Embodiments of the present invention disclose a radio communication system and a radio access method. In accordance with the embodiments of the present invention, an AP with a PDP forward function unit forwards service traffic accessing an AS to a Packet Radio Service Gateway Support Node, and sends Internet service traffic to the Packet Radio Service Gateway Support Node or directly sends the Internet service data to the Internet via a configured forwarding interface according to the service property of the service traffic. Embodiments of the present invention further disclose an Access Point and a gateway. Therefore, the load of network elements of a mobile network is reduced; meanwhile, the control and the management of the high increment value services by operators can be guaranteed. The investment of the CS network can be protected by the gateway as a concentrator of Access Points and a forwarding node of CS services in the embodiments of the present invention.