RTT Positioning in WCDMA

Author

Wigren, Torbjörn ; Wennervirta, Jenni

Author_Institution

WCDMA Syst. Manage., Ericsson AB, Stockholm, Sweden

fYear

2009

Firstpage

303

Lastpage

308

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICWMC.2009.57

Filename

5279619