Smart Edge Broker for Location-Based Transfer between Services and Distributed Data in IoT Smart Services

Table 2

Smart Edge Broker message definition: DataPub message.

Header	Byte	Description
Fixed	Byte 1	MQTT control packet type (3)
	Byte 2	Remaining length
Variable	Byte 1	Packet identifier MSB
	Byte 2	Packer identifier LSB
	Byte 3…n	Topic
	Byte n + 1	Payload length MSB
	Byte n + 2	Payload length LSB
	Byte n + 3	Topic filter + query
Payload	Payload