发明名称 Distributed generation of slow-fading post-coding vectors for LSAS communication networks and the like
摘要 In one embodiment, a cellular wireless communications network, such as a large-scale antenna system (LSAS) network, having multiple base stations is logically divided into overlapping, virtual, truncated networks, where each base station functions as the master of a different truncated network, and each truncated network also has one or more base stations that function as slaves to that master base station. Each master base station generates estimated slow-fading coefficients and a slow-fading post-coding (SFP) vector based only on the wireless units current located within its truncated network. In particular, to generate the SFP vector, the master collects estimated slow-fading coefficients and estimated uplink data symbols from its slaves. The master uses the SFP vector to update its own estimated uplink data symbols for the wireless units currently located within its own cell.
申请公布号 US9503913(B2) 申请公布日期 2016.11.22
申请号 US201414173230 申请日期 2014.02.05
申请人 Alcatel Lucent 发明人 Ashikhmin Alexei;Marzetta Thomas L.
分类号 H04W16/32;H04B17/21;H04B17/364;H04B17/373;H04B17/391;H04B7/02 主分类号 H04W16/32
代理机构 Mendelsohn Dunleavy, P.C. 代理人 Mendelsohn Dunleavy, P.C. ;Mendelsohn Steve
主权项 1. A communication network comprising N base stations, N>1, each base station configured to communicate with one or more wireless units within a corresponding cell, wherein: the network is logically divided into N overlapping, virtual, truncated networks; the each base station functions as a master base station for a different one of the N truncated networks; each truncated network comprises a subset of the N base stations, but not all of the N base stations, the subset consisting of the master base station and one or more slave base stations; the each truncated network shares at least one base station with at least one other truncated network; for the each truncated network, the master base station compensates its estimated uplink data for slow-fading characteristics based on slow-fading information received from only the one or more slave base stations; the master base station and the one or more slave base stations each generates its estimated fast- and slow-fading coefficients; the master base station and the one or more slave base stations each generates its estimated uplink data based on its estimated fast- and slow-fading coefficients; each slave base station transmits its estimated slow-fading coefficients and its estimated uplink data to the master base station; the master base station generates one or more slow-fading post-coding (SFP) vectors based on its own estimated slow-fading coefficients, its own estimated uplink data, the estimated slow-fading coefficients from the each slave base station, the estimated uplink data from each slave base station, uplink data transmit power for a corresponding wireless unit, and uplink pilot transmit power for the corresponding wireless unit; and the master base station updates its estimated uplink data based on the one or more SFP vectors.
地址 Boulogne-Billancourt FR