Causality-Sensitive Scheduling to Reduce Latency in Vehicle-to-Vehicle Interactions
This paper shows through real-life measurement that bi-directional vehicle-to-vehicle (V2V) communication latency can be dominated by sidelink scheduling delay when causality is not taken into account. Moreover, the large delay persists for a few seconds at a time once it occurs. In applications lik...
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MDPI AG
2024-11-01
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| Online Access: | https://www.mdpi.com/1424-8220/24/22/7142 |
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| author | Hojeong Lee Seungmo Kang Hyogon Kim |
| author_facet | Hojeong Lee Seungmo Kang Hyogon Kim |
| author_sort | Hojeong Lee |
| collection | DOAJ |
| description | This paper shows through real-life measurement that bi-directional vehicle-to-vehicle (V2V) communication latency can be dominated by sidelink scheduling delay when causality is not taken into account. Moreover, the large delay persists for a few seconds at a time once it occurs. In applications like maneuver coordination between autonomous vehicles or in platoon, such delay can be highly detrimental to safety and efficiency. We investigate the source of the problem and propose a solution that factors in causality in interactive communication. Specifically, we develop a constraint under which the resource positions are automatically aligned between the communicating vehicles, and the delay spikes are provably eliminated. Through the measurements on commercial V2X devices, we confirm that enforcing the constraint can remove latency spikes so that 5G sidelink can be more easily applied to time-sensitive interactions between vehicles. |
| format | Article |
| id | doaj-art-31167aaef0ee408996e2c3b9f3091a7f |
| institution | OA Journals |
| issn | 1424-8220 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj-art-31167aaef0ee408996e2c3b9f3091a7f2025-08-20T02:04:43ZengMDPI AGSensors1424-82202024-11-012422714210.3390/s24227142Causality-Sensitive Scheduling to Reduce Latency in Vehicle-to-Vehicle InteractionsHojeong Lee0Seungmo Kang1Hyogon Kim2Department of Computer Science and Engineering, Korea University, Anam-Dong, Sungbuk-Gu, Seoul 02841, Republic of KoreaDepartment of Computer Science and Engineering, Korea University, Anam-Dong, Sungbuk-Gu, Seoul 02841, Republic of KoreaDepartment of Computer Science and Engineering, Korea University, Anam-Dong, Sungbuk-Gu, Seoul 02841, Republic of KoreaThis paper shows through real-life measurement that bi-directional vehicle-to-vehicle (V2V) communication latency can be dominated by sidelink scheduling delay when causality is not taken into account. Moreover, the large delay persists for a few seconds at a time once it occurs. In applications like maneuver coordination between autonomous vehicles or in platoon, such delay can be highly detrimental to safety and efficiency. We investigate the source of the problem and propose a solution that factors in causality in interactive communication. Specifically, we develop a constraint under which the resource positions are automatically aligned between the communicating vehicles, and the delay spikes are provably eliminated. Through the measurements on commercial V2X devices, we confirm that enforcing the constraint can remove latency spikes so that 5G sidelink can be more easily applied to time-sensitive interactions between vehicles.https://www.mdpi.com/1424-8220/24/22/7142vehicle-to-vehicle (V2V)cellular V2Xsidelinkinteractive applicationsresource allocationdelay spikes elimination |
| spellingShingle | Hojeong Lee Seungmo Kang Hyogon Kim Causality-Sensitive Scheduling to Reduce Latency in Vehicle-to-Vehicle Interactions Sensors vehicle-to-vehicle (V2V) cellular V2X sidelink interactive applications resource allocation delay spikes elimination |
| title | Causality-Sensitive Scheduling to Reduce Latency in Vehicle-to-Vehicle Interactions |
| title_full | Causality-Sensitive Scheduling to Reduce Latency in Vehicle-to-Vehicle Interactions |
| title_fullStr | Causality-Sensitive Scheduling to Reduce Latency in Vehicle-to-Vehicle Interactions |
| title_full_unstemmed | Causality-Sensitive Scheduling to Reduce Latency in Vehicle-to-Vehicle Interactions |
| title_short | Causality-Sensitive Scheduling to Reduce Latency in Vehicle-to-Vehicle Interactions |
| title_sort | causality sensitive scheduling to reduce latency in vehicle to vehicle interactions |
| topic | vehicle-to-vehicle (V2V) cellular V2X sidelink interactive applications resource allocation delay spikes elimination |
| url | https://www.mdpi.com/1424-8220/24/22/7142 |
| work_keys_str_mv | AT hojeonglee causalitysensitiveschedulingtoreducelatencyinvehicletovehicleinteractions AT seungmokang causalitysensitiveschedulingtoreducelatencyinvehicletovehicleinteractions AT hyogonkim causalitysensitiveschedulingtoreducelatencyinvehicletovehicleinteractions |