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Power-efficiency and transmission delay are critical for periodical data gathering applications in wireless sensor networks. This paper presents a scalable power-efficient data gathering protocol with delay guaranty (PDGPDG) for wireless sensor networks. The protocol attempts to balance the energy consumption and transmission delay by dividing the entire network into clusters and then organizing clusters...
Low-duty-cycle operation has been adopted to alleviate the consumption rate of energy, which is significant for the power scarcity sensor networks. The sleep latency brought by low-duty-cycle mode, however, leads to a dramatic increase of delay, which may not be tolerable for delay-sensitive applications. In this work, we introduce the transmission power control mechanism into low-duty-cycle sensor...
Geographic forwarding has been widely studied as a routing strategy for mobile ad hoc networks, mainly due to the low complexity, scalability of the routing algorithm. However, in a network with routing holes, existing geographic routing schemes such as GPSR, GOAFR could cause the throughput capacity to drop significantly due to concentration of traffic on the face of the holes. The slope-based stateless...
One of the main challenges for a sensor network is conserving the available energy at each sensor node and then prolonging the network lifetime. Many energy efficient/conserving routing protocols have been proposed to the issue; however, the ldquofunnelling effectrdquo in multi-hop communications which describes the convergence of data traffic towards the static sinks (Base Stations) remains a major...
High energy-efficiency and low transmission delay are most important for periodical data gathering applications in wireless sensor networks (WSNs). Therefore, the product of energy consumption and transmission delay, EnergyxDelay is a good metric for such performance evaluation. This paper presents a distributed energy-efficient and delay-aware data gathering protocol, which is efficient in the ways...
Security bootstrap is important to the platform security. If the bootstrap is not secure, Rootkits, Viruses and Trojan horses may be loaded into kernel, thus the following defenses built on the compromised kernel may be useless. In this paper, a trusted-computing based security bootstrap is introduced. We modify trust chain defined by Trusted Computing Group slightly by introducing a new component...
With the introduction of resource-rich mobile elements into wireless sensor networks, the energy-efficiency of such network can be enhanced. In this paper, we study the deployment problem of these mobile elements. A novel potential-field-based coordination protocol, named aggregator deployment protocol for energy conservation (ADPEC) for wireless sensor networks is proposed. The proposed protocol...
Cluster-based routing protocol has been demonstrated as a good way to meet the requirements of wireless sensor networks (WSNs), such as scalability, lifetime constraint and energy-efficiency in LEACH. On one hand, the creation of clusters can lower energy consumption within a cluster by performing data fusion to decrease the amount of sensed data forwarded to BS (base station). On the other hand,...
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