Invention Grant
- Patent Title: Channel state information sending method, channel state information receiving method, and device
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Application No.: US16146599Application Date: 2018-09-28
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Publication No.: US10270505B2Publication Date: 2019-04-23
- Inventor: Ruiqi Zhang , Xueru Li , Di Zhang
- Applicant: HUAWEI TECHNOLOGIES CO., LTD.
- Applicant Address: CN Shenzhen
- Assignee: HUAWEI TECHNOLOGIES CO., LTD.
- Current Assignee: HUAWEI TECHNOLOGIES CO., LTD.
- Current Assignee Address: CN Shenzhen
- Agent Gregg L. Jansen
- Priority: CN201710459616 20170616
- Main IPC: H04B7/02
- IPC: H04B7/02 ; H04B7/0456 ; H04B7/06 ; H04B7/0413

Abstract:
A channel state information sending method, a channel state information receiving method, and a device are disclosed, to reduce resource overheads required when a terminal device feeds back CSI to a network device in a scenario of a high precision codebook-based precoding matrix. The method includes: determining, by a terminal device, a precoding matrix W; sending, by the terminal device, a signal including CSI to a network device; obtaining, by the network device, an RI and indication information based on the signal including the CSI; obtaining, by the network device, a PMI2 based on the RI and the indication information; and determining, by the network device, the precoding matrix W based on the rank indicator RI and the second precoding matrix indicator PMI2.
Public/Granted literature
- US20190036581A1 CHANNEL STATE INFORMATION SENDING METHOD, CHANNEL STATE INFORMATION RECEIVING METHOD, AND DEVICE Public/Granted day:2019-01-31
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