A LBS System for Cellular Phones

This article describes a development CDMA LBS in order to apply to Test Bed for Control System of Underground Infrastructure Fire Accident, a part of project that "An Intelligent Convergence System of Urban Information for Smart(Ubiquitous) Cities". Our goal guides taking shelter of the sufferer it will not be able to use a GPS when the fire occurs in the subway station. So we are going to research recently indoor LBS System, and method of Location measurement. There are Location measurement methods which measures the AOA(Angle of Arrival) of the signal which it sends with the MS(Mobile Station) form the BS(Base Station), an electronic delivery time (TOA:Time of Arrival) and the relative difference of electronic arrival time from Base Stations(TDOA:Time Difference of Arrival). This time the error due to a multiplex course error and near-far problem and NLOS(Non Line of Sight). We are planning to build the Test Bed for a LBS System on CDMA Network, and construct the Test Bed which is an error below 1 meter.