Positioning system, positioning server, base station and terminal position estimating method

A positioning server and positioning system technology, applied in the field of mobile terminal location in radio communication systems, can solve the problems of coarser terminal location resolution estimation, time-consuming, terminal movement, etc.

Inactive Publication Date: 2003-04-16
NEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But there is a problem here. In the case of a small number of base stations, the estimation of the terminal position resolution becomes rough
[0013] In addition, since the terminal measures electric field strength received from multiple base stations, in the case where the terminal has only one device for measuring electric field strength, there is a possibility that the measurement takes time and the terminal may move during the measurement
Although the measurement time can be shortened when the terminal has multiple measurement devices, terminals with multiple measurement devices may encounter problems in terms of size, cost and terminal power consumption

Method used

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  • Positioning system, positioning server, base station and terminal position estimating method
  • Positioning system, positioning server, base station and terminal position estimating method
  • Positioning system, positioning server, base station and terminal position estimating method

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Embodiment Construction

[0047] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. figure 1 A structural block diagram of a positioning system according to an embodiment of the present invention is shown. exist figure 1 , reference symbol A denotes a service area, reference numeral 1 denotes a positioning system, 2 denotes a content server, 3-1 to 3-3 denotes a base station, 4 denotes a mobile terminal and 100 denotes the Internet.

[0048] The positioning system 1, the content server 2 and the base stations 3-1 to 3-3 are respectively connected to the Internet and can communicate with each other. The mobile terminal can acquire the information accumulated in the content server through the base stations 3-1 to 3-3.

[0049] The service area A is a range in which the base stations 3-1 to 3-3 can perform radio communication. Terminal 4 can only communicate within service area A. That is, in the service area A, the base stations 3-1 to 3-3 provide ...

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Abstract

There is provided a terminal location estimation method capable of accurately estimating a location of a mobile terminal when providing information services according to the location of the terminal in a radio communication system. A positioning server sends a location measurement probe message to the mobile terminal in order to measure the location of the terminal. Each of base stations receives a response message broadcasted from the terminal, measures the reception level and delay spread and sends the measurement results to the positioning server. The positioning server has a radio wave propagation estimating portion and a database for storing estimation results thereof. The server estimates the location of the terminal by checking the measurement results of the base stations against the estimation results on radio wave propagation stored in the database.

Description

technical field [0001] The present invention relates to a positioning system, a positioning server, a base station and a method for estimating a position of a terminal, in particular to a method for easily and accurately detecting the position of a mobile terminal using a radio communication system. Background technique [0002] In recent years, portable telephones have provided services consistent with the user's location using radio communication systems, and these services are generally called location information services. [0003] The following will use Figure 9 and 10 , which describes an example of a location service. Figure 9 is a block diagram of an example of a positioning system structure in the past. exist Figure 9 Among them, reference number 21 represents a positioning server, 200 represents the Internet, 22 represents a content server, 23-1 to 23-3 represent base stations, C-1 to C-3 represent cells covered by base stations 23-1 to 23-3, and 24 represent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/06H04W64/00
CPCG01S5/0252G01S5/0036H04W64/00G01S5/02521
Inventor 冈上和广古川浩山崎俊太郎
Owner NEC CORP
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