ETEEM- Extended Traffic Aware Energy Efficient MAC Scheme for WSNs

Younas Khan,Fakhri Alam,Imran Ahmad,Saqib Shahid,M Irfan,Sheeraz Ahmed

doi:10.14569/ijacsa.2016.071134

Abstract

Idle listening issue arises when a sensor node listens to medium despite the absence of data which results in consumption of energy. ETEEM is a variant of Traffic Aware Energy Efficient MAC protocol (TEEM) which focuses on energy optimization due to reduced idle listening time and much lesser overhead on energy sources. It uses a novel scheme for using idle listening time of sensor nodes. The nodes are only active for small amount of time and most of the time, will be in sleep mode when no data is available. ETEEM reduces energy at byte level and uses a smaller byte packet called FLAG replacing longer byte SYNC packets of S-MAC and SYNCrts of TEEM respectively. It also uses a single acknowledgement packet per data set hence reducing energy while reducing frequency of the acknowledgment frames sent. The performance of ETEEM is 70% better comparative to other under-consideration MAC protocols.

Highlights

Wireless sensor networks (WSNs) [1] are used in scenarios where human body cannot reach like earthquakes, battlefield, flood forecasting or for weather forecasting etc
ACK packet sent per fragment consumes energy. Due to these issues in Traffic Aware Energy Efficient MAC protocol (TEEM) protocol and S-MAC protocols we developed Extended Traffic Aware Energy Efficient MAC (ETEEM) protocol
Experiment are depicted in figure 12 which shows that ETEEM consumes 0.0035% and 0.0043% less energy from TEEM and S-MAC respectively

Summary

INTRODUCTION

Wireless sensor networks (WSNs) [1] are used in scenarios where human body cannot reach like earthquakes, battlefield, flood forecasting or for weather forecasting etc. Sensor-MAC (S-MAC) was proposed to minimize energy consumption for all four sources (i.e. idle listening time, overhearing, overhead, hidden terminal problem) of power wastage. One major drawback of S-MAC protocol is its fixed time interval of active and sleep state which may still result in idle listening time To address this issue, Traffic Aware Energy Efficient MAC (TEEM) protocol was proposed. When there is data with the nodes it is active for whole life cycle else it goes to sleep state very earlier its normal schedule Both S-MAC and TEEM protocols send Acknowledgment (ACK) packet per fragment. ETEEM protocol incorporates variable time slot for active and sleep interval, and introduces ACK packet per burst instead of ACK packet per fragment; resulting in reduced overhead It uses four- byte packet called FLAG instead of ten byte SYNC packet. Major contributions of this paper include: 1) Energy optimization due to reduced idle listening time 2) Energy optimization due to reduced overhead 3) Implementation of ETEEM protocol, simulation and evaluation www.ijacsa.thesai.org

LITRATURE REVIEW

PERFORMANCE ANALYSIS

PERFORMANCE CASES

Findings

CONCLUSIONS AND FUTURE WORK