International Journal of Electrical and Computer Engineering (IJECE) Vol. 10, No. 3, June 2020, pp. 3284~3394 ISSN: 2088-8708, DOI: 10.11591/ijece.v10i3.pp3284-3394  3284 Journal homepage: http://ijece.iaescore.com/index.php/IJECE Maximize resource utilization based channel access model with presence of reactive jammer for underwater wireless sensor network Sheetal Bagali, R. Sundaraguru Department of Electronics and Communication Engineering, Sir M Visvesvaraya Institute of Technology, India Article Info ABSTRACT Article history: Received Jun 4, 2019 Revised Dec 11, 2019 Accepted Jan 8, 2020 Underwater sensor networks (UWSNs) are vulnerable to jamming attacks. Especially, reactive jamming which emerged as a greatest security threat to UWSNs. Reactive jammer are difficult to be removed, defended and identified. Since reactive jammer can control and regulate (i.e., the duration of the jam signal) the probability of jamming for maintaining high vulnerability with low detection probability. The existing model are generally designed considering terrestrial wireless sensor networks (TWSNs). Further, these models are limited in their ability to detect jamming correctly, distinguish between the corrupted and uncorrupted parts of a packet, and be adaptive with the dynamic environment. Cooperative jamming model has presented in recent times to utilize resource efficiently. However, very limited work is carried out using cooperative jamming detection. For overcoming research challenges, this work present Maximize Resource Utilization based Channel Access (MRUCA). The MRUCA uses cross layer design for mitigating reactive jammer (i.e., MRUCA jointly optimizes the cooperative hopping probabilities and channel accessibility probabilities of authenticated sensor device). Along with channel, load capacity of authenticated sensor device is estimated to utilize (maximize) resource efficiently. Experiment outcome shows the proposed MRUCA model attain superior performance than state-of-art model in terms of packet transmission, BER and Detection rate. Keywords: Cooperative communication Cross layer design Jamming detection Medium access control Reactive jamming Spatial reuse UWSN Copyright © 2020 Institute of Advanced Engineering and Science. All rights reserved. Corresponding Author: Sheetal Bagali, Department of Electronics and Communication Engineering, Sir M Visvesvaraya Institute of Technology, Bengaluru, Karnataka 562157, India. Email: sheetal.bagali@gmail.com 1. INTRODUCTION Underwater wireless sensor network play a major role across various application services in offering ubiquitous assess such as weather forecasting, marine safety, environment etc. where sensor devices are placed across environment to offer continuous connectivity and services. Thus, aid in improving quality of humans life. However, traditional wireless network can easily compromised by jamming technology. This is due to exposed nature of wireless links. Jamming can induce attack [1] such as Denial-of-Service (DoS) attack, Sybil attack etc. affecting performance of UWSN [2, 3]. Jamming in UWSN can be defined as the interference induced in existing wireless network communication by malicious sensor nodes by decreasing the signal-to-noise ratio (SINR) of the authenticated sensor device (receiver side) by transmitting interfering wireless signals. Jamming is different from regular noise or interference because it is a resultant of deliberate use of wireless signal to degrade network performance whereas as interference is an unintentional forms of noise disrupting performance of UWSN. Unintentional interference caused in network is due to