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Selfish users in energy constrained ALOHA systems with power capture
KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth. KTH, School of Information and Communication Technology (ICT), Communication: Services and Infrastucture, Communication Systems, CoS.ORCID iD: 0000-0003-4986-6123
2011 (English)In: Wireless networks, ISSN 1022-0038, E-ISSN 1572-8196, Vol. 17, no 1, 199-212 p.Article in journal (Refereed) Published
Abstract [en]

We consider a slotted ALOHA setting where backlogged, energy-constrained users selfishly select the probability with which they transmit packets. Packets are successfully received, even in case of collision, if the signal to interference plus noise ratio at the access point exceeds some threshold (power capture). The user problem of finding appropriate transmission probabilities is formulated as a static non-cooperative game and the performance limits for stationary and mobile scenarios are determined. The equilibrium analyses show that for stationary scenarios, users with high pathgains share the channel fairly while others never transmit. In the mobile case users utilize a binary strategy where they try to monopolize the channel when their pathgain exceeds some threshold that depends on system parameters (number of users, transmission costs, etc.). Otherwise they shut their transmitters off. Compared to traditional nondiscriminatory distributed multiaccess protocols the operating points achieved by selfish users generally increase sum-utility although this comes at the expense of larger user performance variations.

Place, publisher, year, edition, pages
2011. Vol. 17, no 1, 199-212 p.
Keyword [en]
ALOHA systems, Non-cooperative games, Power capture
National Category
Computer and Information Science
Identifiers
URN: urn:nbn:se:kth:diva-31296DOI: 10.1007/s11276-010-0273-zISI: 000286195300013Scopus ID: 2-s2.0-79951697845OAI: oai:DiVA.org:kth-31296DiVA: diva2:405196
Funder
ICT - The Next Generation
Note
QC 20110321Available from: 2011-03-21 Created: 2011-03-14 Last updated: 2017-12-11Bibliographically approved

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Zander, Jens

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