Abstract
The fourth industrial revolution is accelerating industrial automation. In industrial networks, manufacturing processes require hard real-time communication where the latency is less than 1ms. Time-sensitive networking (TSN) technology over Ethernet already supports deterministic delivery for real-time communication. However, TSN technologies over wireless networks are currently in their initial development stage. Therefore, this study presents an overview of TSN research trends in wireless communications. This paper focuses on 5G networks and IEEE 802.11. We summarize standardization trends for TSN in 5G networks and introduce the TSN technologies for 802.11-based WLAN. Then, we introduce the integration scenario of 5GS with WLAN. This study provides insights into wireless communication technologies for wireless TSN.
Highlights
Industrial Automation in WirelessIndustrial automation is a representative system attracting attention in the fourth industrial revolution
For 5G System (5GS) to operate as a time-sensitive networking (TSN) bridge, bridge information should be configured first in 5GS, and the 5GS bridge information should be reported to the centralized network configuration (CNC) of the TSN network. 5GS receives the bridge configuration information from the CNC and maps it to 5GS Quality of Service (QoS) information (e.g., 5G QoS Identification (5QI) and time-sensitive communication assistance information
The TSN application function (AF) communicates with the CNC in 5GS, transmitting port and bridge information to DS-TT/network-side TSN translator (NW-TT)
Summary
Industrial automation is a representative system attracting attention in the fourth industrial revolution. The Ethernet-based TSN technology can support services from soft realtime networking to hard real-time networking, and it requires wiring, network equipment, etc. The soft real-time manufacturing process is supported by LTE networks and 802.11ax [2]. Because the hard real-time manufacturing process requires sophisticated deterministic transmission, generation of wireless communication technologies such as 5G and 802.11be are required. In wireless TSN over WLAN, time synchronization is required. WLAN, and we derive necessary technologies for providing TSN service based on the proposed architecture.
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