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ZigBee wireless networks have been extensively researched on recently. For the purpose of making ZigBee walk out of laboratory and becoming more practical in automatic meter reading (AMR) system, we make some favorable improvements both on the hardware and the software of ZigBee technology. In hardware aspect, we amplify transmit power and enhance receiver sensitivity in order to establish point-to-point...
This paper presents a novel address assignment algorithm (Adaptive Dynamic Address Redistribution ADAR) and tree-based routing protocol for large-scale uneven Wireless sensor networks (WSNs). The ADAR algorithm can make 16-bit address space used effectively and it also can solve the problem that nodes which want to access the WSNs can not be assigned addresses because of the father node running out...
Sensor node has node ID for identity on sensor network. ID assignment is a principle technique for hierarchical routing. However, as conventional hierarchical routing methods do not consider end-nodes, those only can support a simple path search. Therefore, those are not adequate in dynamic sensor network environments. In this paper, we propose ComHRP (complement HRP) that inherits advantages of conventional...
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