| Summary: | 碩士 === 國立中央大學 === 資訊工程研究所 === 98 === The wireless communications have been evolving quite rapidly for last few decades. Innovative technologies of various kinds were one by one standardized and deployed, which has revolutionized the way people surfs the Internet. In Taiwan, we nowadays have WiFi, 3.5G and WiMAX to choose from. Whatever the technology you use suffices most needs for accessing the information on the Internet. However, some issues arise from this change. From operator''s point of view, it wonders how to deliver services over different networks while maintaining good Quality of Service(QoS); From user''s point of view, he/she wonders how to select best network based on the context. The advent of IP Multimedia Subsystem(IMS) tries to address the former problem. With its introduction, it’s apparent that subscribers demand a client application to gain access to it.
The rise of social networking sites promotes the interpersonal relationships in recent years. People discover their friends, share contents, create communities, …, and so on via them. A survey conducted in early 2010 reveals that more than half of mobile Internet users go online to socialize. A research found that the combination of IMS and the world of social networking brings about far better service experiences.
The thesis presents a connection manager for heterogeneous wireless networks, which is further integrated with the mature IMS client developed by our laboratory. The aim is to provide better surfing experiences. In addition, video sharing element is added to the IMS client.
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