This paper proposes a criterion with which to differentiate classes of service on the basis of an available bandwidth metric. As the service classes are differentiated in terms of their available bandwidth values, the difference between neighboring classes must be proportional to the square of the available bandwidth of the current class. This statement is equivalent to saying that the difference in packet delay between neighboring service classes is constant. The ratios connecting minimum delay, network jitter and packet proportion are derived for different classes. Experiments carried out using an NS-2 network simulator illustrate the efficiency of the proposed criterion.
G.Armitage, B.Carpenter, A.Casati, J.Crowcroft, J.Halpern, B.Kumar and J.Schnizlein, Bound alternative revision of RFC 2598, RFC 2598, March 2002.
2.
S.Blake, D.Black, M.Carlson, E.Davies, Z.Wang and W.Weiss, An architecture for differentiated services, IETF RFC 2475, December 1998.
3.
U.Bodin, A.Jonsson and O.Scheln, On creating proportional loss-rate differentiation: Predictability and performance, in: Quality of Service – IWQoS, Lecture Notes in Computer Science, Vol. 2092, Springer, Heidelberg, 2001, pp. 372–386.
4.
R.Braden, D.Clark and S.Shenker, Integrated services in the Internet architecture: An overview, IETF RFC1633, July 1994.
5.
B.Y.Choi, S.Moon and Z.L.Zhang, Analysis of point-to-point packet delay in an operational network, in: INFOCOM 2004, Hong Kong, 2004, pp. 1797–1807.
6.
B.Davie, F.Baker, J.Bennet, K.Benson, J.Y.Le Boudec, A.Chamy, A.Chiu, W.Courtney, S.Davari, V.Firoiu, C.Kalmanek, K.K.Ramakrishnain and D.Stiliadis, An expedited forwarding PHB, 2002.
7.
C.Dovrolis, Proportional differentiated services for the Internet, PhD dissertation, University of Wisconsin, Madison, 2000.
8.
C.Dovrolis, P.Ramanathan and D.Moore, Packet-dispersion techniques and a capacity-estimation methodology, IEEE/ACM Transactions on Networking12(6) (2004), 963–977.
9.
C.Dovrolis and P.Ramanathann, Proportional differentiated services, Part II: Loss rate differentiation and packet dropping, in: Eighth International Workshop on Quality of Service (IWQOS), IEEE, 2000, pp. 53–61.
10.
A.B.Downey, Using pathchar to estimate Internet link characteristics, in: Proceedings of ACM SIGCOMM, 1999, pp. 222–233.
11.
A.A.Galtsev, A.M.Sukhov, N.Y.Kuznetsova and A.K.Pervitsky, The distribution function of the packet delay in a global network for problems of control theory, Telecommunications12 (2010), 10–16.
V.Jacobson, K.Nichols and K.Poduri, An expedited forwarding PHB, IETF RFC 2598, June 1999.
14.
M.Jain and C.Dovrolis, End-to-end estimation of the available bandwidth variation range, in: SIGMETRICS’05, Alberta, Canada, 2005.
15.
J.Liebeherr and N.Christin, Joint buffer management and scheduling for differentiated services, in: Proceedings of IEEE/IFIP Ninth International Workshop on Quality of Service (IWQoS 2001), Karlsruhe, Germany, 2001, pp. 404–418.
16.
J.Liebeherr and N.Christin, Rate allocation and buffer management for differentiated services, Computer Networks40(1) (2002), 89–110.
17.
Y.Moret and S.Fdida, A proportional queue control mechanism to provide differentiated services, in: Proceedings of the International Symposium on Computer and Information Systems (ISCIS), 1998, pp. 17–24.
18.
V.Ribeiroet al., PathChirp: Efficient available bandwidth estimation for network paths, in: Proceedings of Passive and Active Measurements Workshop, April 2003, 2003.
19.
A.M.Sukhov and T.G.Sultanov, Simulation technique for available bandwidth estimation, in: Proceedings of IEEE European Modeling Symposium, 2010, pp. 490–495.
20.
A.M.Sukhov, T.G.Sultanov and D.Y.Polukarov, The method of available bandwidth estimation of IP-connection based on variable packet size, Elektrosvyaz11 (2012), 39–42.
