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Service differentiation in multirate wireless networks with weighted round-robin scheduling and ARQ-based error control

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3 Author(s)
Le, L.B. ; Dept. of Electr. & Comput. Eng., Univ. of Manitoba, Winnipeg, Man., Canada ; Hossain, E. ; Alfa, A.S.

The radio link-level delay statistics in a wireless network using adaptive modulation and coding (AMC), weighted round-robin (WRR) scheduling, and automatic repeat request-based error control is analyzed in this letter. WRR scheduling can be used for service differentiation similar to that achievable by using the generalized processor sharing scheduling discipline. The analytical framework presented in this letter captures physical and radio link-level aspects of a multirate multiuser wireless network (e.g., general fading model, AMC, scheduling, error control) in a unified way. It can be used for admission control and cross-layer design under statistical delay constraints. The analytical results are validated by simulations. Typical numerical results are presented, and their useful implications on the system performance are discussed.

Published in:

Communications, IEEE Transactions on  (Volume:54 ,  Issue: 2 )

Date of Publication:

Feb. 2006

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