Systems, methods, and devices for grouping nodes to reduce collisions are described herein. In one aspect, a method for reducing collisions in a wireless communication network is provided. The method includes receiving a packet from a first wireless device, the packet including an indication of a packet loss observed by the first wireless device. The method then determines that a collision occurred based on the indication of a packet loss. The method then assigns at least one wireless device to at least one group, based at least in part on the detected collision.