A method, comprising: acquiring by a first network node in a network, assignment of a particular exclusive group of a plurality of exclusive groups of exclusive transmission units associated with the network, with each of the plurality of exclusive groups of exclusive transmission units including a plurality of different exclusive transmission units not included in another of the plurality of exclusive groups of exclusive transmission units, with the particular exclusive group of the plurality of exclusive groups including an exclusive transmission unit; and acquiring by the first network node, assignment of a particular overlapping group of a plurality of overlapping groups of overlapping transmission units associated with the network, with each of the plurality of overlapping groups of overlapping transmission units including a plurality of different overlapping transmission units not included in another of the plurality of overlapping groups of overlapping transmission units, with the particular overlapping group of the plurality of overlapping groups including an overlapping transmission unit, the method further comprising: sending information, from the first network node, during the exclusive transmission unit, wherein the exclusive transmission unit includes one or more wireless time slot-frequency pairings (211, 212) assigned to the first network node to send information without another assigned network transmission unit providing overlapping time slot-frequency interference from another network node communicating in the network; and sending information, from the first network node, during the overlapping transmission unit, wherein the overlapping transmission unit includes one or more wireless time slot-frequency pairings (223, 214) assigned to the first network node to send information, with the overlapping transmission unit overlapping in time slot-frequency with one or more other assigned network transmission units that will cause interference if simultaneously used. acquiring by a first network node in a network, assignment of a particular exclusive group of a plurality of exclusive groups of exclusive transmission units associated with the network, with each of the plurality of exclusive groups of exclusive transmission units including a plurality of different exclusive transmission units not included in another of the plurality of exclusive groups of exclusive transmission units, with the particular exclusive group of the plurality of exclusive groups including an exclusive transmission unit; and acquiring by the first network node, assignment of a particular overlapping group of a plurality of overlapping groups of overlapping transmission units associated with the network, with each of the plurality of overlapping groups of overlapping transmission units including a plurality of different overlapping transmission units not included in another of the plurality of overlapping groups of overlapping transmission units, with the particular overlapping group of the plurality of overlapping groups including an overlapping transmission unit, the method further comprising: sending information, from the first network node, during the exclusive transmission unit, wherein the exclusive transmission unit includes one or more wireless time slot-frequency pairings (211, 212) assigned to the first network node to send information without another assigned network transmission unit providing overlapping time slot-frequency interference from another network node communicating in the network; and sending information, from the first network node, during the overlapping transmission unit, wherein the overlapping transmission unit includes one or more wireless time slot-frequency pairings (223, 214) assigned to the first network node to send information, with the overlapping transmission unit overlapping in time slot-frequency with one or more other assigned network transmission units that will cause interference if simultaneously used. sending information, from the first network node, during the exclusive transmission unit, wherein the exclusive transmission unit includes one or more wireless time slot-frequency pairings (211, 212) assigned to the first network node to send information without another assigned network transmission unit providing overlapping time slot-frequency interference from another network node communicating in the network; and sending information, from the first network node, during the overlapping transmission unit, wherein the overlapping transmission unit includes one or more wireless time slot-frequency pairings (223, 214) assigned to the first network node to send information, with the overlapping transmission unit overlapping in time slot-frequency with one or more other assigned network transmission units that will cause interference if simultaneously used.