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With the fast development of wireless technologies, Wireless Mesh Networks (WMNs) are becoming an important networking infrastructure due to their low cost and increased high speed wireless Internet connectivity. In our previous work, we implemented a simulation system based on Particle Swam Optimization for solving node placement problem in wireless mesh networks, called WMN-PSO. In this paper, we...
A group of wireless devices with the ability to sense physical events (sensors) or to perform relatively complicated actions (actors), is referred to as Wireless Sensor and Actor Network (WSAN). In WSANs, sensors gather information about the physical events, while actors perform appropriate actions upon the environment, based on the sensed data shared by sensors. In order to provide effective sensing...
In this paper, we deal with connectivity and coverage problem in Wireless Mesh Networks (WMNs). We used Friedman test to compare Genetic Algorithm (GA) and Tabu Search (TS). We found out that GA and TS have difference in their performance. Then, we used the implemented systems WMN-GA and WMN-TS to evaluate and compare the performance of the system for different distributions of mesh clients in terms...
A Mobile Ad hoc Network (MANET) is a set of mobile wireless devices, which communicate by forwarding packets for each other. These autonomous devices act as routers and as end nodes as well. The communication from one node to another can happen in many routes with different number of hops. Because of mobility these routes change dynamically. Recent application of MANETs have strong Quality of Service...
Wireless Mesh Networks (WMNs) are an important networking infrastructure for providing cost-efficient broadband wireless connectivity to a group of users. WMNs are increasingly being used in urban, metropolitan and municipal area networks for deployment of medical, transport, surveillance systems, etc. The performance and operability of WMNs largely depends on placement of mesh routers nodes in the...
Node placement problems have been long investigated in the optimization field due to numerous applications in location science and classification. Facility location problems are showing their usefulness to communication networks, and more especially from Wireless Mesh Networks (WMNs)field. Recently, such problems are showing their usefulness to communication networks, where facilities could be servers...
Finding an optimal solution is computationally hard for most combinatorial optimization problems. Therefore the use of heuristics methods aims at finding, if not optimal, near optimal solutions in reasonable amount of computation time. Due to lack of knowledge about the landscape of fitness function, searching the solution space by heuristic methods becomes very challenging. One can search the solution...
Computing efficiently a planning of incoming jobs to available machines in the Grid system is a main requirement for optimized system performance. One version of the problem is that of independent batch scheduling in which jobs are assumed independent and are scheduled in batches aiming to minimize the make span and flow time. Given the hardness of the problem, heuristics are used to find high quality...
Wireless Mesh Networks (WMNs) are currently attracting a lot of attention from wireless research and technology community due to their importance as means for providing cost-efficient broadband wireless connectivity. WMNs are based on mesh topology, in which every node is connected to one or more nodes, enabling thus the information transmission in more than one path. In this paper, we deal with the...
The hybridization of heuristics methods has been proposed in the meta-heuristics research community as a way to overcome limitations of single meta-heuristics. Although a priori there is no guarantee that the resulting hybrid heuristic would outperform stand alone heuristics, in general better results can be found for classes of instances of the optimization problem under study. One promising family...
In Wireless Mesh Networks (WMNs) the meshing architecture, consisting of a grid of mesh routers, provides connectivity services to different mesh client nodes. The good performance and operability of WMNs largely depends on placement of mesh routers nodes in the geographical area to achieve network connectivity and stability. Thus, finding optimal or near-optimal mesh router nodes placement is crucial...
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