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Method and apparatus for mobile station location estimation

A mobile station and estimation unit technology, applied in the direction of location information-based services, measurement devices, selection devices, etc., can solve the problems of expensive technology

Inactive Publication Date: 2004-09-08
美国电报电话无线通讯公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A disadvantage of this system is that each cell site requires connected components that will generate and send appropriate signal strength report messages to the mobile telecommunications switching department
however, the need for such a vehicle would make such a technology very expensive

Method used

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  • Method and apparatus for mobile station location estimation
  • Method and apparatus for mobile station location estimation
  • Method and apparatus for mobile station location estimation

Examples

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Embodiment Construction

[0042] figure 1 A geographic service area 100 for a mobile telephone system is shown. The illustrated service area 100 has seven hexagonal cells, numbered 1-7, respectively. Cell 7 is shown in the center, surrounded by adjacent cells 1-6. Typically, the service area 100 of a mobile telephone system may include more than seven cells, but for ease of reference, in figure 1 Only 7 cells are shown in . Each of the cells 1-7 includes a respective antenna 101-107 for transmitting and receiving signals to / from a mobile telephone, such as mobile telephone 120 within the service area 100 of the mobile telephone system.

[0043] A mobile telephone system 200 is shown in FIG. 2 . The illustrated cell 7 comprises an antenna 107 connected to a radio base station (RBS) 214 . The mobile telephone 120 shown in the cell 7 communicates with the mobile telephone system 200 via the air interface 202 . For example, mobile telephone 120 may be a digital mobile telephone operating according to...

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Abstract

Methods and apparatus for estimating mobile station location include receiving reported signal strengths or other attachment indicator values from a mobile station. The reported signal strengths are compared with characteristic received signal strength values in a coverage area of a mobile network. A mobile switching center determines if a local function is requested and initiates a location estimation process by a mobile location module (MLM). The MLM receives the reported signal strength contours associated with the attachment points. Based on a comparison of the reported attachment indicator values with characteristic values, the MLM provides a mobile location estimate.

Description

[0001] This application claims the benefit of priority to US Provisional Patent Application 60 / 281,147, filed April 3,2001. technical field [0002] The present invention relates to methods and apparatus for determining the location of a mobile station in a wireless network. Background technique [0003] Mobile telephone systems, also known as cellular telephone systems, are becoming increasingly popular. These systems typically consist of cell sites that are configured to serve associated coverage areas, referred to as cells. A cell site is located within a cell where communication hardware such as antennas and wireless base stations are installed. A mobile station operating within a particular cell in the system communicates with the mobile telephone system through an associated cell site. The cell sites communicate with a mobile switching center, which connects the mobile telephone system to the landline telephone network. [0004] One reason for the popularity of cell...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/06G01S5/02H04W4/90H04W64/00
CPCH04W64/00H04W64/003G01S5/0252H04W4/90H04W4/026H04B17/318H04L43/16H04W88/14
Inventor 艾伦·D·麦克唐纳马克·W·萨瑟约翰·斯纳普
Owner 美国电报电话无线通讯公司
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