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http://dx.doi.org/10.12673/jant.2019.23.5.392

Wireless TDD Time Synchronization Technique Considering the Propagation Delay Between Mobile Vehicles  

Boo, Jung-il (R&D Center of Danam Systems INC)
Ha, Jeong-wan (R&D Center of Danam Systems INC)
Kim, Kang-san (R&D Center of Danam Systems INC)
Kim, Bokki (R&D Center of Danam Systems INC)
Publication Information
Journal of Advanced Navigation Technology / v.23, no.5, 2019 , pp. 392-399 More about this Journal
Abstract
In this paper, we have studied wireless time division duplex(TDD) time synchronization technique considering the propagation delay between mobile vehicles. The existing IEEE 1588 precision time protocol(IEEE 1588 PTP) algorithm was applied and the time synchronization between the two nodes was achieved through the propagation delay and clock offset time correction calculated between master slave nodes during wireless TDD communication. The time synchronization process and procedure of IEEE 1588 PTP algorithm were optimized, thereby reducing the propagation delay error sensitivity for real-time moving vehicles. The sync flag signal generated through the time correction has a time synchronization accuracy of max +252.5 ns within 1-symbol(1.74 M symbol/sec, ${\pm}287.35ns$) through test and measurement, and it was confirmed that the time synchronization between master slave nodes can be achieved through sync flag signal generated during GPS disturbance.
Keywords
Time division duplex; IEEE 1588 PTP; Time synchronization; Propagation delay; Clock_offset; Global positioning system;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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