A Suite of Design Quality Metrics for Internet of Things by Modelling Its Ecosystem as a Schema Graph

Table 3

Data format and packet sizes for low-end medical devices considered in the case study.

Sensor/Actuators	Data generation	Protocol	Data	Packet size
	Time interval	Supported	Format	(In bytes)
GLM	5 minutes	CoAP = 4BYTES	TEXT	8
HBRM	1 minute	REST = 8BYTES	JSON	12
BPM	1 minute	MQTT = 2BYTES	Number	7
RRM	1 minute	CoAP = 4BYTES	XML	7
POM	5 minutes	REST = 8BYTES	TEXT	12
ECG	1 minute	MQTT = 2BYTES	JSON	10
TMS	1 minute	MQTT = 2BYTES	NUMBER	6
CMS	1 minute	MQTT = 2BYTES	NUMBER, GRAPH	8
IS	1 minute	MQTT = 2BYTES	JSON	20
CSI	1 minute	CoAP = 4BYTES	XML	16
FDS	1 minute	AMQP = 8 BYTES	JSON	23
SID	5 minute	CoAP = 8BYTES	XML	20
SV	5 minute	CoAP = 8BYTES	XML	24
AID	60 minutes	AMQP = 8BYTES	JSON	16
SR	CONDITIONAL	AMQP = 8BYTES	JSON