IoT Communication Protocols
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The document provides an overview of various IoT communication protocols categorized into different layers, such as link, network, transport, and application layers. It discusses multiple protocols including Ethernet, WiFi, MQTT, and HTTP, along with their use cases and functionalities. Additionally, the document highlights various communication models and APIs used in IoT, emphasizing the importance of enabling technologies like cloud computing and big data analytics.
IoT Communication Protocols
- 1. IOT COMMUNICATION PROTOCOLS T S PRADEEP KUMAR HTTP://WWW.NSNAM.COM
- 2. TSP LINK LAYER PROTOCOLS ‣ 802.3 - Ethernet ‣ 802.11 - wifi ‣ 802.16 - WiMax ‣ 802.15.4 - Low Rate WPAN ‣ 2G/3G/4G - Mobile Communication
- 3. TSP NETWORK LAYER PROTOCOLS ‣ IPv4 ‣ Exhausted in 2011 ‣ 32bit address ‣ IPv6 ‣ 128 bit addresses ‣ 6LoWPAN ‣ Limited processing capability ‣ Shows compression mechanism with IPv6 over 802.15.4
- 4. TSP TRANSPORT LAYER PROTOCOL ‣ TCP ‣ UDP
- 5. TSP APPLICATION LAYER PROTOCOL ‣ HTTP ‣ CoAP ‣ WebSocket ‣ MQTT ‣ XMPP ‣ DDS ‣ AMQP
- 6. TSP HTTP ▸ Hyper text transfer protocol ▸ GET, PUT, POST, DELETE, HEAD, TRACE, OPTIONS, etc commands ▸ Stateless (each request is different of others) ▸ HTTP client can be a browser or application running on the client ▸ Multiple headers (MIME)
- 7. TSP COAP ▸ Constrained Application Protocol ▸ For Machine to Machine M2M ▸ Request response model ▸ Runs on UDP instead of TCP ▸ GET , PUT, POST, DELETE, etc.
- 8. TSP WEBSOCKET ▸ Full Duplex communication over single socket connection for sending messages between client and server ▸ Its based on TCP ▸ Client can be a browser, IoT Device or a mobile application
- 9. TSP MQTT ▸ Message Queue Telemetry Transport ▸ Its based on publish subscribe model ▸ Use of MQTT broker (as a Server ) ▸ Useful for places where memory and resources constraints are limited
- 10. TSP XMPP ▸ Extensible Messaging and Presence protocol ▸ Real time communication and streaming xml data between network elements ▸ Suitable for Voice/Video chats, messaging, data syndication, gaming, multi party chat ▸ Its based on client server architecture as well as server - server architecture
- 11. TSP DDS ▸ Data Distribution service ▸ Its a middleware for D2D or M2M ▸ Publish subscribe model ▸ Provides QoS and configurable reliability
- 12. TSP AMQP ▸ Advanced message queuing protocol ▸ Its for business messaging ▸ Supports point to point and publish subscribe, routing/queuing ▸ Uses AMQP brokers ▸ Messages are pushed by the brokers or pulled by the consumers.
- 13. FUNCTIONAL BLOCKS OF IOT Pradeepkumar TEXT
- 14. TEXT FUNCTIONAL BLOCKS OF IOT MANAGEMENT SECURITY SERVICES COMMUNICATION APPLICATION DEVICE
- 16. COMMUNICATION MODELS CLIENT SERVER MODEL CLIENT SERVER RESOURCES
- 17. COMMUNICATION MODELS PUBLISH SUBSCRIBE MODEL PUBLISHER SEND MESSAGES TO TOPICS BROKER TOPIC 1 TOPIC 2 CONSUMER 1 CONSUMER 2 CONSUMER 3 Message published to topic 1 Message published to topic 2
- 18. COMMUNICATION MODELS PUSH PULL MODEL PUBLISHER SEND MESSAGES TO QUEUE CONSUMER 1 CONSUMER 2 Message pushed to queues Message pulled from queues
- 19. COMMUNICATION MODELS EXCLUSIVE PAIR COMMUNICATION MODEL CLIENT SERVER Request to Setup connection Response accepting the request Message from Client to Server Message from Server to Client Connection close request Connection Close Response
- 21. API REST BASED COMMUNICATION APIS HTTP CLIENT REST AWARE HTTP CLIENT HTTP PACKET GET, PUT, POST, DELETE REST PAYLOAD JSON,XML HTTP SERVER AUTHORISATIO N, REST-FUL WEB SERVICE RESOURCES URI (REPRESENTATIONS, RESOURCES)
- 22. TEXT REST COMMUNICATION APIS ‣ Design web services and web APIs focuses on resources and how they are addressed and transferred. ‣ Client Server Concerns ‣ Client not bother about the storage at the server ‣ Server not bother about the user interface at the client ‣ Stateless ‣ State lies at the client ‣ Cache-able ‣ Layered system ‣ Uniform interface ‣ Code on demand
- 23. http method Resource type action Example GET Collection URI List all the rescuers in a collection http://example.com/api/tasks (list all tasks) GET Collection URI Get info about a resource http://example.com/api/tasks (get info on task 1) POST Collection URI Create a new resource http://example.com/api/tasks (create a new task from the data provided in the req) POST Collection URI Generally not used PUT Collection URI Replace the entire collection with another collection http://example.com/api/tasks (replace entire collection with data provided in the request) PUT Collection URI Update a resource http://example.com/api/tasks (delete all tasks) DELETE Collection URI Delete the entire collection http://example.com/api/tasks (lista ll tasks) DELETE Collection URI Delete a resource http://example.com/api/tasks (del task 1)
- 24. TEXT WEBSOCKET BASED COMMUNICATION CLIENT SERVER Request to set up websocket Response to acceptance Data Frame Data Frame Data Frame Data Frame Request to close the connection Connection close response
- 26. TEXT IOT ENABLING TECHNOLOGIES ▸ Wireless sensor networks ▸ End nodes, routers and coordinators ▸ Cloud computing ▸ Iaas, Paas, SaaS ▸ Big Data analytics (Volume, velocity and variety) ▸ Communication protocols ▸ Embedded Systems
- 27. THANK YOU