{"@context":"https://schema.org","@type":"ScholarlyArticle","headline":"Provisioning High-Precision Clock Synchronization Between UAVs for Low Latency Networks","abstract":"Unmanned aerial vehicles (UAVs), require low-latency control for accurate mission execution and automation in vehicular or industrial applications. To facilitate clock synchronization in ensuring low-latency performance for UAVs, we propose the Mobile Edge Clock Server (MECS), a software-based timestamping mechanism tailored for UAVs, by modifying the poll process in Network Time Protocol (NTP) and merging GPS signal resources. Through the application of the Raw-offset filter, we also propose precise MECS (P-MECS), aimed at achieving high precision by considering the characteristics of GPS modules and conducting an in-depth analysis of signals. The MECS and P-MECS resulted in improving clock accuracy and reducing inter-UAV synchronization error to

$\\frac {1}{129}$

(99.2%) and

$\\frac {1}{19,402}$

(99.99%), respectively, compared to NTP on WLAN, and to

$\\frac {1}{32}$

(96.9%) and

$\\frac {1}{4,762}$

(99.98%), respectively, compared to Chrony on WLAN.","author":[{"@type":"Person","name":"Hooyeop Shim"},{"@type":"Person","name":"Hyeontae Joo"},{"@type":"Person","name":"Kiseok Kim"},{"@type":"Person","name":"Seongjoon Park"},{"@type":"Person","name":"Hwangnam Kim"}],"identifier":[{"@type":"PropertyValue","propertyID":"DOI","value":"10.1109/access.2024.3516856"}],"isPartOf":{"@type":"Periodical","name":"IEEE Access"},"citation":{"@type":"CreativeWork","citationCount":4},"encoding":{"@type":"MediaObject","contentUrl":"https://doi.org/10.1109/access.2024.3516856","encodingFormat":"application/pdf"}}