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In order to improve quality of service (QoS) of wireless environment in scene-based mobile social network service (mobile SNS), a novel prefetching method is proposed in this paper. Utilizing this method, prefetching decisions are made based on the relationship among users and access histories recorded in the client. When the user is viewing the scene or other components, client is allowed to prefetch...
A practical scenario to realize Ad hoc network based on the Linux operation system is proposed in this paper. A practical test network composed of several nodes is built and DSR (Dynamic Source Routing) protocol is selected to run on the test network. Meanwhile, in order to obtain better support for real time multimedia services, an improved DSR protocol considering delay demand is also testified...
To meet the business and user requirements, it is crucial to manage the quality of service (QoS) of composite Web service. Due to the dynamics nature of the Web services, the runtime behavior of Web services is likely to differ from the initial estimated one. Therefore, a re-planning to adapt the composite service to the QoS violated services, ensuring the global constraints and preferences will be...
One of the major problems of deploying RSVP in the mobile environment is called the advanceresourcereservation problem. If an RSVP reservation path is reserved in advance in the subnet that a mobile node will visit, the mobile node can continue its QoS session smoothly when it hands over to that subnet. However, if too many network resources are used for advance reservation, new QoS sessions originating...
As a resource reservation mechanism, the Resource ReSerVation Protocol (RSVP) faces a lot of challenges when applying it to the wireless and mobile networks. The interworking problems of RSVP and mobility management protocols have been extensively discussed over the last decade. As the solutions of this problem, mobility-aware RSVP schemes that integrate RSVP and micro-mobility management are becoming...
VoIP has been widely investigated to provide statistical quality of service (QoS) guarantees. We address the issue of how to select an efficient route to carry real-time traffic. Each eligible route is assigned a weight, which is updated according to network level QoS evaluation. When a new coming call arrives, originating signaling server first chooses two candidate routes from all practicable routes...
An efficient and scalable call routing in multimedia system is particularly important in realizing optimum network resource utilization, supporting load balancing and improving QoS. Distributed and hierarchical routing architectures perform in large-scale multimedia networks not as well as in small and medium-sized packet switched networks. We study this problem and provide a scalable routing solution...
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