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femtocell synchronization

A technology of femtocell base stations and attributes, applied in the field of femtocell base stations, and can solve problems such as timing uncertainty

Inactive Publication Date: 2017-03-01
INTEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The multiplex delay spread can be around 0.5µs and causes timing uncertainty

Method used

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Examples

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Embodiment Construction

[0031] Although the invention will be described below with respect to an LTE communication network and a femtocell base station or HeNB, it will be understood that the invention is applicable to any type of second, third or later generation network in which a femtocell base station (whether residential, commercial or or public use), or equivalents in these networks, such as TD-SCDMA, WiMAX, and WCDMA / HSPA, and where femtocells are required to be time-synchronized with macrocells. Furthermore, although in the following embodiments femtocell and macrocell base stations use the same air interface (LTE), it will be understood that the present invention can be used in situations where macrocell and femtocell base stations use different air interface schemes ( For example, macro cell base stations can use TD-SCDMA or WCDMA, while femtocell base stations use LTE).

[0032] figure 2 A partially exemplary communication network 22 is shown in which the present invention may be impleme...

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Abstract

A method, in a femto-cell base station, of refining a timing estimate used to synchronise said femto-cell (pico-cell, HeNBs, EeNBs) base station (28, figure 2) to a macro-cell (NodeBs, eNodeBs) base station (24, figure 2), comprising: estimating a multipath power delay profile from signals received from the macrocell base station, 103, detecting the earliest path in the multipath power delay profile, 105, and determining a correction to the timing estimate from the earliest path detected in the multipath power delay profile, 107. The determined timing estimate correction is applied, 109, to a timing estimate obtained during initial synchronization of the femtocell base station to the macrocell base sation, 101.

Description

technical field [0001] The present invention relates to femtocell-to-macrocell synchronization, and more particularly to a method of reducing the effect of multipath delay spread when femtocell-to-macrocell synchronization, and a femtocell configured to perform the method. Background technique [0002] Femtocell base stations (otherwise known as Home Evolved Node Base Stations Bs-HeNBs or Enterprise Evolved Node Base Stations Bs-EeNBs) in Long Term Evolution (LTE) communication networks are small, low power, for residential or commercial use Indoor cellular base station. They provide better network coverage and capacity than base stations available in environments covered by macrocellular LTE networks. A femtocell base station uses a broadband connection to receive data from and send data back to the operator's network (known as "backhaul"). [0003] A base station (whether femtocell, picocell, macrocell, etc.) in an LTE communication network can support Frequency Division...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26H04W56/00
CPCH04W56/001H04W84/045
Inventor 尼古拉斯·威廉·温尼特
Owner INTEL CORP