Emerging Networking Technologies for Industrial Applications
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The document discusses emerging networking technologies for industrial applications, emphasizing the transition to wireless and IP-enabled systems for improved reliability and integration with IT infrastructure. It covers various communication protocols, such as IEEE 802.15.4, Zigbee, and 6LoWPAN, and highlights the need for deterministic networking in wireless environments to manage resources effectively. Operational challenges associated with edge platforms and potential solutions in the realm of deterministic networking are also addressed.
Emerging Networking Technologies for Industrial Applications
- 1. Emerging Networking Technologies for Industrial Applications Dr. Prasant Misra W: https://sites.google.com/site/prasantmisra Disclaimer: The opinions expressed in this presentation and on the following slides are solely those of the presenter and not necessarily those of the organization that he works for.
- 2. Standards (“wired”) FOUNDATION Fieldbus H1 (Fieldbus foundation) CAN (Robert Bosch GmbH) vehicle bus standard Modbus (Schneider Elelectric) PROFIBUS (BMBF/Siemens and others) HART (Rosemount Inc.) could communicate over legacy 4-20mA analog instrumentation Industrial Applications Popular Communication, Networking and Control Standards for Industrial Systems Features/Guiding Principles Ultra-high reliability, even under harsh environments “Zero” network failure
- 3. “ GO Wireless ” !!! : Industrial Systems Industrial Applications“GO Wireless” “Lower” installation, operation and maintenance cost “Competative” end-to-end reliability and battery life
- 4. “ GO Wireless + IP ” !!! : Industrial Systems “GO IP” “Easy” integration with IT systems and the Internet Industrial ApplicationsConventional Internet IP Protocol Suite
- 5. Conventional Internet “ Go Wireless + IP ” in Industrial Systems Industrial Applications IP Protocol Suite + “nuances” Non-IP Protocol Suite Gateway
- 7. Existing Stack using IEEE 805.15.4 as the PHY Convergence / Adaptation Zigbee Alliance Zigbee IEC WirelessHART Microchip MiWi ISA 100.11a IETF 6LoWPAN Routing Application Transport MAC IEEE 802.15.4e PHY IEEE 802.15.4-2006 (868/915/2400MHz)
- 8. Popular IETF Stack for Edge Devices : 6LowPAN RFC Portfolio 6LoWPAN Adaptation IEEE 802.15.4e IEEE 802.15.4-2006 RPL UDP DTLS CoAP, CoAPs IP IPSec 1. RFC 4944 (base 6LowPAN) Transmission of IPv6 Packets over IEEE 802.15.4 Networks 2. RFC 6282 Compression Format for IPv6 Datagrams over IEEE 802.15.4 Networks 3. RFC 6775 Neighbor Discovery Optimization for IPv6 over 6LoWPAN 4. RFC 4919 IPv6 over 6LoWPAN: Overview, Assumptions, Problem Statement & Goals 5. RFC 6606 Problem Statement and Requirements for IPv6 over 6LoWPAN Routing 6. RFC 6568 Design and Application Spaces for IPv6 over 6LoWPAN
- 9. 6LoWPAN Adaptation IEEE 802.15.4e IEEE 802.15.4-2006 RPL UDP DTLS CoAP, CoAPs IP IPSec Popular IETF Stack for Edge Devices : Other RFC Portfolio 1. RFC 7252 CoAP 2. RFC 6347 / 4347 DTLS v1.2 3. RFC 4862 IPv6 Stateless Address Autoconfiguration 4. RFC draft-raza-6lowpan-ipsec-00 Compression of IPsec AH and ESP Headers for 6LoWPAN Networks
- 10. Thread 6LoWPAN Adaptation IEEE 802.15.4e IEEE 802.15.4-2006 DV Routing UDP DTLS Application IP Thread Stack for Edge Devices 6LoWPAN Adaptation IEEE 802.15.4e IEEE 802.15.4-2006 RPL UDP DTLS CoAP, CoAPs IP IPSec “Popular” IETF 1. RFC 1050 Routing Information Protocol (RIP) 2. RFC 2080 RIP for IPv6
- 11. HTTP, HTTPs, CoAP, CoAPs, OAuth TCP, UDP TLS, DTLS IP IPsec Ethernet CoAP, CoAPs, OAuth UDP DTLS IP RPL IPsec 6LoWPAN IEEE 802.15.4 PHY + MAC CoAP, CoAPs DTLS comp. DTLS UDP comp. UDP IPv6 com. IPv6 IPsec com. IPsec Ethernet/WiFi 802.15.4 security Putting “All-together”
- 13. “New” IETF Stack for Edge Devices: +6TiSCH 6LoWPAN Adaptation IEEE 802.15.4e (TSCH) IEEE 802.15.4-2006 RPL UDP DTLS CoAP, CoAPs IP IPSec 6TiSCH 6top Schedule Manager: build and maintain a TSCH schedule https://bitbucket.org/6tisch/ draft-ietf-6tisch-architecture-09 An Architecture for IPv6 over the TSCH mode of IEEE 802.15.4 draft-ietf-6tisch-minimal-15 Minimal 6TiSCH Configuration And many more https://datatracker.ietf.org/wg/6tisch/documents/ 6TiSCH: “glue” between : link-layer standard offereing industrial performance (reliability & power consumption), and IP-enabled upper stack
- 14. IETF Deterministic Networking (DetNet) What can be made deterministics in wireless networks ? Bounded worse case latency schedule all transmissions = time sync + resource reservations (buffers, queues) Delivery ratio diversity to counter unpredictable interference Spatial --> redundancy temporal/frequency --> retry failed transimitions and hop channels Deterministic networking refers to the pre-computation and pre-allocation of pre-determined physical resources in the network (queues, buffers, transmission medium) for well characterized flows that are known a-priori, in order to avoid statistical effects that lead to poor bandwidth utilization, uncontrolled jitter, and congestion loss. A path is nailed down for a particular set of resources at particular times, and the forwarding behavior ensures that the right packets are forwarded at the right time to make use of these resources.
- 15. IETF Deterministic Networking (DetNet) : Open Challenges Edge Platform (constrains) introduce operational challenges: Limited buffering capacity avaliable --> Cannot store frames in transit from multiple flows Single radio with half-duplex properties --> Cannot transmit and receive at the same time Energy limitations --> Needs to be factored in for calulating the globally best schedules with min OPEX Imprecise system clocks --> High precision time-stamping (< 1us) is challenging Workable schedules in stable topologies is achievable; but what about topologies with high percentage of “grey” links (typical of LLN) ? Deterministic Networking Professional Audio Requirements http://tools.ietf.org/html/draft-gunther-detnet-proaudio-req-01 Deterministic networking for radio access networks http://tools.ietf.org/html/draft-korhonen-detnet-telreq-00 6TiSCH requirements for DetNet http://tools.ietf.org/html/draft-thubert-6tisch-4detnet-01 Deterministic Networking Utilities requirements http://tools.ietf.org/html/draft-wetterwald-detnet-utilities-reqs-02 Deterministic Networking Use Case in Mobile Network http://tools.ietf.org/html/draft-zha-detnet-use-case-00 Deterministic Networking Problem Statement http://tools.ietf.org/html/draft-finn-detnet-problem-statement-03 Deterministic Networks Gap Analysis http://tools.ietf.org/html/draft-dujovne-detnet-gap-analysis-00 Deterministic Networking Architecture http://tools.ietf.org/html/draft-finn-detnet-architecture-01
- 16. Thanks !!!