4 research outputs found
The Switched Local Area Networks’ Delay Problem: Issues and a Deterministic Solution Approach
A large number of installed local area networks are sluggish in terms of speed of uploading and down-
loading of information. Researchers have, therefore, proposed the need for such networks to be designed
with specified maximum end-to-end delay. This is because, if the maximum packet delay between any
two nodes of a network is not known, it is impossible to provide a deterministic guarantee of worst case
response times of packets’ flows. Therefore, the need for analytic and formal basis for designing such
networks becomes very imperative. In this regard, this chapter has discussed the switched local area
networks’ delay problem and related issues. It compared the two principal approaches for determining
the end-to-end response times of flows in communication networks – stochastic approach and determin-
istic approach. The chapter goes on to demonstrate the superiority of the latter approach by using it to
develop and validate the goodness of a general maximum delay packet switch model
Markov Models of Telephone Speech Dialogues
Analogue speech signals are the most natural form of communication among humans. The contemporary methods adopted for the analysis of voice transmission by packet switching were designed mainly with respect to a Poisson stream of input packets, for which the probability of an active packet on each input port of the router is a constant value in time. An assumption that is not always valid, since the formation of speech packets during a dialogue is a non-stationary process, in which case mathematical modeling becomes an effective method of analysis, through which necessary estimates of a network node being designed for packet transmission of speech may be obtained. This paper presents the result of analysis of mathematical models of Markov chain based speech packet sources vis-Ă -vis the peculiarities of telephone dialogue models. The derived models can be employed in the design and development of methods of statistical multiplexing of packet switching network nodes
Markov Models of Statistical Multiplexing of Telephone Dialogue with Packet Switching
Existing methods of analysis of voice transmission
by packet switching were designed mainly with respect to a
Poisson stream of input packets, for which the probability of
an active packet on each input port of the router is a constant
value in time. This assumption is not always valid, since the
formation of speech packets during a dialogue is a nonstationary
process, in which case mathematical modeling
becomes an effective method of analysis, through which
necessary estimates of a network node being designed for
packet transmission of speech may be obtained. This paper
presents the result of analysis of mathematical models of
Markov chain based speech packet sources vis-Ă -vis the
peculiarities of telephone dialogue models. The derived models
can be employed in the design and development of methods of
statistical multiplexing of packet switching network nodes