By Sayed Vahid Azhari, Nasser Yazdani, Ali Mohammad Zareh Bidoki (auth.), Hyun-Kook Kahng (eds.)
This booklet constitutes the completely refereed post-proceedings of the overseas convention on details Networking, ICOIN 2003, held at Cheju Island, Korea in February 2003.
The a hundred revised complete papers provided have been rigorously chosen in the course of rounds of reviewing and revision. The papers are equipped in topical sections on high-speed community applied sciences, greater net protocols, QoS within the net, cellular net, community safeguard, community administration, and community performance.
Read Online or Download Information Networking: International Conference, ICOIN 2003, Cheju Island, Korea, February 12-14, 2003.Revised Selected Papers PDF
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Extra info for Information Networking: International Conference, ICOIN 2003, Cheju Island, Korea, February 12-14, 2003.Revised Selected Papers
Because of the long settling time relative to the very short rise with very small damping ratio, the TCP ﬂows show severely oscillating dynamics. Therefore, a well designed AQM controller should be able to compensate the oscillatory TCP dynamics and give satisfactory control performance. 2 RED and PI-controller With RED , a link maintains the EWMA queue length, Qavg = (1 − wQ ) ∗ Qavg + wQ ∗ Q, where Q is the current queue length and wQ is a weight parameter, 0 ≤ wQ ≤ 1. When Qavg is less than the minimum threshold (minth ), no packets are dropped.
5), we are dealing with a cyclic type multi-queue system with the limited service discipline , which is interrupted by a high priority queue (Q6). In general, there is not any solution for multi-queue systems under limited service discipline and only some complex algorithms are proposed (such as algorithm which is proposed by Tedijianto in ). In this article, in order to calculate the mean waiting time for Q1 to Q5, we use a model called ”Vacation model”. A vacation model is composed of a single queue and a single server.
Particularly, once the sampling frequency (fs = 1/Ts ) is decided analytically or empirically, the digitized PID control equation is obtained using Tustin’s method 30 Seungwan Ryu and Christopher Rump for integration and the backward rectangle method for diﬀerentiation . The packet drop probability at time k = t/Ts = 0, 1, . . is pk = pk−1 + ∆pk = pk−1 + a1 ek − b1 ek−1 + c1 ek−2 , where a1 = KP + Qk − Qref . 2 KD Ts + Ts 2TI , b1 = KP + 2KD Ts − Ts 2TI , c1 = (10) KD Ts and ek = Tuning of PID Control Parameters Although we can explore the key factor governing the TCP/AQM dynamics through simpliﬁed theoretical analysis, this simpliﬁcation may introduce substantial error .