Virtual machine is built on group of real servers which are scattered globally and connect together through the telecommunications systems, it has an increasingly important role in the operation, providing the ability to exploit virtual resources. The latest technique helps to use computing resources more effectively and has many benefits, such as cost reduction of power, cooling and, hence, co...

Determining an appropriate sending rate when beginning data transmission into a network with unknown characteristics is a fundamental issue in best-effort networks. Traditionally, the slow-start algorithm has been used to probe the network path for an appropriate sending rate. This paper provides an initial exploration of the efficacy of an alternate scheme called Quick-Start, which is designed...

Given the rising demand for wireless solutions in the area of machine-to-machine communication, we present the novel EchoRing protocol. It is designed to serve the communication needs of industrial applications, while being optimized for the wireless channel specifically. Directly taking known principles of tethered communication to the wireless domain is likely to yield degraded performance re...

In a Differentiated Services network, the use of TCP by an application impacts the service it gets from the network. TCP congestion control algorithms are designed to provide a fair sharing of resources in a best effort network as the current Internet. TCP is not conscious of the new services proposed by DiffServ, namely the different priorities packets are injected with into the network. Many ...

The UMTS enhanced uplink or high speed uplink packet access (HSUPA) provides efficient mechanisms for the radio resource management of radio bearers for best effort traffic. The resources available for the enhanced uplink users depend on several factors like the spatial configuration of the mobiles in the cells, the number of QoS users and the implemented RRM strategy. In this work, we provide ...

Tbmugbput fairness is an important d e r i a for evaluating TCP pe fomance. Fairness is especial! important for best effort service, which is still the dominant gpe o f service in the Internet and, predictab!, in the years to come. However, the TCP pmtocols prevailing in the Internet, including TCP Tahoe and TCP Reno, are known to be unfair, especial! to connections with larger mund-tnp delays....

Since TCP is considered unsuitable for the majority of the emerging multimedia applications, these applications primarily use UDP transport together with proprietary congestion control schemes that have better jitter and throughput characteristics. A common problem with these congestion control schemes is that they often exhibit a TCPunfriendly and unfair behavior. As the number of applications...

This paper describes the design, implementation, and evaluation of MiMaze, a distributed multiplayer game on the Internet, and, more precisely, on the design of dedicated transmission control mechanisms. MiMaze is implemented on a completely distributed communication architecture based on the IP multicast protocol suite (RTP/UDP/IP). This is the first work to analyze a distributed interactive g...

In high-speed communication networks, large propagation delays could have an adverse impact on the stability of feedback control algorithms. In this paper, classical control theory and Smith's principle are exploited to design an algorithm for controlling “best effort” traffic in high-speed asynchronous transfer mode (ATM) networks. The designed algorithm guarantees the stability of network que...

In current WLAN system that is designed for best-effort communications, there is not any quality of service (QoS) differentiation support. In this paper, we propose a fully distributed medium access control (MAC) adaptation method for service differentiation. It is implemented by dynamically updating the MAC layer parameters (such as contention window) to adapt to the network conditions in a cl...