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On utility-fair adaptive services in wireless networks

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3 Author(s)
Bianchi, G. ; Dipt. di Elettronica e Inf., Politecnico di Milano, Italy ; Campbell, A.T. ; Liao, R.R.-F.

Adaptive quality-of-service (QoS) techniques can effectively respond to time-varying channel conditions found in wireless networks. In this paper, we assess the state-of-the-art in QoS adaptive wireless systems and argue for new adaptation techniques that are better suited to respond to application-specific adaptation needs. A QoS adaptive data link control model is presented that accounts for application-specific adaptation dynamics that include adaptation time scales and adaptation policies. A centralized adaptation controller employs a novel utility-fair bandwidth allocation scheme that supports the dynamic bandwidth needs of adaptive flows over a range of operating conditions. Three wireless service classes play an integral role in accommodating a wide variety of adaptation strategies. In this paper, we discuss the design of the utility-fair allocation scheme and the interaction between the centralized adaptation controller and a set of distributed adaptation handlers, which play a key role in intelligently responding to the time-varying channel capacity experienced over the air-interface

Published in:

Quality of Service, 1998. (IWQoS 98) 1998 Sixth International Workshop on

Date of Conference:

18-20 May 1998

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