Rapid and vertical switching system and method between mobile communication network and wireless local area network

A wireless local area network and mobile communication network technology, applied in the field of fast vertical switching system, can solve the problems of poor service quality of real-time streaming media services, unequal switching two-way delay, difficulty in ensuring uninterrupted sessions, etc., to ensure integrity, Fast switching speed, reducing the effect of media service quality degradation

Inactive Publication Date: 2010-09-15
INST OF ACOUSTICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0013] (1) During the vertical switching process, it is difficult to ensure that the current active session is not interrupted;
[0014] (2) During the vertical switching process, the service quality of the real-time streaming media service will deteriorate;
[0015] (3) In the process of vertical switching, there will be a problem of unequal switching two-way delay;
[0016] (4) In the process of vertical switching, there will be data loss, which will reduce the efficiency of file download

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  • Rapid and vertical switching system and method between mobile communication network and wireless local area network
  • Rapid and vertical switching system and method between mobile communication network and wireless local area network
  • Rapid and vertical switching system and method between mobile communication network and wireless local area network

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Embodiment Construction

[0043] The preferred embodiment of the present invention (handover procedure between GPRS and WLAN) is described below in conjunction with service, should declare: the preferred real-time example described here is only for illustrating and explaining the present invention, should not be regarded as the restriction of the present invention .

[0044] In one embodiment of the present invention, a method and system for fast vertical handover between a mobile communication network and a wireless local area network are provided. Wherein, the fast vertical handover system uses an RGW as a handover core controller, and the RGW is used to detect and trigger a fast vertical handover control process. The fast vertical handover system also includes a mobile dual-mode terminal (MH), a wireless LAN gateway (RGW) and a gateway GPRS support node (E-GGSN). The RGW in this embodiment adds a SIP B2B UA function module and a packet processor function module on the basis of the existing RGW. Sim...

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Abstract

The invention provides rapid and vertical switching system and method between a mobile communication network and a wireless local area network. The method is based on an open IP multimedia subsystem and internet, and takes a wireless gateway as a vertical switching control center. The method has additional dual SIP (Session Initiation Protocol) and UA (User Agent) for a dual-mode mobile terminal and functional support for a packet filter, and has additional SIP B2B UA modules for a wireless gateway (RGW) and gate GPRS nodes and functional support for a packet filter. The method realizes rapid and vertical switching between the mobile communication network and the wireless local area network. The RGW (Residential Gateway) detects a switching accident in the process of switching, establishes a dialogue between the RGW and a GGSN (Gateway), and reduces the number of signal switching during the transmission on a wireless link. Media streams are copied to the switched target network by utilizing the dialogue, the performance of vertical switching is improved, and the service quality of real-time stream media and the transmission efficiency of file downloading in the process of switching are ensured.

Description

technical field [0001] The invention belongs to the technical field of network communication, and in particular relates to a fast vertical switching system and method between a mobile communication network and a wireless local area network. technical background [0002] Overlapping mobile communication networks (such as UMTS / 3G) and wireless local area networks (such as wifi, etc.) will provide the main network access methods in the future. Mobile communication networks provide large-scale, medium-low rate network coverage, and wireless local area networks provide small-scale, High-speed network coverage. Combining the two to provide ubiquitous network access has become a trend. Mobility is one of the important research contents. [0003] From the perspective of mobility management, mobility can be divided into four types: [0004] Vertical macro mobility: users use different wireless access technologies to move between different management domains; [0005] Horizontal m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/14
Inventor 张武王劲林
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI
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