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Lately the use of wireless sensor networks for monitoring seismic events has increased; however, these networks depends on the previous acknowledge of the infrastructure and topology. This topology can’t be updated if any of the nodes is lost during a seismic event, in addition the orientation of the first seismic wave can’t be predicted; because of this, it is necessary to use a type of dynamic network...
Wireless Sensor Network (WSN) is multiple hops network. Nodes near sink are required to transmit a large amount of data and expend energy rapidly. These nodes die early and outer nodes can not send data to sink. Therefore the network dies early with much unused energy. This phenomenon is called energy hole. Aiming at energy hole problem of WSN, a novel solution is proposed in this paper. According...
The lifetime of a sensor node depends on its energy consumption. In order to achieve efficient use of the energy and extend the network's lifetime, this paper discusses the routing algorithm, focusing on the algorithm of SPIN. In the light of the problem of “blindly forward” and “data unaccessible” in SPIN, a new routing algorithm called SPIN-I is proposed, and we simulate it from two aspects with...
Sensors in a Wireless Sensor Network (WSN) are prone to failure, due to energy depletion, hardware failures, etc. Fault tolerance is one of the critical issues in WSNs. The existing fault tolerant mechanisms either consume significant extra energy to detect and recover from the failures or need to use additional hardware and software resource. In this paper, we propose a novel energy-aware fault tolerance...
In this paper, we consider the the WSNs layering learning routing algorithm of random spread of the nodes. A node routing algorithm is given out by node hierarchical and learning method. When count path of routing by using this algorithm, only a little information between this point and its adjacent points is needed. By using depth-first search strategy and combining node route historical experience,...
Recent technological advancements in the field of nanotechnology have increased the computation power of the wireless nodes while adhering to the energy constraints. This has made the use of the Wireless Sensor Networks (WSNs), more widespread, used in applications such as area monitoring, industrial monitoring, vehicle detection or military monitoring. Sensor nodes have made it possible to collect...
On the basis of analyzing, comparing the routing protocol and learning from the advanced thinking, the author proposes the algorithm of wireless sensor network routing based on gradient and the residual energy ant algorithm. Using the character that ant algorithm is simple and easy to realize, works in the part, and it integrates link quality into pheromone and supports many links to design the wireless...
In wireless sensor networks (WSNs), gathering sensed information, transforming the information data to the base station in an energy efficient manner, and lengthening the network lifetime are important issues. Clustering is an energy efficient way that divides sensor nodes into many clusters, each of which has a cluster-head. The routing from cluster-head sensor nodes to the base station, however,...
As sensor nodes are typically powered by non-renewable batteries, energy efficiency is a critical factor in wireless sensor networks (WSNs). And prolonging the lifetime for nodes and the total network is a critical issue. In this paper, a combination weight energy balance clustering and routing algorithm (CW-EBCR) is proposed. This algorithm takes into consideration the following elements: the node...
With the keep growing of the ratio of people over 65, the health care system for elder people is facing challenges. WBAN, being the newest technology, will play an important role in elder people health care system. In this paper, we discussed integrated application of WBAN and WSN in nursing home's health care system, proposed a gradient routing protocol for WSN to satisfy the needs of WBAN data transfer...
Routing algorithm is a key component of wireless sensor networks. The researchers applied a lot of routing algorithm to satisfy the needs of various wireless sensor networks. In this paper we analyzed the topologies of multi-sink node wireless sensor networks and achieved a multi-direction routing algorithm based on meet ant colony optimization for multi-sink node wireless sensor networks. The simulation...
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