Table of Contents

1 Scope   

2 References

3 Definitions

3.1          Terms defined elsewhere

3.2          Terms defined in this Recommendation

4 Abbreviations and acronyms

5 Conventions

6 Overview

7              Features of energy efficient D2D communication procedure

7.1 Architecture and methodology

7.2 Cluster formation in normal mode

7.3 Signalling and connection set up in normal mode

7.4 Discovery phase

7.5 Cluster formation in failure mode

Appendix I – Use cases of D2D communications in IMT-2020 networks

Appendix II – Gap analysis about D2D communications in related SDOs

Bibliography