Mobile node and take-over access point and transfer methods thereof

Abstract

The invention provides a mobile node and a take-over access point and transfer methods thereof, which are suitable for a heterogeneous wireless network system. The heterogeneous wireless network system comprises a gateway, a first wireless network and a second wireless network which is different from the first wireless network, wherein the first wireless network comprises the take-over access point and the second wireless network comprises an original access point; and the take-over access point and the original access point are provided with an overlapping service area. The mobile node receives a network service provided by the gateway through the original access point at present; and when entering the overlapping service area, the mobile node establishes a connection with the take-over access point through a data link layer immediately, so that the network service can be prevented from being interrupted when the original access point is transferred to the take-over access point.

Description

technical field [0001] The present invention relates to a mobile node, a takeover access point, and a handover method applicable to a heterogeneous wireless network system; in particular, a mobile node, a takeover access point, and a handover method that do not cause network service interruption during handover . Background technique [0002] With the vigorous development of the Internet, the access method of the network has developed from a wired network to a wireless network, such as Wi-Fi regulated by the IEEE 802.11 standard and the global microwave access communication technology (Worldwide Interoperability for Microwave Access; WiMAX), people can use the mobile node to use the network service of wireless network. [0003] Generally speaking, a plurality of wireless networks with different specifications can form a heterogeneous wireless network system, and the mobile device can be handed over between different wireless networks in the heterogeneous wireless network sy...

AI Technical Summary

Problems solved by technology

[0005] In the prior art, the mobile node starts to look for access points of other wireless networks after leaving the service area of ​​the current wireless network, which often causes network service interruption during handover, resulting in low communication quality

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