Patent ID: 9674780
Date: 2017-06-06
CPC Classifications: H04W,Y02B,Y02D

Claim:
1. A data transmitting/receiving method that is performed between a master device and at least one slave device, the data transmitting/receiving method comprising: a synchronization establishing step for establishing synchronization between the master device and the slave device based on predetermined synchronization information that is transmitted from the master device or the slave device; a Contention Access Period (CAP) setting step for setting the CAP between the master device and the slave device at a predetermined timing based on the established synchronization; a starting step for starting data transmission/reception between the master device and the slave device within the CAP; and an extending step for ending the CAP and extending the data transmission/reception even after the CAP has ended in a case where the data transmission/reception does not end within the CAP; wherein a data frame transmitted/received between the master device and the slave device is configured to include a synchronization section that defines a signal used for the synchronization, a payload section that includes a combined information header defining a number and a payload length of at least one payload that is included in the payload section, and a header section that defines a payload length of the whole payload section; and wherein when a data frame is received from the slave device, the master device extracts the payload from the data frame, generates a new payload section by combining the extracted payload with another payload extracted from another data frame received from another slave device or a new payload generated by the master device and generates a new synchronization section and a new header section, generates a new data frame by combining the new synchronization section and the new header section that are generated with the new payload section, and transmits the generated new data frame to a higher-level master device.