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With the rapid development of Internet technology, the mobile terminal as a carrier get more and more popular, such as smart phones, tablet PCs and other mobile wireless communicated devices, so that the MDTN (Mobile Delay Tolerant Network) has become a hot topic in the wireless sensor networks. At the same time these mobile devices have the advantages of mobility and portability, but there are some...
For mission-critical application of WSN, it's essential to guarantee multi-QoS requirements including of delay and reliability as far as possible. The existing multipath routing methods fulfill QoS demands by disseminating the redundant replica over multiple paths, leading to low energy efficiency and higher delay. In this paper, a novel Directional Transmission based QoS-aware Opportunistic Routing,...
The presence of open-faults in NoC channels drastically drops packets while routing them causing severe degradation of network performance. Nevertheless, it can still be compensated by utilizing a fault-repairing scheme. This paper shows how the performance of a NoC architecture can be improved through self-repairing of open channels using short-defects. Simulation results reveal that the performance...
The feasibility, scalability and performance of Internet-oriented Software Defined Network (SDN) are confronted with severe challenge, so it needs multiple controllers that influence every aspect of SDN performance. An effective placement algorithm of these controllers is especially important. In this paper, we formulate the Multiobjective Optimization Controller Placement (MOCP) problem and focus...
P2P networks constitute the foundation for many scalable and fault-tolerant applications. These networks may consist of millions of peers due to their decentralized design. While each peer advertises the same service interface, the actual data provided by common large-scale P2P applications often yields an imbalance, i.e., particular peer subsets are more frequently contacted than the rest of the...
This paper presents a distributed on-line test mechanism that detects stuck-at faults (SAFs) in the channels as well as identifies the faulty channel-wires in an on-chip network (NoC). The proposed test mechanism improves yield and reliability of NoCs at the cost of few test clocks and small performance degradation. Additionally, the mechanism is scalable to large-scale NoCs. We study the impact of...
From the space and time dimension, the FPGA circuit is devised some levels with “computing unit + memory/register” via analyzing the characteristics of the FPGA circuit. Combined with the location importance, the connection degree among the nodes and their own soft error probability, an importance analysis model is proposed. And then the testing points are optimized based on the importance of each...
Many applications of sensor networks collect massive data in a coordinated approach, such as monitoring volcanoes, oceans and forests. We propose, therefore, two protocols at the network stack to enable multiple frequency communication. MultiFCTP extends the state-of-the-art CTP to route packets using multiples frequencies. FlushMF is a transport protocol that extends Flush by supporting multiple...
Wireless sensor networks are comprised of a group of nodes, which are randomly distributed in an environment. Since the energy consumptions of nodes are limited in these networks, data should be collected and sent optimally and in an energy-efficient way. The available routing protocols are used to send data in this way. The main responsibility of these protocols is to reduce energy consumption and...
Underwater Wireless Sensor Network (UWSN) is emerging lots of attention due to its various types of characteristics and applications. Distinctive underwater characteristics leads to many challenges such as-high propagation delay, data losses, nodes mobility, localization, nodes deployment while designing any reliable and efficient routing protocol. In this paper, an extension of CDBR (Forwarding nodes...
Opportunistic Routing is a new routing paradigm in wireless ad-hoc networks. In this paradigm, the packets are routed with no fixed and predetermined next hop in the network. Broadcast nature of wireless medium is used in opportunistic routing and the next hop will be selected of the receivers of a packet. A problem that has still remained in opportunistic routing is congestion occurrence along the...
The susceptibility of on-chip communication links and on-chip routers to faults has guided the research towards focusing on fault-tolerance aspects of 2D and 3D Network-on- Chips (NoCs). In this paper, we propose Logic-Based Distributed Routing for 3D NoCs (LBDR3D), a scalable, re-configurable and fault-tolerant mechanism, which utilizes only two virtual channels for implementing any deadlock-free...
Software-Defined Networking (SDN) is a recent model of networking architecture which splits the network control from data forwarding functions. Most SDN solutions have in their scope the wired networks, but more recently, some attempts have been made to adapt SDN architecture for the context of wireless mesh networks (WMNs). In the present paper, we examine whether the use of the SDN paradigm in WMNs...
This paper studies the fault management in mobile ad hoc networks. We focus on schemes which provide the robustness in MANETs: service restoration and service protection. Firstly, we propose an analytical comparison of service restoration, in terms of restoration time, at the routing layer (reactive and proactive protocols). Service restoration with reactive protocol is the most suitable in MANETs...
To pave the way towards using adapted wide scale telco technologies within dedicated networks environment, there is a dire need to increase the reliability of the end-to-end communication beyond what is currently offered to individual subscribers towards the levels previously available in operations technology. This can be achieved by adding a new dynamic Software Defined Networks (SDN) routing overlay...
TSV failures due to manufacturing defects and thermal-induced latent defects result in yield and reliability issues in 3D-ICs. Recent work has shown different temperature mitigation techniques and fault tolerant architectures for 3D-ICs. It is known that TSVs are effective in reducing temperature by providing thermal conductivity. This is the first work that jointly considers temperature mitigation...
Traditional routing in the Internet is best-effort. Path differentiation including multipath routing is a promising technique to be used for meeting QoS requirements of media-intensive applications. Since different paths have different characteristics in terms of latency, availability and bandwidth, they offer flexibility in QoS and congestion control. Additionally protection techniques can be used...
The design of a trust management framework in a mobile ad hoc network and its various components to protect against different attacks has a significant impact upon the performance of the secure routing protocol which is meant to form the most reliable route for data delivery. Specifically, the current work focuses upon the impact of certain parameters specific to two components within the proposed...
Low Power and Lossy Networks (LLNs), as it covers a wide scope of applications, such as building automation, industrial control, healthcare etc., has received considerable attention in recent years. In many LLNs applications, Point-to-point (P2P) communication is crucial, which extremely need to be supported by reliable and energy- efficient routing protocols. However, traditional routing protocols...
Due to the constraints of satellite platforms and Inter-Satellite Links (ISL), very limited ISLs can be equipped on the satellites, making the ISLs intermittently available. Meanwhile, the Ground-Satellite Links (GSL) are also intermittent due to the rotation between the constellation and the earth. Intermittent connectivity of both ISLs and GSLs makes the satellite constellation network a typical...
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