Method for switching domain and server

Abstract

The invention discloses a domain switch method, a server and a control device; wherein, the domain switch method comprises: a call session control device receiving terminal makes a call request by taking a session hand-off identifier as a called address and routes the call request to a server; the session transfer identifier, pre-assigned by the server, is used for identifying the session and thedomain switch of the session. Based on the session transfer identifier in the call request, the server acquires the call request and carries out corresponding domain switch to the session. By carrying out domain switch to the session based on dynamically assigned STID, the embodiment of the invention can effectively ensure the correctness and effectiveness of domain switch, promote the diversified development of network business, save network resources and improve domain switch efficiency.

Description

technical field [0001] The invention relates to mobile communication technology, in particular to a domain switching method and its server. Background technique [0002] The Universal Mobile Telecommunications System (UMTS) core network is a full Internet Protocol (Internet Protocol) developed on the basis of the Global System for Mobile Communications (GSM) and the General Packet Radio Service (GPRS). IP) backbone network. It can be logically divided into a circuit-switched (Circuit-Switched, CS) domain and a packet-switched (Packet-Switched, PS) domain. The CS domain is the circuit switching core network of UMTS, which is used to support circuit data services; the PS domain is the packet service core network of UMTS, which is used to support packet data services and some multimedia services. In UMTS, signaling control and data transmission are separated. [0003] Currently, the mobile communication network is dominated by CS, including GSM, Code Division Multiple Acces...

AI Technical Summary

Problems solved by technology

[0023]1, since the VDN and VDI are statically configured in the user identification device in advance, each user identification device stores and only stores a set of VDN and VDI, and each time the terminal When domain switching is performed, the VDN or VDI is used as the called number to initiate a call request to the VCC AS. In this way, when the terminal has sessions with multiple other terminals at the same time, the VCC AS cannot know which terminal the terminal needs to call through the VDN or VDI. Domain switching is performed for sessions, so the correctness and effectiveness of domain switching cannot be guaranteed; moreover, since there is only one set of VDN / VDI, it cannot meet the requirements of the terminal to communicate with multiple other terminals at the same time, which limits the diversified development of network services;

[0024]2, the functions of VDN and VDI are both used to indicate that the new call request is a domain transfer call request, and their functions are the same, because the traditional terminal initiates in the CS domain The call request can only carry numbers, not characters. Therefore, VDN and VDI are used to indicate that the new call request is a domain transfer call request. However, for ICS terminals, ICCC can carry characters to send indication information to the ICCF device. Therefore, the functions of VDN and VDI can be fully concentrated on the same identification, and there is redundancy in the simultaneous allocation of VDN and VDI, which wastes limited VDN and VDI resources;

[0025]3. During the handover process from the IMS domain to the CS domain, since the VDN does not have the routing function, the VCC AS needs to dynamically allocate the IMRN for this domain handover, which requires the occupation of For a certain period of time, the efficiency of domain switching is reduced; and, in this way, the switching request needs to have both VDN and IMRN numbers, which also wastes number resources;

[0026]4, each user's user identification device is statically configured with a set of VDN / VDI, but not every user needs to perform domain switching at any time, so , the static configuration of VDN / VDI not only unnecessarily occupies the storage space of the user identification device, but also wastes the number resources of the network

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