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Solution to weight-adaptive fair queuing

Solution to weight-adaptive fair queuing

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The weighted fair queuing (WFQ) suffers from the transmission disorder problem while applying adaptive weight adjustment since its virtual time implementation does not yield the correct approximation of the generalised processor sharing scheme under weight adjustments. This is because the backlogged packets' timestamps are not updated properly with the change of weights. A new algorithm, timestamp-update WFQ (T-WFQ), is proposed to avoid the above problem by updating the timestamps of all the backlogged packets as soon as the weight adjustment takes place.

References

    1. 1)
      • Wang, L., Fayek, D., Sivananthan, T.: `A bandwidth bargain model based on adaptive weighted fair queueing', 10thIEEE/IFIP Network Operations and Management Symp., 2006, Vancouver, Canada, p. 1–4.
    2. 2)
      • A.K. Parekh , R.G. Gallager . A generalized processor sharing approach to flow control in integrated services networks: the single-node case. IEEE/ACM Trans. Netw. , 3 , 344 - 357
    3. 3)
      • Homg, M.-F., Lee, W.-T., Lee, K.-R., Kuo, Y.-H.: `An adaptive approach to weighted fair queue with QoS enhanced on IP network', Proc. of IEEE Region 10 Int. Conf. on Electrical and Electronic Technology, August 2001, Singapore, 1, p. 181–186.
    4. 4)
      • Wallenius, E., Joutsensalo, Y., Hamalainen, T.: `Revenue and delay control in 3G service network', IEEE 60th Vehicular Technology Conf., Sepember 2004, Los Angeles, California, USA, 6, p. 4390–4394.
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