Self-adaptive bandwidth method based on ad hoc network

The invention provides an adaptive bandwidth method based on an ad-hoc network, which comprises the following steps of: 1, enabling message interaction between physical layers of the ad-hoc network nodes to perform ad-hoc network by using initialization parameters by MAC (Media Access Control) layers of the ad-hoc network nodes, and counting signal transmission parameters between the ad-hoc network nodes after ad-hoc network; step 2, the MAC layer of the ad hoc network node configures transmitting end parameters and receiving end parameters of the corresponding physical layer, and issues the transmitting end parameters and the receiving end parameters to the physical layer; step 3, the physical layer of the ad hoc network node generates a signal emission parameter according to the emission end parameter and the receiving end parameter issued by the MAC layer; and step 4, the physical layer of the ad hoc network node counts the signal quality when the signal is transmitted between the nodes, and reports the si