Acknowledgements This Technical Report was researched and principally authored by Mike Wood (Telstra) and Jack Rowley (GSMA) with oversight and contributions from Gilbert Buty and Christophe Grangeat (Alcatel‐Lucent); Hector Carril (Secretaría de Comunicaciones de la Nación, Argentina); Pablo Bilbao (Argentine Federation of Municipalities ‐ FAM); Josette Gallant and Hughes Nappert (Industry Canada); Brian Copsey (Copsey Communications); Davide Colombi and Christer Törnevik (Ericsson); Haim Mazar (Ministry of Communications, Israel); ITU‐R Study Group Spectrum Management; Jafar Keshvari (Microsoft); Ken Joyner and Michael Milligan (Mobile Manufacturers Forum); Mitsuo Hattori (NTT and ITU‐T Study Group 5 Working Party 2/5 Chairman); Joe Wiart (Orange Group); Fryderyk Lewicki (Orange Polska); Tariq Alamri (Communications and Information Technology Commission, Saudi Arabia); Flavio Cucchietti (Telecom Italia); Brendon Woods Consulting (Australia), Dr Phil Knipe (TRS), Angelica Ospina (University of Manchester) and Ziqin Sang (Wuhan Research Institute of Posts and Telecommunications). The authors also acknowledge the guidance and support from all the members of the FG‐SSC Management Team, and especially Paolo Gemma (Huawei and FG‐SSC Working Group 2 Coordinator) and Cristina Bueti (ITU). Additional information and materials relating to this Technical Report can be found at: www.itu.int/itu‐t/climatechange. If you would like to provide any additional information, please contact Cristina Bueti at tsbsg5@itu.int.