Invention Grant
- Patent Title: Method and device for transmitting and receiving channel state information in downlink coordinated multi-point system
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Application No.: US15484029Application Date: 2017-04-10
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Publication No.: US10396958B2Publication Date: 2019-08-27
- Inventor: Hyo Jin Lee , Youn Sun Kim , Ki Il Kim , Ju Ho Lee , Joon Young Cho
- Applicant: Samsung Electronics Co., Ltd
- Applicant Address: KR Suwon-si
- Assignee: Samsung Electronics Co., Ltd.
- Current Assignee: Samsung Electronics Co., Ltd.
- Current Assignee Address: KR Suwon-si
- Main IPC: H04L5/00
- IPC: H04L5/00 ; H04B7/024 ; H04B7/0456 ; H04B7/06

Abstract:
The present invention relates to a method and device for transmitting and receiving CSI (Channel State Information). A CSI transmission method at a CoMP (Coordinated Multi-Point) device includes steps of receiving a CSI-RS (Reference Signal) from a plurality of transmission points, acquiring an optimal phase difference value causing an optimal channel quality between the plurality of transmission points, based on the CSI-RS, acquiring a CQI (Channel Quality Indicator), based on the optimal phase difference value, and transmitting the CSI including the CQI. According to an embodiment of the present invention, efficient CSI transmission/reception method and device can be provided in a CoMP system.
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