Delay analysis of extended rtPS for VoIP service in IEEE 802.16e by matrix analytic method

Kyung Kim, Bara Kim, Ji Um, Jung Son and Bong Choi ()

Annals of Operations Research, 2008, vol. 162, issue 1, 85-107

Abstract: Extended real time polling service (ErtPS) is added to IEEE 802.16e-2005 standards in order for VoIP service to use uplink resources efficiently by considering on/off characteristic of voice source. Recently average queueing delay of ErtPS algorithm for VoIP service was investigated, and it was shown that ErtPS allows to admit more users than UGS algorithm. But we need the probability distribution of queueing delay rather than average queueing delay in order to provide a necessary information for QoS. In this paper we obtain the probability distribution of queueing delay of ErtPS for VoIP service by using the matrix analytic method for the GI/M/1 type and the M/G/1 type matrices in cases of the service time being exponential and deterministic respectively. By applying the results on deterministic service time we find the maximum allowable number of VoIP users with the required constraint on queueing delay. Copyright Springer Science+Business Media, LLC 2008

Date: 2008
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DOI: 10.1007/s10479-008-0316-3

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