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Mobile ad-hoc network (MANET) is an energy constraint multi-hop network and its nodes have routing capability with limited battery power. In such a network, establishing a correct and efficient route is a crucial design issue. But a more challenging goal is to provide an energy-efficient multi-hop route between source-destination pair. Thus, the routing protocols should setup an energy-efficient route...
In a mobile ad hoc network, efficient routing, resource allocation, and energy management can be achieved through clustering of mobile nodes into local groups. In this paper we propose a clustering scheme that allows self-configuration and adaptation of the network, prolonging its lifetime by distributing energy consumption among clusters. A combined weighted metric approach is used to select cluster-head...
Target Association Rules (TARs) is a recent proposed behavioral patterns that captures the temporal correlations among a set of monitored objects. However, preparing the data needed to generate these rules is a costly process. In this paper, we propose a new energy-efficient data preparation mechanism, named Fused-Schedule-Buffer based technique, to prepare the data needed for generating TARs. Several...
Wireless Sensor Networks applications are attracting more and more research, especially in energy saving techniques which is the focal point of most researchers in this area. One of the most interesting applications of Wireless Sensor Networks is the Object Tracking Sensor Networks (OTSNs) which are used mainly to track certain objects in a monitored area and to report their location to the application's...
In the last decade, both mobile and multimedia communications have experienced unequaled rapid growth and commercial success. However, transmitting multimedia flows over wireless Ad hoc network remains an extremely challenging issue due to the limited battery lifetime of the wireless nodes. The focus, of this paper, is to design a new efficient protocol optimizing the energy consumption when transmitting...
In a wireless sensor network with relaying capability, intermediate relay nodes are with limited energy budget. To maximize lifetime of relay nodes, selective relay strategies, requiring full channel state information (CSI), are used to utilizes the best relaying channel. Pilot overhead on relay nodes lifetime is reduced by assuming pilot transmission from destination instead of relay nodes. This...
Constructing sensing barriers using wireless sensor networks has important applications in military operations and homeland security. The goal of forming a sensing barrier is to detect intruders attempting to cross the network. Early studies often assume that sensors remain static once deployed. We note that barrier gaps may occur at deployment if sensors are deployed at random. Barrier gaps may also...
Existing studies on the design of routing protocols for wireless ad hoc networks mainly focused on energy efficiency. However, in many real-time applications such as target tracking and bush fire surveillance, latency is an important concern, and little attention has been paid to it in the design of routing protocols for such applications to meet the specified Quality of Service (QoS) requirements...
Aiming at the coverage problem, a new coverage algorithm is proposed based on residual energy of sensors in this paper. In the algorithm, it is unnecessary for sensors to know its geographic information. By exchanging some related information with its neighbors, sensors judge its suitable status (active or sleep) according to energy. The algorithm can save sensor energy and extend the time of sensor...
Reliable delivery of data is a classical design goal for reliability-oriented collection routing protocols for ad hoc wireless sensor networks (WSNs). Guaranteed packet delivery performance can be ensured by careful selection of error free links, quick recovery from packet losses, and avoidance of overloaded relay sensor nodes. Due to limited resources of individual senor nodes, there is usually a...
A location independent coverage control algorithm LICA is proposed in this paper. LICA adopts the hierarchical clustering idea. The neighboring nodes exchange the information and find out redundancy node in order to turn off their communications equipment. The simulation and analysis study demonstrate that the LICA not only provides the high quality of area coverage and good scalability, but also...
IEEE 802.15.4 is the emerging next generation wireless standard designed for low-rate wireless personal area networks (LR-WPAN), which suit wireless sensor networks applications. It attempts to provide a low cost, low power and short range wireless networking. The QoS is more challenging in heterogeneous wireless sensors networks, where a diverse mixture of sensors for monitoring temperature, pressure,...
Broadcasting in mobile ad hoc networks (MANETs) usually involve fixed transmission power that covers, for example an area within 250 meters. However, it is often unnecessary to broadcast using fixed power because a node that needs to be covered may just be 100 meters away. By reducing the transmission power enough to cover this node, energy expenditure would be reduced, thus, prolonging the lifetime...
In this paper, we seek the improvement of a newly developed Static Channel Width Routeless Routing (SCWRR) protocol which uses a self-determined Geographical Forwarding MASNET. Even though our previously obtained results are very competitive with peer protocols, we will strive to explore all venues in order to enhance protocol efficiency, one of such venues is to vary the source-destination channel...
In this paper, we propose an effective filtering method for skyline queries in mobile ad hoc networks (MANETs). Skyline query processing is important since skyline objects show interesting points from a large data set according to multiple criteria. Most skyline researches about wireless ad hoc network focus on optimizing the energy consumption due to the limited resource. But, most existing researches...
A mobile ad-hoc network(MANET) is a collection of mobile nodes dynamically forming a temporary network without any fixed infrastructure. The topology of MANETs changes dynamically causing frequent node failures and network partitions. Sharing of information in such networks is a challenging task. MANETs and peer-to-peer networks share several common characteristics such as self-configuration, decentralized...
ATIM (Ad hoc traffic Indication Message) window can be used effectively to enhance the potential energy savings at static sensors nodes during data dissemination in wireless sensor networks. Doze and awake are two states a sensor node may be in during ATIM window. We consider a traditional wireless sensor network system consisting of resource-rich static sink and resource-constrained multiple static...
Peer-to-peer networks are a popular means of obtaining large files. Network coding has been shown as an efficient means of sharing large files in a P2P network. With network coding, all file blocks have the same relative importance. This paper presents Deluge, which uses network coding to share large files in a P2P overlay running on a MANET. Peers request file blocks from multiple server nodes and...
Topology control with per-node transmission power adjustment is an effective way to extend network lifetime. However, due to the commonly used assumption of homogeneous wireless networks with uniform maximal transmission power, most topology control algorithms suffer from performance degradations in practical applications where physical characteristics of each node may be different. Hence, it is valuable...
We illustrate the effective use of ATIM (ad hoc traffic indication message) window in static sensors to obtain potential energy savings for sensors during data dissemination in wireless sensor networks. The network consists of resource-rich mobile sink node and resource-constrained sensor nodes forming a square grid. Sink may be multihop away from the sensor nodes and in order to collect the data,...
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