Invention Grant
US08625450B2 Channel state information feedback for enhanced downlink multiple input—multiple output operation
有权
信道状态信息反馈,用于增强下行链路多输入多输出操作
- Patent Title: Channel state information feedback for enhanced downlink multiple input—multiple output operation
- Patent Title (中): 信道状态信息反馈,用于增强下行链路多输入多输出操作
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Application No.: US13080347Application Date: 2011-04-05
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Publication No.: US08625450B2Publication Date: 2014-01-07
- Inventor: Timo Lunttila , Tommi Koivisto , Timo Roman , Mihai Enescu
- Applicant: Timo Lunttila , Tommi Koivisto , Timo Roman , Mihai Enescu
- Applicant Address: FI Espoo
- Assignee: Nokia Corporation
- Current Assignee: Nokia Corporation
- Current Assignee Address: FI Espoo
- Agency: Harrington & Smith
- Main IPC: H04L12/26
- IPC: H04L12/26 ; H04W4/00 ; G06F11/00

Abstract:
In accordance with the exemplary embodiments of the invention there is deriving multiple input-multiple output feedback information using a set of precoding matrices associated with at least one precoding codebook, signaling, in a first plurality of resource elements, channel state information associated with a first precoding matrix indicator of the set of precoding matrices jointly with a transmission rank, and signaling separately, in a second plurality of resource elements, channel state information associated with a second precoding matrix indicator of the set of precoding matrices. In addition, there is receiving signaling in a first plurality of resource elements of channel state information associated with a first precoding matrix indicator of a set of precoding matrices jointly with a transmission rank, receiving signaling separately in a second plurality of resource elements of channel state information associated with a second precoding matrix indicator of the set of precoding matrices, and controlling a downlink multiple input-multiple output transmission in accordance with the received signaling.
Public/Granted literature
- US20120082042A1 CHANNEL STATE INFORMATION FEEDBACK FOR ENHANCED DOWNLINK MULTIPLE INPUT - MULTIPLE OUTPUT OPERATION Public/Granted day:2012-04-05
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