Accurately positioning method for personal hand-held telephone system user

Abstract

The method for accurate positioning users in PHS system includes steps: network management through access gateway sends request for positioning user to base station controller under call region where the user current belongs to; the controller sends seeking positioning request to own base stations; base stations seek the user; the user sends request for building link to a base station; the base station reports associated position information and signal intensity of the user to network supervisor, and sends message of refusing building link to the user; the user determines whether number of refusing the said request reaches to threshold; if yes, based on information received from multiple base stations, the network supervisor calculates out user's position; otherwise, seeking other base stations to carry out steps of request for building link again. The invention realizes positioning users in PHS system in low cost and high precision.

Description

technical field [0001] The invention relates to a positioning method in a mobile communication system, in particular to a positioning method for a PHS (Personal Handyphone System, Personal Handyphone System) user. Background technique [0002] At present, the total number of wireless local phone users in China has exceeded 30 million and will continue to grow. In order to improve the communication level and quality of life of the majority of users, in addition to providing the basic services of voice calls, the provision of value-added services, such as short messages, videophones, and data services, is becoming increasingly important. Among them, a large class of new services (telecom value-added services) are related to determining the current location of the user, for example; family monitoring service: when the elderly or children go out, the parents can regularly receive the other party's current location information sent by the wireless local telephone system; When yo...

AI Technical Summary

Problems solved by technology

[0003] There are currently two user positioning methods: one is to use GPS (Global Position System) positioning, which can accurately locate the position of mobile users, but it requires communication satellites and special GPS terminals, which is expensive and not suitable for ordinary users ;

[0004] The other is the single base station positioning method of the PHS system. Please refer to the Chinese patent application number 02137333 published on March 31, 2004 for a positioning method for PHS system users. The method uses the base station where the PHS user mobile phone is located For an analog call, the system locates the user according to the base station occupied by the user. The positioning accuracy is the coverage of a single base station, which is about 500 meters. However, this method has low positioning accuracy and cannot meet the needs of high-precision positioning for users.

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