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Fair resource allocation with guaranteed statistical QoS for multimedia traffic in wideband CDMA cellular network

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3 Author(s)
Liang Xu ; Dept. of Electr. & Comput. Eng., Waterloo Univ., Ont., Canada ; Xuemin Shen ; Mark, Jon W.

A dynamic fair resource allocation scheme is proposed to efficiently support real-time and non-real-time multimedia traffic with guaranteed statistical quality of service (QoS) in the uplink of a wideband code-division multiple access (CDMA) cellular network. The scheme uses the generalized processor sharing (GPS) fair service discipline to allocate uplink channel-resources, taking into account the characteristics of channel fading and intercell interference. In specific, the resource allocated to each traffic flow is proportional to an assigned weighting factor. For real-time traffic, the assigned weighting factor is a constant in order to guarantee the traffic statistical delay bound requirement; for non-real-time traffic, the assigned weighting factor can be adjusted dynamically according to fading, channel states and the traffic statistical fairness bound requirement. Compared with the conventional static-weight scheme, the proposed dynamic-weight scheme achieves capacity gain. A flexible trade-off between the GPS fairness and efficient resource utilization can also be achieved. Analysis and simulation results demonstrate that the proposed scheme enhances radio resource utilization and guarantees statistical QoS under different fairness bound requirements.

Published in:

Mobile Computing, IEEE Transactions on  (Volume:4 ,  Issue: 2 )

Date of Publication:

March-April 2005

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