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Acquisition of Telecommunications Bandwidth Under Economies of Scale in Size and Duration of Contracts

机译：规模经济和合同期限下的经济规模下的电信带宽的获取

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摘要

Significant advances in information technology have brought about increased demand for bandwidth. Buyers of bandwidth often encounter bandwidth prices that are decreasing over time. Additionally, bandwidth prices at any point in time are decreasing in total bandwidth purchased and length of contracts. Therefore, buyers face complex decisions in terms of the number of contracts to buy, their bandwidth, and their lengths. In this article, we formulate models for the acquisition of bandwidth from a buyer's perspective. We begin with a model that allows varying contract durations under deterministic demand and without allowing shortages or overlapping contracts. We then formulate a simpler model, which restricts contract lengths over the planning horizon to be equal. We also solve the problem under probabilistic demand and allowing for shortages, which are satisfied by buying additional bandwidth at a premium. We perform numerical sensitivity analysis to compare the results of the models and illustrate the results with numerical examples. The numerical analyses illustrate that using relatively simple equal-length contracts produces approximately the same results as the more complicated unequal-length contract strategy.
机译：信息技术的重大进步带来了对带宽的不断增长的需求。带宽购买者经常会遇到带宽价格随时间下降的情况。此外，带宽价格在任何时间点都在降低所购买的总带宽和合同期限。因此，购买者在购买合同的数量，带宽和期限方面面临着复杂的决定。在本文中，我们从买方的角度制定了带宽获取模型。我们从一个模型开始，该模型允许在确定性需求下改变合同期限，并且不允许出现短缺或重叠合同。然后，我们制定一个更简单的模型，该模型将计划范围内的合同长度限制为相等。我们还解决了概率需求和允许短缺的问题，可以通过额外购买带宽来满足需求。我们进行数值敏感性分析以比较模型的结果，并用数值示例说明结果。数值分析表明，使用相对简单的等长合同可产生与更复杂的不等长合同策略大致相同的结果。

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