Handover method among packet switching domain systems, device and system

Abstract

The embodiment of the invention relates to a handover method among packet switching domain systems, a device and a system. The method comprises: a BSS receives a handover request message through a first interface between the BSS and an SRNS, and the handover request message contains identification information of MS and relevant information of RAB; according to the identification information of the MS and the relevant information of the RAB, the BSS sets up a first communication link between the BSS and the SRNS and a second communication link between the BSS and the MS for the handover. In the embodiment of the invention, the BSS receives the handover request message which is sent by the SRNS and contains the identification information of the MS and the relevant information of the RAB through the first interface, and sets up the first communication link between the BSS and the SRNS and the second communication link between the BSS and the MS for the handover according to the identification information of the MS and the relevant information of the RAB. Compared with the technical proposal in the prior art, the interaction with a core network in the process of handover among the packet switching domain systems can be reduced, thus reducing signaling load of the core network and shortening time delay of the core network.

Description

technical field [0001] Embodiments of the present invention relate to the field of mobile communication technologies, and in particular, to a method, device, and system for switching between systems in a packet (Packet Switching, PS) domain for short. Background technique [0002] The third generation digital communication (3rd Generation, 3G for short) network mainly includes two parts: an access network and a core network. Wideband Code Division Multiple Access (WCDMA) is a type of 3G, and its access network is the Universal Mobile Telecommunication System (UMTS) terrestrial wireless access network (Universal Mobile Telecommunication System Territorial Radio). Access Network, referred to as UTRAN). The access network of the 2.5G communication system includes but is not limited to: General Packet Radio Service (General Packet Radio Service, GPRS for short) / Enhanced Data rate for GSM Evolution (EDGE for short) wireless access network (GSM EDGE Radio Access Network, GERAN f...

AI Technical Summary

Problems solved by technology

[0005] It is understandable that the foregoing description only takes the inter-PS domain system handover from UMTS to GPRS as an example, but there are similar problems in other PS domain inter-system handovers from 3G to 2.5G systems

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