Recently, there is an increasing demand for ultra‐low‐latency (ULL) services such as factory automation, autonomous driving, and telesurgery that must meet an end‐to‐end latency of less than 10 ms. F...

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.

Various technologies have been developed for the efficient use of the multiple radio access technologies resource at the radio access network level or other network levels to improve user service quality in mobile communication networks. In long-term evolution, mobile carriers are commercializing radio access network-level traffic aggregation technologies such as licensed-assisted access-long-term evolution, long-term evolution-unlicensed, and long-term evolution-wireless local area network aggregation, which use the multi-accesses of the 3rd Generation Partnership Project and WiFi, and the multipath transmission control protocol–based traffic aggregation technologies at the L3 network level. The standardization of 3rd Generation Partnership Project Release 16, which is scheduled to be completed by 2020, is under progress to support the traffic aggregation technology at the L3 network level through a multi-access 5G network. Multipath transmission control protocol is also considered as a traffic aggregation technology. However, it is difficult to apply the multipath transmission control protocol employment model used in long-term evolution to the 5G network structure as it is due to the change to a common core architecture that accommodates multiple radio access technologies through one common interface. Therefore, this article proposes an optimal 5G system architecture and a multipath transmission control protocol adaptation method to support the access traffic steering function based on multipath transmission control protocol in a 3rd Generation Partnership Project 5G mobile communication network. We have verified the development of the multipath transmission control protocol–based multi-access traffic steering technology by implementing the proposed solution in a commercial server on a testbed based on the 5G system standard of 3rd Generation Partnership Project Release 15. Furthermore, this article defines problems that occur when implementing the multipath transmission control protocol–based multi-access traffic steering system and proposes relevant solutions. Based on the implementation results, it is demonstrated that the proposed multipath transmission control protocol–based multi-access traffic steering system can perform traffic steering in the 3rd Generation Partnership Project 5G network.

The 3rd Generation Partnership Project (3GPP), which has developed the most successful standard technologies in the mobile communication market, is currently carrying out the 5G standardization of both access network (AN) and core network (CN) in 5G system. The 5G core (5GC) was designed to be commonly connected to multiple access networks in the first phase (Release 15) of normative standardization. In the next phase (Release 16), Access Traffic Steering, Switching and Splitting (ATSSS), one of work items to converge multiple access networks in 5GC, is under standardization. In this paper, we propose an efficient session management in multiple access environment to support ATSSS function for 5G broadband multimedia service. Proposed multi-access (MA) session management for ATSSS achieves radio resource saving and signaling reduction by using existing policy rules and signaling procedures.

A seamless handover scheme with low latency and low packet loss is important to maintain TCP performance of mobile users. Several solutions have been proposed such as hierarchical mobile IPv6 (HMIPv6), fast handover protocol for mobile IPv6 (FMIPv6), seamless handoff architecture for mobile IP (S-MIP), ..., however, the overall handover latency is still too high for time-sensitive services. This paper proposes a novel improvement to existing frameworks by optimizing the address configuration stage so that the handover latency is further reduced. The proposed framework is based on fast handover for hierarchical mobile IPv6 and optimistic duplicate address detection.