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A prevalent scheme for spatial reuse in wireless networks is Spatial Time Division Multiple Access (STDMA), in which time is divided into fixed-length slots that are organized cyclically. An STDMA link schedule defines the transmission rights for each time slot in such a way that communicating pairs of nodes, i.e., links, assigned to the same time slot do not collide. The interference between the links can be modeled by assuming that transmission on a link is successful if the distance between the nodes is less than some communication range and no other node is transmitting within an interference range from the receiver of the link. This is called protocol interference model.
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