Wireless Communication System, Central Station, Access Device, and Communication Method

An access device comprising:

• a modem unit, configured to modulate uplink radio frequency (RF) signals provided by the wireless user to uplink wired signals available for being sent to a central station (CS) so that the CS demodulates the uplink wired signals to uplink RF signals, converts the uplink RF signals to obtain the data sent by the wireless user, and submits the data sent by the wireless user to a core network.

A communication method comprising:

• obtaining, by a central station (CS), data provided by a core network, converting the data provided by the core network into downlink RF signals, and modulating the downlink RF signals to downlink wired signals;
• and
• sending, by the CS, the downlink wired signals to an access device corresponding to a destination wireless user of the data through wired transmission media so that the access device demodulates the downlink wired signals sent by the CS to downlink RF signals, and sends the downlink RF signals obtained by the access device to the destination wireless user.

A communication method comprising:

• obtaining, by an access device, uplink radio frequency (RF) signals provided by a wireless user, and modulating the uplink RF signals to uplink wired signals;
• and
• sending, by the access device, the uplink wired signals to a central station (CS) through wired transmission media.