| Summary: | 碩士 === 國立中央大學 === 通訊工程研究所碩士在職專班 === 97 === QoS of application services is a critical issue when the user is use application service ,But as the wireless network is gradual progress the user can use diversified wireless network ,then it is need to consider that how to guarantee Qos when user handover in different wireless network.Now the multimedia service of the wireless network is studied base on IP multimedia subsystem (IMS), IMS can provide the multimedia service with guarantee QoS then it is big issue when user handover in different wireless network, It needs to delay the authentication and authorization of IMS and keeps resource reservation with QoS, They can just continue the previous service. Therefore they has waited for long time, So we propose an adaptive end-to-end QoS procedure utilizes 802.21 MIH to assisting network handover and combine the information that IMS changes hands at the same time, in order to reduce it is postponed for hand time that the user meets while stepping the different network and using IMS service the further one enables users to experience that step the convenience of using the multimedia service of different network handover.
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