Dimensioning and optimization of push-to-talk over cellular server
Alam, M. & Wu, Z. D. (2008). Dimensioning and optimization of push-to-talk over cellular server. International journal of network management, 18(1), 47-63.
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2008 HERDC submission. FoR Code: 1005
Copyright © 2007 John Wiley & Sons, Ltd.
The PoC (push-to-talk over cellular) application allows point-to-point or point-to-multipoint voice communication between mobile network users. The related work over PoC focuses on the performance analysis only and is ignorant about dimensioning a PoC controller to optimize revenue for service providers. In this paper, we dimension a PoC service with the assumption that the network grade of service is provided. The on-demand sessions should have access priority over pre-established sessions. A PoC controller should be able to terminate a PoC session based on an optimal timer. Moreover, the number of simultaneous session initiations by a PoC client is also a configurable parameter. We derived relations to provide access priority to special PoC sessions based on available transmit/receive units (TRU) and threshold level. Load sharing expressions are reported for a PoC controller using the Lagrange multiplier technique. A simple relation to control the PoC session timer is proposed. Finally, the derivation of maximum number of allowable simultaneous sessions is depicted using two-state Markov models. Numerical results have been computed with the corresponding derivation to provide a useful insight into the system behaviour. APoC service can benefit from these optimal values of our work during the busy hour.
Muhammad T. Alam and Zheng da Wu. "Dimensioning and optimization of push-to-talk over cellular server" International journal of network management 18.1 (2007): 47-63.
Available at: http://works.bepress.com/zheng_da_wu/22