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With the rapid development of wireless networks, the solution for degradation of Transmission Control Protocol (TCP) over wireless networks becomes more and more significant because of the software reusability. In order to improve the performance of TCP protocol, several studies have been proposed in different directions. Some of them attempt to find a suitable path for TCP transmission. Expected...
In Wireless Ad Hoc Networks, articulation nodes are critical nodes that connect two (or more) network components. Owing to their relevance, ways to extend the lifetime of articulation nodes have been considered in the literature. In general, such techniques aim to allow articulation nodes to save battery power. However, in case of articulation node failure, ways to reestablish the communication, even...
The FPGA's interconnection network not only requires the larger portion of the total silicon area in comparison to the logic available on the FPGA, it also contributes to the majority of the delay and power consumption. Therefore it is essential that routing algorithms are as efficient as possible. In this work the connection router is introduced. It is capable of partially ripping up and rerouting...
Modular addition is a widely used operation in Residue Number System applications. Specific sets of moduli allow fast RNS operations such as binary conversions and multiplications. Most of them use modulo 2n − 1 and 2n ; 1 additions. This paper presents four fast and small architectures for these specific moduli targeting modern FPGAs with fast carry chains. The use of this arithmetic dedicated feature...
It is a very important topic to reduce network energy consumption for constructing green network in current computing area. Rate adaptation of network device provides an effective approach to optimize network energy consumption and improve network energy efficiency. In this paper, we propose a global optimization approach for network energy efficiency based on rate adaptation. According to the characteristics...
In a Delay Tolerant Network (DTN), the Probabilistic Routing Protocol using the History of Encounters and Transitivity (PRoPHET) routing protocol mainly uses the delivery predictability of node encounters and transitivity to select and forward bundles to the desired neighbor nodes regardless of their distance. This concept introduces a delivery dilemma and the drawbacks of a low delivery ratio, high...
The flourishing large-scale and high-throughput web applications have emphasized the importance of high-density servers for their distinct advantages, such as high computing density, low power and low space requirements. To achieve above advantages, an efficient intra-server interconnection network is necessary. Most state-of-the-art high-density servers adopt the fully-connected intra-server network...
Social networks have brought a whole new era of staying connected with family, friends and even strangers. This enables us in finding similar kind of people around us or locating who is important for us. Indirectly it measures the relations with whom we have connected through social metrics e.g. Centrality, similarity etc. The same concept can be applied for efficient routing in disconnected networks...
In this paper, we introduce a novel least distance smart neighboring search (LDSNS) to determine the mostefficient path at one-hop distance over WSNs. LDSNS helps to reduce the energy consumption and speeds up scheduling for delivery of data. It provides cross layering support and linking MAC layer with network layer to reduce the amount of control messages. LDSNS is a robust and efficient approach...
In this paper, we study the delay performance of backpressure routing algorithms using LIFO schedulers (LIFO-backpressure). We uncover a surprising behavior in which, under certain channel conditions, the average delay of packets decreases as the traffic load in the network increases. We propose and analyze a queueing-theoretic model under which the scheduler can transmit packets only if the queue...
Most Internet routing protocols have one of two algorithms lurking at their core — either Dijkstra's algorithm in the case of link-state protocols or a distributed Bellman-Ford algorithm in the case of distance-vector or path-vector protocols. When computing simple shortest paths these protocols can be modified to utilize all best paths with a combination of next-hop sets and Equal Cost Multi-Path...
High reliability is always pursued by network designers. Multipath routing can provide multiple paths for transmission and failover, and is considered to be effective in the improvement of the network reliability. However, existing multipath routing algorithms focus on how to find as many paths as possible, rather than their computation or communication overhead.
Multi-Constrained Path (MCP) algorithms are path finding algorithms, unlike conventional routing algorithms, they not only give a path between source and destination, also verifies whether the path satisfies the given constraints (Right turn, Left turn and U turn). MCP algorithms are NPComplete. The MCP algorithms are aimed to find the shortest path in a road network that satisfies the turn prohibitions...
Vehicle Ad hoc Network (VANET) provides an opportunity for innovation in the transportation area, enabling services for Intelligent Transportation System (ITS). Because of VANET features, such as highly dynamic networks topology and frequent discontinuity, it is desirable to establish, at a given moment, routes for fast delivery of messages, having a low probability of disconnection. This leads to...
Delay-Tolerant Networks (DTN) model systems that are characterized by intermittent connectivity and frequent partitioning. Routing in DTNs has drawn much research effort recently. Since very different kinds of networks fall in the DTN category, many routing approaches have been proposed. In particular, the routing layer in some DTNs have information about the schedules of contacts between nodes and...
Dual stripline routing is more and more widely used in the modern high speed PCB design due to its cost advantage of reduced overall layer count. However, the major challenge of a successful dual stripline design is to handle the additional interferences introduced by the signals on adjacent layers. This paper studies the crosstalk effect of the dual stripline with both parallel and angled routing,...
Many routing protocols have advanced the Wire- less Sensor Network(WSN) paradigm with each new method offering unique ways to maximise Quality of Service(QoS) while minimising energy cost to the network. Tree routing is a well examined method with a proven record in offering a high level of service with trees constructed to fulfil a particular routing objective defined by a chosen metric. The tree...
Content-Centric Network (CCN) provides a cleanslate design for the Internet, where content becomes the primitive of communications. In CCN, routers are equipped with content stores, which act as caches for frequently requested content. This design enables the Internet to provide content distribution services without any application-layer support. On the other hand, as caches are integrated into routers,...
WMN (Wireless Mesh Network) is a useful wireless multi-hop network with tremendous research value. A good routing mechanism for WMN can use the whole bandwidth of the network and can assure the quality of service of traffic. Through simulations we verify that the routing metric ETX (Expected Transmission Count) cannot assure good quality of wireless links. To improve the routing performance, a QoS-assured...
In the paper we present integer programming (IP) optimization models for flexgrid elastic optical networks (EON). We consider several different basic assumptions regarding flexibility of EON that lead to a variety of IP formulations differing in precision and complexity. As usual, detailed models aiming at precisely describing technological aspects of EON suffer from tractability issues resulting...
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