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Coverage enhancement techniques for machine-to-machine communications over LTE

机译:LTE上的机器对机器通信的覆盖增强技术

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摘要

The tremendous growth of machine-tomachine (M2M) applications has been a great attractor to cellular network operators to provide machine-type communication services. One of the important challenges for cellular systems supporting M2M terminals is coverage, because terminals can be located in spaces in buildings and structures suffering from significant penetration losses. Since these terminals are also often stationary, they are permanently without cellular coverage. To address this critical issue, the third generation partnership project (3GPP), and in particular its radio access network technical specification group, commenced work on coverage enhancement (CE) for long-term evolution (LTE) systems in June 2013. This article reviews the CE objectives defined for LTE machine-type communication and presents CE methods for LTE downlink and uplink channels discussed in this group. The presented methods achieve CE in a spectrally efficient manner and without notably affecting performance for legacy (non- M2M) devices.
机译:机器对机器(M2M)应用程序的巨大增长吸引了蜂窝网络运营商提供机器类型的通信服务。支持M2M终端的蜂窝系统面临的重要挑战之一是覆盖范围,因为终端可能位于遭受重大渗透损失的建筑物和结构中的空间中。由于这些终端也常常是固定的,因此它们永久没有蜂窝覆盖。为了解决这个关键问题,第三代合作伙伴计划(3GPP),尤其是其无线接入网络技术规范小组,于2013年6月开始了针对长期演进(LTE)系统的覆盖增强(CE)的工作。针对LTE机器类型通信定义的CE目标,并提出了该组中讨论的LTE下行链路和上行链路信道的CE方法。提出的方法以频谱有效的方式实现了CE,而没有显着影响传统(非M2M)设备的性能。

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