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Deadline-constrained maximum reliability packet forwarding with limited channel state information
KTH, Skolan för elektro- och systemteknik (EES), Reglerteknik.
KTH, Skolan för elektro- och systemteknik (EES), Reglerteknik.
2013 (Engelska)Ingår i: 2013 IEEE Wireless Communications and Networking Conference (WCNC), New York: IEEE Communications Society, 2013, s. 1721-1726Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

This paper considers real-time packet forwarding over wireless multi-hop networks with lossy and bursty links. Our objective is to maximize the probability that individual packets reach their destination before a hard deadline. The loss processes on links are modeled by finite-state Markov chains. While the parameters of the Markov chains are assumed to be known, the instantaneous channel states are not accessible but have to be estimated from observations of successes and failures of actual packet transmissions. We formulate the forwarding problem as a partially observable Markov decision process and derive the optimal forwarding policy. A novel technique, based on maximum-volume inscribed ellipsoids, for computing approximate solutions with reduced implementation complexity is proposed. We further discuss structural properties of the value function and the optimal actions. Finally, numerical examples illustrate the power of the developed techniques.

Ort, förlag, år, upplaga, sidor
New York: IEEE Communications Society, 2013. s. 1721-1726
Serie
IEEE Wireless Communications and Networking Conference, WCNC, ISSN 1525-3511
Nyckelord [en]
Approximate solution, Implementation complexity, Maximum reliability, Numerical example, Packet forwarding, Packet transmissions, Partially observable Markov decision process, Wireless multi-hop network
Nationell ämneskategori
Kommunikationssystem
Identifikatorer
URN: urn:nbn:se:kth:diva-133856DOI: 10.1109/WCNC.2013.6554823ISI: 000326048101140Scopus ID: 2-s2.0-84881577612ISBN: 978-146735939-9 (tryckt)OAI: oai:DiVA.org:kth-133856DiVA, id: diva2:663652
Konferens
2013 IEEE Wireless Communications and Networking Conference, WCNC 2013; Shanghai; China; 7 April 2013 through 10 April 2013
Anmärkning

QC 20131112

Tillgänglig från: 2013-11-12 Skapad: 2013-11-11 Senast uppdaterad: 2013-12-10Bibliografiskt granskad

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