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This paper studies the opportunistic routing (OR) in unmanned aerial vehicle (UAV) assisted wireless sensor networks (WSNs). We consider the scenario where a UAV collects data from randomly deployed mobile sensors that are moving with different velocities along a predefined route. Due to the dynamic topology, mobile sensors have different opportunities to communicate with the UAV. This paper proposes...
Mobile Opportunistic Network (MON) is a kind of Delay Tolerant Network (DTN) in which nodes are mobile with social characteristics. Users in such network carry data, move and forward it to others for information dissemination. There are already much work done on the routing problem in MON to achieve higher performance, they usually just focus on the physical contact among nodes and their social attributes,...
In this paper, we first present a heterogeneous theoretical framework for DTNs where the contact between nodes is based on independent differently distributed assumption. Moreover, the message forwarding process follows a Gamma Distribution. Then, we propose a new spray routing scheme based on this framework. Moreover, we compare our routing protocol with traditional spray routing (TSR) protocols...
Extensive researches are going on in the area of wireless ad hoc networks focuses on a wide range. Among them, mounting efficient data broadcasting algorithms is considered to be an important research focus because the broadcast method is broadly used in a number of routing protocols and, since the devices in these networks usually have a limited power supply, simply adopting the broadcast methods...
In a wireless sensor network with mobile sinks, the maintenance of efficient data delivery structure often brings a large amount of control overhead, which may offset the benefit of introducing mobile sinks. In this paper, we propose a multi-stage data routing protocol (called MLRP) to address this problem. To reduce the protocol overhead, MLRP integrates layered Voronoi scoping and dynamic anchor...
This paper presents a cross-platform solution of smartphone-based mobile sink for wireless sensor networks, named uSink. With a cross-platform SD card, named uSD card, any smartphone with SD interface can be empowered with the capability to communicate with wireless sensor nodes. Furthermore, a middleware on mobile phone, named uSinkWare, is also designed to provide a typical mobile sink's functionalities,...
In this paper we consider the problem of routing in delay tolerant networks (DTNs). DTNs attempt to route network messages via intermittently connected nodes. Routing in such environments is difficult because there is no guarantee that a fully connected path between source and destination exists at any time and transfer opportunities between nodes are of limited duration. We propose a protocol for...
Routing in mobile ad hoc networks (MANETs) is central to their proper functioning. Network dynamics make the routing a real challenging task. Although a host of studies has been reported in the literature evaluating the performance of proposed routing algorithms, a deeper insight reveals some residual malfunctioning: wall effects, looping and inconsistency. In this paper, we first unleash the cover...
Opportunistic Network is a special kind of mobile Ad Hoc network in which communication nodes are sparsely distributed in the network area and the communicating opportunities between the nodes are created by the moving and encounter of the nodes. Achieving reliable data transmission in Opportunistic Networks is a great challenging task because there is no contemporaneous path between source and destination...
Delay tolerant networking (DTN) is a new store-and-forward architecture and protocol suite for the networks which is intermittent connectivity. Depending on the nodes ability of store and forward, the messages are delivered to their destination with the proper choice of routing protocol by nodes' mobility. In order to successful delivery, many routing protocols use multiply copies methods. Although...
Proactive routing in MANETs induces high signaling overhead. Increasing the routing period size, while it reduces such an overhead, prevents to correctly track frequent changes in the topology and impacts the validity of routing as time goes farther from the start of the routing period. Routes' validity plays a central leveraging mission to enhance network performances as forwarding through incorrect...
Sensors are now attached to a lot of mobile objects such as animals and vehicles to collect data. This forms intermittently connected mobile sensor network due to weak communication power and nodal mobility, in which conventional routing protocols in wireless sensor network don't work. In this paper, we propose a data harvesting scheme for intermittently connected mobile sensor network. This approach...
In this paper, meeting position aware routing (MPAR) is proposed for query-based mobile enabled wireless sensor network (mWSN). We consider mWSNs with dense sensor nodes deployed in the sensing field. A mobile sink (MS) moving through the sensing field with random speed queries a specific area or a point of interest for information from physical world. Queried data over a area is aggregated to a source...
Location service provides position of mobile destination to source node so that position based routing can be applied. Several quorum-based location services have been proposed. These location service protocols suffer from complex structure with high overhead, or host location foreknowledge, and difficulty in quorum construction. To overcome those deficiencies, we propose a novel quorum-based location...
In this paper, we design a destination-driven on-demand multicast routing protocol for wireless ad hoc networks. The design objective is to improve the multicast forwarding efficiency. To achieve this goal, the path to reach a multicast destination is biased towards those paths passing through another multicast destination. If multiple such choices are available, the one leading to the least extra...
Several geographic routing protocols using location information have already been proposed for ad hoc networks to improve performance of ad hoc routing protocols, such as Location-Aided Routing (LAR) protocols. Through using location information, LAR protocols restrict the search for a new route to a smaller Request Zone of the ad hoc network. This results in a significant reduction in the number...
Due to inherent dynamic nature of Mobile Ad-hoc Networks (MANETs), real time communication and Quality of Service (QoS) is very difficult to achieve. For achieving QoS and real time transmission of audio video data, location information of node can help to achieve an efficient, robust routing and optimal communication link between source and destination. In this paper we are inspired by the usage...
An application scenario embracing the area of Intelligent Transportation Systems (ITS) is studied in this paper. The infrastructure of the application scenario is wireless sensor networks with mobile sinks. The WSN is query-based and with multi-hop transmission for data sensing. The application-specific network architecture was introduced and exploited. The detailed routing algorithm as well as its...
A few of existing multi-path routing protocols also address security issues. In this paper, a concept of plausible-route set is presented. Based on this notion, a definition of security for multiple node-disjoint paths secure source routing protocol is proposed and developed.
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