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Nowadays, licensed users (primary users, PUs) can provide a means for offering internet service for unlicensed users (secondary users, SUs). We explore the ability of cognitive mesh network (CMN) to offer quality of service (QoS) required by real time services, streaming multimedia and other applications. We consider the approach where PUs rent the surplus spectrum to SUs to get some reward. However,...
The packet switching techniques are under evolution. The conventional "best effort" approach will no longer be the dominant service. The next generation of IP networks must provide the QoS to customers. Inadequacy is obvious when the conventional capacity allocation (CA) models are applied to the new IP architecture. In this paper, we propose a CA model that characterizes (1) the service...
This paper studies throughput metrics for elastic traffic in a beyond 3G wireless system with QoS differentiation. We extend previous work by studying the capacity for elastic traffic subject to simultaneous variation due to the loading of higher priority traffic and the radio channel. The results yield novel insights that show: (i) load dependence in determining an optimal throughput metric, (ii)...
In this paper, we perform a tele-traffic queueing analysis for OFDM subcarrier allocation in wireless multiservice networks. For this purpose two call admission control algorithms, the batch blocking scheme and the partial blocking scheme, are proposed. Call connection requests are classified into two different types, narrow-band and wide-band. For either class of calls, the traffic process is characterized...
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