Integration of micro and macro cellular networks for future land mobile communications

Author(s):  
A. Yamaguchi ◽  
H. Kobayashi ◽  
T. Mizuno
2013 ◽  
Vol 75 (4) ◽  
pp. 2037-2051 ◽  
Author(s):  
Hashem Kalbkhani ◽  
Sahar Jafarpour-Alamdari ◽  
Vahid Solouk ◽  
Mahrokh G. Shayesteh

2019 ◽  
pp. 6-11
Author(s):  
Kristina Guzhakovskaya ◽  
Yuriy Umnitsyn

The paper considers Global System for Mobile Communications, which plays the important role in contemporary society and carries new forms of dialog in the modern world. It is shown, that GSM-nets play two roles: firstly, they serve as communication tools for people who are in any point of world, and secondly, they can be used as tools for confidential data theft due to the old technology for telephone exchange setting, created as early as in the 1970s. Attacks using SS7 are often executed by hackers. After all, the attacker does not have to be close to the subscriber, and the attack can be made from anywhere on the planet. Therefore, to calculate the attacker is almost impossible, through this vulnerability can be hacked through almost any phone in the world. It will not be difficult to eavesdrop on conversations, intercept SMS, get access to the mobile Bank, social networks because of the vulnerability in the SS7 telephone infrastructure, through which service commands of cellular networks are transmitted. Due to the fact that the vulnerability with the Protocol SS7 is on the side of the operator, protection from such an attack is impossible. Until mobile operators are able to abandon this technology, this threat in the field of information security will remain relevant.


Author(s):  
Paramesh C. Upadhyay ◽  
Sudarshan Tiwari

Mobility is a natural phenomenon in cellular networks. The worldwide popularity of mobile communications and Internet has necessitated the merger of the two fast growing technologies to get their fullest advantages. The Internet protocol (IP) was designed for static hosts only. Therefore, in order to add mobility in Internet, the Internet protocol needs to be redefined. This paper is intended to present an overview of various mobility management schemes, available in literature, for IP-based mobile networks.


Sensors ◽  
2019 ◽  
Vol 20 (1) ◽  
pp. 58
Author(s):  
Erqing Zhang ◽  
Sixing Yin ◽  
Huisheng Ma

Ultra-reliable low-latency communication (URLLC) is one of the three usage scenarios anticipated for 5G, which plays an important role in advanced applications of vehicle-to-everything (V2X) communications. In this paper, the Stackelberg game-based power allocation problem was investigated in V2X communications underlaying cellular networks. Assuming that the macro-cellular base station (MBS) sets the interference prices to protect itself from the V2X users (VUEs), the Stackelberg game was adopted to analyze the interaction between MBS and VUEs, where the former acts as a leader and the latter act as followers. For MBS, we aimed at maximizing its utility from interference revenue while considering the cost of interference. Meanwhile, the VUEs aimed at maximizing their utilities per unit power consumption. We analyzed the Stackelberg model and obtained the optimal prices for MBS and optimal transmit powers for VUEs. Simulation results demonstrated the superiority of the proposed Stackelberg game-based power allocation scheme in comparison with the traditional power allocation strategy. Meanwhile, the proposed scheme achieved a better trade-off between economic profit and power consumption.


2019 ◽  
Vol 2019 (2) ◽  
pp. 24-30
Author(s):  
Василий Типаков ◽  
Vasily Sergeevich Tipakov ◽  
Тимур Яковлев ◽  
Timur Aleksandrovich Yakovlev

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


2017 ◽  
Vol 66 (10) ◽  
pp. 9214-9225 ◽  
Author(s):  
Xiaolei Jiang ◽  
Han Wang ◽  
Zhijun Zhang ◽  
Xinyu Gao ◽  
Linglong Dai ◽  
...  

Author(s):  
Mohammad Mahfuzul Islam ◽  
Manzur Murshed

Limitation of wireless resources is the main obstacle for meeting the widespread demands in the cellular network technology. The crisis of resources is further augmented when reservation is made for supporting the migrating users from the neighbouring cells. Many mobility support advanced technologies and mobile communications protocols have been developed to optimally utilize wireless resources. Some policies support the heterogeneous access technologies for multimedia services in mobile networks. Some other policies exploit the mobility information from the current and neighbouring cells to dynamically adjust the key components of resource management such as resource reservation, resource allocation, and call admission control policy to adapt quickly with network traffic changes. This chapter provides a comprehensive overview of various methods to explain the mechanisms for managing these key components of resource management for cellular networks.


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