Shin-Jer Yang

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Cloud Computing is the next generation Internet service and data center, and it is also used for public utilities and on-demand computing. Cloud computing is not a totally new technology, but rather a derived concept of application and service innovation in which, multi-tenancy is one of the important issues among the core technologies of cloud computing(More)
MANET (Mobile Ad-hoc Network) is a type of dynamic configuration wireless ad-hoc network that does not require the basic internet construction.  Clustering of devices in MANET could reduce overhead, flooding and collision in communication and make the network topology more stable. Cluster Heads (CHs) are determined dynamically and in charge of(More)
Owing to fast technology developments of wireless communication and mobile computing, the integration of UMTS, WLAN, WiMAX and Mobile IPv6 (MIPv6) is one of the most important issues. While mobile nodes move between wireless networks, it will increase the possibility of service interruptions and radio link disconnections under different mobile networks.(More)
Five service types with different priorities are defined to meet the QoS needs for different users, there are UGS, ertPS, rtPS, nrtPS, and BE on the IEEE 802.16 network. First, SS has to send connection request to BS before it is ready to transmit data. Then, SS can be allowed to transmit data white holding the allocated bandwidth from BS. Actually, BS(More)