Improving existing 6LoWPAN RPL for content based routing

Internet of things has become a subject of interest across a different industry domain. It includes 6LoWPAN (Low-Power Wireless Personal Area Network) which is used for a variety of application including home automation, sensor networks, manufacturing and industry application etc. However, gathering such a huge amount of data from such a different domain causes a problem of traffic congestion, high reliability, high energy efficiency etc. In order to address such problems, content based routing (CBR) technique is proposed, where routing paths are decided according to the type of content. By routing the correlated data to hop nodes for processing, a higher data aggregation ratio can be obtained, which in turns reducing the traffic congestion and minimizes the energy consumption. CBR is implemented on top of existing RPL (Routing Protocol for Low Power and Lossy network) and implemented in contiki operating system using cooja simulator. The analysis are carried out on the basis average power consumption, packet delivery ratio etc.

I. Introduction

Distributed computing has been gaining importance in Internet of Things (IoT) network. It is used across different application in which IoT devices are used because of their processing and storage capabilities. Henceforth, collecting large amount of data across network causes a problem of traffic congestion. So, solution to this problem is to decide the routing path across network, based on the type of content in the packet.