with a highest interference among a plurality of neighbor eNBs; generating received signal power information for each subband-beam pair; generating a first interference signal power information for each subband-beam pair for the first neighbor eNB; exchanging the first interference signal power information for a second interference signal power information generated by the first neighbor eNB for each subband-beam pair; generating a first beam coordination information indicating a use status of each beam in each subband for the UE using the received signal power information and the second interference signal power information; exchanging the first beam coordination information for a second beam coordination information generated by the first neighbor eNB; determining available beams in each subband for the UE based on the first beam coordination information and the second beam coordination information; and determining at least one of the available beams as at least one beam to be used for the UE, wherein an inner product value between the at least one beam to be used for the UE and at least one unused beam in each subband is smaller than a predetermined value.