Directed diffusion: a scalable and robust communication paradigm for sensor networks
MobiCom '00 Proceedings of the 6th annual international conference on Mobile computing and networking
A key-management scheme for distributed sensor networks
Proceedings of the 9th ACM conference on Computer and communications security
Energy-Efficient Communication Protocol for Wireless Microsensor Networks
HICSS '00 Proceedings of the 33rd Hawaii International Conference on System Sciences-Volume 8 - Volume 8
LEAP+: Efficient security mechanisms for large-scale distributed sensor networks
ACM Transactions on Sensor Networks (TOSN)
SBK: A Self-Configuring Framework for Bootstrapping Keys in Sensor Networks
IEEE Transactions on Mobile Computing
A Tabu Search Algorithm for Cluster Building in Wireless Sensor Networks
IEEE Transactions on Mobile Computing
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Two-tier topology makes good candidate for making clusters in wireless sensor networks. So we have considered a heterogeneous 2-tier topology to route the data securely among nodes in the sensor network. Initially, after deploying two types of nodes low-end and high-end nodes in the area of interest we divide the given area into clusters. A multilevel approach is used to partition and adjust the nodes in the clusters in a sophisticated manner that the performance of Improved Tree routing is improved. Researchers mainly focus on routing the data efficiently and effectively in the sensor network. Only a few considered integrating security in the design of a routing protocol. We have also made an effort to make Improved Tree routing secure by integrating pairwise key management scheme in it. Through simulations it is shown that given approach performs better than some of the existing protocols.