Domain switching method, server and control device

Abstract

The invention discloses a domain switching method, a server and a control device. The domain switching method comprises that: a call session control device receives a call request initiated by the terminal which uses a session transfer identifier as a called address and routes the call request to a server, wherein the session transfer identifier is pre-allocated by the server and used for identifying the session and the domain switching of the session; and the server acquires the call request according to the session transfer identifier I the call request and uses the call request to perform the domain switching of the session correspondingly. In the embodiment of the invention, according to the dynamically allocated STID, the domain switching of the session is performed, the domain switching correctness and effectiveness can be ensured effectively, the diversified development of a network service is promoted, network resources are saved, and domain switching efficiency is improved.

Description

technical field [0001] The invention relates to mobile communication technology, in particular to a domain switching method, server and control device. Background technique [0002] The core network of the Universal Mobile Telecommunications System (hereinafter referred to as: UMTS) is a combination of the Global System for Mobile Communications (hereinafter referred to as: GSM) and the General Packet Radio Service (hereinafter referred to as: GPRS). ) developed on the basis of the Internet Protocol (Internet Protocol, hereinafter referred to as: IP) backbone network. It can be logically divided into a circuit-switched (Circuit-Switched, hereinafter referred to as: CS) domain and a packet-switched (Packet-Switched, hereinafter referred to as: 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 m...

AI Technical Summary

Problems solved by technology

[0023] 1. Since the VDN and VDI are pre-statically configured in the user identification device, each user identification device stores and only stores a set of VDN and VDI. When the terminal performs domain switching, this VDN or VDI is used as the called number Initiate a call request to the VCC AS, so that when the terminal has sessions with multiple other terminals at the same time, the VCC AS cannot know which session the terminal needs to perform domain switching through the VDN or VDI, so that the correctness and effectiveness of the domain switching cannot be guaranteed In addition, because there is only one set of VDN / VDI, it cannot meet the needs 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 VCCAS needs to dynamically allocate the IMRN for this domain handover in advance, which takes a certain amount of time and reduces the efficiency of the domain handover; The 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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