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arXiv 1403.0965cs.ITcs.NImath.IT
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毫米波通信的设计挑战:MAC层透视

Design Challenges of Millimeter Wave Communications: A MAC Layer Perspective

Hossein Shokri-Ghadikolaei, Carlo Fischione, Gabor Fodor, Georgios Athanasiou

摘要:

由于对强大数据量的指数级需求,频谱变得越来越稀缺,新的毫米波(mmW)频带被认为是5G通信的支持者,以提供多千兆比特的无线接入。MmW通信表现出高衰减和阻塞、由于大规模波束成形的方向性、耳聋、低干扰,并且可能需要微波网络进行协调和回退支持。当前的mmW配置受到由这种异构通信系统和mmW频带特性给出的压倒性复杂度的挑战。这需要在所有层上开发新的实质性协议。本文综述了毫米波通信中的介质访问控制问题。它被讨论,而现有的标准解决了这些问题的个人和局域网,很少有做蜂窝网络。有人认为,介质访问控制层应配备适应机制,知道特殊的毫米波特性。提供了5G中mmW介质访问控制设计的建议。它的结论是,毫米波的高效访问控制技术的设计是在其起步阶段,还有很多工作要做。

英文摘要:

As the spectrum is becoming more scarce due to exponential demand of formidable data quantities, the new millimiterwave (mmW) band is considered as an enabling player of 5G communications to provide multi-gigabits wireless acccess. MmW communications exhibit high attenuation and blockage, directionality due to massive beamforming, deafness, low-interference, and may need micro waves networks for coordination and fallback support. The current mmW standardizations are challenged by the overwhelming complexity given by such heterogeneous communication systems and mmW band characteristics. This demands new substantial protocol developments at all layers. In this paper, the medium access control issues for mmW communications are reviewed. It is discussed that while existing standards address some of these issues for personal and local area networks, little has been done for cellular networks. It is argued that the medium access control layer should be equipped with adaptation mechanisms that are aware of the special mmW characteristics. Recommendations for mmW medium access control design in 5G are provided. It is concluded that the design of efficient access control techniques for mmW is in its infancy and much work still has to be done.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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