Emergency positioning method based on IP, server and system thereof

Abstract

The present invention relates to an emergency location method, server and system based on Internet Protocol (IP), wherein the method includes: a location server receives an emergency call Session Initiation Protocol (SIP) request message from a Voice over IP (VoIP) terminal which is forwarded via a core network (S101); according to the SIP request message and via the core network, a call connection between the VoIP terminal and an emergency service centre is established (S102). According to an emergency location request message transmitted from the emergency service centre, the location server of the present invention can also obtain the location information of the VoIP terminal with higher precision by associating with the available assistant data of the VoIP terminal, and feed back the location information of the VoIP terminal to the emergency service centre so as to provide effective location service for the VoIP terminal, thus solving the problems in the prior art that a location server cannot effectively obtain the actual location address of a terminal according to the address of a network address translation device on an interface, and cannot obtain the valid location information of a terminal simply according to the global non-unique intranet address of the terminal.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to an IP-based emergency positioning method, server and system. Background technique [0002] As one of the characteristic services of the mobile communication system, positioning service has always been considered as a bright spot of future mobile value-added services; positioning service is the most attractive service in mobile value-added services, and it is also one of the most complex services in all links of the industry chain . [0003] At present, the main work of OMA LOC (Open Mobile Architecture Location, Open Mobile Alliance working group) is to formulate the positioning technology based on the user plane in the mobile communication network, and to transfer the relevant positioning parameters in the control plane positioning technology in the past mobile communication network to the IP channel. The transmission in the network, and then realize the positionin...

AI Technical Summary

Problems solved by technology

Therefore, in the above scenario, the positioning server either obtains the address of a network address translation gateway device from the interface, and obtains the location information of the network address translation device instead of the location information of the user terminal according to this address translation; or obtains the location information of the network address translation device from the SUPL In the message, the global non-unique intranet address of the terminal is obtained, and the location information of the terminal cannot be converted based on this address

[0007] Therefore, the existing SUPL technical solutions and related interface specifications cannot guarantee that the IP address is converted into effective location information of the terminal when the terminal uses a fixed IP network to access and initiates a VoIP emergency call, and it cannot be based on this Provide effective positioning services for terminals

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