| Summary: | 碩士 === 樹德科技大學 === 資訊工程系碩士班 === 99 === With the advancement of wireless network technology, more and more people access real-time networking services through different wireless network connections. The quality of service will be very important for wireless communications. Furthermore, vertical handoff will be more and more frequently when people moving among the heterogeneous wireless networks. Therefore, it is an important issue that how to providing people with appropriate quality of service, and providing a sustainable quality after handover in the heterogeneous wireless networks. This paper proposes the Data Streaming Information Collect mechanism (DSIC) to collect information, and using grey system theory to analyzing network quality of service levels. Then, the grey situation decision count the sustainable QoS parameters and the Advanced-MIH mechanism sets QoS level and parameters information to the data link layer''s quality of service setting tables. Final, People will have a seamless connection environment with appropriate and sustainable quality of service. In this paper, we will implement our proposed methods in the Network Simulator 3(NS3) to proving those methods can providing the better quality of service among the heterogeneous wireless networks, and providing a sustainable quality after handover.
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