Method, device and system for acquiring position information

Abstract

The embodiment of the invention relates to a method, a device and a system for acquiring position information, wherein the method comprises the following steps of: receiving anchored trigger information, and acquiring and recording the position information of a first called number carried by the anchored trigger information; and sending the position information of the first called number to MGCF network element equipment so that the MGCF network element equipment sends the position information to calling session control function (CSCF) network element equipment and / or a service application server. In the invention, anchoring AS can send the position information of called UE to the MGCF network element equipment in an IMS domain in the anchoring process so that the MGCF network element equipment can send the position information of the called UE to other network element equipment in the IMS domain for service processing.

Description

technical field [0001] The embodiments of the present invention relate to the field of communication, and in particular, to a method, device and system for acquiring location information. Background technique [0002] With the continuous evolution of the communication network, the mobile core network also develops continuously. Among them, the IP Multi-media Sub-system (IP Multi-media Sub-system, hereinafter referred to as: IMS) of the core network is one of the main development directions. However, since a circuit switching system (Circuit switch Sub-system, hereinafter referred to as CS) is currently very mature and has accumulated a large number of users, the traditional CS will coexist with the IMS for a long period of time. [0003] In order to enable users in the CS domain to enjoy IMS services, the prior art generally uses an anchoring technology to redirect calls from the CS domain to the IMS domain, thereby completing service logic in the IMS domain. After the cal...

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Problems solved by technology

[0004] In the process of implementing the present invention, the inventors found that there are at least the following problems in the prior art: the network elements in the IMS domain cannot obtain the location information of the called UE, so that the network elements in the IMS domain cannot perform calls based on the location information of the called UE. Charging or launching location services

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