System and method for providing poisition information of mobile terminal using cellular broadcasting technology

• US 20050208953A1
• Filed: 05/24/2004
• Published: 09/22/2005
• Est. Priority Date: 03/16/2004
• Status: Abandoned Application

• Current Assignee: MSP Technology, Inc. (Amalgamated Explorations, Inc.)
• Original Assignee: MSP Technology, Inc. (Amalgamated Explorations, Inc.)
• Inventors: Lee, Hong Woo
• Application Number:
  US10/851,078
• Publication Number:
  US 20050208953A1
• Time in Patent Office: Days
• US Class Current: 455/456.100
• CPC Class Codes: H04B 7/18554 using the position provided by an existing geolocalisation system

Abstract

There are provided a system and a method for providing position information of a mobile terminal using cellular broadcasting technology. The ephemeris and almanac information of the GPS satellite required for calculating the position of the mobile terminal are broadcasted by the CBS through the BTS to which the mobile terminal is pertinent, so that the call processing procedure between the mobile terminal and the PDE which is usually carried out to obtain the position information of the GPS satellite may be omitted. In the case that the position of the mobile terminal is changed in real time by a vehicle or the like, it can provide very precisely the position information of the mobile terminal since the time consumed for the mobile terminal to define the traffic channel for obtaining the position information of the GPS satellite is reduced. In addition, in the system of the present invention, since the call processing procedure is simplified, a load applied to the PDE is reduced, so that it can suppress the additional installation of the PDE which is an expensive device relative to other components.

Claims

1. A system for providing position information of a mobile terminal using cellular broadcasting technology, the system comprising:

a mobile communication network including a plurality of base station transceiver subsystems each installed in one cell in a desired service area divided in a unit of cell and transmitting a signal for defining call setting with the mobile terminal in a pertinent cell, a base station controller installed in the unit of at least one base station transceiver subsystem for controlling a function of the pertinent base station transceiver subsystem, and a PCS central exchange installed in the unit of at least one base station controller, and defining and maintaining the traffic channel;

a cellular broadcasting system for broadcasting position information of a GPS satellite via the mobile communication network in the unit of cell, the broadcasting being serviced by each base station transceiver subsystem of the mobile communication network;

a mobile positioning center for transmitting a signal required to trace the position of the mobile terminal and transmitting the position information of the GPS satellite to the cellular broadcasting system; and

a position determination entity for classifying the position information consisting of ephemeris and almanac information received from the GPS satellite in the unit of cell serviced by each base station transceiver subsystem of the mobile communication network to provide the mobile positioning center with the position information.

2. The system as claimed in claim 1, wherein the position determination entity is connected to an earth station for satellite communication to receive the position information consisting of the ephemeris and almanac information of each GPS satellite from the earth station.

3. The system as claimed in claim 1, wherein the position determination entity is connected to an application service provider to provide the mobile terminal with supplementary application services related to the position trace.

4. The system as claimed in claim 1, wherein the information related to the GPS satellite usable in each cell of the mobile communication network is predetermined in the position determination entity, and the position determination entity classifies the position information of the GPS satellite in the unit of cell by using the predetermined information.

5. The system as claimed in claim 1, wherein the mobile terminal receives the position information of the GPS satellite to be effectively utilized in the location of interest from the base station transceiver subsystem servicing the cell in which the terminal is placed, and the mobile terminal conducts a search for the GPS satellite using the received position information of the GPS satellite, and calculates its own location using pseudorange data between the searched GPS satellite and the mobile terminal.