Hung-Yi Teng

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In recent years, cloud computing has become a promising solution for decreasing the deployment and maintenance costs of Internet services. To provide Internet application service by using cloud resource, a service provider needs to consider the resource subscription cost and Service Level Agreement (SLA) of its users. Several kinds of pricing model of cloud(More)
Unstructured peer-to-peer (P2P) systems with two-layer hierarchy, comprising an upper layer of super-peers and an underlying layer of ordinary peers, are used to improve the performance of large-scale P2P systems. In order to deal with continuous growth of participating peers, a scalable super-peer overlay topology with a lower diameter is essential.(More)
Along with rapid development of Internet technologies and widespread adoption of broadband residential access, video streaming service becomes a promising killer application. In order to solve device diversity, scalable video coding (SVC) has been standardized by the Joint Video Team of the ITU-T VCEG and the ISO/IEC MPEG. Using SVC, each device is capable(More)
In this paper, we present a fast failover mechanism and a fast switchover mechanism to deal with link failure and congestion problems. In the fast failover mechanism, the controller pre-establishes multiple paths for each source-destination pair in the related OpenFlow-enabled (OF) switches. When a link becomes faulty, OF switches are able to failover the(More)
Worldwide Interoperability for Microwave Access (WiMAX) supports high bandwidth, broadband access, mobility, and Quality of Service (QoS) guarantee. Load balancing is required due to uneven distribution of traffic among different WiMAX base stations (BS) as well as mobility of WiMAX Subscriber Station (SS). Cell breathing is a well-known load balancing(More)