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Recent advances of Wireless Sensor Networks technologies has witnessed the dynamic changes of our daily life. With the sensors deployed everywhere, people may benefit from various services (weather service, traffic information, environment sensing, etc.) based on these sensor networks. However, how to collect/manage/process those various sensor dates from heterogeneous sensor networks still remain...
Wireless sensor networks have recently emerged as one of the hottest research fields. Sensor coverage, in general answers the question about the quality of service (QoS) that can be provided by a particular sensor network. This paper presents a density mobility scheme (DMS) which can improve the system coverage by moving the nodes to its nearby coverage hole it detects. In the DMS, a mobile sensor...
Energy efficiency and low message delay are the basic QoS requirements for data collection in vehicular ad-hoc and sensor networks. In order to achieve these requirements, many solutions have been developed by attaching collectors/sinks to vehicle or aircraft and moving them either randomly or along a predefined route. This paper presents an adaptive data gathering protocol (ADG) that employs multiple...
We address the problem of identifying misbehaving nodes that (selectively) drop packets, in order to degrade the network performance. Such nodes may agree to forward packets by participating in the route discovery process, but refuse to do so once the packets have been received. We propose a reactive approach where the source initiates an audit process if a significant performance degradation is observed...
The e-SENSE project has the vision to enable new context-aware applications and services in beyond 3G mobile communication systems by providing the technology required to capture the context surrounding the service users and service-related objects through wireless sensor networks. This paper introduces a flexible protocol stack architecture for wireless sensor networks, which allows the incorporation...
A principal factor in sensor network design is energy efficiency. In this work, we propose to extend the lifetime of sensor networks using appropriate choice of sensor node distribution. The key idea of our scheme is to deploy more nodes in areas of extensive energy usage. Using this scheme of sensor node distribution, we use probabilistic angular routing to route data packets from the sensor nodes...
This paper proposes a fast forward medium access control protocol (FFMAC) for quality-of-service (QoS) guarantee in multihop IEEE 802.11s wireless mesh networks with multiple channels. To the best of our knowledge, the proposed protocol is the first one which considers the multihop and multichannel issues simultaneously. It provides higher priority for real-time applications, while remaining the distributed...
This paper explores the attributes, layering models and objective functions in cross layer designs for mobile ad hoc wireless networks by taking all the statistical characteristics and constraints from the physical (PHY) layer, media access control (MAC) layer and network (NET) layer into consideration. This paper reviews the entire network optimization across all the PHY/MAC/NET layers. At the PHY...
The following topics are dealt with: flow control; flow analysis; system architecture; network systems; distributed multimedia 3D applications; Internet; pervasive computing; mobile computing; embedded systems; protocols; routing; search; allocation; verification; access control; work flow; P2P; QoS; VOIP; ontologies; data mining; IPv6; ad hoc networks; and sensor networks
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