The country announced its intentions last year to introduce a fourth operator by setting aside spectrum.
The Infocomm Development Authority of Singapore (IDA) will hold the auction in two stages, with the first reserved for a new entrant scheduled for Q3 2016.
"The spectrum auction is designed with the interests of consumers in mind. The spectrum made available will allow all mobile operators to roll out or enhance their high speed networks as early as 2017," said IDA managing director Jacqueline Poh.
"Having more players in the market will give consumers a greater choice in selecting an offering that best suits their needs," she added.
For entrants in the first auction, the IDA will make available 60MHz of spectrum from the 900MHz and 2.3GHz bands at a reserve price of S$35 million, with the rights commencing in April 2017.
Following that, the regulator will hold a general auction open to the three present operators – Singtel, M1 and StarHub – as well as any operator from the first auction. The second auction will include 175MHz of spectrum across the 700 MHz, 900 MHz, 2.3 GHz and 2.5 GHz bands.
Singapore-based MyRepublic has reportedly expressed interest in the taking part in the auction. The fibre broadband startup is working with investors to raise S$250 million ($178 million) in its bid to be the fourth telco in the country.
