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To effectively utilize storage space of edge streaming media servers, cache policies are being studied. Unlike traditional work that focused on hit ratio and overall system bandwidth cost, this paper recognize different significance of users and propose the concept of caching utility as a new metric to evaluate caching strategies. A user based caching algorithm, USCS, involving differentiated service...
According to current RTCP standards, the QoS of multi-path transmission could not be evaluated. A solution is purposed to solve the problem. A TLV-coded field, containing the packet routing, is added before RR/SR blocks. The kind of app-specific packet could be used to implement the solution, which makes the solution fully compatible with current RTCP standards. IP address is used to identify the...
While multiple access links enhance the availability and utilization of multicast service nodes, the resource allocation balancing needs to be performed on a link basis, which is usually not considered in most overlay multicast routing algorithms. To accurately represent the bandwidth consumption of each overlay node, we need not only a multihomed proxy model to describe the overlay multicast routing...
Several studies have shown that the BGP protocol adopts a special routing policy such that the default BGP route is usually not the best choice in terms of path length or quality of service. In order to send the traffic through the shortest AS paths by overlay routing, we have to place overlay nodes at several critical points along such paths. Otherwise, these AS paths will never be available to end...
Compared with traditional IP Multicast, overlay multicast is not only flexible in functionality but also compatible with current network infrastructure. Therefore it is emerging as an effective solution for most group communications over the Internet. Affected by end-host overlay systems, the overlay multicast routing problem is studied under a single homed model in most literatures. Under this model...
While a variety of routing algorithms have been invented for overlay networks, only a few studies focus on the placement problem of overlay nodes. However, the performance of overlay routing always depends on the routing policy of the underlying Internet, such as BGP routing. According to the BGP routing policy, the result routing path heavily depends on the locations of the two end nodes. By placing...
We propose a novel overlay routing infrastructure, namely Overlay-based Service Distribution Network(OSDN), which eliminates path inflation due to the inter-domain routing policy and could serve as a universal platform to convey various online services more efficiently. Its basic idea is to deploy overlay nodes at critical locations in the Internet such that the service provider and its customers...
Along with the fast developing of network technology, the number of Web page and user of network search become very enormous. In order to solve the problem of inefficiency and low precision in the search that users have different demand and knowledge background, this paper presents a new text model called vocabulary semantic net which can be applied to build personalized search engine and tested with...
The investigation of telephony has visualized IPv4, and current trends suggest that the study of linked lists will soon emerge. In our research, we disconfirm the synthesis of 802.11b, which embodies the intuitive principles of encrypted hardware and architecture. Our focus in this position paper is not on whether public-private key pairs and XML are continuously incompatible, but rather on proposing...
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