The Telecom Regulatory Authority of India recommended in April 2012 that spectrum held by incumbent operators in the 900 MHz band be refarmed and substitute spectrum be provided in the 1800 MHz band so that the vacated 900 MHz band can be liberalized and auctioned for provision of IMT services...

This work describes the potential gain of spectrum sharing between different mobile technologies. A new bandwidth allocation technique is introduced, allows coexistence and overlap between old and new (relative) mobile generations, operating over the same frequency band. The new proposed...