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Analysis and Improvement of Communications in Port Areas Using the Queuing Theory

Published online by Cambridge University Press:  13 February 2020

Sang-Won Park Open the ORCID record for Sang-Won Park [Opens in a new window] ,
Myoung-Ki Lee  and
Young-Soo Park
Sang-Won Park
Affiliation:
(Korea Maritime Institute, Busan, South Korea) (Ocean Science and Technology school, Korea Maritime and Ocean University, Busan, South Korea) (Korea Maritime and Ocean University, Busan, South Korea)
Myoung-Ki Lee
Affiliation:
(Korea Maritime Institute, Busan, South Korea) (Ocean Science and Technology school, Korea Maritime and Ocean University, Busan, South Korea) (Korea Maritime and Ocean University, Busan, South Korea)
Young-Soo Park*
Affiliation:
(Korea Maritime Institute, Busan, South Korea) (Ocean Science and Technology school, Korea Maritime and Ocean University, Busan, South Korea) (Korea Maritime and Ocean University, Busan, South Korea)
*
(E-mail: [email protected])
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Abstract

This work quantitatively analyses vessel traffic service (VTS) communications in ports and suggests improvements for more efficient control of the service. For this purpose, analysis of VTS communications was performed on VHF channel 12 in Busan North Port, South Korea. This communications service follows the queue of M/G/1 (the arrivals have a Poisson distribution, the service time is characterized by a general distribution, and with a single server). The degree of congestion of the communication channel was shown as the utilisation rate of the queue, which was 67·7% at peak times and 29·6% at non-peak times. To reduce congestion in the communication channel, we propose to separate the peak time control channel, exclude passing reporting, and decrease the reporting time. With separation of the peak time control channel, the utilisation rate decreased by 41·1%. The utilisation rate decreased by 5·7% when passing reporting was omitted, and by 8·3% when reporting time was reduced by 60%. The results of this study can be used as basic policy data to improve VTS, including reinforcement of the VTS officer's role and adjustment of the control report contents.

Keywords

Vessel Traffic Service (VTS)CommunicationQueue
Type
Research Article
Information
The Journal of Navigation , Volume 73 , Issue 4 , July 2020 , pp. 912 - 931
Copyright
Copyright © The Royal Institute of Navigation 2020

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