Applying Time-aware Shaper Considering User Identifier to Service Provider Network

• Main Authors: Kawakami, Yuhei, Kawata, Hideo, Kubo, Takahiro, Yasuhara, Natsuki, Yoshihara, Shinichi, Yoshida, Tomoaki
• Format: Conference Proceeding
• Language: English
• Subjects: Delays; Jitter; Logic gates; Mass customization; Numerical simulation; Quality of Service; real-time communication; Resistance; Schedules; Service Provider Network; Time-aware Shaper (TAS); Time-sensitive Networking (TSN); Wide Area Network (WAN)
• ISSN: 2331-9860
• DOI: 10.1109/CCNC49033.2022.9700587

As mass customization has matured, there is a growing expectation to extend the scope of IEEE802.1Qbv (Time-aware Shaper: TAS) to not only user network but also service provider networks (SPNW). To control communication latency in SPNW, a deviation in the transmission schedule of one user should not affect other users' time-sensitive traffic. Hellmanns et al. [1] proposed a convergent TAS scheduling model. Kim et al. [2] proposed adding the concept of protection band to the TAS algorithm to send urgent event traffic immediately. The above related studies have not considered the resistance to the violation traffic when multiple users are accommodated in TAS NW, which we will discuss in this paper. First, we use the user identifiers to address the problem of other users' traffic interrupting the queue at different timing from the schedule by setting up exclusive queues and gates for each user. Second, we propose a combination of time slots that enable transmission of time-sensitive traffic and idle time that prohibits transmission. We take measures to prevent the transmission of delay-guaranteed traffic from colliding during transmission of other frames. A numerical simulation shows end-to-end jitter of SPNW is minimized by our proposed method.