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bandwidth reservation Using Velocity and Handoff Statistics for Cellular Networks

Journal of Computer Science & Technology 2006年第6期21卷 1031-1039页

作者：张传林林金耀贾维嘉 Department of Mathematics Jinan University Guangzhou 510632 P.R. China Department of Computer Science City University of Hong Kong P.R. China

The percentages of blocking and forced termination rates as parameters representing quality of services （QoS） requirements are presented. The relation between the connection statistics of mobile users in a cell and the handoff number and new call number in next duration in each cell is explored. Based on the relation, statistic reservation tactics are raised. The amount of bandwidth for new calls and handoffs of each cell in next period is determined by using the strategy. Using this method can guarantee the communication system suits mobile connection request dynamic. The QoS parameters： forced termination rate and blocking rate can be maintained steadily though they may change with the offered load, Some numerical experiments demonstrate this is a practical method with affordable overhead.

关键词： mobile communication bandwidth reservation forced termination rate

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Pricing the spare bandwidth: towards maximizing data center's profit

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Science China(Information Sciences) 2016年第10期59卷 50-59页

作者： Yong ZHAN Du XU Hongfang YU School of Communication & Information Engineering University of Electronic Science and Technology of China

To provide tenants with predictable network performance, tenants are allowed to purchase specified amount of data center network(DCN) resources(e.g., bandwidth). Then, data center will reserve the purchased resources for the corresponding tenants. Meanwhile, some DCNs are work conserving, which means that the spare bandwidth will be fairly shared by all active tenants. Even though the amount of the spare bandwidth is stochastic and uncertain, DCN providers are not likely to give away it for free. Thus, data center with work conserving may impose extra payment on tenants for using the spare bandwidth. In this paper, we propose a suitable tariff to charge for the usages of DCN resources, which includes a bill for the usage of the spare bandwidth. Through theoretical analysis and simulation, we demonstrate that our tariff can incentivize tenants to adjust their purchases of bandwidths, which can lead to the improvement of data center's profit by 27.4%without impairing the social welfare.

关键词： spare bandwidth data center network(DCN) bandwidth reservation work conserving pricing/tariff

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