A flexible model for dimensioning mixed service 3G wireless networks

In this paper we present an approximate closed form solution for dimensioning mixed service 3G wireless networks for defined service and quality constraints. Both web-browsing services alone, as well as a mixture of web and circuit voice services are considered. Dimensioning is achieved through knowledge of the distribution of the latency delay experienced by end users of the 3G network. The parameters defining the distribution are shown to be dependent on a range of network and service parameters. This allows the dimensioning of 3G wireless networks under a wide range of quality and service conditions

A Performance Analysis of Timed Synchronous Communication Primitives

Two algorithms for timed synchronous communication between a single sender and single receiver have recently appeared in the literature. Each weakens the definition of correct timed synchronous communication in a different way, and exhibits a different undesirable behavior. In this paper, their performance is analyzed, and their sensitivity to various parameters is discussed. These parameters include how long the processes are willing to wait for communication to be successful, how well synchronized the processes are, the assumed upper bound on message delay, and the actual end-to-end message delay distribution. We conclude by discussing the fault tolerance of the algorithms, and propose a mixed strategy that avoids some of the performance problems

Representative queueing network models of computer systems in terms of time delay probability distributions

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