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Dynamic bandwidth allocation with fair scheduling for WCDMA systems

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3 Author(s)
Liang Xu ; Waterloo Univ., Ont., Canada ; Xuemin Shen ; Mark, J.W.

Dynamic bandwidth allocation (DBA) will play an important role in future broadband wireless networks, including the 3G and 4G WCDMA systems. A code-division generalized processor sharing (CDGPS) fair scheduling DBA scheme is proposed for WCDMA systems. The scheme exploits the capability of the WCDMA physical layer, reduces the computational complexity in the link layer, and allows channel rates to be dynamically and fairly scheduled in response to the variation of traffic rates. Deterministic delay bounds for heterogeneous packet traffic are derived. Simulation results show that the proposed CDGPS scheme is effective in supporting differentiated QoS, while achieving efficient utilization of radio resources.

Published in:

Wireless Communications, IEEE  (Volume:9 ,  Issue: 2 )

Date of Publication:

April 2002

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