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We present LVRI, a hybrid link-state routing protocol based on exchange of link states in a region of interest. The region of interest (ROI) is defined as a connected component of the network that includes the source, destination nodes and the nodes that act as relays for the data. An ROI is established on-demand and exists as long as there are data to be sent. Each node in the region of interest...
BitTorrent is the most widely used Peer-to-Peer (P2P) protocol and it comprises the largest share of traffic in Europe. To make BitTorrent more Internet Service Provider (ISP) friendly, BitTorrent Inc. invented the Micro Transport Protocol (uTP). It is based on UDP with a novel congestion control called Low Extra Delay Background Transport (LEDBAT). This protocol assumes that the receiver always gives...
Requirements on end-to-end latency and jitter are becoming more and more important due to new real-time services ‘delay sensitive’ to be transported. Capability to support measurements of end-to-end latency and jitter is essential in particular for Carrier Ethernet products [1]. This paper addresses a concrete example of measurement of the end-to-end latency and jitter in a Carrier Ethernet network...
Using a decentralized content distribution scheme is appealing when considering the potentially enormous amount of data generated by high quality video on demand (VoD) services. There is, unfortunately, little information available about which form of content delivery would yield maximum benefit and how it should be configured to achieve that, given a certain cost structure and request distribution...
Many Internet users use P2P live streaming services which deliver live video contents to many users. In the services, the video content is sliced into small pieces called chunks. The peers not only receive but also send the chunks to watch the video contents. Source's load for delivering is reduced. In an Offer Select method, each peer offers sendable chunks to it's neighbors. The neighbors select...
We extend the mean-field (a.k.a. fluid-analysis) approach for massively-parallel continuous-time Markov chains (CTMCs) to models with both Markovian and deterministically-timed transitions. We introduce a new low-level formalism for specifying massively-parallel models with generally-timed transitions, the population generalised semi-Markov process (PGSMP). We then show how systems of coupled delay...
The notion of a decentralized lookup service is very useful for many distributed applications. Information lookup systems using Distributed Hash Table (DHT) have been actively studied. In the Chord DHT, nodes are configured as a ring structure and lookup requests are for-warded along with the ring. In order to get information efficiently, response time should be short. However, since Chord overlay...
Recently, it has been noted that the inefficiencies in peer-to-peer (P2P) overlay networks result in a large quantity of traffic among internet service providers (ISPs) or autonomous systems (ASes). To optimize cross-ISP/AS traffic, the existing approaches introduce network-aware strategies in which peers select geographically close peers as neighbors using topological information. However, each P2P...
Wireless Underground Sensor Networks (WUSNs) can be widely adopted to monitor the environment in agricultural, security and ecological applications. In most applications, besides underground sensor motes, aboveground motes are deployed to gather information. However, due to the different communication ranges of the channels, hidden terminal problem occurs when multiple underground motes send data...
Peer-to-Peer (P2P) network structure is widely employed for video streaming applications due to its high stability, flexible extensibility and ability to share data stream loading among different peer nodes. This paper proposes an interleaved video frame distribution (IVFD) scheme to resourcefully support full VCR functionalities in P2P environment without searching new source. Instead of acquiring...
Data request task scheduling is one of the important issues for P2P VoD systems. However the existing data scheduling strategies in P2P VoD system is not fair enough. They make many nodes, which upload data actively, bear very heavy load, while those selfish nodes providing no resource sit idle. This paper presents an admission control strategy on serving nodes combining with the incentive mechanism...
Predictive methods for learning network distances are often more desirable than direct performance measurements between end hosts. Yet, predicting network distances remains an open and difficult problem, as the results from a number of comparative and analytical studies have shown. From an application requirements perspective, there is significant room for improvement in achieving prediction accuracies...
The high dynamic of mobile peer-to-peer network makes the topology of network changing frequently, inconsistent of overlay network and bottom physical network topology, which can make worse network capability, higher failure rate of super-peer, longer query delay, lower effect of data transmission, as well as lower success rate of resource searching and system instability. This paper proposes a resource...
The main function of biomedical sensor network is to guarantee that the data packets from patients can be delivered reliably to the destination node or medical center. Attached to patients, these nodes can be mobile, thus forming a mobile wireless sensor network (mWSN). Moreover, non-cooperative nodes may also be present in the network. This paper therefore proposes a routing method for non-cooperative...
In recent years, Peer-to-Peer (P2P) multimedia streaming has become an alternative to cable/satellite TV services. Many P2P streaming applications further provide users with DVD-like operations: play, pause, chapter selection, fast-forward, and rewind. Such a real-time interactive multimedia streaming is commonly referred to as the P2P Video-on-Demand (VoD). To further improve the streaming quality,...
To securely exchange data over public networks, such as the Internet, organizations often utilize Virtual Private Networks (VPNs). However, relying on these potentially large overlay networks makes them vital targets for Denial-of-Service(DoS) attacks. Thus, recent approaches for VPN auto-configuration address DoS resistance by employing distributed management algorithms. Nevertheless, there is no...
Caching consistency in a MANET environment is an important issue as it is directly related to MANET connectivity. However, existing cooperative caching schemes mostly focus on delta and/or weak consistency. Recently, RPCC was proposed, but it cannot overcome traditional PUSH and PULL methods in terms of ensuring a strong consistency. In this paper, we propose three algorithms that are based on the...
Skyline queries have played an increasingly important role in many applications such as web mining, multi-preference analysis and decision making. Most existing studies mainly focus on centralized systems, and skyline query processing in distributed environments is still an emerging and challenging topic. In this paper we propose SkyStorm, a delay-bounded skyline computing approach by exploiting the...
In this paper, the connectionless multicast routing MCOM (Multipoint relay Connectionless Multicast) is introduced for mobile Ad hoc networks. MCOM adapts over a wide ranges of density of group members. It appears as unicast with few receivers and as flooding protocol, similar to Simplified Multicast Forwarding (SMF), with many receivers. MCOM utilizes the forwarding structure Multipoint relay (MPR)...
Most home computers have upload bandwidths that do not allow them to stream good quality video. As a result, they cannot fully participate in peer-to-peer video streaming solutions. We propose to address that issue by letting these clients use the storage space they have on one or more remote servers. Each time a client plays a streaming video, it will upload a copy of that video to one of these servers...
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