Operations Research for Reliable and Sustainable Telecommunication Networks

互联网和互联网相关的技术和网络正处于一个深刻变革的阶段，在几个方面。首先，已经有一个显着的激增，社交网络和无线应用。其次，视频应用在无线和有线网络中的显着增长，预计在未来几年。这些变化对流量的性质以及网络可靠性和性能有重要影响，因为高清晰度视频或真实的时间游戏等极高带宽应用越来越受欢迎，并且必须与数据和语音等其他更传统的应用竞争带宽。服务提供商对带宽消耗应用的每一次新飞跃的经典回答是网络超尺寸化。此外，为了确保实时可靠性和性能，我们已经看到网络元素（如服务器群和路由器）的冗余增加。然而，由于以下原因，这种趋势不再可持续：1）大部分流量正在转移到无线介质，其严重的频谱限制限制了可用于即将到来的应用的带宽。2）互联网和ICT（互联网和通信技术）的能源消耗和环境影响不再可以忽略不计，如果不小心控制增长，预计将呈指数级增长。

The Internet and Internet-related technologies and networks are in a stage of profound transformation on several fronts.First, there has been a remarkable proliferation of social networking and wireless applications.Second, a significant increase in Video Applications both in wireless and in wireline networks is being forecasted in the coming years. These changes have an important impact on the nature of the traffic and on network reliability and performance, as very high-bandwidth applications, such as High Definition Video or real time gaming, gain popularity and have to compete for bandwidth with other more traditional applications such as data and voice.In the past, the classical answer of Service Providers to every new leap in bandwidth consuming applications has been network over-dimensioning. Moreover, to insure real-time reliability and performance, we have witnessed the increased redundancy of network elements,such as servers farms and routers. However, such a trend is no longer sustainable for the following reasons:1) Most of the traffic is shifting to the wireless medium, with its severe spectrum limitations that limits the bandwidth available for the forthcoming applications.2) The energy consumption and environmental impact of the Internet and the ICT (Internet and Communication Technology) is no longer negligible and is expected to increase exponentially if the growth is not carefully contained.