Abstract

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.

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