This paper introduces a new kind of Java-server, the Smart Data Server (SDS). It offers the accessing of data with function-calls to SDS-networks. This allows the building of lean clients with the shifting of functionality to the SDS-network. The server builds the middle-tier in a multi-tier architecture (Client SDS-Network Database). It offers a frame for easy-to-build environment-independent ...

It is well known that the distribution of files transmission duration in the Web is heavy-tailed [9]. This paper attempts to understand the reasons for this phenomenon by isolating the three major factors influencing the transmission duration: file size, network conditions and server load. We present evidence that the transmissionduration distribution of the same file from the same server to th...

Poor performance and network congestion are commonly observed in the streaming media single server system. This paper proposes a scheme to construct a streaming media server cluster system based on FFMpeg. In this scheme, different users are distributed to different servers according to their locations and the balance among servers is maintained by the dynamic load-balancing algorithm based on ...

In this paper, we present and evaluate algorithms to address combined path and server selection (CPSS) problems in highly dynamic multimedia environments. Our goal is to ensure effective utilization of network and server resources while tolerating imprecision in system state information. Components within the framework implement the optimized scheduling policies as well as collect/update the ne...

Push-to-talk (PTT) is a walkie-talkie like service which performs an efficient and instant voice over Internet protocol (VoIP) communication in mobile ad hoc network especially for certain circumstances, such as battle field and earthquake or disaster relief. The authors have designed and implemented the PTT mechanism in ad hoc VoIP network. The PTT server and user agent combined with the pseud...

The Network Function Virtualization (NFV) paradigm is enabling flexibility, programmability and implementation of traditional network functions into generic hardware, in form of Virtual Network Functions (VNFs). To provide services, the VNFs are commonly concatenated in a certain ordered sequence, known as Service Function Chains (SFCs). SFCs are usually required to meeting a certain level of r...

Mobility management is the key feature of wireless network. When the mobile node roams from the home network to the foreign network, the foreign network access server usually does not have the security material of the mobile node, and can not authenticate the mobile node by itself. Thus the three-party authentication is used, and the foreign network access server consults the home authenticatio...

Many service providers on the Internet use multiple mirror servers to cope with request congestion. Here, the problem is how to select the best server out of them. We propose a DNS-based mechanism for server selection with preferred policies. DNS (Domain Name System) is used in almost all services and implementations. Therefore, our approach is generally applicable. The mechanism consists of tw...

With the explosive growth of the Internet have come problems of increased server load and network latency. This means that systems that require interchange of data between server and client over the network can be slow to unusable (at peak times). We are investigating methods for developing distributed CBR systems which minimise the load on the servers and the network, thus increasing response ...

In this paper we present a data dictionary server for the automated navigation of information sources. The underlying knowledge is represented within a medical data dictionary. The mapping between medical terms and information sources is based on a semantic network. The key aspect of implementing the dictionary server is how to represent the semantic network in a way that is easier to navigate ...