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A GPS-based wireless ad hoc network is proposed for marine monitoring, search, and rescue applications in Vietnam. The network routing protocol and algorithm are evaluated using Network Simulator 2 software. The results indicate a success rate of packages transmission higher than 85% and show the great potential of the proposed concept.
Nodes in Wireless Sensor Networks are typically considered to be energy constrained, small in size, with little processing power and limited battery energy storage. In order to increase performance of sensor nodes in a network, either the energy of the nodes must be increased or its operational efficiency must be increased. A key operational factor is the routing protocol. Augmentation of the energy...
Satellite payloads and wireless cell/broadband towers are being designed and deployed to simultaneously provide backbone network connectivity for hundreds to thousands of end-user networks. Hence, large wireless "hub and spoke" networks are created. In order to allow user-networks to utilize their own IP address space, hub nodes must distribute user routes throughout the hub and spoke network...
Mobile ad hoc network is a collection of mobile nodes communicating through wireless channels without any existing network infrastructure or centralized administration. Due of the limited transmission range of wireless network, multiple "hops" are needed to exchange data across the network. In order to facilitate communication within the network, a routing protocol is used to discover routes...
Sensor nodes are often organized into clusters for efficiency and scalability purposes. Every sensor cluster is managed by a cluster leader during the network operation such as routing and data aggregation. Since managing a cluster consumes substantial energy, the cluster leader needs to be re-elected from time to time for load balancing. In hostile environments, it is critical to ensure the security...
When developing or evaluating network routing protocols for ad hoc or disrupted networks, it is critically important to evaluate the protocol with the mobility model that most closely matches the expected real-world scenario. Unfortunately, there are no synthetic mobility models readily available for complex warfare. By using an agent based simulation coupled with game AI, we have produced a mobility...
Data communication in wireless sensor networks (WSNs) exhibits distinctive characteristics. Routing in WSNs still relies on simple variations of traditional distance vector or link state based protocols, thus suffering low throughput and less robustness. Drawing intuitions from the Brownian motions where localized momentum exchanges enable global energy diffusion, we propose an innovative routing...
Conventionally, the majority of network routing protocols assume that every network terminal or link forwards data for others without any deviation. However, this may not be true when the terminals or links are owned by individual selfish users, who always tries to maximize their own benefits instead of faithfully following a prescribed protocol. In this paper, we propose a new routing protocol, called...
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