Informatica

A wise cost-effective supplying bandwidth policy for multilayer wireless cognitive networks
Computers & Operations Research, Volume 39, Issue 11, November 2012, Pages 2836-2847
G. Aloi, R.Musmanno, P. Pace, O. Pisacane
Abstract
Inventory management is one of the most important research areas in Operations Research and Logistics. It mainly aims to efficiently manage inventories atdifferent facilities (for example, warehouses and plants in Supply Chains (SCs)), minimizing the total cost and satisfying the service levels. Some exact inventories management approaches are successfullyproposed and applied to different real scenarios, traditionally related to the SCs, even if the extreme versatility of these techniques could make them attractive to new challenging scenarios such asthose related to telecommunications networks. Starting from this vision, the focus of this paper is to show the new benefits of applying an adaptive period inventory management policy to a wirelesscognitive telecommunication scenario in which radio transmission resources are treated as short-term life time goods which supplies wisely in order to maximize both economic profit and quality of serviceoffered to wireless users. The system behavior is tested using an agent-based simulator and computational results show that introducing this wise control on the bandwidth supplying mechanismguarantees a more reactive and effective telecommunication network, reaching a good compromise between the total profit and the service levels.

Set-based broadcast scheduling for minimizing the worst accesstime of multiple data items in wireless environments
Information Sciences, Volume 199, 15 September 2012, Pages 93-108 Jen-Ya Wang
Abstract
In wireless environments, data broadcast can offerunlimited mobile users up-to-date and shareable information in the meantime. Traditional schemes favor popular queries and thus sacrifice unpopular queries. This paper considers a broadcast scheduling...