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Methods and apparatus for selecting reference signal tones for decoding a channel

A reference signal and tone technology, applied in the field of reference signals, can solve problems such as communication interference of macro cell base stations

Inactive Publication Date: 2013-12-18
QUALCOMM INC
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  • Claims
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Problems solved by technology

However, a device may wish to communicate and / or establish a connection with a lower power base station (e.g., to receive additional services, increased data rates, or other factors that may improve overall system performance), in which case the macrocell base station may cause Interference at a device from communication of a femto node

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  • Methods and apparatus for selecting reference signal tones for decoding a channel
  • Methods and apparatus for selecting reference signal tones for decoding a channel
  • Methods and apparatus for selecting reference signal tones for decoding a channel

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Embodiment Construction

[0031] Various aspects are now described with reference to the figures. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more aspects. It may be evident, however, that such aspects may be practiced without these specific details.

[0032] Various considerations related to estimating the channel of a femto node or other lower power base station based in part on the quality of interference-cancelled reference signal (RS) tones are further described herein. While aspects described herein often refer to femto nodes, it should be appreciated that substantially any low power base station can be used to perform the functionality described herein and achieve the results described herein, such as a Home Node B or Home eNode B (H( e) NB), pico node, micro node, etc. For example, the device may decode the broadcast channel of the macrocell base station using the channel estimate fro...

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Abstract

Methods and apparatuses are provided that include selecting reference signal (RS) or other tones to utilize in estimating a channel for decoding one or more channels. Where the RS tones are interfered by other base stations, interference cancelation can be performed over the RS tones. Since interference can vary over the tones, interference cancelation can yield RS tones of varying quality. Thus, a quality of each of the RS tones can be determined, and at least a subset of the RS tones can be selected for estimating a channel. Additionally or alternatively, the RS tones can be weighted or otherwise classified for performing channel estimation using the RS tones.

Description

[0001] Cross References to Related Applications [0002] This patent application claims that the title of the application filed on April 12, 2011 is "METHOD AND APPARATUS FOR SELECTIVE REFERENCE SIGNAL USE IN PHYSICAL BROADCAST CHANNEL INTERFERENCE CANCELATION" "Provisional Application No. 61 / 474,699" and the October 7, 2011 application titled "METHOD AND APPARATUS FOR SELECTING REFERENCE SIGNAL TONES FOR DECODING A CHANNEL), the content of which is expressly incorporated herein by reference in its entirety. technical field [0003] The following description relates generally to wireless network communications, and more particularly to using reference signals for decoding communications. Background technique [0004] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, data, and so on. A typical wireless communication system may be a multiple-access system capable of supporting communication with multiple use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/02H04W72/08
CPCH04J11/004H04J11/0056H04L25/0202H04W84/045H04L25/00H04L27/2601H04L5/0053H03G1/02H04W24/02
Inventor 卡皮尔·巴塔德刘柯涛·骆魏永彬
Owner QUALCOMM INC
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