The Cellular Operators Association of India (COAI) has also requested to conduct the spectrum auction in 800, 900, 1,800 and 2,100 MHz bands concurrently and not sequentially.
"We request the DoT to initiate a dialogue with Defence on the partial allocation and potential vacation of 900 MHz, reshuffling of 1,800 MHz and the swapping of 1,900 MHz with 2,100 MHz uplink," COAI said in a letter to Telecom Secretary M F Farooqui.
The government is likely to auction about 165 MHz of spectrum in financial year 2014-15 that is held by telecom operators whose licences are set to expire in December 2015.
In December 2015, four licences of Bharti Airtel, seven each of Idea Cellular and Reliance Telecom and six of Vodafone will complete their 20 year term and will have to be renewed.
These companies hold most of the spectrum in the premium 900 MHz band for which they have paid up to twice more than the base price fixed by the government in the February auction.
COAI has also requested for extension of licences, saying it is in public interest, and non-grant of the same could lead to disruptions in networks.
Regarding 800 MHz band which is used for offering CDMA services, COAI has asked for creation of one block of contiguous 5 MHz spectrum that can be used for broadband technologies by existing CDMA or GSM/3G and BWA operators.
