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Method for switching between heterogeneous networks

A heterogeneous network and terminal switching technology, which is applied in the field of heterogeneous networks, can solve problems such as incomplete switching technical solutions, and achieve the effects of perfect processing, improved switching efficiency, and improved versatility

Inactive Publication Date: 2006-12-20
HUAWEI TECH CO LTD
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  • Abstract
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Problems solved by technology

[0012] The purpose of the present invention is to provide a method for handover between heterogeneous networks to solve the problem that the handover cannot be initiated by the terminal side in the prior art and the problem that the existing technical solution initiated by the network side is not perfect

Method used

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  • Method for switching between heterogeneous networks

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Embodiment Construction

[0060] The present invention will be described in detail below in conjunction with specific embodiments and accompanying drawings.

[0061] The entire 802.21 handover process can be divided into two situations: initiated by the terminal side and initiated by the network side. The following first describes the handover process initiated by the terminal, as shown in the attached image 3 And attached Figure 4 As shown (here the handover from 802.11 to 3GPP is taken as an example to illustrate the handover process):

[0062] Step 1: STA / UE (station / user equipment) associates with the current PoA (point of access, 802.11 interface here), and establishes a session with it through HA (home agent for mobile IP).

[0063] Step 2. When the wireless environment of the original connection becomes unacceptable, such as signal attenuation, etc., the network interface (here, the 802.11 interface) of the original connection on the STA / UE will send Link_Going_Down (the link will be broken) ...

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Abstract

The invention relates to a method for switching between different networks, which comprises: a, the media gateway switch MIH user layer at the terminal selects the switch candidate access point PoA; b, the MIH user layer at the terminal sends the media irrelevant switch request to switch the terminal into said switch candidate PoA. The invention provides a method and a process that using terminal and network to initialize different network switch, based on 802.21-structure, to increase the initialized switch process of user terminal and improve the treatment of switch process.

Description

technical field [0001] The present invention relates to the technical field of heterogeneous networks, in particular, to the technology of handover between heterogeneous networks. Background technique [0002] There are currently many networks with different architectures, such as the wireless local area network defined by 802.11, the wireless metropolitan area network defined by the 802.16 protocol, and the third-generation cellular mobile communication network defined by 3GPP (Third Generation Mobile Communication Standardization Partnership Project). It is difficult to conveniently switch and roam in heterogeneous networks under the condition of ensuring business continuity. The proposal of 802.21 is to solve the above problems. The 802.21 (Media-Independent Handover Service) protocol defined by IEEE (Institute of Electronics and Electrical Engineers) is a protocol that provides link layer information and other related network information in a heterogeneous network. To t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/28H04L29/06H04W36/00H04W36/14H04W36/36
CPCH04W36/0011H04W36/36H04W36/14H04W36/144
Inventor 钟辉汪曙刘源
Owner HUAWEI TECH CO LTD
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