• 한국컴퓨터정보학회논문지
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• 제27권10호
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• pp.105-113
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• 2022

본 논문에서는 5G 시스템과 IEEE 시간 민감형 네트워킹(TSN)에 대해서 소개 분석하고 초저지연 네트워크를 지원하기 위하여 5G-TSN에서 시간 민감형 통신을 위한 새로운 이동성 관리 방안을 제안한다. 시간 민감형 네트워킹(TSN)은 이더넷 기반의 저지연, 높은 신뢰성, 결정형 통신을 제공할 수 있는 핵심 요소 기술로써 산업 자동화와 산업용 사물인터넷(IIoT) 분야의 유망한 미래 기술이다. TSN 지원 단말이 TSN 비서비스 영역에서 TSN 서비스 영역으로 이동했을 때, 단말은 관련 이동성 관리가 적절히 수행되지 못하기 때문에 신속하게 TSN 서비스를 받을 수 없다. TSN 서비스 영역의 이동성 상황의 경우, 제안하는 방안은 기존 5G 이동통신망에서의 방안과 비교하여 TSN 서비스 및 초저지연 통신을 즉시 제공받기 위해서 TSN 서비스 사용 가능성을 네트워크에 알리고, 초기 등록을 동작시킨다.

• 전자통신동향분석
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• 제34권6호
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• pp.108-122
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• 2019

Ultra-low latency networking is a technology that reduces the end-to-end latency related to transport time-sensitive or mission-critical traffic in a network. As the proliferation of the fourth industrial revolution and 5G mobile communications continues, ultra-low latency networking is emerging as an essential technology for supporting various network applications (such as industrial control, tele-surgery, and unmanned vehicles). In this report, we introduce the ultra-low-latency networking technologies that are in progress, categorized by application area, and examine their up-to-date standard status.

• 전자통신동향분석
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• 제35권5호
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• pp.43-56
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• 2020

The 5G system standardization body has been developing standard functions to provide ultra-high speed, ultra-high reliability, ultra-low latency, and ultra-connected services. In 3GPP Rel-16, which was recently completed, this system has begun to develop ultra-high reliability and ultra-low latency communication functions to support the vertical industry. It is expected that the trend in the adoption of mobile communication by the vertical industry will continue with the introduction of 5G. In this paper, we present the industrial Internet-of-Things (IIoT) service scenarios and requirements for the adoption of 5G systems by the vertical industry and the related standardization trend at present. In particular, we introduce the 5G time-sensitive networking standard technology, a core technology for realizing 5G-based smart factories, for IIoT services.

• ETRI Journal
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• 제42권5호
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• pp.721-733
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• 2020

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. Fifth-generation (5G) New Radio guarantees 0.5 ms one-way latency, so the feasibility of ULL services is higher than in previous mobile communications. However, this feasibility ensures performance at the radio access network level and requires an innovative 5G network architecture for end-to-end ULL across the entire 5G system. Hence, we survey in detailed two the 3rd Generation Partnership Party (3GPP) standardization activities to ensure low latency at network level. 3GPP standardizes mobile edge computing (MEC), a low-latency solution at the edge network, in Release 15/16 and is standardizing time-sensitive communication in Release 16/17 for interworking 5G systems and IEEE 802.1 time-sensitive networking (TSN), a next-generation industry technology for ensuring low/deterministic latency. We developed a 5G system based on 3GPP Release 15 to support MEC with a potential sub-10 ms end-to-end latency in the edge network. In the near future, to provide ULL services in the external network of a 5G system, we suggest a 5G-IEEE TSN interworking system based on 3GPP Release 16/17 that meets an end-to-end latency of 2 ms.

• 전자통신동향분석
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• 제38권3호
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• pp.20-28
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• 2023

Wireless communication technology has mainly been used to fulfill the demands of industrial sites at which performance is not a critical concern. However, ongoing discussions and efforts are now focused on securing core wireless communication technologies to enable the transformation or expansion of wired industrial IoT (Internet of Things) network technology into a flexible and dynamic smart manufacturing system. This paper provides an overview of current wireless industrial IoT network technology and the recent wireless time-sensitive networking technology. It outlines the challenging level of reliability required for wireless communication technology to coexist with or replace its wired counterpart in future smart manufacturing systems. Additionally, we introduce ultra-reliable time deterministic network as the core technology of wireless industrial communications and focus on its reliability and delay characteristics.