IOSR Journal of Electronics and Communication Engineering (IOSR-JECE) e-ISSN: 2278-2834,p- ISSN: 2278-8735.Volume 15, Issue 5, Ser. I (Sep - Oct 2020), PP 01-06 www.iosrjournals.org DOI: 10.9790/2834-1505010106 www.iosrjournals.org 1 | Page ContikiMAC for Wireless Sensor Network Monitoring Application L Krishna Karthisha 1 , Reema Mathew 2 ,DrShubhashasi Sahoo 3 , Dr Y Rama Krishna 4 1 (M.Tech, Electronics and Communication Engineering,Gudlavalleru Engineering College, Gudlavalleru, India) 2,3 (Scientist, Centre for Artificial Intelligence and Robotics DRDO, Bengaluru, India) 4 (Professor, Electronics and Communication Engineering, Gudlavalleru Engineering College, Gudlavalleru, India) Abstract:During the most recent decade there is a quickly developing interest in Wireless Sensor Networks (WSN). With the help of this technology, attempts are being made to apply it in various areas like medical and health care, wildlife monitoring, environment monitoring, military operations etc. WSNs in general consist of sensor nodes that are capable of computing, data processing, communication to other sensor nodes. In WSN some problems arise due to energy, coverage, maintenance etc. Medium Access Control (MAC) protocol is the most affected protocol. Accessing of wireless medium and deciding the transmission of data is done by MAC layer. MAC driver and the RDC driver are the two drivers which are focused in this work. Both detecting collisions and retransmissions are tasks of MAC driver. The RDC driver is answerable for the node’s wakeup and sleep mechanism as it controls the radioactive state which extremely influences both the delay and the energy consumption of the node. The RDC drivers that are analysed in this project are ContikiMAC, CxMAC and NullRDC. Through simulations with ContikiOS, grid topology with various parameters is considered. Key Word:WSN, MAC, ContikiOS, CSMA, NullMAC, ContikiMAC, CxMAC, NullRDC. --------------------------------------------------------------------------------------------------------------------------------------- Date of Submission: 05-09-2020 Date of Acceptance: 20-09-2020 --------------------------------------------------------------------------------------------------------------------------------------- I. Introduction WSN are the data networks comprise of sensor nodes [1]. Sensor nodes have restricted processing capability, battery power and channel bandwidth. Sensor network is useful for collecting data from sensor nodes and distributing measurements to destinations. The MAC layer in wireless networking gives access to the wireless media. It is responsible for who and when the information has to be sent. This is extremely significant in wireless networking as all nodes share similar media. So, selecting of proper MAC protocol for a network is essential by considering how much it affects the lifetime and performance of the network. This paper is organised in six sections. Section I introduces WSN, MAC layer and important in selection of proper MAC layer. Related works are discussed in Section II. Section III is about the MAC layers, Operating system and simulator used. Section IV explains about simulation settings whereas results are analysed in Section V. Conclusion is stated in Section VI. II. Related Works The author in [2], observed the performance of ContikiMAC with CxMAC and in particular, he questioned the efficiency of the transmission technique that depends on sending full data frames. The outcome of the fast-sleep optimization of ContikiMAC permits a node to decrease idle-listening to a minimum. The author proposed that, retransmissions are cost effective for ContikiMAC than CxMAC but explained that by decreasing the number of transmissions ContikiMAC was able to overcome the disadvantage. In [3], the author presented an adaptive radio duty cycling layer which is an advancement of ContikiMAC i.e., ERA-ContikiMAC an autonomous mechanism which analyses battery capacity level and then checks channel radio activity. Finally, it decides about RDC frequency. The author in [4] analysed the RPL behaviour under MAC protocol effect in terms of end-to-end delay, power consumption and packet delivery ratio where it shows that ContikiMAC is better in power consumption than other drivers. In [5], the author presented the main challenges faced by the MAC layer and Routing protocol. In [6], the author explains the different issues associated with wireless sensor networks and implemented in some protocols to know the impact of them.