- 专利标题: ENHANCED CSI FEEDBACK FOR FD-MIMO
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申请号: US15780451申请日: 2016-01-07
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公开(公告)号: US20180351621A1公开(公告)日: 2018-12-06
- 发明人: Chao WEI , Wanshi CHEN , Peter GAAL , Yu ZHANG
- 申请人: Chao WEI , Wanshi CHEN , Peter GAAL , Yu ZHANG , QUALCOMM Incorporated
- 国际申请: PCT/CN2016/070387 WO 20160107
- 主分类号: H04B7/06
- IPC分类号: H04B7/06 ; H04B7/0456 ; H04L5/00 ; H04W24/10
摘要:
Enhanced channel state information (CSI) feedback is disclosed for full dimensional multiple input, multiple output (FD-MIMO) operations. In one aspect, a CSI process is defined that may be used to identify an azimuth and elevation CSI-reference signal (RS) ports. A user equipment (UE) will send a precoding matrix indictor (PMI) report including a precoding matrix indicator (PMI) for the azimuth ports and a PMI for the elevation ports. One of the PMIs is assigned a low rank. The base station will use the two PMIs to create a whole channel precoding matrix. In another aspect, a single CSI process is configured having a plurality of CSI-RS resources. The UE generates channel measurement information for each of the CSI-RS resources, but only sets a CSI report to the base station of a subset of the total number of resources.
公开/授权文献
- US11121752B2 Enhanced CSI feedback for FD-MIMO 公开/授权日:2021-09-14