The DoT in a letter to telecom operators said that "shifting of carriers shall commence with effect from May 23, 2016 and be completed by June 15, 2016."
Spectrum holding in India is highly fragmented owing to the fact that the spectrum allocated to telecom operators was assigned in different quantum at different points of time.
Fragmented allocation of spectrum results in inefficiencies and hence it in a way defeats the purpose of liberalisation of airwaves for providing high speed data services like 3G and 4G.
Industry has been requesting government to facilitate harmonisation of spectrum spots so that they can deliver quality service at less cost.
The Telecom Regulatory Authority of India has also recommended government at various occasion to facilitate harmonisation of spectrum and sell only contiguous frequencies as it can fetch good value because of its efficiency.