In India spectrum has been assigned to operators in 6 bands for exclusive use (licensed) as listed under.
- 700 MHz band: 703 to 748 MHz paired with 753 to 803 MHz.
- 800 MHz band: 824 to 844 MHz paired with 869 to 889 MHz.
- 900 MHz band: 890 to 915 MHz paired with 935 to 960 MHz.
- 1800 MHz band: 1710 to 1785 MHz paired with 1805 to 1880 MHz.
- 2100 MHz band: 1920 to 1980 MHz paired with 2110 to 2170 MHz.
- 2300 MHz band: 2300 to 2400 MHz (unpaired).
- 2500 MHz band: 2496 to 2690 MHz (unpaired).
- 3500 MHz Band: 3300 to 3600 MHz (unpaired)
- 5000 MHz Band: 5150 to 6000 MHz (unpaired)
- 6000 MHz Band: 5875 to 7125 MHz (unpaired)
- 26 & 28 GHz Band: 25.25 to 29.5 GHz (unpaired)
To improve the quality of these bands its is important that they are harmonization as a continuous process. In this regard, I will like to point you to a few articles that I have written in past which provides some insights and execution strategies.