Lte-M Evolution Towards 5g Massive Mtc
2017 IEEE GLOBECOM WORKSHOPS (GC WKSHPS)(2017)
摘要
Massive machine type communication (mMTC) has been identified as an important use case for 5G New Radio wireless technology. In 4G Long-Term Evolution (LTE), 3GPP has previously introduced LTE-M for low-power, wide-area networks supporting the Internet of Things. Rel-13 specifications for LTE-M were completed in 2016. Rel-14 enhancements were completed in 2017 while Rel-15 enhancements are ongoing and expected to be completed in 2018. In this paper, we provide an overview of LTE-M and describe its evolution in subsequent releases. The features of the technology that have specifically been designed for mMTC are discussed. In addition, we present evaluations of LTE-M against 5G performance targets and show that mMTC requirements can be satisfied by LTE-M. To meet the 5G mMTC requirements, 3-dB power spectral density boosting is used in the downlink. In addition, for some requirements, 4 receive antennas at the eNB are required instead of the more typical 2 receive antennas. Thus, LTE-M will comprise an important component of 5G New Radio technology.
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关键词
LTE-M,low power wide area cellular IoT,5G massive MTC
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