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Localization awareness is a fundamental requirement in many Internet of Things (IoT) and other wireless sensor applications. The information transmitted by an individual entity or node is of limited use without the knowledge of its location. Research in this area is mostly geared towards multi-hop range-free localization algorithm as that only utilizes connectivity (neighbors) information. This work...
This paper presents a multihop range-free localization algorithm to enhance the localization accuracy in anisotropic networks with a small number of anchors. We derive potential locations of a normal node and corresponding probabilities in terms of the average one-hop internodal distance, the average hop progress and the hop counts to anchors. A novel distance estimation based on the potential locations...
Broadcasting in Mobile Ad Hoc Networks is a fundamental process for nodes to maintain network connectivity and stability, providing support to management procedures in order to exchange control information and aiding routing protocols to keep up to date records of routes to all possible destinations. The most commonly used broadcast scheme in MANETs is Simple Flooding (SF) due to its simplicity. SF...
Mobile Ad Hoc Network is a Network composed of mobile nodes that topology is constantly changing. If in the routing in these networks, the nodes that are selected as route nodes are not stable and have a high mobility, data transmission route is broken quickly. Therefore, the method can be considered in the routing that from the nodes are between source and destination, nodes that are more stable,...
The topology of a delay tolerant network (DTN) over time has been modeled by a space-time graph. However, the mobility of nodes, such as buses, may not be completely predictable due to factors such as traffic load, road condition, the number of passengers getting on and off the buses, and the operations of traffic lights. In this paper, we adapt the space-time graph by augmenting each horizontal edge...
Low-cost wireless routers are changing the way people connect to the Internet. They are also very cheap, albeit quite limited, Linux boxes. These attributes make them ideal candidates for wireless mesh routers. This paper presents a minimally invasive mechanism for redundant multipath routing in kernel-space to achieve high reliability with high throughput in a mesh network. This service is essential...
In this paper, we introduce and evaluate ScaleMesh, a scalable miniaturized dual-radio wireless mesh testbed based on IEEE 802.11b/g technology- ScaleMesh can emulate large-scale mesh networks within a miniaturized experimentation area by adaptively shrinking the transmission range of mesh nodes by means of variable signal attenuators. To this end, we derive a theoretical formula for approximating...
Proactive routing protocols are mainly used in mobile networks since they are capable to distribute recent information very quickly. However, even reactive and hybrid protocols can be modified to achieve high end-to-end reliability in mobile networks while not increasing the end-to-end delay in a significant way. In this paper the performance of ad-hoc on-demand distance vector (AODV), optimized link...
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