Exploring the Open Problems and Future Trends Concerning Handovers in Heterogeneous Wireless Networks: A Review

2014 ◽  
Vol 70 (3) ◽  
Author(s):  
Bushra Naeem ◽  
Uche A. K. Chude-Okonkwo ◽  
Razali Ngah ◽  
Siti Z. Mohd Hashim ◽  
Wajahat Maqbool ◽  
...  
Keyword(s):  
Wireless Networks ◽  
Communication Systems ◽  
New Technologies ◽  
Heterogeneous Wireless Networks ◽  
Future Trends ◽  
Large Area ◽  
Open Problems ◽  
Advantages And Disadvantages ◽  
Seamless Connectivity ◽  
Vertical Handovers

The advancements in the telecoms industry have led to the emergence of many new technologies to meet communication requirements worldwide. Consumers have largely been using GSM, CDMA and WiFi. New developments have given birth to more robust communication systems including WiMax and LTE. Lay users are not aware of the technicalities, advantages and disadvantages of these technologies. Therefore, there is a state of great confusion among the users of this generation as to which technology is the best for them to use. Each of these technologies has pros and cons over one another. For example, LTE covers a large area and offers the highest speed, but the user has to pay for it; however, WiFi covers only hotspots but the use is free. Future heterogeneous networks (HetNets) will enable users to achieve seamless connectivity through vertical handovers while providing them the beneficial features of each technology. For HetNets many issues still need to be addressed. This paper explores some of the open problems and future trends related to the handovers in heterogeneous wireless networks. The dynamics with respect to handovers and the network load of cellular architecture in the coming era in the field of wireless communications are also presented. In addition, first a foundation is laid on the IEEE media independent handover and its importance and then the problem of load balancing and its impact on the realization of future HetNets is explained. Finally, an important problem during vertical handovers, known as the ping-pong effect is explained. The open problems for researchers have been identified for the aforementioned issues.

Performance evaluation of softer vertical handovers in multiuser heterogeneous wireless networks

2015 ◽  
Vol 23 (1) ◽  
pp. 159-176 ◽  
Author(s):  
Alessandro Bazzi ◽  
Barbara M. Masini ◽  
Alberto Zanella ◽  
Davide Dardari
Keyword(s):  
Wireless Networks ◽  
Performance Evaluation ◽  
Heterogeneous Wireless Networks ◽  
Vertical Handovers

scholarly journals Analysis of mathematical models of mobility of communication systems of special purpose radio communication systems

2021 ◽  
Vol 4 (2(60)) ◽  
pp. 39-44
Author(s):  
Oleksii Nalapko ◽  
Oleg Sova ◽  
Andrii Shyshatskyi ◽  
Anatolii Hasan ◽  
Vira Velychko ◽  
...  
Keyword(s):  
Wireless Networks ◽  
Mathematical Models ◽  
Communication Systems ◽  
Radio Networks ◽  
Mobile Radio ◽  
Mobility Models ◽  
Radio Communication ◽  
Deterministic Models ◽  
Advantages And Disadvantages ◽  
Individual Nodes

The object of research is the military radio communication system. One of the problems in improving the effectiveness of military radio communication systems is the correct description of the movement process in them. Efficient routing protocols are only possible if reliable information on network topology for network nodes is available. Thus, with this information, packets can be forwarded correctly between the sender and the recipient. Given that the mobility of individual nodes is insignificant in special wireless networks, nodes in the network show the mobility properties of a group of nodes. This observation is directly related to the very existence of military wireless networks with the ability to organize themselves, that is, to support group cooperation and group activities. In this work the problem of analysis (decomposition) of the mobility models of military radio communication networks with the possibility of self-organization is solved. The classification of mobility patterns, the description of individual mobility models and the analysis of various aspects currently available, as well as those properties lacking in the attempt to simulate the movement of individual nodes, have been carried out. During the research, the analysis of random, semi-deterministic and deterministic models was carried out. The advantages and disadvantages of the above models have been identified. In the course of the research, the authors of the work used the main principles of the theory of mass service, the theory of automation, the theory of complex technical systems, as well as general scientific methods of knowledge, namely analysis and synthesis. The research results will be useful in: ‒ synthesis of mathematical models of node mobility; ‒ evaluation of the effectiveness of the science-based tool for assessing the mobility of nodes; ‒ validation of recommendations to improve the efficiency of mobile radio networks; ‒ analysis of the radio-electronic situation during the conduct of military operations (operations); ‒ creating advanced technologies to improve the efficiency of mobile radio networks.

scholarly journals SMARTCITY WIRELESS FENCE AND INTERACTIVE INFRASTRUCTURE MODEL

2021 ◽  
Vol 1 (13) ◽  
pp. 63-80
Author(s):  
Nikita Moshenchenko ◽  
Bohdan Zhurakovskyi
Keyword(s):  
Wireless Networks ◽  
High Speed ◽  
New Technologies ◽  
Human Life ◽  
Low Cost ◽  
Main Task ◽  
High Data ◽  
Advantages And Disadvantages ◽  
802.11 Networks ◽  
Local Access

This article considers the problem of the process of using robots and their control in catering establishments with the help of wireless networks, shows the main features of existing solutions in the field of robotics and networks, their advantages and disadvantages. Wireless networks for their application in robot control have been studied. The main task of wireless networks is to provide high-speed local access to services and data in a certain area, the exchange of information between users within the territory. Building wireless Wi-Fi (IEEE 802.11) networks is now in high demand due to a host of benefits. Among the main advantages of this technology are the most attractive: low cost of equipment; flexibility of equipment use; high data rate. This technology provides the ability to run a number of custom applications. The infrastructure of wireless networks is the basis on which the further implementation of custom applications is built and the support of key services for the company is provided. Such services include network management, information security and service quality assurance (QoS) mechanisms. A virtual environment with the appropriate software was configured, a network simulation was performed, and its results were recorded. This solution can be used in catering establishments. It allows to introduce new technologies into the sphere of human life and increase the profits of food business owners.

Application of MADM Method VIKOR for Vertical Handoff in Heterogeneous Wireless Networks

2012 ◽  
Vol E95-B (2) ◽  
pp. 599-602 ◽  
Author(s):  
Enrique STEVENS-NAVARRO ◽  
Rubén GALLARDO-MEDINA ◽  
Ulises PINEDA-RICO ◽  
Jesús ACOSTA-ELIAS
Keyword(s):  
Wireless Networks ◽  
Heterogeneous Wireless Networks ◽  
Vertical Handoff
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