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Pearson BTEC International Level 3 Qualifications in Information Technology –
Specification – Issue 3 – September 2022 © Pearson Education Limited 2022
255
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identifying technical and design constraints, e.g. connectivity, memory storage,
and power requirements and working around them
o
obtaining and using feedback from others to improve the quality,
effectiveness and appropriateness of the design
o
decisions and
processing steps, e.g. flow chart.
B2 Machine-to-machine (M2M) system and device architecture
The architecture of M2M communications in IoT systems and devices, including:
•
sensors – when they might be used and how their data is translated in the
system (from analogue to digital,
from raw format to a readable, compatible
format), including speed,
suspension, pressure, and temperature and
emission sensors
•
wired and wireless communications – how they work and how they are used
in IoT, including General Packet Radio Service (GPRS), Wi-Fi, Ethernet and
Bluetooth
®
low energy (BLE), RFID and Quick Response (QR) codes
•
actuators – how
they are used in IoT, e.g. controllers, motors and servos
•
device domain that provides communications between components – how they
are used in IoTs, e.g. personal area networks
•
network domain provides the communications between M2M gateways and
M2M applications, e.g. wide area network (WAN) and wireless local area
network (WLAN)
•
application domain provides the middleware layer where data is used by
business logic layers for processing to target the end user and customer,
e.g. billing functions and customer care.
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