1. A method for mitigating interference between access nodes in a wireless network, the method comprising:determining a first interference caused within a first uplink portion of a first special subframe of a first access node by a first downlink signal transmitted from a second access node, wherein the first uplink portion comprises a signal transmitted from a wireless device in a coverage area of the first access node;
determining, based on the first interference caused to the first uplink portion, that a second downlink signal transmitted from the first access node can cause a second interference to a second uplink portion of a second special subframe of the second access node;
obtaining a distance between the first and second access nodes; and
selecting a format of special subframes utilized by the first access node based on the distance, wherein special subframes of the selected format comprise a guard period between uplink pilot time slots and downlink pilot time slots of a duration sufficient to minimize the second interference,
wherein adjusting the guard period comprises switching from a first special subframe format to a second special subframe format with a longer guard period.