Switching method and system based on media-independent switching technology

Abstract

The invention discloses a method and system based on media irrelevant shifting technology. The key to the invention is that during the shifting process, the operation to prevent data loss is changed from being implemented after the shifting to being implemented immediately after receiving the response to shifting submission, thus enhancing the efficiency in data forwarding and shifting, and reducing the time delay in shifting. Furthermore, the shifting process irrelevant to existing media is improved; since part of the existing media access technology doesn't support the transmission of shifting completion message between the mobile nodes and target network nodes, the step is set to be optional instead of being mandatory, while the transmission of shifting completion message between the target network nodes and original service network nodes is a mandatory step. Thus, the existing media access technology can entirely support the media irrelevant shifting process while minimizing the technical change.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a switching method and system based on media-independent switching technology. Background technique [0002] At present, in order to solve the roaming handover problem of mobile users between IEEE 802.3 / 802.11 / 802.16 / 3GPP / 3GPP2 systems, the IEEE 802.21 working group has been established, which is responsible for formulating a common handover framework for wired and wireless IEEE 802 standards (such as IEEE 802.3 / 11 / 16) and 3G standards, standardize the requirements for switching between different standards and the corresponding switching mechanism. [0003] The purpose of the 802.21 (Media-Independent Handover) standard development is to provide the handover process between different types of media, and to enhance the user's experience with mobile devices by supporting handover between different types of media. The goal is to eventually enable mobile devices to roam betwee...

AI Technical Summary

Problems solved by technology

Because in the existing and evolved 3G technologies, the handover completion request message is sent from the target network node to the original serving network node, it does not support the handover completion request message from the mobile node to the target network node. Changes to air messages have no practical value

[0028] 2. There is no step to avoid data loss in the above implementation scheme, so there is data loss during the switching process

[0032] The steps to avoid data loss, such as data forwarding, start after the handover completion request message is sent to the original service network node. If the efficiency of data forwarding is low, the handover efficiency will be low. When the amount of forwarded data is large, the handover time will be prolonged.

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