Reducing Message Collisions in Sensing-Based Semi-Persistent Scheduling (SPS) by Using Reselection Lookaheads in Cellular V2X
In the C-V2X sidelink Mode 4 communication, the sensing-based semi-persistent scheduling (SPS) implements a message collision avoidance algorithm to cope with the undesirable effects of wireless channel congestion. Still, the current standard mechanism produces a high number of packet collisions, wh...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-12-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/18/12/4388 |
| _version_ | 1828274463885492224 |
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| author | Yongseok Jeon Seungho Kuk Hyogon Kim |
| author_facet | Yongseok Jeon Seungho Kuk Hyogon Kim |
| author_sort | Yongseok Jeon |
| collection | DOAJ |
| description | In the C-V2X sidelink Mode 4 communication, the sensing-based semi-persistent scheduling (SPS) implements a message collision avoidance algorithm to cope with the undesirable effects of wireless channel congestion. Still, the current standard mechanism produces a high number of packet collisions, which may hinder the high-reliability communications required in future C-V2X applications such as autonomous driving. In this paper, we show that by drastically reducing the uncertainties in the choice of the resource to use for SPS, we can significantly reduce the message collisions in the C-V2X sidelink Mode 4. Specifically, we propose the use of the “lookahead„, which contains the next starting resource location in the time-frequency plane. By exchanging the lookahead information piggybacked on the periodic safety message, vehicular user equipment (UEs) can eliminate most message collisions arising from the ignorance of other UEs’ internal decisions. Although the proposed scheme would require the inclusion of the lookahead in the control part of the packet, the benefit may outweigh the bandwidth cost, considering the stringent reliability requirement in future C-V2X applications. |
| first_indexed | 2024-04-13T06:34:51Z |
| format | Article |
| id | doaj.art-9c3e46a322c04709aaf6991f50b8c630 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-13T06:34:51Z |
| publishDate | 2018-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-9c3e46a322c04709aaf6991f50b8c6302022-12-22T02:57:57ZengMDPI AGSensors1424-82202018-12-011812438810.3390/s18124388s18124388Reducing Message Collisions in Sensing-Based Semi-Persistent Scheduling (SPS) by Using Reselection Lookaheads in Cellular V2XYongseok Jeon0Seungho Kuk1Hyogon Kim2Department of Computer Science and Engineering, Korea University, Anam-Dong, Sungbuk-Gu, Seoul 02841, KoreaDepartment of Computer Science and Engineering, Korea University, Anam-Dong, Sungbuk-Gu, Seoul 02841, KoreaDepartment of Computer Science and Engineering, Korea University, Anam-Dong, Sungbuk-Gu, Seoul 02841, KoreaIn the C-V2X sidelink Mode 4 communication, the sensing-based semi-persistent scheduling (SPS) implements a message collision avoidance algorithm to cope with the undesirable effects of wireless channel congestion. Still, the current standard mechanism produces a high number of packet collisions, which may hinder the high-reliability communications required in future C-V2X applications such as autonomous driving. In this paper, we show that by drastically reducing the uncertainties in the choice of the resource to use for SPS, we can significantly reduce the message collisions in the C-V2X sidelink Mode 4. Specifically, we propose the use of the “lookahead„, which contains the next starting resource location in the time-frequency plane. By exchanging the lookahead information piggybacked on the periodic safety message, vehicular user equipment (UEs) can eliminate most message collisions arising from the ignorance of other UEs’ internal decisions. Although the proposed scheme would require the inclusion of the lookahead in the control part of the packet, the benefit may outweigh the bandwidth cost, considering the stringent reliability requirement in future C-V2X applications.https://www.mdpi.com/1424-8220/18/12/4388cellular V2X (C-V2X)sensing-basedsemi-persistent scheduling (SPS)message collision resolution |
| spellingShingle | Yongseok Jeon Seungho Kuk Hyogon Kim Reducing Message Collisions in Sensing-Based Semi-Persistent Scheduling (SPS) by Using Reselection Lookaheads in Cellular V2X Sensors cellular V2X (C-V2X) sensing-based semi-persistent scheduling (SPS) message collision resolution |
| title | Reducing Message Collisions in Sensing-Based Semi-Persistent Scheduling (SPS) by Using Reselection Lookaheads in Cellular V2X |
| title_full | Reducing Message Collisions in Sensing-Based Semi-Persistent Scheduling (SPS) by Using Reselection Lookaheads in Cellular V2X |
| title_fullStr | Reducing Message Collisions in Sensing-Based Semi-Persistent Scheduling (SPS) by Using Reselection Lookaheads in Cellular V2X |
| title_full_unstemmed | Reducing Message Collisions in Sensing-Based Semi-Persistent Scheduling (SPS) by Using Reselection Lookaheads in Cellular V2X |
| title_short | Reducing Message Collisions in Sensing-Based Semi-Persistent Scheduling (SPS) by Using Reselection Lookaheads in Cellular V2X |
| title_sort | reducing message collisions in sensing based semi persistent scheduling sps by using reselection lookaheads in cellular v2x |
| topic | cellular V2X (C-V2X) sensing-based semi-persistent scheduling (SPS) message collision resolution |
| url | https://www.mdpi.com/1424-8220/18/12/4388 |
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