Open Access

ARTICLE

Improved Enhanced Dbtma with Contention-Aware Admission Control to Improve the Network Performance in Manets

by M. Sivaram¹, D. Yuvaraj², Amin Salih Mohammed³, V. Manikandan⁴, V. Porkodi⁴, N. Yuvaraj⁵

1 Department of Computer Networking, Lebanese French University, Erbil-44001, Kurdistan Region, Iraq.
2 Department of Computer Science, Cihan University, Duhok- 42001, Kurdistan Region, Iraq.
3 College of Engineering and Computer Science, Lebanese French University, Erbil-44001, Kurdistan Region, Iraq.
4 Department of Computer Networking, Lebanese French University, Erbil-44001, Kurdistan Region, Iraq.
5 Department of Computer Science and Engineering, St. Peter's Institute of Higher Education and Research, Chennai-600 54, India.

* Corresponding Author: M. Sivaram. Email: ; .

Computers, Materials & Continua 2019, 60(2), 435-454. https://doi.org/10.32604/cmc.2019.06295

Abstract

DBTMA relies entirely on RTS/CTS dialogue for un-collided transmission of data. The purpose is to improve the QoS at MAC layer by developing it over 802.11e standard. However, DBTMA does not guarantee real-time constraints without efficient method for controlling the network loads. The main challenges in MANETs include prediction of the available bandwidth, establishing communication with neighboring nodes and predicting the consumption of bandwidth flow. These challenges are provided with solutions using Contention-Aware Admission Control (CACP) protocol. In this paper, the EDBTMA protocol is combined with CACP protocol that introduces bandwidth calculation using admission control strategy. The calculation includes certain metrics like: admission control and bandwidth consumption. To compute the bandwidth of channel, bandwidth utilization and traffic priority is distinguished through dual busy tone is proposed. This operates distinctly on its own packet transmission operation. This CACP mechanism defends the conventional traffic flows from new nodes and based on the measured status information of the channel, it QoS of the admitted flows is maintained. This ensures maximum amount of bandwidth flows accommodated by resources and determines the resources in a system meet the new flow requirements while maintaining existing bandwidth flow levels.

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