Invention Grant
- Patent Title: Method and apparatus for multiple input multiple output distributed antenna arrays
- Patent Title (中): 多输入多输出分布式天线阵列的方法和装置
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Application No.: US13246326Application Date: 2011-09-27
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Publication No.: US08599960B2Publication Date: 2013-12-03
- Inventor: Tommi Koivisto , Mihai Enescu , Timo Roman , Karol Schober
- Applicant: Tommi Koivisto , Mihai Enescu , Timo Roman , Karol Schober
- Applicant Address: JP Tokyo
- Assignee: Renesas Mobile Corporation
- Current Assignee: Renesas Mobile Corporation
- Current Assignee Address: JP Tokyo
- Agency: Alston & Bird LLP
- Main IPC: H04L27/00
- IPC: H04L27/00

Abstract:
A method, apparatus and computer program product are provided for reporting low rank feedback information for each transmission point up to a maximum rank per transmission point. In this regard, a method includes determining a transmission rank and a precoding matrix for each of at least two transmission points of a plurality of transmission points. A method also includes determining a joint transmission rank based on at least two of the plurality of transmission points. A method also includes selecting a joint transmission precoding matrix based on the determined precoding matrix for each of the at least two transmission points and the determined joint transmission rank. The method further includes causing channel state information “CSI” to be transmitted to an access point, wherein the CSI describes the selected joint transmission precoding matrix.
Public/Granted literature
- US20130077707A1 METHOD AND APPARATUS FOR MULITPLE INPUT MULTIPLE OUTPUT DISTRIBUTED ANTENNA ARRAYS Public/Granted day:2013-03-28
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