Stream switching-based group switching method in heterogeneous wireless network

A heterogeneous wireless network and group switching technology, applied in network traffic/resource management, wireless communication, electrical components, etc., can solve problems such as wireless interface type and number limitations

Inactive Publication Date: 2011-06-22
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, if multiple service flows are carried by the same terminal, they may be limited by the type and number of wireless interfaces of the terminal when selecting a network

Method used

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  • Stream switching-based group switching method in heterogeneous wireless network
  • Stream switching-based group switching method in heterogeneous wireless network
  • Stream switching-based group switching method in heterogeneous wireless network

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Embodiment Construction

[0068] The present invention is applicable to group mobility scenarios in wireless heterogeneous networks, such as figure 1 shown. In this embodiment, the whole service area of ​​the system is covered by WCDMA network, WiMax TM The network is within the coverage of WCDMA network, 3 WiFi TM The network is on WiMax TM within the coverage area, and the WiFi TM There is overlap between the networks. The above access networks are respectively N 1 ,…, N 5 express. The entire system area is divided into 7 different locations according to different network detection sets, the sets are LS ={ L 1 ,…, L 7}. Multiple terminals move in groups, the path is L 1 → L 2 → L 3 → L 4 → L 5 → L 6 → L 7 → L 2 → L 1 .

[0069] figure 2 It is a basic block diagram of the group switching method of the present invention. In this embodiment, the terminal side includes a total of 9 terminals, respectively using T 1 ,…, T 9 express. These terminals all have WC...

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Abstract

The invention relates to a stream switching-based group switching method in a heterogeneous wireless network. The conventional service stream is generally loaded by the same terminal, and the network selection may be limited by the type and the number of wireless interfaces of the terminal. Under a group mobile scene of the wireless heterogeneous network, a centralized joint radio resource management (JRRM) entity acquires information such as available bandwidth of each network, positions of all terminals in a group, access capacity and the like, works out an overall switching judgment, and can effectively support separate network selection of the service stream. The method specifically comprises initiation of group switching, judgment of group switching and execution of group switching. Aiming at the group mobile scene, the centralized JRRM for switching judgment is adopted, so that the ping-pong effect caused by simultaneous switching of multiple terminals is avoided.

Description

technical field [0001] The invention belongs to the field of switching in wireless heterogeneous networks, and relates to a group switching method based on flow switching. Background technique [0002] Driven by new technologies and markets, wireless access technology has made great progress, and the integration of heterogeneous wireless networks has become an inevitable trend in the development of future mobile communication systems. Within a certain geographic area, multiple networks of different types may overlap and complement each other. In order to adapt to this heterogeneous environment, multi-mode smart terminal devices are becoming popular, and they can choose to access / switch to the most suitable network. When these terminals have similar mobility characteristics, a group mobility scenario occurs. For example, a certain user owns multiple terminal devices, forming a PAN, and when the PAN moves, it is a group mobility scenario. Another example is that multiple pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/08H04W36/14
Inventor 陈惠芳谢磊陈雅欣王匡
Owner ZHEJIANG UNIV
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