Similarity detection for smart and transparent longrange IoT relaying LPWAN refers to highly energyefficient wireless communication over very long distances. Nonetheless, even with the increased range, 1hop connectivity can be difficult to achieve in realworld deployment scenario, especially for remote and rural areas where density of gateways is low and where devicesgateway are usually deployed for a specific application. Therefore a smart and transparent 2hop approach has been proposed in a previous work to leverage these connectivity issues. This article extents this approach with similarity detection features in order to (i) reduce the power consumption when wakingup to relay packets and (ii) reduce the radio activity time when running under dutycycle regulated constraints.

Test and Measurement of LPWAN and Cellular IoT Networks in a Unified Testbed One of the main requirements of spatially distributed Internet of Things (IoT) solutions is to have networks with wider coverage to connect many lowpower devices. LowPower WideArea Networks (LPWAN) and Cellular IoT(cIOT) networks are promising candidates in this space. LPWAN approaches are based on enhanced physical layer (PHY) implementations to achieve long range such as LoRaWAN, SigFox, MIOTY. Narrowband versions of cellular network offer reduced bandwidth and, simplified node and network management mechanisms, such as Narrow Band IoT (NBIoT) and LongTerm Evolution for Machines (LTEM). Since the underlying use cases come with various requirements it is essential to perform a comparative analysis of competing technologies. This article provides systematic performance measurement and comparison of LPWAN and NBIoT technologies in a unified testbed, also discusses the necessity of future fifth generation (5G) LPWAN solutions.