Invention Grant
- Patent Title: Distribution of cell-common downlink signals in a hierarchical heterogeneous cell deployment
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Application No.: US14925418Application Date: 2015-10-28
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Publication No.: US10588116B2Publication Date: 2020-03-10
- Inventor: George Jöngren , Lars Lindbom , Stefan Parkvall
- Applicant: Telefonaktiebolaget L M Ericsson (publ)
- Applicant Address: SE Stockholm
- Assignee: Telefonaktiebolaget LM Ericsson (publ)
- Current Assignee: Telefonaktiebolaget LM Ericsson (publ)
- Current Assignee Address: SE Stockholm
- Agency: Murphy, Bilak & Homiller, PLLC
- Main IPC: H04W72/04
- IPC: H04W72/04 ; H04L5/00 ; H04W16/32 ; H04L1/18 ; H04L25/03 ; H04L27/26 ; H04W88/06

Abstract:
A high-power point and one or more low-power points transmit signals that are associated with the same cell-identifier in a heterogeneous cell deployment. The coverage areas corresponding to the low-power points fall at least partly within the coverage area for the high-power point, so that mobile stations within range of a low-power point are also within range of the high-power point, from a downlink perspective. The same CRS signals are transmitted by both the high-power (macro) point and some or all of the low-power (pico) points. At the same time, the network transmits CRS-based PDSCH for a particular UE on both the high-power point as well as on some or all of the low-power points. 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.
Public/Granted literature
- US20160112998A1 Distribution of Cell-Common Downlink Signals in a Hierarchical Heterogeneous Cell Deployment Public/Granted day:2016-04-21
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