Key Establishment using Selective Repeat Automatic Repeat Request Mechanism for Wireless Sensor Networks

In Key pre-distribution techniques for security provision of Wireless Sensor Networks, a diminutive number of keys are randomly chosen from a large key pool and loaded on the sensors prior to deployment such that they have a common key. Secret keys generated are then placed in sensor nodes, and each sensor node ransacks the area in its communication range to find another node to communicate. A secure link is established when two nodes discover one or more common keys, and communication is done on that link between those two nodes. Few neighboring sensors do not share any common key. To establish secure link in such networks, a secret key is exchanged via a multi-hop secure path. But sensors may be compromised on the path rendering process insecure. This paper sets forth a research plan for an enhanced Modified Incremental Redundancy Transmission scheme that uses Selective Repeat Automatic Repeat Request mechanism to address the problem. Through multiple multi-hop paths, the information is transmitted. Only when the destination fails to decode the information, erroneous frame are transmitted to reduce the transmission overhead.