ABSTRACT
In this chapter, the existing proposals and standardization efforts for M2M communications will be presented. Standardization of M2M communications and systems is mainly covered by two standardization bodies, namely, 3rd-generation partnership project (3GPP) and European Telecommunications Standards Institute (ETSI). Basically, there are two reference architecture proposals: the one defined by 3GPP, namely, 3GPP machine-type communications (MTC), and the other one defined by ETSI, namely, ETSI machine-to-machine (M2M) architecture. There is also an ETSI M2M initiative toward defining a combined ETSI/3GPP architectural model [1]. The main focus of 3GPP MTC recommendations is on communications, while ETSI M2M focuses more on applications. Other research activities for further improvement of existing networks toward
2.1 3GPP MTC Architecture 32 2.2 ETSI Architecture for M2M 38
2.2.1 System Architecture and Domains 39 2.2.2 ETSI SC Framework and Reference Points 42 2.2.3 Resources 46 2.2.4 3GPP and ETSI 46
2.3 EXALTED System Architecture 47 2.3.1 Components in the ND 51 2.3.2 Components in the DD 53
References 54
M2M communications and applications are included in framework programme 7 (FP7) projects. One of the most dedicated projects to M2M communication architecture is the expanding LTE for devices (EXALTED) FP7 project [2]. The aim of EXALTED is to lay out the foundations of a new scalable network architecture supporting the most challenging requirements for future wireless communication systems and providing secure, energy-efficient, and cost-effective M2M communications suitable for low-end devices. The research areas of EXALTED include the long term evolution for MTC (LTE-M) system that extends long term evolution (LTE) specifications for M2M communication, advanced mobile networking capabilities that establish a comprehensive end-to-end (E2E) architecture for M2M systems as a stepping stone toward the future Internet of things, lowcost automated security and provisioning solutions for M2M over LTE, and device improvement enabling enhanced autonomy in the scope of M2M services. Baseline architectures considered for the work in the EXALTED are the aforementioned 3GPP MTC and ETSI M2M architectures. However, the goal of EXALTED is not to simply adopt these architectures but to establish a complete architecture with additional options.
