Overview of narrowband IoT in LTE Rel-13

摘要: In 3GPP Rel-13, a narrowband system, named Narrowband Internet of Things (NB-IoT), has been introduced to provide low-cost, low-power, wide-area cellular connectivity for the Things. This based on Long Term Evolution (LTE) technology, supports most LTE functionalities albeit with essential simplifications reduce device complexity. Further optimizations increase coverage, overhead and power consumption while increasing capacity have as well. The design objectives NB-IoT include low-complexity devices, high long battery life, massive capacity. Latency is relaxed although delay budget 10 seconds target exception reports. paper provides an overview design, including salient features from physical higher layers. Illustrative results respect performance are also provided. Finally, enhancements in Rel-14 briefly outlined.