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An adaptive bandwidth reservation scheme in multimedia wireless networks

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2 Author(s)
Xiang Chen ; Dept. of Electr. & Comput. Eng., Florida Univ., Gainesville, FL, USA ; Yuguang Fang

Next generation wireless networks target to provide quality of service (QoS) for multimedia applications. In this paper, the system supports two QoS criteria, i.e., the system should keep the handoff dropping probability always less than a predefined QoS bound, while maintaining the relative priorities of different traffic classes in terms of blocking probability. To achieve this goal, a dynamic multiple-threshold bandwidth reservation scheme is proposed, which is capable of granting differential priorities to different traffic class and to new ad handoff traffic for each class by dynamically adjusting bandwidth reservation thresholds. Moreover, in times of network congestion, a preventive measure by use of throttling new connection acceptance is taken. Another contribution of this paper is to generalize the concept of relative priority, hence giving the network operator more flexibility to adjust admission control policy by incorporating some dynamic factors such as offered load. The elaborate simulation is conducted to verify the performance of the scheme.

Published in:

Global Telecommunications Conference, 2003. GLOBECOM '03. IEEE  (Volume:5 )

Date of Conference:

1-5 Dec. 2003

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