Joint Application of Sliding Window and Full-Vector RLNC for Vehicular Platooning
Research output: Contribution to book/conference proceedings/anthology/report › Conference contribution › Contributed › peer-review
Contributors
Abstract
In order to maintain platooning, the message from Platoon Leader (PL) has to be received by all Platoon Members (PMs). However, the connectivity of the PL with moving PMs cannot be guaranteed all the time because of signal interference, mobility or limited coverage. Therefore we propose to use Random Linear Network Coding (RLNC) to improve reliability and latency. Sliding window RLNC is one of the methods that was developed for low latency. However, a feedback mechanism was necessary to tune the encoding window. Hence, Caterpillar Random Linear Network Coding (CRLNC) was developed as a practical approach to sliding window RLNC to avoid the feedback. In CRLNC, a fixed encoding window size is used. Delay and packet loss performance of CRLNC have not been evaluated in a multi-hop broadcast scenario. Therefore in this work, we apply CRLNC to the platooning scenario as well as investigate the effect of encoding window size and code rate. In addition, we apply CRLNC joint with the full-vector RLNC recoding in the vehicular platooning scenario. Full-vector RLNC recoding is a method combining all packets in the buffer to generate coded packets. Our simulation results show that when CRLNC coding technique is applied to vehicles, if four PMs broadcast after PL, the mean packet loss is reduced to 4%. On the other hand, when CRLNC jointly used with full-vector RLNC recoding, if three PMs broadcast, the mean packet loss is reduced to 0.2%. We compared our results with the store-and-forward paradigm called NoCode in which packet loss is 20%. Moreover, we observed that with a joint application of CRLNC and full-vector RLNC, the packet in-order delivery delay is almost as low as NoCode case, which shows that we do not compromise latency while increasing the reliability.
Details
Original language | English |
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Title of host publication | 2021 IEEE 11th Annual Computing and Communication Workshop and Conference, CCWC 2021 |
Editors | Rajashree Paul |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Pages | 1429-1435 |
Number of pages | 7 |
ISBN (electronic) | 9780738143941 |
Publication status | Published - 27 Jan 2021 |
Peer-reviewed | Yes |
Conference
Title | 11th IEEE Annual Computing and Communication Workshop and Conference, CCWC 2021 |
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Duration | 27 - 30 January 2021 |
City | Virtual, Las Vegas |
Country | United States of America |
Keywords
ASJC Scopus subject areas
Keywords
- multi-hop broadcasting, platooning, random linear network coding (RLNC), recoding, reliability