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Umarani, R.
- Energy Efficient Cluster Based key Management Technique for Wireless Sensor Networks
Authors
1 Bharatiar University, Coimbatore, Tamilnadu, IN
Source
Oriental Journal of Computer Science and Technology, Vol 4, No 2 (2011), Pagination: 293-304Abstract
Wireless Sensor Networks (WSN) is vulnerable to node capture attacks in which an attacker can capture one or more sensor nodes and reveal all stored security information which enables him to compromise a part of the WSN communications. Due to large number of sensor nodes and lack of information about deployment and hardware capabilities of sensor node, key management in wireless sensor networks has become a complex task. Limited memory resources and energy constraints are the other issues of key management in WSN. Hence an efficient key management scheme is necessary which reduces the impact of node capture attacks and consume less energy. In this paper, we develop a cluster based technique for key management in wireless sensor network. Initially, clusters are formed in the network and the cluster heads are selected based on the energy cost, coverage and processing capacity. The sink assigns cluster key to every cluster and an EBS key set to every cluster head. The EBS key set contains the pairwise keys for intra-cluster and inter-cluster communication. During data transmission towards the sink, the data is made to pass through two phases of encryption thus ensuring security in the network. By simulation results, we show that our proposed technique efficiently increases packet delivery ratio with reduced energy consumption.
Keywords
Wireless Sensor Networks, Key Management, Data Transmission, Attacks, Cluster.Full Text
- A Fault Tolerant Power Constraint AODV Protocol for MANET
Authors
1 Department of Computer Science, VLB Janakiammal College of Arts and Science, Coimbatore, Tamil Nadu, IN
2 Department of Computer Science, Sri Sarada College for Women, Salem, Tamil Nadu, IN
Source
Oriental Journal of Computer Science and Technology, Vol 5, No 1 (2012), Pagination: 55-61Abstract
The rapid development in the wireless technology, enormous availability of mobile devices make the people expectation of their communication with each other without any interruption. Mobile Adhoc Network is a collection of mobile devices which communicate with each other without any infrastructure. The communication networks suffer due to frequent changes in topology because of mobility and scalability. The main objective of this protocol is to resoleve this issue by proposing an enhanced reliable,fault tolerant routing protocol for MANET based on the reactive routing protocol AODV, and is called Fault Tolerant Power Constraint Adhoc On Demand Distance Vector Routing (FTPC-AODV). The proposed FTPC-AODV deals with how the mechanism adapt to topology changes due to mobility induced link break by building back up paths between the source and destination by considering battery power as a constraint. If the primary path fails, it automatically switches to the backup path and improves the data transfer rate. The protocol is implemented using Network Simulator (NS-2) and simulation results are analyzed based on the quantitative metrics. The derived results shows that the performance of Adhoc Newtork significantly improved by means of good packet delivery ratio, through put and reduced packet loss, and delay.Keywords
MANET, NS-2, AODV, FTPC-AODV, Quantitative Metrics.Full Text