发明授权
- 专利标题： Efficient use of reference symbol resources in a hierarchical heterogeneous cell deployment
- 专利标题（中）： 在分层异构单元部署中有效利用参考符号资源
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申请号： US13389490申请日： 2011-11-02
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公开(公告)号： US08995293B2公开(公告)日： 2015-03-31
- 发明人: George Jöngren , Lars Lindbom , Stefan Parkvall
- 申请人： George Jöngren , Lars Lindbom , Stefan Parkvall
- 申请人地址： SE Stockholm
- 专利权人： Telefonaktiebolaget L M Ericsson (publ)
- 当前专利权人： Telefonaktiebolaget L M Ericsson (publ)
- 当前专利权人地址： SE Stockholm
- 代理机构： Murphy, Bilak & Homiller, PLLC
- 国际申请： PCT/SE2011/051306 WO 20111102
- 国际公布： WO2012/108805 WO 20120816
- 主分类号： H04L12/26
- IPC分类号： H04L12/26 ; H04W24/10 ; H04L5/00 ; H04W72/12
摘要：
Techniques for collecting channel-state-information, CSI, feedback in a wireless network that comprises a plurality of geographically separated transmission points (110, 120) include methods in which a set of CSI reference symbol, CSI-RS, resources are identified, which correspond to the union of CSI-RS resources used by multiple transmission points (110, 120) in the primary transmission point's coverage area. A mobile station (130) is configured to measure CSI-RS on a subset of the CSI-RS resources, the subset corresponding to CSI-RS resources used by a subset of the transmission points (110, 120). The mobile station (130) is also configured to assume that no downlink data will be transmitted in the remaining portion of the set of CSI-RS resources. CSI feedback is then received from the mobile station (130), based on measurements of the CSI-RS.
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