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This paper is to study how to realize the seamless inter-AP handoff for the express mobile gateway on the train, which not only must execute the handoff rapidly, but also have to make the handoff decision quickly. Hence, the special and general inter-AP handoff concepts presented firstly and then a general inter-AP handoff model is built up. Based on this model, a radio-signal-measurement based handoff...
An open onboard Internet system model based on the centralized access mode is designed for the m-commerce on train which is easy to merge the oncoming broadband wireless access and network technologies.The functionalities and entities in each layer are investigated and the hot issues are discussed according to this model. It is shown that the onboard Internet applications including the m-commerce...
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