Two-dwell code acquisition techniques by advanced spatio-temporal antennas for the radio access of 3G mobile communications

2003 ◽  
Author(s):  
G. Giunta
Keyword(s):  
Mobile Communications ◽  
Code Acquisition ◽  
Radio Access ◽  
Spatio Temporal

scholarly journals Radio Access Technologies for Broadband Mobile Communications

2017 ◽  
Vol E100.B (9) ◽  
pp. 1674-1687
Author(s):  
Mamoru SAWAHASHI ◽  
Kenichi HIGUCHI
Keyword(s):  
Mobile Communications ◽  
Radio Access

Spatio-Temporal Video Transcoder for Streaming over Mobile Communications Networks

2006 ◽  
Vol E89-B (10) ◽  
pp. 2678-2686 ◽  
Author(s):  
J.-W. KIM ◽  
G.-R. KWON ◽  
J.-S. LEE ◽  
N.-H. KIM ◽  
S.-J. KO
Keyword(s):  
Mobile Communications ◽  
Communications Networks ◽  
Spatio Temporal

scholarly journals Problems of constructing broadband radio access systems of mobile radio communication

2019 ◽  
Vol 2019 (2) ◽  
pp. 24-30
Author(s):  
Василий Типаков ◽  
Vasily Sergeevich Tipakov ◽  
Тимур Яковлев ◽  
Timur Aleksandrovich Yakovlev
Keyword(s):  
Cellular Networks ◽  
Mobile Networks ◽  
Mobile Communications ◽  
Current Trend ◽  
Mobile Radio ◽  
Base Stations ◽  
Radio Communication ◽  
Radio Access ◽  
Broadband Radio ◽  
Internal Network

The article is focused on the problem of degrading the signals of broadband 3G / 4G mobile radio access systems in places of subscribers clustering and in so-called “dead zones”. The analysis of the actual principles of building mobile networks has been carried out, the main disadvantages of the approaches to the development of cellular networks have been identified. The current trend of building macro cells in the urban environment has lost its effectiveness due to the increasing frequencies used; it has to be replaced by a fundamentally new way of planning mobile networks. A new principle of providing access to mobile communications “from inside to outside” is proposed, which takes into account the needs of a large number of subscribers in the premises. It is based on setting the maximum number of internal base stations fully meeting the needs of internal network users. Such a distinction will positively affect all subscribers and improve the experience from using the high-quality services of the mobile operators, which will result in increasing the economic performance

scholarly journals Network Efficiency Amendment Utilizing Cloud Radio Access Network In Mobile Communications

2018 ◽  
Vol 7 (4.6) ◽  
pp. 350
Author(s):  
Karthikala. P ◽  
Dr. C.Arunachala Perumal ◽  
Ms. M.Ramya
Keyword(s):  
Mobile Communications ◽  
Optimization Design ◽  
Access Network ◽  
Telecommunications Industry ◽  
Data Traffic ◽  
Network Efficiency ◽  
Green Communication ◽  
Radio Access Network ◽  
Cloud Radio Access Network ◽  
Radio Access

Mobile data traffic is finding exponential growth currently in telecommunications industry. It has become important to concentrate on both spectral and energy efficiencies in utilizing cellular networks under green communication standpoint. Thus, for 5G the utmost priority is that to increase data traffic and reduce the total network energy ingesting by half. The proposed work is to design the Cloud Radio Access Network (C-RAN) with energy efficient, flexible and capacity-enhanced features by effectively bundling and establishing relation between BBU and RRU utilizing Catechistic technique. Mathematical results with realistic parameters prove that the projected optimization design clearly improve the energy efficiency of C-RAN’s compared to standard schemes. 

Security in 2.5G Mobile Systems

2009 ◽  
pp. 2752-2765
Author(s):  
Christos Xenakis
Keyword(s):  
Mobile Communications ◽  
Data Transfer ◽  
Access Network ◽  
Mobile Systems ◽  
Security Architecture ◽  
Security Measures ◽  
Packet Radio ◽  
Related Data ◽  
Radio Access ◽  
Fixed Part

The global system for mobile communications (GSM) is the most popular standard that implements second generation (2G) cellular systems. 2G systems combined with general packet radio services (GPRS) are often described as 2.5G, that is, a technology between the 2G and third generation (3G) of mobile systems. GPRS is a service that provides packet radio access for GSM users. This chapter presents the security architecture employed in 2.5G mobile systems focusing on GPRS. More specifically, the security measures applied to protect the mobile users, the radio access network, the fixed part of the network, and the related data of GPRS are presented and analyzed in detail. This analysis reveals the security weaknesses of the applied measures that may lead to the realization of security attacks by adversaries. These attacks threaten network operation and data transfer through it, compromising end users and network security. To defeat the identified risks, current research activities on the GPRS security propose a set of security improvements to the existing GPRS security architecture.

Security in 2.5G Mobile Systems

2008 ◽  
pp. 351-363
Author(s):  
Christos Xenakis
Keyword(s):  
Mobile Communications ◽  
Data Transfer ◽  
Access Network ◽  
Mobile Systems ◽  
Security Architecture ◽  
Security Measures ◽  
Packet Radio ◽  
Related Data ◽  
Radio Access ◽  
Fixed Part

The global system for mobile communications (GSM) is the most popular standard that implements second generation (2G) cellular systems. 2G systems combined with general packet radio services (GPRS) are often described as 2.5G, that is, a technology between the 2G and third generation (3G) of mobile systems. GPRS is a service that provides packet radio access for GSM users. This chapter presents the security architecture employed in 2.5G mobile systems focusing on GPRS. More specifically, the security measures applied to protect the mobile users, the radio access network, the fixed part of the network, and the related data of GPRS are presented and analyzed in detail. This analysis reveals the security weaknesses of the applied measures that may lead to the realization of security attacks by adversaries. These attacks threaten network operation and data transfer through it, compromising end users and network security. To defeat the identified risks, current research activities on the GPRS security propose a set of security improvements to the existing GPRS security architecture.

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