Machine to Machine (M2M) communication represents a significant growth opportunity for the 3GPP ecosystem. To support the so called 'Internet of Things' (IoT), 3GPP operators have to address usage scenarios with devices that are power efficient (with battery life of several years), can be reached in challenging coverage conditions e.g. indoor and basements and, more importantly, are cheap enough so that they can be deployed on a mass scale and even be disposable. The study on which this technical report is based has considered both the possibility of evolving the current GERAN system and the design of a new access system to meet the requirements for a Cellular IoT system for the lower data rate end of the M2M market. A summary of deployment scenarios and requirements that are relevant for Cellular IoT is provided in Annex A. Techniques captured in this report have been developed based on the assumption that Cellular IoT devices require very low throughput, do not have stringent delay requirements like those required for real time services, do not need to support circuit switched services, do not need to support Inter-RAT mobility and will perform intra-RAT mobility by cell reselection.

The present document contains the outcomes of the 3GPP study item on, 'Cellular System Support for Ultra Low Complexity and Low Throughput Internet of Things'. The following are covered by the study:

• Objectives of the study.
• Evaluation methodology.
• Summary of physical layer aspects and higher layer aspects for different candidate techniques proposed during the study to fulfil the objectives.
• Common assumptions used in the evaluation of candidate techniques.
• Evaluation of network architecture aspects. Link level and system level performance evaluations based on the objectives and evaluation methodology.

The following documents contain provisions which, through reference in this text, constitute provisions of the present document.

• References are either specific (identified by date of publication, edition number, version number, etc.) or non specific.
• For a specific reference, subsequent revisions do not apply.
• For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.