发明授权
US09300450B2 Distribution of cell-common downlink signals in a hierarchical heterogeneous cell deployment
有权
分层异构单元部署中的小区公共下行链路信号的分布
- 专利标题: Distribution of cell-common downlink signals in a hierarchical heterogeneous cell deployment
- 专利标题(中): 分层异构单元部署中的小区公共下行链路信号的分布
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申请号: US13389501申请日: 2011-11-02
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公开(公告)号: US09300450B2公开(公告)日: 2016-03-29
- 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/SE2011/051307 WO 20111102
- 国际公布: WO2012/108806 WO 20120816
- 主分类号: H04W4/00
- IPC分类号: H04W4/00 ; H04L5/00 ; H04L1/18 ; H04L25/03 ; H04L27/26 ; H04W88/06
摘要:
A high-power point (110) and one or more low-power points (120) transmit signals that are associated with the same cell-identifier in a heterogeneous cell deployment. The coverage areas corresponding to the low-power points (120) fall at least partly within the coverage area for the high-power point (110), so that mobile stations (130) within range of a low-power point are also within range of the high-power point (110), from a downlink perspective. The same CRS signals are transmitted by both the high-power (macro) point (110) and some or all of the low-power (pico) points (120). At the same time, the network transmits CRS-based PDSCH for a particular UE on both the high-power point (110) as well as on some or all of the low-power points (120). In some embodiments only a subset of the points, e.g., those points that the UE hears sufficiently well, participate in the PDSCH transmission using CRS for channel estimation.
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