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NB-IoT Optimization on Paging MCS and Coverage Level

With growing popularity of Internet of Things (IoT), Low Power Wide Area (LPWA) technologies are getting more interests. Narrowband Internet of Things (NB-IoT) is a LPWA technology specified by 3rdGeneration Partnership Project (3GPP) and in the initial stage of commercialization. The performance of NB-IoT network needs to be optimized in downlink as well as uplink for reliable quality of NB-IoT services. In this paper, we provide optimization cases of modulation and coding scheme (MCS) for paging in multicell interference environments in terms of paging success rate in NB-IoT downlink. We also present optimization cases of coverage level (CL) in a commercial NB-IoT network environment with various driving speed in terms of random access channel (RACH) success rate in NB-IoT uplink.