Editorial of special issue on time-sensitive networking
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EDITORIAL
Editorial of special issue on time‑sensitive networking Wei Peng1 · Yi Wang2 · Tao Huang3 · Hai Wan4 · David Dai5 · Jianping Wang6 Published online: 5 August 2020 © China Computer Federation (CCF) 2020
1 Introduction New emerging applications of Internet of things (IoTs) and cyber-physical systems (CPS) have urged stringent real-time communication requirements in the future Internet. As the physical world is gradually connected, sensed, and controlled through computer networks, non-real-time communications may cause catastrophic consequences, e.g., traffic accidents or electric blackouts. Although massive research work has been done on quality-of-service (QoS) guarantee in computer networks, bandwidth over-provisioning is still the practical way in real deployments. Time-sensitive networking (TSN) is a promising technology to support these applications and an enabling technology for future applications of virtual reality or enhanced reality. Though IEEE has published some standards on time-sensitive networking to provide real-time features based on the extension of * Wei Peng [email protected] Yi Wang [email protected] Tao Huang [email protected] Hai Wan [email protected] David Dai [email protected] Jianping Wang [email protected] 1
National University of Defense Technology, Changsha, China
2
Southern University of Science and Technology, Shenzhen, China
3
Beijing University of Posts and Telecommunications, Beijing, China
4
Tsinghua University, Beijing, China
5
Futurewei Technologies, Santa Clara, USA
6
City University of Hong Kong, Hong Kong, China
standard Ethernet techniques, there still exist some challenging issues, such as scalable time synchronization, fast response to network failures, flexible scheduling with the time and bandwidth constraints, and scaling time-sensitive networks beyond local area boundaries. The Deterministic Networking (DetNet) working group of IETF devotes efforts to a broader task to develop the protocols which can provide data paths with guaranteed delay and jitters, and bounded packet loss rates. This special issue is to provide researchers and engineers with a platform for discussing and propelling the research on time-sensitive networking and deterministic networking techniques.
2 Papers in this special issue This special issue includes four papers that represent the following three important research topics in time-sensitive networking. (1) Scheduling in TSN switches: Scheduling plays a key role in providing a real-time guarantee for TSN equipment. Due to the dynamic nature of network traffic, it is challenging to optimize the utilization of network resources while satisfying the strict time requirements of applications. For example, a guard band is often used to ensure that packets can be emitted at a prescribed time, which may lead to a waste of bandwidth to some extent. Besides, how to implement a TSN scheduling algorithm in hardware efficiently is also an important problem, especially for small embedded connected things. We have tw
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