IoT är en marknad som har växt fort under de senaste åren och skapat sig en egen industri. Kärnan i IoT är internetanslutningen och i många fall är mobil kommunikation den bästa lösningen för en IoT-produkt. Problemet är att det inte finns något självklart val av mobil kommunikation för användning i en IoT-produkt. Den mobila kommunikationsbranschen har reagerat på det nya behovet av mobil kommunikationsstandard för IoT och 2016 släppte 3GPP en ny standard av typen LPWAN kallad NB-IoT. Flera företag verkar för att implementera denna standard, och det finns ett behov av att undersöka hur applikationer kan utnyttja standarden på ett effektivt sätt. Denna uppsats presenterar en jämförelse mellan två applikationer som använder olika ALP, HTTP och CoAP, i en LPWAN-kontext. Resultaten av denna jämförelse visar att det finns mycket att vinna på att välja CoAP istället för HTTP, speciellt i en IoT-miljö som applikationerna presenterade i denna uppsats. Uppsatsen presenterar även en samling egenskaper som en applikation bör ha för att utnyttja en LPWAN-kommunikationsstandard effektivt. / The Internet of Things (IoT) is a market that has grown very fast in the last few years,creating an industry of its own. The core of IoT is the Internet connectivity and many times, the best solution for an IoT device is to use some form of mobile connection to solve this. The problem is that there is no obvious choice of mobile communication standard for use in an IoT device. The mobile communications industry has reacted to this newly emerged need of amobile communications standard designed for the IoT domain and in 2016 the 3rd Generation Partnership Project (3GPP) released a Low-Power Wide-Area Network (LPWAN) type of standard named Narrowband IoT (NB-IoT). Several companies are working on implementing this standard, and there is a need to investigate how applications can utilize the standard effectively. This thesis presents a comparison between two applications using different ApplicationLayer Protocol (ALP)s, Hyper-Text Transfer Protocol (HTTP) and Constrained Application Protocol (CoAP), in an LPWAN context. The results of this comparison shows that there is a lot to gain by choosing CoAP over HTTP, especially in an IoT environment such as the applications presented in this thesis. The thesis also presents a collection of properties that applications should have to use an LPWAN effectively.

Diploma thesis deals with the implementation of LTE Cat-M1 technology in simulator NS--3 (Network Simulator 3). The theoretical part of the thesis summarizes key terms concerning IoT (Internet of Things), M2M (Machine-to-Machine) communication, LTE (Long Term Evolution) and LPWA (Low-Power Wide Area) networks. The practical part summarizes the possibilities of currently available modules for cellular technologies for NS-3, ie. the LENA module and the subsequent extension of LENA+ and ELENA. Simulation scenarios offer a comparison of LTE/LTE-A and LTE Cat-M1 (also known as eMTC - enhanced Machine Type Communication) technologies for M2M communication. The results of the simulations are well-arranged in the form of graphs and discussed at the end of the thesis.

The Diploma work deals with the implementation of LTE Cat-M technology in the simulation tool Network Simulator 3 (NS-3). The work describe LPWA technologies and their use cases. In first are described the main parts of the Internet of Things (IoT) and Machine-to-Machine (M2M) communication. Subsequently are described and defined the most used technologies in LPWA networks. Technologies which are used in the LPWA networks are Sigfox, LoRaWAN, Narrowband IoT (NB-IoT) and Long Term Evolution for Machines (LTE Cat-M), where LTE Cat-M technology is described in more details. Simulations are simulated in simulation tool NS-3 and use LENA module. In NS 3 tool are simulated Simulations, which give us informations of Network state according to different Network set up. At the end are done changes of Radio Resource Control (RRC) states in NS-3 tool. These changes are required for correct implementation LTE Cat-M technology in NS-3 tool. Then we are able to simulate simulations, which meet to definition of LTE Cat-M technology.