Fast handover protocol flow for heterogeneous wireless networks

Abstract

The invention discloses a fast handover protocol flow for heterogeneous wireless networks. The main implementation process of the flow is characterized in that a mobile terminal periodically sends the mobile terminal related information reports to a wireless access network; a network-side wireless access network reconfiguration manager predicts the motion tract of a user; when the mobile terminal needs to initiate handover to maintain the business continuity, the predicted motion information and the network topological information are combined to determine the aggregate of network candidates; a target network for the mobile terminal is selected in advance by the wireless access network reconfiguration manager of the present network and simultaneously the target network is informed to reserve resources required for the mobile terminal; the mobile terminal monitors the received signal intensities of the present network and the target network an determines the optimum handover trigger time; and after triggering handover, the mobile terminal accesses to the target network firstly and then releases the original link resources. The fast handover protocol flow can reduce the handover delay of handover among the heterogeneous wireless networks, increase the success rate of handover and ensure the quality and continuity of business services.

Description

technical field [0001] The invention belongs to the technical field of communication, and relates to a protocol flow for fast switching of heterogeneous wireless networks, which can support fast switching of mobile terminals between heterogeneous wireless networks. Background technique [0002] In recent years, with the development of semiconductor technology, microelectronics technology and computer technology, various wireless communication technologies have also developed rapidly, with higher transmission rate, larger system capacity, higher service quality and more reasonable and efficient resource use. It is the development trend of the future mobile communication system. With the continuous development of communication technology, various wireless access networks have emerged one after another, such as WLAN, WiMAX, UMTS, Bluetooth, etc., together with traditional cellular networks, they form a unified and complex heterogeneous wireless network environment. At the same...

AI Technical Summary

Problems solved by technology

However, this solution is mainly aimed at the improvement of the specific process of a specific mobility protocol. It needs to provide tunneling technology to control the packet loss rate, and it needs the software and hardware support of the mobile client and the wireless network. It is difficult to implement and the versatility is not good.

[0007] From the above analysis, it can be seen that the existing various heterogeneous wireless network handover protocols have poor versatility and will introduce a large handover delay. Most of them need to modify the existing network protocols and the support of corresponding network equipment. The volume and difficulty are relatively large, and there is no solution to fully utilize the cognitive function of the cognitive wireless network to support the handover protocol process

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