Control of mobile communications with time-varying channels in heavy traffic

Consider the forward link of a system with K remote units and a single base transmitter with time varying connecting channels. Data to be transmitted to the remote units arrives according to some random process, and is queued according to its destination. Power is to be allocated to the K channels i...

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Bibliographic Details
Published in:IEEE transactions on automatic control 2002-06, Vol.47 (6), p.992-1003
Main Authors: Buche, R., Kushner, H.J.
Format: Article
Language:English
Subjects:
Applied sciences
Arrivals
Asymptotic properties
Channels
Communication system control
Costs
Exact sciences and technology
Fading
Joining processes
Mathematical models
Mobile communication
Queues
Random processes
Studies
Telecommunications
Telecommunications and information theory
Teleprocessing networks. Isdn
Time varying systems
Time-varying channels
Traffic control
Traffic engineering
Traffic flow
Transmitters
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Summary:Consider the forward link of a system with K remote units and a single base transmitter with time varying connecting channels. Data to be transmitted to the remote units arrives according to some random process, and is queued according to its destination. Power is to be allocated to the K channels in a queue and channel state depend on way to minimize some cost criterion. The channel fading rate is fast and the bandwidth and data arrival rates are high. Owing to the high speed of the fading, arrival, and service rates, an asymptotic or averaging of the heavy traffic type method is promising. By heavy traffic, we mean that on the average there is little server idle time and spare power over the "average" requirements. Heavy traffic analysis eliminates inessential details and focuses on the fundamental issues of scaling and parametric dependencies. To illustrate the scope of the method, several models are considered, and more complicated systems are also treated.
ISSN:0018-9286
1558-2523
DOI:10.1109/TAC.2002.1008363