System Design and Simulation for Square Dance Movement Monitoring Based on Machine Learning

Table 1

Comparison of internet of things communication protocols.

---	CoAP	XMPP	REST/HTTP	MQTT
Abstract	Request/reply	None	Request/reply	Pub/sub
QOS	Confirm or nonconfirmation message	None	Guarantee by TCP	3
Performance	100 req/S	No test data	100 req/s	1,000 msg/sub
Transport layer	UDP	TCP	TCP	TCP
Subscribe control	Support multicast address	None	None	Holiday matching topic subscription
Coding	Binary	XML text	Ordinary text	Binary
Safety	None	TSL data encryption	SSL and TLS	Username password, SSL data encryption