NDLI: Scheduling and Control of Mobile Communications Networks with Randomly Time Varying Channels by Stability Methods

Content Provider	IEEE Xplore Digital Library
Author	Kushner, H.J.
Copyright Year	2006
Description	Author affiliation: Dept. of Appl. Math., Brown Univ., Providence, RI (Kushner, H.J.)
Abstract	Consider a communications network consisting of mobiles, some of which can serve as a receiver and/or transmitter in a multihop path. There are random external data processes, each destined for some destinations. At each mobile the data is queued according to the source-destination pair until transmitted. The capacities of the connecting channels are randomly varying. Time is divided into small scheduling intervals. At the beginning of the intervals, the channels are estimated via pilot signals and this information is used for the scheduling decisions during the interval, concerning the allocation of transmission power and/or time, bandwidth, and perhaps antennas, to the various queues in a queue and channel-state dependent way, to assure stability. Lost packets might or might not have to be retransmitted. General networks are covered, conditions used in previous works are weakened, and the distributions of the input file lengths can be heavy tailed. The resulting controls are readily implementable. The choice of Lyapunov function allows a range of tradeoffs between current rates and queue lengths, under very weak conditions. Because of the non-Markovian nature of the problem, we use the perturbed stochastic Lyapunov function method, which is designed for such problems. Extensions concerning acknowledgments, multicasting, non-unique routes, and others, are available
Starting Page	2967
Ending Page	2973
File Size	207774
Page Count	7
File Format	PDF
ISBN	1424401712
DOI	10.1109/CDC.2006.376882
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-12-13
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Communication system control Mobile communication Stability Lyapunov method Communication networks Transmitters Spread spectrum communication Joining processes Bandwidth Transmitting antennas heavy tailed distributions Scheduling in stochastic networks randomly-varying link capacities mobile networks stochastic stability stability of networks with randomly varying links routing in ad-hoc networks perturbed stochastic Liapunov functions
Content Type	Text
Resource Type	Article

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