He was replying to a question on Indian telecom
industry's readiness and timeline for 5G services roll out.
"I would say real 5G allocation of spectrum is year and half away. We can start with some (spectrum) bands which are there today but eventually the eco-system will develop on the band which gets decided in Sharm el Sheikh in 2019," Mittal said.
Global body International Telecommunications Union, part of United Nations, freezes spectrum for technologies.
The World Radiocommunication Conference of ITU is scheduled to be held in 2019 to freeze spectrum for 5G technology.
Mittal said industry readiness for buying spectrum for 5G services will depend on the price that government fixes for it.
When asked about the timeline that Indian telecom
operators want for auctions, Mittal said: "I will not give any date. They (government) can decide on their own. We will take spectrum when we need.