Multiple access with attention-based tournaments for monitoring over wireless networks
2009 (English)In: Proceedings of the European Control Conference 2009, EUCA , 2009, 4302-4307 p.Conference paper (Refereed)
Wireless sensor networks for control and moni- toring applications introduce critical constraints on the design of multiple access schemes. Controlling dynamic processes requires that priority must be given to critical systems for the use of the wireless medium. Tournaments in the medium access control (MAC) layer are presented as a way to evaluate priorities and assign channel resources in a distributed manner. The priorities are dynamically assigned based on the attention that each data packet requires. A mathematical formulation of attention is presented together with the corresponding performance analysis of the multiple access scheme. Priorities based on the attention emphasize the information content in the data to be transmitted and the related process dynamics. It is shown that under certain conditions, the performance of this distributed scheme converges to a scheduling policy based on minimizing the per-sample variance of the error in the estimates obtained with limited communication resources. Sustainable data rates for a cluster of linear processes are also derived.
Place, publisher, year, edition, pages
EUCA , 2009. 4302-4307 p.
Access control, Communication channels (information theory), Medium access control, Scheduling, Wireless sensor networks, Critical constraints, Information contents, Limited communication, Mathematical formulation, Medium access control layer, Multiple access scheme, Performance analysis, Scheduling policies, Process control
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-47667ScopusID: 2-s2.0-84955182917ISBN: 9789633113691ISBN: 9783952417393OAI: oai:DiVA.org:kth-47667DiVA: diva2:455948
2009 10th European Control Conference, ECC 2009, 23 August 2009 through 26 August 2009
QC 201111172011-11-172011-11-112015-06-08Bibliographically approved