Title :
RTT Positioning in WCDMA
Author :
Wigren, Torbjörn ; Wennervirta, Jenni
Author_Institution :
WCDMA Syst. Manage., Ericsson AB, Stockholm, Sweden
Abstract :
The paper presents the details of a round trip time (RTT) positioning algorithm that provides a largely improved accuracy as compared to cell ID positioning - yet with an availability above 95% and a typical response time below 0.3 s. The algorithm fuses an RTT measurement with configured or computed cell polygon data, in order to determine an arc with left and right angles, and with the distance from the serving radio base station (RBS) determined by the RTT measurement. Reasons are given why this is an almost as accurate and a more cost efficient method, as compared to multi-leg RTT positioning. An overview of the obtained field performance is also provided.
Keywords :
cellular radio; code division multiple access; radio direction-finding; RTT positioning algorithm; WCDMA; computed cell polygon; radio base station; round trip time positioning algorithm; wideband code division multiple access; Base stations; Costs; Delay; Global Positioning System; Multiaccess communication; Position measurement; Radio network; Time measurement; Velocity measurement; Wireless communication; WCDMA; localization; navigation; polygon; positioning; round trip time;
Conference_Titel :
Wireless and Mobile Communications, 2009. ICWMC '09. Fifth International Conference on
Conference_Location :
Cannes, La Bocca
Print_ISBN :
978-1-4244-4679-7
Electronic_ISBN :
978-0-7695-3750-4
DOI :
10.1109/ICWMC.2009.57
