Potential new entrant wireless operators got what they wished for in the upcoming spectrum auction: a set aside of spectrum. Industry Canada set aside 40 MHz of spectrum exclusively for new entrants, but also decided to mandate tower sharing and roaming. With the rules set,  Bell Mobility, Rogers Communications Inc. and Telus Mobility will now turn their attention to sharpening their auction strategies in the coming weeks as they prepare to duke it out for a smaller amount of spectrum than they had hoped.