Opportunistic spectrum access by wireless devices used in industrial networking
B. Seetha Ramanjaneyulu, E. Gopinathan · 2016
When wireless communication technologies are used in industrial networking, interference to these wireless devices is a major problem. This problem is more in ISM bands. Using licensed bands for industrial sensors and controllers by way of opportunistic spectrum access is being explored in the recent times. But searching by these wireless devices for the available vacant spectrum is a hectic task as many of these devices are very small and operate with limited computing powers. Hence in these kinds of environments it would be better if spectrum sensing task is carried out by more capable devices like access points and share it to all the surrounding tiny wireless devices. It will be more appropriate if the available vacant spectrum details can be obtained from a server like resource. It can alleviate the sensors from carrying out such hectic spectrum sensing activity. It is explored in this work to assess the interference levels in such environments and propose a solution to access licensed bands in opportunistic manner.