Papers by Essam H Houssein
Area bounds of hierarchical graphs straightline grid drawing
2015 World Congress on Information Technology and Computer Applications (WCITCA), 2015
A mobile ad hoc network (MANET) is a wireless network that uses multi-hop peer to peer routing. A... more A mobile ad hoc network (MANET) is a wireless network that uses multi-hop peer to peer routing. A user can move anytime in an ad hoc scenario and, as a result, such a network needs to have routing protocols which can adopt dynamically changing topology. To accomplish this, a number of ad hoc routing protocols have been proposed and implemented such as, Ad hoc On-Demand Distance Vector routing (AODV), Fisheye State Routing (FSR) and Location-Aided Routing (LAR). This paper compares the major characteristics of these protocols such as, routing messages overhead, throughput and end to end delay using a parallel discrete event-driven simulator, GloMoSim. The experimental results show that FSR protocol has low control overhead compared with AODV and LAR. Regarding the throughput, AODV has a high throughput compared with the other considered protocols. Considering the end to end delay, LAR protocol shows better performance over FSR and AODV protocols. Keywords: Mobile Ad hoc networks (MAN...
An ad hoc mobile network is a collection of mobile nodes that are dynamically and arbitrarily loc... more An ad hoc mobile network is a collection of mobile nodes that are dynamically and arbitrarily located in such a manner that the interconnections between nodes are capable of changing on a continual basis. Routing in MANET is extremely challenging because of MANETs dynamic features, its limited bandwidth and power energy. The routing protocol is used to discover routes between nodes. Routing is a challenging task in ad hoc network due to mobility of nodes that frequently changes network topology. Nature-inspired algorithms (swarm intelligence) such as ant colony optimization (ACO) algorithms have shown to be a good technique for developing routing algorithms for MANETs. In this paper, we propose a new routing algorithm for MANETs called Ant-HRP which based on ACO, proactive and reactive routing protocol capability and is simulated on NS2. Results indicate that Ant-HRP effectively improve the connectivity, packet delivery ratio and reduce the end-to-end delay as compared with the Ant Net, AODV and DSDV routing protocols.
A mobile ad hoc network (MANET) is a collection of wireless mobile nodes communicating with each ... more A mobile ad hoc network (MANET) is a collection of wireless mobile nodes communicating with each other using multi-hop wireless links without any existing network infrastructure or centralized administration. One of the main challenges MANET is the design of robust routing algorithms that adapt to the frequent and randomly changing network topology. Nature-inspired algorithms (swarm intelligence) such as ant colony optimization (ACO) algorithms have shown to be a good technique for developing routing algorithms for MANETs. In this paper, we propose a new routing protocol for MANETs called Ant-Hoc which based on ACO, proactive and reactive routing protocol capability. Using the simulation model with a dynamic network size and an invariable pause time which should be zero under weakest case because a longer pause time of the node may be insignificant for MANET with frequently and fast moving nodes. Furthermore, based on the QoS, routing load and the connectivity, this paper systematically discuses the performance evaluation and comparison of Ant-Hoc and three typical routing protocols of MANETs with the different simulation model and metrics. Results indicate that Ant-Hoc effectively improve the connectivity, packet delivery ratio and reduce the end-to-end delay as compared with the AntNet, AODV and DSDV routing protocols.
A mobile ad hoc networks (MANETs) is a dynamic mobile wireless network that can be formed without... more A mobile ad hoc networks (MANETs) is a dynamic mobile wireless network that can be formed without the need for any pre-existing wired or wireless infrastructure. One of the main challenges in an ad hoc network is the design of robust routing algorithms that adapt to the frequent and randomly changing network topology. This paper proposes a novel routing scheme for MANETs, which adapts the AntNet protocol with the blocking-expanding Ring Search and Local Retransmission technique (AntNet-RSLR). According to this protocol, a group of mobile agents build paths between pair of nodes, exploring the network concurrently and exchanging obtained information to update the routing tables that decreases both of the routing message overhead and the average end to end delay less than the well known AntNet, AODV and DSR routing protocols. This led to increase the throughput more than AntNet, AODV and DSR routing protocols. AntNet-RSLR has been implemented using NS-2 simulator.
Mobile ad hoc networks (MANETs) are characterized by multi-hop wireless connectivity, frequently ... more Mobile ad hoc networks (MANETs) are characterized by multi-hop wireless connectivity, frequently changing network topology and the need for efficient dynamic routing protocols plays an important role. A variety of routing protocols targeted specifically at this environment have been developed and some performance simulations are made on numbers of routing protocols like Ad hoc On-Demand Distance Vector Routing (AODV), Dynamic Source Routing (DSR) and Location-Aided Routing (LAR). To the best of our knowledge, no published work is available in the literature, which compares as many criteria as we have done to evaluate the performance of the considered routing protocols. In this paper we perform extensive simulations using GloMoSim simulator considering 18 performance metrics. To determine the impact of network size on the performance of these protocols we considered two different scenarios, namely, 100 and 200 nodes, with rectangular area sizes 1500 · 1000 and 2000 · 1500 m 2 , respectively.
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Papers by Essam H Houssein