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학술지 Ultra-low-latency services in 5G systems: A perspective from 3GPP standards
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전선미, 강유화, 김재호, 김창기
ETRI Journal, v.42 no.5, pp.721-733
한국전자통신연구원 (ETRI)
20HH8600, 고신뢰·저지연 5G+ 코어 네트워크 및 5G-TSN 스위치 기술 개발, 김창기
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 10혻ms. Fifth-generation (5G) New Radio guarantees 0.5혻ms 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-10혻ms 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 2혻ms.
KSP 제안 키워드
3GPP standards, 5G Network, 5G system, Deterministic Latency, Edge network, End to End(E2E), External Network, Fifth Generation(5G), IEEE 802.1, Industry technology, Low latency
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