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With the extensive using P2P networks, P2P data stream occupied more and more bandwidth, it will affect the performance of the entire Internet. This paper studies the P2P nodes which exchange traffic disorder, through introducing XCP congestion control protocol, designs network region-based exchange unit and flow control strategy to achieve flow control. The simulation results show that the flow control...
The most common broadband access technology today is the (Asymmetric) Digital Subscriber Line (A)DSL. As the name implies, ADSL allocates the bandwidth of upstream and downstream asymmetrically, significantly favoring the downstream direction. Popular applications that serve content over these networks in the upstream direction, such as peer-to-peer (P2P) applications, efficiently utilize the comparably...
An admission control Algorithm must organize among flows and should afford assurance of how the medium is shared between nodes. In a wired network, nodes can keep an eye on the medium to see how much bandwidth is being used by the network. On the other hand, in an Ad-Hoc network, during communication nodes possibly will use the bandwidth of neighbouring nodes. Consequently, the bandwidth consumption...
The major objective of an admission control in wireless mesh networks is to prevent excessive real-time traffic from over-utilizing the bandwidth resources. A key component of an admission control is an accurate estimator of the bandwidth available at each node and of the actual bandwidth (including the MAC overhead) required by a new flow. This estimation problem is particularly difficult when node...
BitTorrent(BT)-like P2P traffic which occupy main network bandwidth affect other normal network applications badly. This paper presents a triggered dynamic mechanism for BT-like P2P bandwidth management. According to the variety of utilization percentage of egress router input/output cache, this mechanism could estimate the potential network congestion and be triggered to control the BT-like P2P bandwidth...
The presence of high-volume file-sharing activity on the Internet has caused reconsideration of purely flat-rate pricing for bandwidth in some access networks through the use of dynamic differential service priorities for protocol-agnostic (application-neutral) congestion control. We study how BitTorrent-style file-sharing depends on flat-rate pricing. A simple deterministic game-model of BitTorrent...
This paper presents a novel transport protocol, CUSP, specifically designed with complex and dynamic network applications in mind. Peer-to-peer applications benefit in particular, as their requirements are met by neither UDP nor TCP. While other modern transports like SCTP or SST have also tried to combine the advantages of TCP and UDP, CUSP overcomes their technical and conceptual shortcomings. CUSP...
In this paper we propose and evaluate a combined SVC-MDC (Scalable Video Coding & Multiple Description Video Coding) video coding scheme for P2P video multicast. The proposed scheme is based on a full cooperation established between the peer sites, which contribute their upload capacity during video distribution. The source site splits the video content into many small blocks and assigns each...
P2P activity has been a significant and growing component of Internet traffic. With the increasing number of P2P application users, the P2P applications are consuming most of the Internet bandwidth; otherwise they have a negative effect on traditional Internet applications. In order to solve this problem, researchers proposed various technologies to manage P2P traffic, such as P2P traffic control,...
It is important to use an ALM (application layer multicast) tree with broad bandwidth to ensure the quality of streaming applications. However, when constructing an ALM tree without information on underlay traffic, we cannot know how much congestion there is in links. Therefore, if unexpected congestion in links occurs, the quality of ALM transmissions may worsen. However, no polynomial-time algorithms...
In this paper we model the data traffic congestion scenario in a vehicular ad-hoc network, and we apply the Adaptive PI Rate Controller (APIRATE) to deal with the congestion. Derived from classical control theory, the APIRATE controller performs AQM (Active Queue Management) by controlling the source rate based on the instantaneous queue length of the congested node. We then study the performance...
Multichannel wireless networks provide the flexibility to utilize the available spectrum efficiently for achieving improved system performance in terms of throughput and spectral efficiency. However, there has been no practical means for provisioning quality of service (QoS) in multichannel wireless networks. While previous proposals providing signaling and adaptation mechanisms for QoS, they support...
DSL aggregation networks are evolving to the standard platform for the delivery of multimedia services such as television and network based personal video recording. These multimedia services introduce large challenges for network operators as they are sensitive to packet loss. Therefore, admission control mechanisms are required to avoid congestion caused by allowing too many sessions. However, as...
Vehicular ad-hoc networks (VANETs) play a critical role in enabling highway active safety applications such as collision warning and vehicle tracking. The most pressing challenge in enabling such applications is to maximize the amount of disseminated vehicle state information while avoiding network congestion. In this paper, we explore the structure of VANET tracking problem and propose an adaptive...
It is crucial for P2P applications to control their traffics for saving the Internet bandwidth. During the P2P communication, if peers tend to share the data with near peers, the Internet traffic can be reduced. Thus the topology of the P2P networks will be clustering. In this article, we study downloading strategies for the living P2P applications with clustering topology. First, we combine two popular...
Despite the significant body of research that has been conducted on quality of service (QoS), the notion of a dominant approach to end-to-end (E2E) QoS remains elusive. Beyond the ever present issue of deployment, the complexity and limited speed of resource negotiation arising from per-hop or per-domain interactions limit the general utility of the existing approaches. In this paper, we propose a...
We describe a method of adaptively controlling bandwidth allocation to flows for reducing the file transfer time of short flows without decreasing throughput of long-duration large flows. According to the rapid increase in Internet traffic volume, effective traffic engineering is increasingly required. Specifically, the traffic of long-duration large flows due to the use of peer-to-peer applications,...
Following the design philosophy of XCP, VCP is a router-assisted congestion protocol that intends to balance the efficiency and the fairness control in high Bandwidth-Delay Product networks. While both VCP and XCP achieve comparable performance, VCP represents a more practical alternative of deployment as it only requires the use of two ECN bits in the IP header. However, the use of two ECN bits only...
In this paper we present a max flow multipath routing algorithm (MFMP) with congestion mechanism that is designed to reduce latency, provide high throughput and reduce packet loss. The congestion mechanism used, reduces overhead by limiting congestion information to local nodes. Together with Ford-Fulkerson algorithm used to determine a set of paths that are disjoints or virtually disjoint, MFMP is...
With the best-effort TCP transporting foreground traffic, below-best-effort transport protocols are developed to transport background traffic. However, we argue in this paper that: 1) two fixed levels of priority are not enough, and 2) the background and foreground transfers are subjective concepts which can only be decided by users but not arbitrarily determined by the network according to the application...
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