MIMO strategies for energy efficient transmission in LTE pico-cell environments
MIMO strategies for energy efficient transmission in LTE pico-cell environments
复制标题
LTE 微微蜂窝环境中节能传输的 MIMO 策略
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
L. Correia
中科院分区：
文献类型：
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作者：
F. Cardoso;R. T. Duran;C. Desset;L. Correia
移动数据流量正以前所未有的速度增长。为了解决这个问题，运营商正在部署小型基站来覆盖热点。然而，这也增加了整个网络的能源消耗和碳足迹。因此，提高小型基站的能源效率仍然是一个热门话题。本文研究了LTE微蜂窝环境下的节能传输，旨在为LTE网络优化和减少碳足迹提供基础。MIMO是从能源效率的角度来研究的，而不是从文献中通常发现的增加数据量的角度。此外，还考虑了时间和频率的占空比，从而提高了可以实现的功率降低量。在全局范围内，在最坏情况下的功耗和最优选择的MIMO模式之间的变化因子是12倍。
Mobile data traffic is increasing at an unprecedented rate. To cope with this, operators are deploying small base station sites to cover hot spots. However, this also increases the total network energy expenditure and carbon footprint. As a consequence, improving the energy efficiency of small base stations remains a hot topic. In this paper energy efficient transmission in LTE pico-cell environments is addressed aiming at providing a basis for LTE networks optimization and carbon footprint reduction. MIMO is studied from an energy efficiency point of view rather than from an increased datarates perspective as usually found in literature. Additionally, duty-cycling in time and frequency is also considered, hence, improving the amount of power reduction that can be achieved. Globally, a factor of twelve times variation between the worst-case power consumption and the optimally selected MIMO mode is observed in pico-cells.