Media-free switching device and its state migration method
A media-independent handover and device state technology, applied in wireless communication, radio/inductive link selection arrangement, electrical components, etc., can solve the problems of handover failure, high possibility of message error, MIHF cross-system handover failure, etc., to achieve The effect of reducing correlation
Inactive Publication Date: 2007-08-01
HUAWEI TECH CO LTD
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Problems solved by technology
[0016] The existing IEEE802.21 specification defines the MIHF structure and handover related messages, but lacks the definition of MIHF status
[0017] In practical application, the above scheme has the following problems: the possibility of MIHF cross-system handover failure is high
[0018] The main reason for this situation is that during the MIHF cross-system handover process, there is a high possibility of various messages being wrong, and the MIHF that does not distinguish the handover status cannot effectively identify abnormal messages, resulting in a high possibility of handover failure.
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[0056] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0057] According to the MIHF, the present invention handles the switching between multiple heterogeneous networks, decomposes the MIHF into multiple sub-functions, and the states of each sub-function may be different. Each sub-function independently determines its own state transition, and performs message interaction and processing with the corresponding SAP of the access network according to the different states. In addition, when performing MIH handover, instances in sub-functional units switch between different handover states, so as to correctly process various received messages according to different handover states, and reduce the possibility of cross-system handover failure.
[0058] The MIHF equipment structure of the first embodiment of the present inven...
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The related method decomposes MIHF into multiple sub-functions and one management unit, wherein the sub-function unit can independent transfer among unactivated state, free state and connection state according to the authentication register and connection conditions of corresponding access network, and processes the received message based on condition. While taking MIH switch, the entity in sub-function unit can transfer among switch preparation, execution, completion and selectable switch free condition, then processes the received data individually. This invention can process different message during cross-system switch, and handles the abnormal message.
Description
technical field [0001] The invention relates to mobile communication technology, in particular to a media-independent switching function device and a state transition method thereof. Background technique [0002] In recent years, communication technology, especially mobile communication technology has developed rapidly. With the successive introduction of the first to third generation mobile communication (The Third Generation, "3G") systems, the impact of mobile communication on human life and work is increasing day by day. With the increase of users, in order to truly meet the needs of the market and users, the evolution and gradual integration of fixed network and mobile network, the softswitch system must have the characteristics of mobile, multimedia and multiple access under the open architecture. [0003] Access diversification includes two aspects: access medium, access user protocol and type. From the perspective of access media, in addition to the traditional cop...
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Login to View More IPC IPC(8): H04Q7/38H04W24/00H04W36/14
Inventor 庄宏成姜炳强
Owner HUAWEI TECH CO LTD