Communication system, communication device, and communication method
AssigneeMitsubishi Electric Corporation
InventorsYuma Hayashi, Daisuke Osagawa, Kazuya Inazuma
Life of this patent
Estimating the term…
Abstract
A communication system includes: a first communication device that transmits a plurality of frames at a transmission time interval shorter than a time required for transmitting a minimum frame; and a second communication device that performs timing synchronization with the first communication device on the basis of the plurality of frames when a reception time interval of the plurality of frames received is equal to the transmission time interval.
Claims11
A communication system in which communication is performed at a fixed communication rate, comprising:
- a first communication device to transmit a plurality of frames, each having a same minimum frame length, transmission of each of the plurality of frames beginning at a predetermined transmission time interval from completion of transmission of a preceding frame, the predetermined transmission time interval being shorter than a time required for transmitting a minimum-length frame having the minimum frame length;
- and
- a second communication device to perform timing synchronization with the first communication device on the basis of the plurality of frames when a reception time interval between successive frames of the plurality of frames received is equal to the predetermined transmission time interval,
- wherein the second communication device does not perform timing synchronization with the first communication device on the basis of the plurality of frames when the reception time interval of the frames received is not equal to the predetermined transmission time interval.
A communication device that communicates at a fixed communication rate, comprising:
- a receiver to receive a plurality of frames, each having a same minimum frame length, from another communication device that transmits the plurality of frames, transmission of each of the plurality of frames beginning at a predetermined transmission time interval from completion of transmission of a preceding frame, the predetermined transmission time interval being shorter than a time required for transmitting a minimum-length frame having the minimum frame length;
- and
- a processor to perform timing synchronization with the other communication device on the basis of the plurality of frames when a reception time interval between successive frames of the plurality of frames is equal to the predetermined transmission time interval,
- wherein the processor does not perform timing synchronization with the other communication device on the basis of the plurality of frames when the reception time interval of the frames received is not equal to the predetermined transmission time interval.
A communication device that communicates at a fixed communication rate, comprising:
- a transmitter that transmits a plurality of frames, each having a same minimum frame length, to another communication device, transmission of each of the plurality of frames beginning at a predetermined transmission time interval from completion of transmission of a preceding frame, the predetermined transmission time interval being shorter than a time required for transmitting a minimum-length frame having the minimum frame length, wherein
- the other communication device receives the plurality of frames and performs timing synchronization with the communication device on the basis of the plurality of frames when a reception time interval between successive frames of the plurality of frames is equal to the predetermined transmission time interval, and
- the other communication device does not perform timing synchronization with the communication device on the basis of the plurality of frames when the reception time interval of the frames received is not equal to the predetermined transmission time interval.
A communication method implemented by a communication system that includes a first communication device and a second communication device communicating with the first communication device at a fixed communication rate, the method comprising:
- transmitting, by the first communication device, a plurality of frames, each having a same minimum frame length, transmission of each of the plurality of frames beginning at a predetermined transmission time interval shorter than a time required for transmitting a minimum-length frame having the minimum frame length relative to completion of transmission of a preceding frame;
- determining, by the second communication device, whether a reception time interval between successive frames of the plurality of frames received is equal to the predetermined transmission time interval;
- and
- performing, by the second communication device, timing synchronization with the first communication device on the basis of the plurality of frames when the reception time interval between successive frames of the plurality of frames received is equal to the predetermined transmission time interval, the timing synchronization not being performed by the second communication device in a case that the reception time interval between successive frames is not equal to the predetermined transmission time interval.
Dependencies are inferred from the claim text.