Quasi co-located antenna ports for channel estimation

US9203576B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9203576-B2
Application numberUS-201313917717-A
CountryUS
Kind codeB2
Filing dateJun 14, 2013
Priority dateAug 3, 2012
Publication dateDec 1, 2015
Grant dateDec 1, 2015

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Abstract

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Systems and methods are disclosed for estimating one or more channel properties of a downlink from a cellular communications network based on quasi co-located antenna ports with respect to the one or more channel properties. In one embodiment, a wireless device receives a downlink subframe including a downlink control channel from the cellular communications network. The wireless device estimates one or more large-scale channel properties for an antenna port of interest in the downlink control channel based on a subset of reference signals that correspond to antenna ports in the cellular communications network that are quasi co-located with the antenna port of interest with respect to the one or more large-scale channel properties. As a result of using the quasi co-located antenna ports, estimation of the one or more large-scale channel properties is substantially improved.

First claim

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What is claimed is: 1. A wireless device configured to operate in a cellular communications network, comprising: a radio subsystem; and a processing subsystem associated with the radio subsystem configured to: receive, via the radio subsystem, a downlink subframe comprising a downlink control channel from the cellular communications network, a search space of the wireless device with respect to the downlink control channel comprising one or more sets of downlink control channel…

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What does patent US9203576B2 cover?
Systems and methods are disclosed for estimating one or more channel properties of a downlink from a cellular communications network based on quasi co-located antenna ports with respect to the one or more channel properties. In one embodiment, a wireless device receives a downlink subframe including a downlink control channel from the cellular communications network. The wireless device estimat…
Who is the assignee on this patent?
Ericsson Telefon Ab L M
What technology area does this patent fall under?
Primary CPC classification H04L5/0023. Mapped technology areas include Electricity.
When was this patent published?
Publication date Tue Dec 01 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).