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This paper proposes an improved Ad-hoc On-Demand Distance Vector (AODV) routing protocol based on node-grade to reduce the energy consumption of nodes in wireless sensor networks. The improved AODV called Grade-AODV (G-AODV) assigns a grade to each node according to the hop distance of the node to the sink node. The lower grade a node has, the closer it is to the sink. Each node is restricted to receive...
In this paper, we propose a method to save energy consumption for the rejoin procedure of ZigBee networks. By skipping the active scan process, a rejoining node and its neighbors are able to save a large amount of energy. In addition, the rejoining node chooses the suitable potential parent by reserving and utilizing original neighbor table. This method is capable of reducing the number of rejoin...
Zigbee technology is here to stay. With current market trends it is to be understood that it will play a vital and major role in low rate wireless personal area networks. Zigbee networks facilitate numerous applications such as consumer electronics, home area networks, health care monitoring and environmental monitoring. Effective routing in wireless sensor networks is critical to conserve energy...
The energy-efficiency usage is relative to each layer of wireless sensor networks. In order to improve the ZigBee mesh routing protocol for energy-efficiency usage, we propose a routing algorithm combining AODVjr with the node residual energy. To reduce the energy consumption of bottleneck nodes and extend network lifetime, the improved routing algorithm aims to build a new balancing method between...
To discover routes, the nodes in the ZigBee-based sensor network use a simplified AODV (ad-hoc on-demand distance vector). The AODV floods RREQ (route request) messages to find a route to a destination. However, the flooding of RREQ causes heavy loads in the network and it leads to significant delay in packet delivery. Especially, since a large portion of traffic is transmitted from sensor nodes to...
ZigBee offers a practical application solution coupled with low rate, low cost, low energy consumption characteristics for WSNs. There are many ZigBee monitoring systems which have been developed based on ZigBee. Energy consumption and latency are two critical performance measurements in most monitoring systems. The design of routing strategy in network layer may affect these two performance measurements...
Wireless sensor network is a kind of self-organization wireless network which taking the data as center. The node in network is intensive, huge quantity and covering a large area. Aiming at the characters of wide range of area, large amount of information, and complexity of real-time transmission in rural district, this paper developed a wireless sensor network system based on ZigBee technology for...
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