Title :
Highly accurate PHS location service system
Author :
Oono, Tomoyoshi ; Yamamoto, Ryoji ; Matsuki, Hideo ; Matsutani, Hideyuki ; Ohtsuka, Hiroyuki ; Onoe, Seim
Author_Institution :
Radio Network Dev. Dept., NTT DoCoMo Inc., Kanagawa, Japan
Abstract :
This paper overviews our highly accurate location service (LCS) system for the Personal Handy Phone System (PHS) infrastructure. It is an enhanced version of the PHS location service that commenced service in May 1998. The system concept, system configuration, and position estimation algorithm are described. Field test results are also presented. We show that the proposed position estimation algorithm reduces the position estimation error by about 50% compared to the conventional cell-ID-based algorithm. NTT DoCoMo Inc. started the enhanced PHS LCS in February 2001
Keywords :
microcellular radio; personal communication networks; position measurement; radio tracking; PHS location service system; Personal Handy Phone System; field test results; position estimate algorithm; system concept; system configuration; Antenna measurements; Costs; Disaster management; Electronic mail; Estimation error; FCC; Global Positioning System; Intelligent transportation systems; Radio network; Testing;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2001 12th IEEE International Symposium on
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-7244-1
DOI :
10.1109/PIMRC.2001.965261
