[Retracted] Optimization of Intelligent Management and Monitoring System of Sports Training Hall Based on Internet of Things

Table 1

NB-IoT vs. LoRa module performance comparison.

Long-range IoT technology	NB-IoT	LoRa
Transmission distance	<22 km	<14 km (city 1-2 km)
Networking method	Based on existing cellular network	LoRa-based gateway (self-organizing network)
Frequency band	Carrier band	150 MHz to 1 GHz
Speed	<100 kbps	0.3-50 kbps
Number of connections	200 k/cell	200 k-300 k/hub
Continuity	Approx. 10 years/AA battery	Approx. 10 years/AA battery
Network deployment	Node	Gateway + node