Improving the LEACH Protocol for Heterogeneous Wireless Sensor Networks

DOI

10.2991/icmmita-15.2015.128How to use a DOI?

Keywords

Heterogeneous wireless sensor network; routing protocol; pairwise key; energy; security; connectivity

Abstract

Routing protocol has been a challenging issue in the design of wireless sensor networks. This paper presents an improving LEACH protocol for heterogeneous wireless sensor networks. The new protocol consists of a number of rounds. The wireless sensor networks have some sensor nodes that have greater power and transmission capability than other nodes. Both ordinary nodes and heterogeneous nodes are distributed respectively in a sensing area that is divided into a number of equilateral hexagons called clusters, each of which consists of six equilateral triangles called cells. After forming the clusters, they do not change in all latter rounds. Each equilateral triangle has the same number nodes, both heterogeneous nodes and ordinary nodes, and then each equilateral hexagon has the same number nodes too. The protocol selects a heterogeneous node that is at the cluster center as the cluster head in all clusters. The pairwise keys between nodes are established through utilizing the concept of the overlap key sharing and the random key pre-distribution scheme. Moreover, all ordinary nodes send their messages to their cluster heads after authenticating those messages. The data are sent to the base station in a manner of multi-jumping along a routing path consisting of cluster heads. The arithmetic balances energy expense among all kinds of nodes, saves the node energy, and prolongs the life of wireless sensor networks. Additionally, analysis demonstrates that the connectivity and security of wireless sensor networks have been improved obviously with some heterogeneous nodes.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Yuquan Zhang
AU  - Lei Wei
PY  - 2015/11
DA  - 2015/11
TI  - Improving the LEACH Protocol for Heterogeneous Wireless Sensor Networks
BT  - Proceedings of the 2015 3rd International Conference on Machinery, Materials and Information Technology Applications
PB  - Atlantis Press
SP  - 660
EP  - 667
SN  - 2352-538X
UR  - https://doi.org/10.2991/icmmita-15.2015.128
DO  - 10.2991/icmmita-15.2015.128
ID  - Zhang2015/11
ER  -