Priority focused medium access control in wireless sensor actuator networks for CPS. (2016)

• Record Type: Journal Article
• Authors: Sultana, H. Parveen; Krishna, P. Venkata
• Is Part Of: International journal of communication networks and distributed systems. Volume 16:Number 2(2016)
• Page Start: 99
• Page End: 113
• Publication Date: 2016
• Subjects: cyber physical systems -- CPS -- wireless sensor actuator networks -- WSANs -- node priority -- MAC protocol 802154 -- non-beacon enabled -- medium access control -- wireless sensor networks -- WSNs -- smart nodes -- collision avoidance -- simulation; Computer networks -- Periodicals; Telecommunication systems -- Periodicals; Electronic data processing -- Distributed processing -- Periodicals; 004.6
• Languages: English
• ISSNs: 1754-3916

Abstract

In cyber physical systems (CPSs), wireless sensor actuator networks (WSANs) play a major role in interconnecting the physical world through wireless devices. It is considered that MAC protocol 802.15.4 is an appropriate protocol for CPSs environment. In this paper, we proposed a medium access control procedure with priority called virtually prioritised backoff procedure (VPBP). Smart nodes involved in this network are initially assigned a priority according to its functionality. A smart node with highest priority is accessed by the centre node (coordinator) initially. If a priority of node is equal then by assigning a fair chance, a starving node with highest critical value is allowed to transmit the data. This is to overcome the disadvantage of traditional 802.15.4 carrier sense multiple access with collision avoidance (CSMA/CA) method. Finally, we have proved with the simulation results that the VPBP approach has reduced the collisions in a CPS based wireless networks.