Abstract: Explore the media access scheduling methods based on TDMA and cognitive radio for regular topology structures.Design timeslot and channel selection algorithm for such topologies as Square,Hexagon and Triangle,analyze on the cost and maximal throughput of these methods,and point out that Square yields the optimal transmission performance.The OMNet++based simulation experiment for Square topology verified the superiority of 4-timeslot scheduling method,and showed that smaller timeslot helps to increase throughput.