The bandwidth crunch: Can wireless technology meet the skyrocketing demand for mobile data?
The bandwidth crunch: Can wireless technology meet the skyrocketing demand for mobile data?
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DOI：
10.1109/lisat.2011.5784228
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发表时间：
2011-05
期刊：
影响因子：
--
通讯作者：
R. Difazio;P. Pietraski
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文献类型：
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作者：
R. Difazio;P. Pietraski
对智能手机和平板电脑推动的移动数据流量增长的预测比比皆是，这些手机和平板电脑的预期是随处可见的宽带互联网连接，以及对高质量视频的需求。FCC的国家宽带计划表明，2009年至2014年，北美的移动数据流量将增长约20至45倍，目前的数据表明，这些数字可能会超过这些数字。本白皮书探讨无线技术如何应对带宽挑战。我们不仅考虑蜂窝技术的轨迹，还考虑承诺提高频谱效率、使用新频谱并依赖于新网络架构的新方法。我们回顾了从第二代到LTE-Advanced的蜂窝演进，解决了协调多点传输(CoMP)等增强技术，并研究了其他创新的多蜂窝技术。讨论了对蜂窝体系结构的更雄心勃勃的改变，例如中继节点和终端到终端通信。微微蜂窝、毫微微蜂窝和前瞻性密集部署是很有前途的方法。考虑了新的频谱，包括使用电视白空间。我们提供一个量化评估--也许是一个目标，也许是另一个预测--评估可以实现什么。
Predictions abound on the growth of mobile data traffic driven by smart phones and tablet PCs that come with an expectation of broadband Internet connectivity everywhere and a demand for high quality video. The FCC's National Broadband Plan indicated that mobile data traffic in North America would increase by roughly 20 to 45 times between 2009 and 2014, and current data suggests these numbers may be exceeded. This paper examines how wireless technology can address the bandwidth challenge. We consider not only the track of cellular technology, but new approaches that promise improved spectral efficiency, use new spectrum, and rely on new network architectures. We recap cellular evolution from second generation through LTE-Advanced, address enhancements such as Coordinated Multipoint Transmission (CoMP) and examine other innovative multi-cell technology. More ambitious changes to cellular architecture such as relay nodes and terminal-to-terminal communications are discussed. Pico-cells, femto-cells, and forward-looking dense deployments are presented as promising approaches. New spectrum, including the use of TV white space is considered. We provide a quantitative assessment -perhaps a goal or perhaps another prediction - of what can be achieved.