Wireless communication system and wireless communication device
In a base station, a signal synchronization unit detects a received timing of a signal from a mobile station. A correlation position protection unit corrects the received timing on the basis of time from a transmitting timing at which a signal transmitting operation to the mobile station is started to the received timing. A transmitting timing generation unit generates, on the basis of the received timing after the correction, a transmitting timing at which a subsequent signal transmitting operation to the mobile station is started. Further, an FB frame generation unit generates frame period information that indicates a correction value by the correlation position protection unit, and a transmitting processing unit transmits, to the mobile station, a signal including the frame cycle information in response to the generation of the transmitting timing.
1. A wireless communication system comprising:
a first wireless communication device; and
a second wireless communication device,
wherein the wireless communication system performs wireless communication between the first wireless communication device and the second wireless communication device in a time division duplex fashion,
wherein the first wireless communication device comprises:
a first received timing detection unit configured to detect a received timing of a signal from the second wireless communication device;
a first received timing correction unit configured to correct the received timing detected by the first received timing detection unit on the basis of time from a transmitting timing, at which an operation of transmitting a signal to the second wireless communication device is started to the received timing detected by the first received timing detection unit;
a first transmitting timing generation unit configured to generate a transmitting timing at which an operation of transmitting a subsequent signal to the second wireless communication device is started on the basis of the received timing corrected by the first received timing correction unit; and
a first transmitting unit configured to transmit a signal including frame period information representing a correction value of the first received timing correction unit to the second wireless communication device when the transmitting timing is generated by the first transmitting timing generation unit, and
wherein the second wireless communication device comprises:
a second received timing detection unit configured to detect a received timing of a signal from the first wireless communication device;
a second received timing correction unit configured to correct the received timing detected by the second received timing detection unit on the basis of the frame period information received from the first wireless communication device through previous communication;
a second transmitting timing generation unit configured to generate a transmitting timing at which an operation of transmitting a subsequent signal to the first wireless communication device is started on the basis of the received timing corrected by the second received timing correction unit; and
a second transmitting unit configured to transmit the subsequent signal to the first wireless communication device when the transmitting timing is generated by the second transmitting timing generation unit.
2. The wireless communication system of claim 1 , wherein the second wireless communication device further comprises a storage unit configured to store the frame period information included in the signal received from the first wireless communication device, and
the second received timing correction unit corrects the received timing detected by the second received timing detection unit on the basis of the frame period information stored in the storage unit.
3. A wireless communication device for performing wireless communication with a different wireless communication device in a time division duplex fashion, the wireless communication device comprising:
a received timing detection unit configured to detect a received timing of a signal from the different wireless communication device;
a received timing correction unit configured to correct the received timing detected by the received timing detection unit on the basis of time from a transmitting timing at which an operation of transmitting a signal to the different wireless communication device is started to the received timing detected by the received timing detection unit;
a transmitting timing generation unit configured to generate a transmitting timing at which an operation of transmitting a subsequent signal to the different wireless communication device is started on the basis of the received timing corrected by the received timing correction unit; and
a transmitting unit configured to transmit the subsequent signal including frame period information representing a correction value of the received timing correction unit to the different wireless communication device when the transmitting timing is generated by the transmitting timing generation unit so that the different wireless communication device corrects a received timing with the same correction value as the received timing correction unit.
4. A wireless communication device for performing wireless communication with a different wireless communication device in a time division duplex fashion, the wireless communication device comprising:
a received timing detection unit configured to detect a received timing of a signal from the different wireless communication device;
a storage unit configured to store frame period information which is included in a signal transmitted from the different wireless communication device and represents a correction value of the received timing based on time from a transmitting timing at which the different wireless communication device starts a signal transmitting operation to a signal received timing of the different wireless communication device;
a received timing correction unit configured to correct the received timing detected by the received timing detection unit on the basis of the frame period information stored in the storage unit;
a transmitting timing generation unit configured to generate a transmitting timing at which an operation of transmitting a subsequent signal to the different wireless communication device is started on the basis of the received timing corrected by the received timing correction unit; and
a transmitting unit configured to transmit the subsequent signal to the different wireless communication device when the transmitting timing is generated by the transmitting timing generation unit.