The Role of Wireless Sensors in the Quality Monitoring of Students’ Physical Fitness Tests under the Background of National Fitness

Table 2

Detailed application and description of the interface.

Application layer	Interface	Instruction
Ping		Similar to the application in the TCP/IP network, return the received data
Link		Establish the first connection between two node devices
Join		Used to obtain node access information
Security		Used for information encryption and key exchange
Freq		Complete the frequency calibration and frequency offset management of the communication module
Mgmt		Used in the network application layer, such as antenna interruption