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Kwonjong Lee, Joonki Kim, Yosub Park, Hanho Wang, and Daesik Hong, "Latency of Cellular-based V2X: Perspectives on TTI-proportional-latency and TTI-independent-latency", IEEE Access, Jul. 2017
[IEEE Access]
조회 38850
Status : | Published |
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Date : | 2017-07 |
Title : | Latency of Cellular-based V2X: Perspectives on TTI-proportional-latency and TTI-independent-latency |
Authors : | Kwonjong Lee, Joonki Kim, Yosub Park, Hanho Wang, and Daesik Hong |
Journal : | IEEE Access |
Abstract : | Vehicle-to-Everything (V2X) is a form of wireless communication that is extremely sensitive to latency, because the latency is directly related to driving safety. The V2X systems developed so far have been based on the LTE system. However, the conventional LTE system is not able to support the latency requirements of latency-aware V2X. Fortunately, the state-ofthe-art cellular technology standard includes development of latency reduction schemes such as shortened transmission time intervals (TTI) and self-contained subframes. This paper verifies and analyzes the latency of cellular-based V2X with shortened TTI, which is one of the most efficient latency reduction schemes. To verify the feasibility of V2X service, we divide the V2X latency into two types of latency, TTI-independent latency (IL) and TTI-proportional latency (PL). Moreover, using system-level simulations considering additional overhead from shortened TTI, we evaluate the latency of cellular-based V2X systems. Based on this feasibility verification, we then propose cellular-based V2X system design principles in terms of shortened TTI with only one OFDM symbol and while sustaining RRC connection. |
URL : | http://ieeexplore.ieee.org/stamp/stamp.j...er=7990497 |
Download : | https://mirinae.yonsei.ac.kr/?module=fil...le_srl=179 |
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