End-to-End Queue Dimensioning in IP Networks with Heterogeneous Traffic
End-to-End Queue Dimensioning in IP Networks with Heterogeneous Traffic

Summary/Abstract: In this paper we highlight the problem with the router interface overflows and its influence of the end-to-end Quality of Service when heterogeneous traffic is considered. We mix real-time and non-real-time services as voice with data, prepare a model on GPSS and show the dependence between the waiting time, queue length, interface occupancy and the traffic load, priorities, jitter buffer. The results show that in normal working conditions the occupancy of the router interface can exceed 0,75 without specific influence on the Quality of Service. The end-to-end delay requirements cannot be guaranteed with all types of codecs and especially with those that have long jitter buffer. The work can be enriched by adding additional new behaviour for multicasting and multihoming, data retransmission in mesh networks, instability of the connections in DTN and ad hoc networks.

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