Practical Implementation and Stability Analysis of ALOHA‐Q for Wireless Sensor Networks. Issue 5 (1st October 2016)

• Record Type: Journal Article
• Authors: Kosunalp, Selahattin; Mitchell, Paul Daniel; Grace, David; Clarke, Tim
• Is Part Of: ETRI journal. Volume 38:Issue 5(2016)
• Page Start: 911
• Page End: 921
• Publication Date: 2016-10-01
• Subjects: Q‐learning -- medium access control -- resilience level -- wireless sensor networks; Telecommunication -- Periodicals; Electronics -- Periodicals; Electronics; Telecommunication; Periodicals; Periodicals; 621.38205
• DOI: 10.4218/etrij.16.0115.1030
• Languages: English
• ISSNs: 1225-6463

Abstract

Abstract : This paper presents the description, practical implementation, and stability analysis of a recently proposed, energy‐efficient, medium access control protocol for wireless sensor networks, ALOHA‐ Q, which employs a reinforcement‐learning framework as an intelligent transmission strategy. The channel performance is evaluated through a simulation and experiments conducted using a real‐world test‐bed. The stability of the system against possible changes in the environment and changing channel conditions is studied with a discussion on the resilience level of the system. A Markov model is derived to represent the system behavior and estimate the time in which the system loses its operation. A novel scheme is also proposed to protect the lifetime of the system when the environment and channel conditions do not sufficiently maintain the system operation.