Using LAU information in mobile communication for high-speed user selection

2016 ◽  
Author(s):  
Zhiqiang Lv ◽  
Saibin Yao ◽  
Yongjia Qi ◽  
Dan Zhu ◽  
Hang Su
Keyword(s):  
Mobile Communication ◽  
High Speed ◽  
User Selection

Train-mounted Broadband Monopole Antenna for 5G Communication

2021 ◽  
Vol 36 (7) ◽  
pp. 879-884
Author(s):  
Hao Li ◽  
Lu Xu ◽  
Feng Qian ◽  
Yong Zhou
Keyword(s):  
Mobile Communication ◽  
Communication Systems ◽  
High Speed ◽  
High Gain ◽  
Monopole Antenna ◽  
Mobile Terminals ◽  
High Speed Railway ◽  
Public Transport System ◽  
Fifth Generation ◽  
5G Mobile Communication

As a convenient and efficient public transport system, high speed railway (HSR) was rapidly deployed in China. Since the fifth generation (5G) mobile communication system is commercially applied, it is necessary for mobile terminals antennas to cover multiple operating bands to be compatible with various communication systems. Here a HSR-mounted broadband and high-gain monopole antenna is proposed. By using the meander technology and introducing the tapered structure, the proposed antenna operates over a bandwidth of 694-960 MHz and 1350-5975 MHz (VSWR<1.8), which covers both 2G-5G mobile communication and WiFi frequency bands. The dimensions of the proposed antenna are 400 mm × 330 mm × 78 mm. The measured average gain is 6.11 dBi over the entire bandwidth.

scholarly journals Development of mobile communication systems for high-speed railway

2021 ◽  
Vol 1 (1) ◽  
pp. 29-34
Author(s):  
Nedžad Branković ◽  
Aida Kalem ◽  
Adisa Medić
Keyword(s):  
Mobile Communication ◽  
Mobile Communications ◽  
Traffic Management ◽  
Communication Systems ◽  
High Speed ◽  
Data Communication ◽  
Mobile Communication Systems ◽  
Transport Services ◽  
Traffic Management System ◽  
Set Up

Development of high-speed railways set up challenges for new communication technologies. With the increase in speed, new requirements for communication systems have emerged that HSR requires greater reliability, capacity and shorter response time for efficient and safe operations. Mobile communication systems are crucial for the competitiveness of the railway industry and therefore have become one of the priorities addressed by the participants in the railway system to take advantage of technological opportunities to improve operational processes and the quality of provided transport services. The European Rail Traffic Management System (ERTMS) uses the Global System for Mobile Communications for Railways (GSM-R) for voice and data communication to communicate between trains and control centers. The International Railway Union is exploring new ways of communicating for high-speed railways because as speed increases this system becomes unreliable in information transmission. This paperwork presents an analysis of the evolution of communications on European railways since the usage of GSM-R. In addition, an overview of the various alternative solutions proposed during the time (LTE-R, Future Railway Mobile Communication System) as possible successors to GSM-R technology is given.

scholarly journals Development of new bridge inspection system using 5G and AI under Cloud condition

2021 ◽  
Author(s):  
Mai Yoshikura ◽  
Takahiro Minami ◽  
Tomotaka Fukuoka ◽  
Makoto Fujiu ◽  
Junichi Takayama ◽  
...  
Keyword(s):  
Mobile Communication ◽  
High Speed ◽  
New Technology ◽  
Image Data ◽  
Growth Period ◽  
Concrete Bridges ◽  
Information And Communications Technology ◽  
Inspection System ◽  
Bridge Inspection ◽  
Inspection Work

In Japan, the deterioration of bridges constructed in the high economic growth period is progressing, and the maintenance of those bridges is a problem. Municipalities, as road administrators, are required to conduct close visual inspections of bridges (longer than 2m) once every five years, but municipalities face difficulties due to lack of financial and human resources. For this reason, the research of inspection and diagnosis technology is advanced for efficient inspection work. Especially, it is the new technology of ICT(information and communications technology), such as AI analysis of image data of bridge photographs. In this study, we developed a bridge inspection support system that automatically detects cracks in concrete bridges from bridge photographs. This system uses AI of image processing by deep learning. By using AI, we will be able to detect cracks in a short time and inspect bridges more efficiently. However, it requires many photographs of huge amount of data for image analysis. And those images take time to upload to the system by mobile communication. Therefore, we verified the system operation using 5G mobile communication, which is characterized by high speed and large capacity.

Mobile Communication Technology

2017 ◽  
pp. 73-96
Keyword(s):  
Communication Networks ◽  
Communication Technology ◽  
Mobile Communication ◽  
High Speed ◽  
Telecommunication Network ◽  
High Data ◽  
Generation Network ◽  
Types Of Information ◽  
Voice Data ◽  
Mobile Communication Technology

Since their birth in the early seventeenth and all along their different generations, mobile communication networks have crossed important evolutionary phases aiming to define increasingly sophisticated technologies allowing the provision of seamless global roaming, quality of service, and high data rates. Today, numerous technologies are co-existing to provide a unifying set of services. Improvements in telecommunication network infrastructures, evolution of digital technologies and standardization have together made it viable to use existing data networks for multimedia applications. This clearly reverses the trend of the past where networks were dedicated to a specific application. Integration of all types of information voice, data, video and image into a single network infrastructure is known as network convergence. The end result of this convergence is commonly referred to as the next-generation network (NGN), which, conceptually anyway, combines high-speed with the best features of each network. This chapter gives the details about the details of mobile communication technology.

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