发明Evolved node B and method for coherent coordinated multipoint transmission with per CSI-RS feedback

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申请号 US201213525509 申请日 2012年06月18日 最早公开日 2013年08月01日 所属国家/地区 美国
公开号及公开日 US2013194943A1   2013年08月01日
US8953478B2   2015年02月10日
授权日 2015年02月10日 说明书附图
申请人 DAVYDOV ALEXEI (俄罗斯联邦)  
MOROZOV GREGORY (俄罗斯联邦)  
MALTSEV ALEXANDER (俄罗斯联邦)  
BOLOTIN IIYA (俄罗斯联邦)  
SERGEYEV VADIM (俄罗斯联邦)  
发明人 DAVYDOV ALEXEI   MOROZOV GREGORY   MALTSEV ALEXANDER   BOLOTIN IIYA   SERGEYEV VADIM  
优先权 US201261591641P   20120127US201213525509   20120618
专利分类号 H04W24/10  
代理机构 Schwegman Lundberg & Woessner   代理人

名称及摘要

Evolved node B and method for coherent coordinated multipoint transmission with per CSI-RS feedback
An evolved Node B (eNB) and method for coherent coordinated multipoint transmission with per CSI-RS feedback are generally described herein. The eNB may configure a first cooperating point and a second cooperating point to jointly transmit a multi-node channel-state information (CSI) reference signal (RS) (CSI-RS) in predetermined resource elements of a resource block. The eNB may receive CSI reports as feedback from user equipment (UE). The CSI reports may include a precoding matrix indicator (PMI) indicating relative phase information between the cooperating points based on the multi-node CSI-RS. The CSI reports for the multi-node CSI-RS may be restricted to a PMI of rank-1. The eNB may configure the cooperating points for a coherent joint transmission to the UE based at least on the relative phase information. The coherent joint transmission may also be jointly beamformed based on single-node PMIs.
Evolved node B and method for coherent coordinated multipoint transmission with per CSI-RS feedback
An evolved Node B (eNB) and method for coherent coordinated multipoint transmission with per CSI-RS feedback are generally described herein. The eNB may configure a first cooperating point and a second cooperating point to jointly transmit a multi-node channel-state information (CSI) reference signal (RS) (CSI-RS) in predetermined resource elements of a resource block. The eNB may receive CSI reports as feedback from user equipment (UE). The CSI reports may include a precoding matrix indicator (PMI) indicating relative phase information between the cooperating points based on the multi-node CSI-RS. The CSI reports for the multi-node CSI-RS may be restricted to a PMI of rank-1. The eNB may configure the cooperating points for a coherent joint transmission to the UE based at least on the relative phase information. The coherent joint transmission may also be jointly beamformed based on single-node PMIs.

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