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In wireless sensor networks??Cthe Media Access Control (MAC) Protocol is one of the key. Network Protocols designed to ensure the normal network communications. Compared with the traditional MAC Protocol, limited battery energy on sensors determines the sensor network MAC Protocol to be energy-efficient of the Primary design goal. This Paper Proposes a contention window adaptive MAC protocol based...
In order to hold the hardware cost is not the premise of improving the positioning accuracy of sensor nodes, the paper proposed the node locaLization research of the underground wireless sensor networks based on DV-Hop and Ant Colony Optimization, this method of non-ranging DV-Hop algorithm calculate the distance between unknown nodes and beacon nodes, with the method of triangular positioning algorithm...
In this paper an intelligent campus security tracking system (iCST) has been designed and implemented base on the RFID and ZigBee network. iCST reads the RFID tags data through FRID&ZigBee node, and then sends it to PC node by a custom wireless protocol on the ZigBee. PC node gives corresponding warning or hints by the result of matching master-slave RFID tag information. When the warning occurs,...
As Wireless Mesh Networks (WMNs) are newly emerging wireless technologies, they are designed to have huge potential for strengthening Internet deployment and access. However, they are far from mature for large-scale deployment in some applications due to the lack of the satisfactory guarantees on security. The main challenges exposed to the security of WMNs come from the facts of the shared nature...
Cognitive Radio (CR) has been considered as a promising concept for improving the utilization of limited radio spectrum resources for future wireless communications and mobile computing. As cognitive radio network (CRN) is a general wireless heterogeneous network, it is very essential for detecting the misbehaving or false nodes in the network. So in this paper we propose a trust aware model which...
One critical issue in wireless sensor networks is how to gather sensed information in an energy-efficient way since the energy is a scarce resource in a sensor node. In this paper, we propose an improved distributed clustering algorithm, which is called LEACH-W algorithm, In this algorithm, we extend low-energy adaptive clustering cluster-head selection algorithm by a factor with weight value deterministic...
One important critical issue in wireless sensor networks is how to gather sensed information in an energy efficient way since the energy is a scarce resource in a sensor node. Clustering technique has been proven to be an effective approach for data-gathering in wireless sensor networks. However, these data are characteristic of being heavily noisy, exhibiting temporal and spatial correlation. Data...
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