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A wireless sensor network consists of many energy-autonomous micro-sensors distributed throughout an area of interest. Each node has a limited energy supply and generates information that needs to be communicated to a sink node. To reduce costs, the data sent via intermediate sensors to a sink, are often aggregated. The existing energy-efficient approaches to in-network aggregation in sensor networks...
We propose a network infrastructure, called wise mobile sensor network (WiMoS), for supporting mobile WSNs in wide area. WiMoS has been developed to integrate conventional WSN systems and provide efficient location based services (LBSs), and has been designed by the open structure which has standard interfaces to support machine to machine (M2M) and internet of things (IoT). This paper introduces...
This paper presents the Page Rank Routing Algorithm Method (PR-RAM), which is the Ad-hoc wireless networks routing protocol using Page Rank algorithm. Page Rank is the link analysis algorithm used by the Google internet engine that assigns a numerical weighting to each element of World Wide Web (WWW) with the purpose of measuring its relative importance within the WWW. If any web page has a higher...
This paper solves the hierarchical tree routing's inefficiency problem by using a neighbor node table, defined by the Zigbee standard, the Zigbee tree architecture, and an address allocation mechanism. This method selects a relay node through hierarchical tree routing, but if it finds a neighbor node, one of the destination family group, which reduces the expense of routing; then, this method selects...
By the wide range of researches on Wireless Sensor Networks (WSNs), various routing schemes with diverse criterion have been introduced. However, techniques that consider the characteristics of the sensed data as definitive parameters in determining the behavior of WSNs are extremely rare. In most monitoring applications, sampled data are not equal in their importance. Unexpected data is more likely...
ZigBee is a standard that is suitable for wireless sensor networks. In ZigBee, sensor nodes can be connected by a tree topology called distributed address assignment mechanism (DAAM). It has the merits as follows: 1) it is easy to implement; 2) it simplifies the task of routing. It restricts the number of children and the depth of the network by setting a topological parameter set, which is defined...
In recent years, one of alternatives for constructing RFID networks that provide mobile services is using wireless sensor networks (WSN) to enhance network capacity,utility and scalability. Due to absence of compatible reader anti-collision control and channel capture phenomenon, the medium access control protocols as used in the RFID networks lead to reader collision and starvation problem. In this...
Radio frequency identification (RFID) is a promising technology for ubiquitous computing. To improve its function and capability, it is necessary to integrate RFID with wireless sensor networks (WSNs). Although organized well, the reader collision problem is still one of the critical problems in these networks. In this paper, we propose a collision avoidance protocol called power-aware location-based...
A large number of RFID system support location based service. This RFID Location System based on the general purposed geographic location code supports monitoring of the RFID tags in real time effectively. To identify the RFID tags, we allocate the general purposed geographic location code for each region. Throughout this system, the distribution and services related with RFID can easily manage the...
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