Enhanced timing advance in TDM cellular radio systems
Whitlock, RSC and Brown, TWC (2011) Enhanced timing advance in TDM cellular radio systems ELECTRON LETT, 47 (14). 829 - 830. ISSN 0013-5194
Available under License : See the attached licence file.
The rationale for this Letter is to present a method which would enhance the resolution and accuracy of timing advance (TA) in 2G GSM TDMA and 3G UMTS TDD networks. The method would enable a stationary or slow-moving mobile station (MS) to determine its location using trilateration, with enhanced resolution and accuracy. An outstanding feature of the method is that the only changes required are to software. Low resolution TA samples would be processed into enhanced resolution measurements by applying fractional bit perturbations (dither) over an extended sampled measurement period. The existing TA mechanism and word length for ensuring correct MS uplink arrival times would remain unchanged. It is proposed that enhanced timing advance (ETA) could provide a low risk, low cost alternative to location finding technologies such as angle of arrival, time of arrival, enhanced observed time difference, uplink time difference of arrival and GPS, at the same time satisfying the FCC mobile E-911 accuracy requirement.
|Additional Information:||This paper is a postprint of a paper submitted to and accepted for publication in Electronics Letters and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at IET Digital Library.|
|Divisions:||Faculty of Engineering and Physical Sciences > Electronic Engineering > Centre for Communication Systems Research|
|Depositing User:||Symplectic Elements|
|Date Deposited:||01 May 2012 12:21|
|Last Modified:||23 Sep 2013 19:22|
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