3. Things refers to IoT devices which have unique
identities and can perform remote sensing ,
actuating and monitoring capabilities
IoT devices can be various type : sensing
devices , smart watches , smart electronic
appliances , wearable sensors , automobiles
and industrial machines
5. IoT protocols help to establish communication
between IoT device and cloud based server
over the internet
It help to sent commands to IoT device and
received data from an IoT device over the
internet
6. Application Layer
HTTP CoAP Web Sockets
MQTT XMPP DDS AMQP
Transport Layer
TCP UDP
Network Layer
Link Layer
IPv4 IPv6 6LoWPAN
802.3-Ethernet 802.16-WiMax
802.11-WiFi 802.15.4-LR-WPAN
2G/3G/
LTE -
Cellular
7. HTTP(Hypertext Transfer Protocol)
Transmitting hypermedia documents such as HTML
It was designed for communication between web
browsers and web servers
HTTP is a stateless protocol , meaning that the server
does not keep any data between two requests
8. CoAP(Constrained Application Protocol)
It is a specialized internet application protocol
for constrained devices
It enables devices to communicate over the
internet
The protocol is especially targeted for
constrained hardware such as 8-bits
microcontrollers,low power sensors
9. WebSocket
The websocket protocol enables two-way
communication between a client running
untrusted code in a controlled environment to
a remote host that has opted in to
communications from that code
10. MQTT
It is machine-machine(M2M)/”Internet of
Things” connectivity protocol
It was designed as an extremely lightweight
publish/subscribe messaging transport and
useful for connections with remote locations
11. XMPP(Extensible Messaging and Presence
Protocol)
It is a communication protocol for message-
oriented middleware based on XML
It enables the near real time exchange of
structured yet extensible data between any two
or more network entities
12. DDS(Data Distribution Service)
It is a middleware protocol
It integrates the components of a system
together providing low-latency data
connectivity , extreme reliability and a scalable
architecture
13. AMQP
The AMQP protocol enables patron programs
to talk to the dealer and engage with the
AMQP model
14. TCP(Transmission Control Protocol)
It is a standard that defines how to establish
and maintain a network conversation through
which application programs can exchange data
TCP works with the Internet
Protocol(IP),which defines how computers
send packets of data to each other
15. UDP(User Datagram Protocol)
It is a part of Internet Protocol Suite , referred
as UDP/IP suite
It is unreliable and connectionless protocol
So , there is no need to establish connection
prior to data transfer
17. IPv6
It defines 128 bits for the IP address
It was developed to deal with the long-
anticipated problem of IPv4 address
exhaustion
18. 6LoWPAN(Low-Power Wireless Personal Area
Networks)
This protocol allows for the smallest devices
with limited processing ability to transmit
information wirelessly using an internet
protocol
19. 802.3-Ethernet
It is a set of technologies and protocols that are
used primarily in LANs
Ethernet is classified into two categories :
classic Ethernet and switched Ethernet
20. 802.11-WiFi
It specifies the set of MAC(Media Access
Control) and physical layer protocols for
implementing WLAN(wireless local area
network) WiFi computer communication in
various frequencies
21. 802.16 - Wi-Max
It is a standard for Wireless Metropolitan Area
Network(WMAN)
It is specializing in point-to-multipoint
broadband wireless access
22. 802.15.4 – LR – WPAN
A collection of standards for Low-Rate
Wireless Personal Area Network
The standards provide low-cost and low-speed
communication for power constrained devices
23. 2G/3G/4G-Mobile Communication
These are different types of telecommunication
generations
IoT devices are based on these standards can
communicate over the cellular networks
