Method and apparatus for establishing a time-frequency reference signal pattern configuration in a carrier extension or carrier segment

A reference signal mode and reference signal technology, applied in the field of communication, can solve problems such as time drift

Inactive Publication Date: 2014-04-02
BROADCOM CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the reference clock utilizes the sampling rate to generate the timing reference, dependent frequency drift between bands can cause time drift if not corrected

Method used

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  • Method and apparatus for establishing a time-frequency reference signal pattern configuration in a carrier extension or carrier segment
  • Method and apparatus for establishing a time-frequency reference signal pattern configuration in a carrier extension or carrier segment
  • Method and apparatus for establishing a time-frequency reference signal pattern configuration in a carrier extension or carrier segment

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Embodiment Construction

[0032] The present invention now will be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. Indeed, these inventions may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements. Throughout, like numerals refer to like elements.

[0033] As used in this application, the term "circuitry" refers to all of the following: (a) hardware-only circuit implementations (such as implementations in analog-only and / or digital circuits) and (b) circuits and software (and and / or firmware) such as (if applicable): (i) a combination of (multiple) processor(s) or (ii) part / software of (multiple) processor(s) (including digital signal processor(s)) , software, and memory(s, which work together to cause a device, such as a mobile phone or server...

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Abstract

Methods, apparatus and computer program products are provided for establishing a time-frequency reference signal pattern configuration in a carrier extension or a carrier segment, such as for cell-specific reference signals (CRS) and / or demodulation reference signals (DM RS). One method includes receiving information regarding a time-frequency reference signal pattern configuration in a carrier extension or carrier segment. The time-frequency reference signal pattern configuration defines a subframe to include a reference signal based upon a time density parameter and defines a resource element to be utilized within the subframe based upon a frequency density parameter. This method also includes receiving reference signals pursuant to the time-frequency reference signal pattern configuration such that reference signals have a coherence time Tcoh with at least one subframe including a reference signal in the CE or CS per Tcoh and a coherence bandwidth Bcoh with at least one resource element containing a reference signal per Bcoh.

Description

technical field [0001] Embodiments of the present invention relate generally to communication technologies, and more particularly to establishing time-frequency reference signal pattern configurations in carrier extensions or carrier segments. Background technique [0002] Carrier aggregation is the combination of two or more cells or component carriers (CCs) operating on different frequencies in order to provide wider transmission bandwidth to mobile terminals. Component carriers aggregated according to carrier aggregation include one primary cell and one or more secondary cells. While component carriers are backwards compatible with respect to previous releases, such as releases 8, 9 or 10 of the Long Term Evolution (LTE) specification, non-backwards compatible elements, such as carrier segments (CS) and carrier Extensions (CE) have also been proposed. Carrier extensions and / or carrier segments may be useful for various purposes including improvements in spectral efficie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/18
CPCH04L5/0005H04L5/001H04W72/044H04L5/0048H04L25/0224H04W24/10H04L25/0222H04L5/0092H04L5/005
Inventor G·沙比特曾二林汪海明高春艳
Owner BROADCOM CORP
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