Mean LQI and RSSI based link evaluation algorithm and the application in frequency hopping mechanism in wireless sensor networks

2011 ◽  
Author(s):  
Fu Dong-xu ◽  
Feng Dong-qin ◽  
Zhang He-nan
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Frequency Hopping ◽  
Wireless Sensor ◽  
Hopping Mechanism ◽  
Evaluation Algorithm

scholarly journals A Novel OBDD-Based Reliability Evaluation Algorithm for Wireless Sensor Networks on the Multicast Model

2015 ◽  
Vol 2015 ◽  
pp. 1-14 ◽  
Author(s):  
Zongshuai Yan ◽  
Chenhua Nie ◽  
Rongsheng Dong ◽  
Xi Gao ◽  
Jianming Liu
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Wireless Sensor ◽  
Formal Definition ◽  
Hard Problem ◽  
Combinatorial Explosion ◽  
Binary Decision ◽  
Reliability Calculation ◽  
Evaluation Algorithm ◽  
Terminal Reliability

The two-terminal reliability calculation for wireless sensor networks (WSNs) is a #P-hard problem. The reliability calculation of WSNs on the multicast model provides an even worse combinatorial explosion of node states with respect to the calculation of WSNs on the unicast model; many real WSNs require the multicast model to deliver information. This research first provides a formal definition for the WSN on the multicast model. Next, a symbolic OBDD_Multicast algorithm is proposed to evaluate the reliability of WSNs on the multicast model. Furthermore, our research on OBDD_Multicast construction avoids the problem of invalid expansion, which reduces the number of subnetworks by identifying the redundant paths of two adjacent nodes ands-tunconnected paths. Experiments show that the OBDD_Multicast both reduces the complexity of the WSN reliability analysis and has a lower running time than Xing’s OBDD- (ordered binary decision diagram-) based algorithm.

scholarly journals Trust Based Authentication Mechanism in Wireless Sensor Networks

2016 ◽  
Vol 12 (1) ◽  
pp. 58
Author(s):  
Li Ru Ping
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Data Exchange ◽  
Wireless Sensor ◽  
Network Nodes ◽  
Authentication Mechanism ◽  
Efficiency And Effectiveness ◽  
Evaluation Algorithm ◽  
History Of ◽  
Interaction History

Authentication mechanism is the basis of access control and data exchange. In wireless sensor networks, the vulnerability of network nodes and complexity of communication protocols pose a huge challenge for designing authentication mechanism in such environment. In this paper, we study the authentication mechanism in wireless sensor networks based on trust between nodes. We use the interaction history of nodes for recommendation trust computation, and the interaction history comes from the interactions between nodes. We design a penalty mechanism for hostile nodes based on the TCP congestion control protocol, and present a loyalty based trust recommendation evaluation algorithm. Massive experiments validate the efficiency and effectiveness of the proposed approach.

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