HAMA: A Herd-Movement Adaptive MAC Protocol for Wireless Sensor Networks
Eyuel Debebe Ayele, Nirvana Meratnia, Paul Havinga · 2016
In this paper we propose HAMA, i.e. a herd-movement adaptive medium access control protocol suitable for wireless sensor networks with mobile nodes. The specific focus of HAMA is wildlife monitoring applications, in which network protocol is required to adapt to the movement patterns of herds to make the communication more energy-efficient and reliable. The protocol is an extension of preamble sampling scheme with an adaptive sleep-interval based on network traffic conditions. We have implemented and evaluated HAMA on Contiki Cooja platform. Our simulation results show 22.28%-52.28% reduction of average network energy consumption as well as 11.65%-14.63% reduction of average end-to-end latency when HAMA is compared with A-MAC and X- MAC. The overall packet reliability of the gateway node(s) is also increased by up to 16.3%.