Opportunistic Transmission Scheduling Using Medium Access Control Protocol
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2015, Vol 3, Issue 5
Abstract
Mobile underwater networks with acoustic communications are confronted with several unique challenges such as long propagation delay, high transmission power utilization, and node mobility. Propose the delay-aware opportunistic transmission scheduling (DOTS) algorithm designed for underwater mobile sensor networks. It uses passively obtained local information to increase the chances of concurrent transmissions while reducing the likelihood of collisions. Propose a simple performance enhancement mechanism that permits multiple outstanding packets at the sender side enabling multiple transmission sessions significantly improves the overall throughput. Proposed a MAC protocol called DOTS that alleviates limitations caused by the long propagation latency and the severely limited bandwidth of acoustic communications. DOTS can effectively exploit temporal and spatial reuse by using local information. In DOTS, each node learns neighboring nodes’ propagation delay information and their expected transmission schedules by passively overhearing packet transmissions. DOTS aimed to achieve better channel utilization by harnessing both temporal and spatial reuse. Our simulation results document that DOTS provides fair medium access even with node mobility. A channel access protocol for ad-hoc underwater acoustic networks. The protocol saves transmission energy by avoiding collisions while maximizing throughput. This protocol achieves a throughput several times higher than that of the Slotted FAMA, while offer related savings in energy.
Authors and Affiliations
Nandhini Selvam, Karthick Krishnamoorthy
Keywords
Related Articles
- EP ID EP20853
- DOI -
- Views 261
- Downloads 4
Path Planning in Outdoor and Unknown Environment using BAPSO Algorithm.
The path planning through BAPSO algorithm in outdoor and unknown environments is a novel approach for robotic path planning. The BAPSO is a hybrid (BAT and PSO) algorithm. The main challenges of robotics are its automat...
Comparison of STFT and CWT for Normal subjects and OSA patient
Obstructive sleep apnea (OSA) is a potentially serious sleep disorder and is caused by obstruction in the upper airway in the presence of the breathing effort. It is characterized by recurrent episodes of upper airway (...
Numerical Study on Thermal and Flow Characteristics of Air in a Square Duct using Delta Wing Vortex Generators
The impact of delta wing vortex generators in a square duct on the thermal and flow characteristics execution has been numerically explored in this study. The vortex generator allows the air flow to distribute more and...
Radar Imaging In Two Dimensions
This paper is going to describe what is radar imaging in two dimensions, principles on which it works, it’s application, what are the types of radar imaging ,what are the major problems occurring in it and the solutions...
Performance Evaluation of Effluent Treatment Plant of Dairy Industry in Gwalior (M.P.).
Dairy industries are generally considered to be the largest source of wastewater in many countries. Although they are not commonly associated with severe environmental problems, they must continually consider their envi...