The Annals of Applied Probability

Optimal queue-size scaling in switched networks

D. Shah, N. S. Walton, and Y. Zhong

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Abstract

We consider a switched (queuing) network in which there are constraints on which queues may be served simultaneously; such networks have been used to effectively model input-queued switches and wireless networks. The scheduling policy for such a network specifies which queues to serve at any point in time, based on the current state or past history of the system. In the main result of this paper, we provide a new class of online scheduling policies that achieve optimal queue-size scaling for a class of switched networks including input-queued switches. In particular, it establishes the validity of a conjecture (documented in Shah, Tsitsiklis and Zhong [Queueing Syst. 68 (2011) 375–384]) about optimal queue-size scaling for input-queued switches.

Article information

Source
Ann. Appl. Probab., Volume 24, Number 6 (2014), 2207-2245.

Dates
First available in Project Euclid: 26 August 2014

Permanent link to this document
https://projecteuclid.org/euclid.aoap/1409058031

Digital Object Identifier
doi:10.1214/13-AAP970

Mathematical Reviews number (MathSciNet)
MR3262502

Zentralblatt MATH identifier
1307.60135

Subjects
Primary: 60K25: Queueing theory [See also 68M20, 90B22] 60K30: Applications (congestion, allocation, storage, traffic, etc.) [See also 90Bxx] 90B36: Scheduling theory, stochastic [See also 68M20]

Keywords
Switched network maximum weight scheduling fluid models state space collapse heavy traffic diffusion approximation

Citation

Shah, D.; Walton, N. S.; Zhong, Y. Optimal queue-size scaling in switched networks. Ann. Appl. Probab. 24 (2014), no. 6, 2207--2245. doi:10.1214/13-AAP970. https://projecteuclid.org/euclid.aoap/1409058031


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