Optimization of the Network Structure for Exchange of Data on Control of the Corporate Telecommunication System Transport Network

2009 ◽  
Vol 68 (17) ◽  
pp. 1529-1539
Author(s):  
I. A. Saitov ◽  
Yu. G. Aleksikov
2019 ◽  
Vol 11 (14) ◽  
pp. 3933 ◽  
Author(s):  
Min Su ◽  
Weixin Luan ◽  
Zeyang Li ◽  
Shulin Wan ◽  
Zhenchao Zhang

The Chinese main air transport network (CMATN) is the framework for air passenger transport in the country. This study uses complex networks and an econometric model to analyze CMATN’s evolution and determinants. In terms of overall network structure, the network has always shown small-world properties, with smaller average path lengths (2.06–2.15) and larger clustering coefficients (0.68–0.77), while its cumulative degree distribution follows an exponential function. City passenger volumes conform to the degree power law function, which means that the more destinations a city connects to, the higher its passenger traffic will be. In major hub cities, such as Beijing, Shanghai, and Guangzhou, control power decreases, while Chengdu, Kunming, Chongqing, Xi’an, Urumqi, and other cities play an increasingly important role in CMATN. In terms of main route passenger volumes and formation, increases in GDP and tourism have had a promoting effect, while high-speed rail (HSR) poses a threat to overlapping routes. CMATN is primarily located in the central and eastern regions, focusing on China’s economy, tourism, and efficient HSR development. Although the competition from HSR affects the overall network structure of CMATN based on its influence on specific routes, we believe that the impact is limited due to the different transport attributes of the two networks. The research results of this study can become an information source for decision makers and provide a reference for air transport to seek sustainable development.


2021 ◽  
pp. 791-802
Author(s):  
M. G. Sreelekha ◽  
K. Krishnamurthy ◽  
M. V. L. R. Anjaneyulu

Author(s):  
Péter Fazekas

The aim of this chapter is to provide a brief yet comprehensive overview of the 3rd generation UMTS (Universal Mobile Telecommunication System) mobile network, with emphasis on its specific protocols. Therefore, in this chapter, the basic operation and protocol structure of UMTS network is described. The main architectural changes compared to GSM are shown, as well as the principles of the physical radio interface. The details of other relevant UMTS specific interfaces in the access network and their protocols are provided as well, along with the description of transport network solutions. The most relevant part of UMTS specifications, the radio interface protocols, are also presented.


2020 ◽  
Vol 20 (1) ◽  
pp. 23-31
Author(s):  
Sihem BOURI ◽  
◽  
Abdelhalim BENMANSOUR

1999 ◽  
Vol 1 ◽  
pp. S17-S17
Author(s):  
A FERNANDES ◽  
E DIAS ◽  
M FIUZA ◽  
I DIONISIO ◽  
F VEIGA ◽  
...  

2017 ◽  
Vol 102 (9) ◽  
pp. 1360-1374 ◽  
Author(s):  
Travis J. Grosser ◽  
Vijaya Venkataramani ◽  
Giuseppe (Joe) Labianca

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