Data-Sharing Method for Multi-Smart Devices at Close Range

Table 1

Table schema of the database for data transmission between smart devices.

Schema	Data value	Description
no	int(11) unsigned auto_increment	Index number
regDate	int(11) unsigned	Data transmission time
signalCh	tinyint(3)	Using the channel number of low-latency key
sGPSlo	int(10) unsigned	GPS location of the data-sending device (longitude)
sGPSla	int(10) unsigned	GPS location of the data-sending device (latitude)
receiveNo	tinyint(2)	Number of devices that will receive the data
count	tinyint(2)	Number of devices that start the receiving of data
filename	varchar(40)	Real file name to be transmitted