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Free-riding phenomenon is overwhelming in nowadays P2P network which causes researchers to investigate and develop many approaches to combat it. However, almost all the studies neglect the role of relative contribution of peers, namely willingness of contribution (WoC) in our paper. The ignorant to the ratio of peer's actually contribution to its physical capability would undoubtedly lead to unfairly...
We present a network-assisted scheme for media-aware bandwidth sharing among multiple video streaming sessions. Departing from the conventional paradigm of fair-rate allocation among data traffic flows, our scheme allocates the bottleneck bandwidth among the video streams according to their rate-distortion (R-D) characteristics, with the objective of minimizing the total video distortion of all streams...
With the rapid development of peer-to-peer networks, simulation is considered as a useful tool to demonstrate initial ideas before building prototypes with real network transmissions. In flow-based simulation models of peer-to-peer networks, the algorithm for rate allocation which computes the per-flow rate for several competing flows at each peer in a given network topology is a fundamental component...
The Bandwidth Broker proposed to manage the resources for DiffServ networks has two ways to implement, namely centralized and distributed approach. The distributed Bandwidth Broker offers scalability advantages over the centralized one, but the improper pre-compute of resource will make its bandwidth allocation unfair. The solution to this issue is characterized by a new fairness criterion, multi-path...
We describe the architecture of PHAROS (Petabit Highly-Agile Robust Optical System), developed under the DARPA CORONET program. PHAROS provides traffic engineering, resource management and signaling solutions for highly-agile, large-capacity core optical networks. PHAROS technology facilitates rapid configuration of network resources to address dynamic traffic needs in future global military and commercial...
Future satellite-based packet networks (FSPN) will utilize a request/grant MAC protocol referred to as demand assigned multiple access (DAMA) for uplink allocations. DAMA is conceptually similar to bandwidth-on-demand (BoD) protocols used in terrestrial networks, such as 802.16 and DOCSIS, which flexibly share total bandwidth according to actual loads and usage policies. However, unique characteristics...
Internet is becoming unable to overcome the challenges required by new services due to the lack of coordination among Internet service providers. This situation, frequently called network ossification, makes increasingly hard the deployment and the testing new network technologies. Network virtualization has emerged as one solution of this problem. One network (substrate network), composed of physical...
In OFDMA systems, reducing the inter-cell interference among adjacent cells is a very important issue especially for the cell-edge users. In this paper, we propose a distributed algorithm that maximizing the system total throughput considering proportional fairness. In our proposed algorithm, the frequency resources in each cell is divided into high and low power regions. The bandwidth allocations...
Convex optimization has been widely used to model bandwidth allocation policies among TCP flows in the Internet. When the offered load is less than capacity, stochastic stability of networks using such policies has been established for exponentially distributed file sizes. The problem has remained open for general file size distributions, which is very relevant as it is well known that Internet file...
Multi-nexthop routing mechanisms is the key point in network congestion, and the essential question is how to forward packets among multi-nexthop to reach equiponderant forwarding. This paper proposes an equiponderant forwarding strategy in multi-nexthop routing, which forwards the packets according to the actual capability of each node, and resolves the equiponderant forwarding problem of multi-nexthop...
It is a challenging task that enables performance isolation while providing performance guarantees among applications that share storage infrastructure. This paper presents admission-control-based proportional allocation (APA), a novel I/O request scheduler that combines the admission control of worst-case resources reserved with the proportional resources allocation to manage the bandwidth resources...
With the proliferation of wireless multimedia applications, multicast/broadcast has been recognized as an efficient technique to transmit a large volume of data to multiple mobile stations at the same time. In most multicast systems, the transmitter (e.g. base station) adapts its data rate to the furthest located users, so as to guarantee service quality to as many users as possible. Predictably,...
Multicast communication is an efficient method of data transmission and distribution among a group, especially when network resources are inadequate and needs to be shared. Fair share of network resources, such as, bandwidth, is desirable in such cases. Although there has been an intensive research effort to design protocols and construct multicast routing graphs for a single multicast group, construction...
Applications using grid computing infrastructure usually require resources allocation to satisfy their quality of service (QoS) requirements. Given that the grid infrastructure is a set of computing resources geographically distributed, the support of grid applications requires the allocation of computing resources and bandwidth to enable communication among these resources. The objective is to accommodate...
Orthogonal Frequency Division Multiple Access (OFDMA) allows multiuser to make use of the same bandwidth as the single user OFDM for data transmission. This paper considers resource allocation algorithm which supports the user Quality of Service (QoS) with Multiuser OFDM cellular system. In this paper, we discuss how to achieve QoS without wasting subcarriers after subcarrier allocation. A proposed...
In previous work we have studied the use of sequential second price auctions for sharing a wireless resource, such as bandwidth or power. The resource is assumed to be managed by a spectrum broker (auctioneer), who collects bids and allocates discrete units of the resource. It is well known that a second price auction for a single indivisible good has an efficient dominant strategy equilibrium; this...
The current trend in wireless communication networks involves the integration of different wireless access technologies into a single operator network. The possible leveraging of high deployment costs, and the possibility to increase revenue have also introduced the concept of network sharing between different operators. The problem of optimal allocation of bandwidth to multimedia applications over...
The explicit control protocol (XCP) is a novel and promising congestion control protocol that outperforms TCP in terms of efficiency, fairness, queue length, packet loss rate and convergence speed. However, the latest research found a weakness of XCP, in a multi-bottleneck environment, a bottleneck link may have a significantly decline in utilization, and some flows may not receive their fair bandwidth...
A load-based relay selection algorithm that improves the fairness of resource allocation is proposed for relay-based OFDMA systems. This algorithm takes into account the traffic load condition (bandwidth requirement) of relay link users and direct link users. The transmission mode (direct transmission mode or relay transmission mode) of each user will be adjusted based on the user average data rate;...
Emerging IT service providers that aim at delivering supercomputing power available to the masses over the Internet rely on high-performance IT resources interconnected with ultra-high-performance optical networks. To adjust the provisioning of the resources to end-user demand variations, new infrastructure capabilities have to be supported. These capabilities have to take into account the business...
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