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G3-PLC has been defined for Smart Grid. The electrical grid is considered as a dynamic network because its performance are time-dependant. It is the reason why G3-PLC standard choose adapted technologies to perform communication is such harsh conditions. One of them concerns the packets routing. Data transmission needs to be performed hop-by-hop by using nodes as relays. LOADng routing protocol, initially...
RPL, the routing protocol proposed by IETF for IPv6/6LoWPAN Low Power and Lossy Networks has significant complexity. Another protocol called LOADng, a lightweight variant of AODV, emerges as an alternative solution. In this paper, we compare the performance of the two protocols in a Home Automation scenario with heterogenous traffic patterns including a mix of multipoint-to-point and point-to-multipoint...
Network routing is the mechanism chosen to send packets from any source to a destination in the network. The goal of any routing algorithm is to find an efficient path to send a packet to any destination taking into account all the obstacles that may be taking place in the network at any time. The focus of this paper is to provide an efficient solution to the routing problem by making use of reinforcement...
The problem of burst losses in OBS networks has an impact on the service quality perceived by end users. In order to guarantee certain level of Service Quality (QoS) in terms of burst losses, wavelength resources have to be dimensioned properly. In this paper, we address the problem of the Virtual Topology (VT) design that concerns the establishment of explicit routing paths and the allocation of...
Modified optimized link state routing (M-OLSR) has been developed for adaptability in wireless mesh networking (WMNs) scenarios and exhibits a much better scalability of traffic load and mobility in sparse and dense network. The protocol uses some refresh timers for periodic updates of link information and for subsequent topology maintenance. In this paper, we investigate the impact of configuring...
IP fast reroute techniques have been proposed for achieving fast failure recovery in just a few milliseconds. The basic idea of IP fast reroute is to reduce recovery time after failure by precomputing backup routes. A multiple routing configurations (MRC) algorithm has been proposed for obtaining IP fast reroute. MRC prepares backup configurations, which are used for finding a detour route after failure...
Proactive routing in MANETs induces high signaling overhead. Increasing the routing period size, while it reduces such an overhead, prevents to correctly track frequent changes in the topology and impacts the validity of routing as time goes farther from the start of the routing period. Routes' validity plays a central leveraging mission to enhance network performances as forwarding through incorrect...
Routing in mobile ad hoc networks (MANETs) is central to their proper functioning. Mobility in such networks makes the routing a real challenging task. Routes validity plays a central leveraging mission to enhance network performances. Forwarding through incorrect routes not only results in traffic wandering inside the network without ever being able to be delivered to their ultimate destinations...
In this paper we examine the behavior of ad hoc networks through simulations, using different routing protocols and various topologies. We examine the difference in performance, using a CBR application, with packets of different size through a variety of topologies, showing that the way nodes are placed in a network has an impact in networks performance. We show that the choice of routing protocol...
Service-oriented architecture (SOA) is the architecture of software or information system, as well as a concept of coarse-grained components and loosely coupled framework. But SOA is generally believed as a simple Web service integration. This paper deeply discusses some concepts on SOA, insists that SOA is a developing methodology rather than a specific technology. Moreover, the paper expatiates...
In this paper, we modify and extend epidemic routing used in intermittent networks such as delay tolerant networks (DTNs). In particular, we propose to include immunity-based information disseminated in the reverse direction once messages get delivered to their destination. There are many variants of epidemic routing that are intended to result in better resource utilization by reducing the number...
This paper discusses and evaluates the behaviour o fa DS-TE algorithm (DiffSev aware MPLS traffic Engineering) called PEMS, and a dynamic multipath routing algorithm for load balancing (LBWDP), applied on a huge topology that correspond to real network. To clarify network topologies and routing algorithms that are suitable for MPLS traffic engineering, we evaluate them from the viewpoint of network...
Most network operators have considered reducing Label Switched Routers (LSR) label spaces (i.e. the number of labels that can be used) as a means of simplifying management of underlaying Virtual Private Networks (VPNs) and, hence, reducing operational expenditure (OPEX). This letter discusses the problem of reducing the label spaces in Multiprotocol Label Switched (MPLS) networks using label merging...
A principal factor in sensor network design is energy efficiency. In this work, we propose to extend the lifetime of sensor networks using appropriate choice of sensor node distribution. The key idea of our scheme is to deploy more nodes in areas of extensive energy usage. Using this scheme of sensor node distribution, we use probabilistic angular routing to route data packets from the sensor nodes...
In this paper, we propose an adaptive pacing scheme at the link layer for IEEE 802.11 based multihop wireless networks. Our objective is to improve the performance of higher layer protocols without any modifications to them. Our adaptive pacing scheme estimates the four-hop transmission delay in the network path without incurring any additional overheads, and accordingly paces the packets to reduce...
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