在本节中我们进行了模拟，以说明该方法的有效性。我们在一个as的二维区域

In this section, we performed simulations to illustrate the effectiveness of the method. We deploy 100 IoT devices in a two-dimensional area of ​​as and divide these devices into k sub-clusters. Deploy an FC in aaa and randomly select an IoT device in each sub-cluster to act as the S-FC. For convenience, we assume that all IoT devices are deployed in the first quadrant of the coordinate area, and all IoT device nodes transmit their sensing data to S-FC and FC through an ideal control channel, and C-MIDs pass between them. The ideal channel is used for communication, and the signal of the PU is transmitted through the channel with AWGN. Various parameters used in the simulation and their corresponding values ​​are shown in Table 4.

In this section, we conduct simulations to illustrate the effectiveness of the method. We deploy 100 IOT devices in a two-dimensional area of an as and divide these devices into k sub clusters. Deploy an FC in AAA and randomly select an IOT device in each sub cluster to act as an s-fc. For convenience, we assume that all IOT devices are deployed in the first quadrant of the coordinate area, all IOT device nodes transmit their sensing data to s-fc and FC through the ideal control channel, c-mids communicate through the ideal channel, and Pu signals are transmitted through the channel with AWGN. Various parameters used in the simulation and their corresponding values are shown in Table 4.

In this section, we simulate to illustrate the effectiveness of this method. We deploy 100 IoT devices in a two-dimensional area of an as and divide them into k sub-clusters. Deploy an FC in aaa, and randomly select an IoT device in each sub-cluster to act as S-FC. For convenience, we assume that all IoT devices are deployed in the first quadrant of the coordinate area, all IoT device nodes transmit their sensing data to S-FC and FC through ideal control channels, C-MIDs communicate through ideal channels, and PU signals are transmitted through channels with AWGN. See Table 4 for various parameters used in the simulation and their corresponding values.