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On of the key advantages of Wireless Mesh Networks (WMNs) is their importance for providing cost-efficient broadband connectivity. There are issues for achieving the network connectivity and user coverage, which are related with the node placement problem. In this work, we consider the router node placement problem in WMNs and find the optimal distribution of router nodes in order to provide the best...
Wireless Mesh Networks (WMNs) are attracting a lot of attention from wireless network researchers. Node placement problems have been investigated for a long time in the optimization field due to numerous applications in location science. In our previous work, we evaluated WMN-GA system which is based on Genetic Algorithms (GAs) to find an optimal location assignment for mesh routers. In this paper,...
In this paper, we evaluate the performance of WMN-GA system for node placement problem in WMNs. For evaluation, we consider Normal and Uniform Distribution of mesh clients and different grid shapes. The simulation results shows that grid shape effects in the performance of WMN-GA. With the increasing of grid size, the mesh routers can not cover all mesh clients in the grid size and the performance...
Node placement problems have been long investigated in the optimization field due to numerous applications in location science (facility location, logistics, services, etc) and classification (clustering). In this paper, we propose and implement a system based on Hill Climbing algorithm, called WMN-HC for mesh router node placement in WMNs. We evaluate the performance of the proposed system by different...
Wireless Mesh Networks (WMNs) are currently attracting a lot of attention from wireless research and technology community due to their importance for providing cost-efficient broadband wireless connectivity. Issues for achieving the network connectivity and user coverage are related with the node placement problem. In this paper, we evaluate the performance of WMN-GA system for node placement problem...
Wireless Mesh Networks (WMNs) have become an important networking infrastructure for providing cost-efficient broadband wireless connectivity. WMNs are showing their applicability in deployment of medical, transport and surveillance applications in urban areas, metropolitan, neighboring communities and municipal area networks. In this paper, we deal with connectivity and coverage problem of WMN. Because...
A set of wireless mobile terminals, which cooperate by routing packets to each other creates a Mobile Ad-hoc Network (MANET). MANETs are continuing to grow their interest in research environment and they are attracting attention for their potential use in several fields such as collaborative computing and disaster recovery environments. Considering mobility of the terminals, the topology changes rapidly...
In this paper, we deal with the impact of the population size and number of generations on the performance of a dense WMN. The network is compound of 8 mesh routers and 96 mesh clients. We evaluate the performance considering giant component, number of covered users and the total execution time of GA. The simulation results show that the increase of the population size or the increase of the number...
Wireless Mesh Networks (WMNs) are currently attracting a lot of attention due to their ability to provide cost-efficient broadband wireless connectivity. In this paper, we evaluate the performance of a WMN by simulations considering packet delivery ratio (PDR), throughput and delay. For simulations, we used ns-3 simulator and Hybrid Wireless Mesh Protocol (HWMP). We evaluate the performance of the...
The Wireless Sensor Networks (WSNs) have a wide range of applications such as target detection and tracking, environmental monitoring, and tactical systems. However, lower sensing ranges result in dense networks, which brings the necessity to achieve an efficient medium access protocol subject to power constraints. Various MAC protocols with different objectives were proposed for wireless sensor networks...
Wireless Mesh Networks (WMNs) are important networking infrastructure for providing cost-efficient broadband wireless connectivity. Mesh router node placement is important to achieve network connectivity and coverage in such networks. In this paper, we deal with the effect of changes in population size and number of generations for node placement problem in WMNs. We consider two population sizes 8...
In Wireless Mesh Networks (WMNs), the performance of the network is affected by the location of mesh nodes. The placement of mesh nodes is an important design issue in deploying such networks. For a given grid size and a given number of mesh nodes, we use Genetic Algorithms (GAs) to find where to position the mesh nodes in order to maximize the coverage and the connectivity of the network. In this...
The Wireless Sensor Networks (WSNs) have a wide range of applications such as target detection and tracking, environmental monitoring, and tactical systems. However, lower sensing ranges result in dense networks, which brings the necessity to achieve an efficient medium access protocol subject to power constraints. Various MAC protocols with different objectives were proposed for wireless sensor networks...
In this paper, we use WMN-GA system for node placement problem in WMNs. For a given grid size and a given number of mesh nodes, our WMN-GA system use Genetic Algorithms (GAs) to find where to position the mesh nodes in order to maximize the coverage and the connectivity of the network. We evaluate and compare the performance of Weibull and Exponential distributions considering giant component and...
The absence of any fixed infrastructure and mobility of Mobile Ad-hoc Networks (MANETs) make them attractive for usage in time-critical applications and collaborative computing. Recently MANETs are also used in real-time communications such as audio phone calls. In this paper, we investigate the performance of an outdoor stairs MANET test bed for different scenarios considering throughput and packet...
Wireless Mesh Networks (WMNs) distinguish for they low cost nature that makes them very attractive for providing wireless Internet connectivity. Such infrastructures can be used to deploy community networks, metropolitan area networks, municipal and corporative networks, and to support applications for urban areas, medical, transport and surveillance systems. The main issues in WMNs are achievement...
With the emergence of several new networking paradigms, optimization modeling and resolution turns out to be crucial to achieve optimized performance networks. One such networking paradigm that requires resolution of optimization problems is Wireless Mesh Networks (WMNs). In this paper, we deal with the effects of population size in GA for node placement problem in WMNs. We evaluate the performance...
Wireless sensor networks are appealing to researchers due to their wide range of application potential in areas such as target detection and tracking, environmental monitoring, and tactical systems. However, lower sensing ranges result in dense networks, which bring the necessity to achieve an effcient medium access protocl subject to power constraints. Various MAC protocols with different objectives...
A set of wireless mobile terminals, which cooperate by routing packets to each other create a Mobile Ad hoc Network (MANET). MANETs are attracting attention for their potential use in several fields such as collaborative computing and disaster recovery environments. Considering mobility of the terminals, the routes change dynamically and routing becomes a key process for operation of MANETs. Until...
In Mobile Ad-hoc Networks (MANETs) the absence of any fixed infrastructure and mobility brings attractiveness for its usage in time-critical applications and collaborative computing. In this paper, we investigate the performance of our MANET testbed in mixed environment considering horizontal and vertical topologies. We analyze the behavior of Optimized Link State Routing (OLSR) protocol and consider...
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