Cognitive pilot channel (cpc) information transmission method and radio access method and system based on cpc information

Disclosed in the present invention are a Cognitive Pilot Channel (CPC) information transmission method and a radio access method and system. Wherein the CPC information transmission method comprises the following steps: dividing a CPC into a primary CPC for transmitting primary CPC information and a secondary CPC for transmitting secondary CPC information; the primary CPC information is loaded into fixed physical resources periodically and is sent to a user terminal; after receives a preset triggering event, the secondary CPC information is loaded into variable physical resources, and is sent to the user terminal. In the present invention, a base station loads the primary CPC information to the fixed physical resources of Radio Access Technology (RAT) according to the coverage status of the RAT, thus reducing information quantity required to be transmitted by the fixed physical resources, decreasing the occupancy of the fixed physical resources, expediting the radio access speed of user terminal; and when receives a preset trigger event, the base station loads the secondary CPC information to the variable physical resources and sends the information to the user terminal, the optimization of user network and radio resources are realizes.