2 research outputs found
Study of Queueing Behaviour in IP Buffers
It is unquestioned that the importance of IP network will further increase and that it will serve as a
platform for more and more services, requiring different types and degrees of service quality. Modern
architectures and protocols are being standardized, which aims at guaranteeing the quality of service delivered to
users. In this paper, we investigate the queueing behaviour found in IP output buffers. This queueing increases
because multiple streams of packets with different length are being multiplexed together. We develop balance
equations for the state of the system, from which we derive packet loss and delay results. To analyze these types
of behaviour, we study the discrete-time version of the “classical” queue model M/M/1/k called Geo/Gx/1/k, where
Gx denotes a different packet length distribution defined on a range between a minimum and maximum value
Towards Useful Overall Network Teletraffic Definitions
A detailed conceptual and a corresponding analytical traffic models of an overall (virtual) circuit
switching telecommunication system are used. The models are relatively close to real-life communication
systems with homogeneous terminals. In addition to Normalized and Pie-Models Ensue Model and Denial Traffic
concept are proposed, as a parts of a technique for presentation and analysis of overall network traffic models
functional structure; The ITU-T definitions for: fully routed, successful and effective attempts, and effective traffic
are re-formulated. Definitions for fully routed traffic and successful traffic are proposed, because they are absent
in the ITU-T recommendations; A definition of demand traffic (absent in ITU-T Recommendations) is proposed.
For each definition are appointed: 1) the correspondent part of the conceptual model graphical presentation; 2)
analytical equations, valid for mean values, in a stationary state. This allows real network traffic considered to be
classified more precisely and shortly. The proposed definitions are applicable for every telecommunication
system