Precision first: developing the overall TSN network architecture with MAIWE switches

29 May 2024 Product News

With the continuous digitalization of industrial networks, including industrial control (OT) and information (IT) networks, are showing a trend towards integration, with the ability to support interconnection and joint network transmission of multi-service, multi-protocol, multi-vendor equipment and data. TSN (Time Sensitive Network) technology uses a physical Ethernet interface and builds data transmission at the data link level, based on universal standards. As a core universal architecture, it provides the technical basis for integrating traditional OT and IT networks, providing an accelerated development path for new businesses including big data analytics and intelligent systems and machines, making Industrial Internet technologies more open and dynamic.

Application of TSN switches in the Industrial Internet

The functional architecture of TSN follows the technical idea of a software-defined network (SDN) and complies with modern requirements for IEEE 802.1Qcc protocols (data stream reservation), and is divided into three protocol blocks:

  • Control unit (CUC, CNC): CUC (Cross-Domain User Coordination) is a component that is responsible for the relationship between different domains of the TSN network. The CUC typically deals with translating user network requirements and coordinating cross-domain communications. It plays a key role in ensuring consistency and compatibility between different parts of the network, such as different hardware, protocols and software. Within the same network domain, the TSN of the CNC network is responsible for implementing device monitoring and control, determining the network topology, and monitoring and optimizing traffic.
  • Transmission unit (gateway, switch): In addition to supporting time-sensitive network-related forwarding functions, the transmission unit also supports related online measurement protocols and sends the corresponding status to the control unit in real time.
  • Application devices (industrial equipment, base stations, etc.): require the ability to access time-sensitive networks and support online measurement and operation protocols, as well as maintenance for detecting the topology of the network as a whole, monitoring network status.

General architecture of the TSN network

MAIWE’s TSN series switches have the following characteristics:

  • Time synchronization: TSN can achieve precise time synchronization via IEEE 802.1AS, ensuring time synchronization of all devices on the network.
  • Determinism: TSN has deterministic transmission characteristics. With a series of protocols such as IEEE 802.1Qbv and IEEE 802.1Qci, it can guarantee the transmission time, transmission order and transmission quality of data packets, and avoid problems such as network congestion and packet loss.
  • Real time operation: TSN provides priority-based flow control using the IEEE 802.1Qci protocol to support real-time data transmission, allowing priority transmission of key data packets.
  • Compatibility: TSN is compatible with existing Ethernet protocols and can be extended on top of existing networks to provide seamless connectivity.
  • Flow and Priority Management: TSN provides time-based flow control using the IEEE 802.1Qbv protocol. At the same time, TSN provides priority-based flow control using the IEEE 802.1Qci protocol, allowing real-time data transmission in priority order.
  • Flexibility: TSN can be customized and extended to suit different application scenarios and needs, and is highly flexible and scalable.
  • Security: TSN supports encryption and authentication features to ensure data security and privacy. TSN implements access control systems that determine which devices and users have the right to access certain resources on the network. This allows you to limit access to only necessary resources and prevent unauthorized access to sensitive data.

Application of MAIWE’s TSN switches in the energy industry

MISCOM7208TSN-2GF-6GT, MISCOM8216TSN-4XGF-4GF-8GT and MISCOM8036TSN-4XGF-24GF-8GT switches can achieve single-hop delay less than 10us, jitter less than 300ns, they support multi-level clock synchronization, as well as all the above standards IEEE802.1Qbv, IEEE802.1Qbu, IEEE802.1Qci, IEEE802.1CB and others. In addition, thanks to the unique hardware design, the devices can operate in high and low temperature environments -40~75℃. Protection level IP40. Electromagnetic interference protection level - 4. On the software side, redundant ring protocols (recovery time <20 ms), ERPS and RSTP are supported.

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