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Latency-Optimal mmWave Radio Access for V2X Supporting Next Generation Driving Use Cases
National Chung Cheng University, Chia-Yi, Taiwan.
National Formosa University, Yulin, Taiwan.
National Changhua University of Education, Changhua, Taiwan.
Industrial Technology Research Institute, Hsinchu, Taiwan.
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2019 (English)In: IEEE Access, E-ISSN 2169-3536, Vol. 7, p. 6782-6795Article in journal (Refereed) Published
Abstract [en]

With the facilitation of the fifth generation (5G) New Radio (NR), Vehicle-to-Everything (V2X) applications have entered a brand new era to sustain the next generation driving use cases of advanced driving, vehicle platooning, extended sensors and remote driving. To deploy these driving use cases, the service requirements however include low latency, high reliability, and high data rates, which thus render utilizing millimeter wave (mmWave) carriers (spectrum above 6 GHz) as a remedy to empower the next generation driving use cases. However, suffering from severe signal attenuation, transmission range of mmWave carriers may be very limited, which is unfavorable in mobile network deployment to offer seamless services, and compel directional transmission/reception using beamforming mandatory. For this purpose, both a transmitter and a receiver should sweep their beams toward different directions over time, and a communication link can be established only if a transmitter and a receiver arrange their beam directions toward each other at the same time (known as beam alignment). Unfortunately, latency of performing beam sweeping to achieve beam alignment turns out the be a dominating challenge to exploit mmWave, especially for the next generation driving use cases. In this paper, we consequently derive essential principles and designs for beam sweeping at the transmitter side and receivers side, which not only guarantee the occurrence of beam alignment but also optimize the latency to achieve beam alignment. Based on the availabilities of a common geographic reference and the knowledge of beam sweeping scheme at the transmitter side, we derive corresponding performance bounds in terms of latency to achieve beam alignment, and device corresponding latency-optimal beam sweeping schemes. The provided engineering insights therefore pave inevitable foundations to practice the next generation driving use cases using mmWave carriers.

Place, publisher, year, edition, pages
Piscataway, NJ: IEEE, 2019. Vol. 7, p. 6782-6795
Keywords [en]
NR V2X, next generation driving use cases, mmWave, low latency, beam sweeping
National Category
Communication Systems Telecommunications
Identifiers
URN: urn:nbn:se:hh:diva-38664DOI: 10.1109/ACCESS.2018.2888868Scopus ID: 2-s2.0-85058987989OAI: oai:DiVA.org:hh-38664DiVA, id: diva2:1273401
Note

Funding: This research is supported by the Ministry of Science and Technology (MOST) under the contracts MOST 106- 2221-E-194 -065 -MY2 and MOST 107-2218-E-009-046-, and is partially supported by the Advanced Institute of Manufacturing with High-tech Innovation (AIM-HI) from the Featured Area Research Center Program within the framework of the Higher Education Sprout Project by the Ministry of Education (MOE) in Taiwan.

Available from: 2018-12-21 Created: 2018-12-21 Last updated: 2019-01-25Bibliographically approved

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Vinel, Alexey

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