5G LTE Narrowband internet of Things (NB-IoT) presents the new 5G LTE NB-IoT technology based on Release 15, its protocol stack, architecture, operation, and challenges. The book covers different aspects of NB-IoT and provides necessary details about this technology while at the same time presents it, as much as possible, in simplistic views. The book focuses on providing comprehensive details about a single 5G LTE feature: the cellular narrowband Internet of Things (NB-IoT). NB-IoT is the next wireless technology to enable a world of digital connectivity in home, city, and building. NB-IoT connected devices are projected to reach a number of hundreds of thousands of connected devices per square kilometer. Chapter 2 introduces the history of LTE, NB-IoT devices, and their requirements and applications. Chapters 3 to 7 cover the core 3GPP protocol stack of NB-IoT and explain the RRC, PDCP, RLC, MAC, and PHY sublayers. Chapter 8 explains how the quality of service framework is supported in core network for NB-IoT devices. Finally, Chapter 9 covers uses cases and deployment recommendations for NB-IoT networks and devices. Book jacket.