DDS for Internet of Things (IoT)

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How the Internet of Things (IoT) world can benefit from Data Distribution Service (DDS) middleware for device-to-device communication as well as device to server and cloud communication/messaging.

Mil-DDS IoT Suite

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DDS for Internet of Things (IoT)

  1. 1. DDS for Internet of Things (IoT) Mil-DDS IoT Suite Abdullah OZTURK,Technical Lead
  2. 2. The Internet of Things (IoT) is the network of physical objects or "things" embedded with electronics, software, sensors and connectivity to enable it to achieve greater value and service by exchanging data with the manufacturer, operator and/or other connected devices. Source: Wikipedia
  3. 3. The current Internet is about people. The IoT is about smart machines. The Internet of Things (IoT) promises to connect up to 50 billion devices in a short five years.
  4. 4. Main Requirements of IoT • Identification • Sensing • Communication
  5. 5. The next wave of the Internet will connect machines and devices together into functioning, intelligent systems. These interconnected devices will work together with speed, scale and capabilities that are hard to predict.
  6. 6. People to Things Pyramid
  7. 7. Problems of Today’s IoT Devices on today's Internet of Things communicate primarily with centralized servers. The lack of protocol is a direct obstacle to the IoT. If data will be trapped within centralized silos, it would remain more difficult to share; and more security and privacy concerns would be raised. It would have to travel farther and might be subject to congestion at hubs, slowing down services.
  8. 8. Alternatively, stronger and more widely used protocols used by more devices could create an Internet of Islands.
  9. 9. IoT systems will be built from thousands of different "finer grained" applications. Enterprise and human-centric communications are too slow or too sparse to put together large networks of screaming- fast devices. These new types of intelligent machines need a new technology. Several protocol standards address IoT challenges.
  10. 10. IoT Technology Stack
  11. 11. The Data Distribution Service for Real-Time Systems (DDS) is an Object Management Group (OMG) machine-to-machine middleware "m2m" standard that aims to enable scalable, real-time, dependable, high-performance and interoperable data exchanges between publishers and subscribers. The Data Distribution Service (DDS) most directly addresses the development of intelligent distributed machines. Source: Wikipedia
  12. 12. DDS Key Features for IoT • DDS handles message addressing, data marshaling, delivery, flow control, retries, etc. • DDS can deliver data securely at high speeds to thousands of recipients with strict control of timing, reliability, failover, and heterogeneity (CPU architecture, programming language and OS independence). • DDS supports a decentralized broker-less architecture to enable seamless data sharing between publishers and subscribers. • DDS can run over many transports including TCP/IP, UDP by the DDS interoperability wire protocol.
  13. 13. DDS implementation can be scaled down to deeply embedded devices or up to high-end multicore machines. DDS can provide the real-time, many-to-many, managed connectivity required by high-performance device-to-device applications. DDS is also emerging as a key interoperable messaging protocol for connecting real-time device networks to cloud based data centers. IoT Communications
  14. 14. Scalability with DDS Demanding strong consistency and availability everywhere will not scale for many IoT systems, • because they are inherently partitioned due to unreliable connections. DDS provides eventual consistency of data efficiently. DDS handles discovery of newly added devices dynamically. Ŏ adding a new smart machine to the network doesn’t require any configuration changes. By design DDS’s loosely-coupled architecture scales better than the other protocols.
  15. 15. Data-centric DDS middleware locates, filters, controls, and exchanges information flow with a known data model. The infrastructure understands and manages the states. All interested subscribers have a correct and consistent view of the data. ∠ Moving complexity into the middleware Ŏ greatly simplifies the applications ∠ Decoupling services from data Ŏ results in higher availability and increased fault- tolerance
  16. 16. DDS targets device-to-device communications by differing significantly from the other protocols in QoS control. • resend lost messages (reliability) • preserve order in which to deliver data (presentation) • failover (ownership and strength) • keep/deliver data for late joiners (durability) • amount of data to keep in cache / deliver to late joiners (history) • how long to keep data (lifespan) • control notifications of missed data (deadline) • presence fidelity (liveliness) • control how frequently to receive data (time-based filter) • control which data to receive based on content (content filter) • constrain memory usage (resource limits)
  17. 17. Any technological device that is able to autonomously communicate to another device as well as access the Internet is an Intelligent System. Industrial Internet: an emerging trend that refers to the integration of big data, Internet of Things, machine-to- machine communications and cyber-physical systems.
  18. 18. IoT Standardization • OMG has been active in IIoT standardization for long. • Industrial Internet Consortium (IIC) has been formed with at least 10 companies -- including AT&T, Cisco Systems, GE, IBM, and Intel -- to set standards in the area. • DDS is a strong candidate for protocol standardization. • There may come a time when every automated system we touch will integrate the DDS middleware.
  19. 19. Mil-DDS Research Goals • To provide insight into the suitability of OMG DDS standards for use between different domains. • To identify gaps with the current set of DDS standards. • To identify potential new or extensions to support the use of DDS within the IoT architecture.
  20. 20. In summary, DDS is the standard that addresses most of the requirements of IoT systems. Mil-DDS product family benefits from the DDS in its core messaging platform for interoperability, reliability, high performance and fault-tolerance. Mil-DDS enriches the core product by providing solutions for mobile, embedded, web, enterprise, and cloud applications for IoT systems.
  21. 21. Thank you. Mil-DDS IoT Suite Abdullah OZTURK,Technical Lead

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