Wireless Networks and Mobile Computing

2016 ◽  
Author(s):  
Koushik Sinha ◽  
Sasthi C. Ghosh ◽  
Bhabani P. Sinha
2019 ◽  
Vol 118 (7) ◽  
pp. 27-33
Author(s):  
P.Prasanya Devi ◽  
R.S. Kannan ◽  
M. Ravindran

In this paper, we describe Wireless networks have seen unprecedented rise in their size and number of users in recent years. This unprecedented rise is attributed to the rise in the number of mobile computing devices. Moreover the amount of data that is handled by these wireless networks has increased in recent years. One such wireless network that is widely used but is still prone to attacks is WiFi. Wi-Fi protocol (IEEE 802.11), over the years has been upgraded many times, but these upgrades have mainly resulted in increase in the overall data rate of the communication. Little has been done to improve the security of the protocol. This research focuses on inherent flaws in Wired Equivalent Privacy protocol (WEP) used by the 802.11 standard, Temporal Key Integrity Protocol (TKIP) which is considered an interim solution to legacy 802.11 equipment. The demand for ubiquitous personal communications is driving the development of wireless networks that can accommodate mobile voice and data users who move throughout buildings, cities, or countries. The objective of this chapter is to provide the fundamentals of wireless networks so that the general readers can be able to easily grasp some of the ideas in this area.


Author(s):  
Ismail Khalil Ibrahim ◽  
Ashraf Ahmad ◽  
David Taniar

Mobile multimedia, referring to multimedia information exchange over wireless networks or wireless Internet, is made possible due to the popularity and evolution of mobile computing devices, coupled with fast and affordable mobile networks. This chapter discusses various state-of-the-art communication technologies to support mobile multimedia. The range of complexity of applications and services provided to end-users also play an important part in the success of mobile multimedia.


Author(s):  
Cristiano André da Costa ◽  
Jorge Luis Victoria Barbosa ◽  
Luciano Cavalheiro da Silva ◽  
Adenauer Corrêa Yamin ◽  
Cláudio Fernando Resin Geyer

The growing availability of wireless networks and the proliferation of portable devices have made mobile computing a reality. Furthermore, the widespread use of location systems stimulates the creation of context-aware and adaptive systems. Ubiquitous computing integrates and extends these approaches through a new proposal where users’ applications are available in a suitable adapted form, wherever they go and however they move. In this scenario, issues related to development of software need to be tackled. This chapter reviews essential concepts of the ubiquitous computing area, its evolution, and challenges that must be managed. To deal with these issues, the authors describe the main requirements for the development of ubiquitous software. This analysis starts with the discussion of limitations in the use of traditional programming models, and then goes on to the proposition of techniques to address these limitations. The authors trust that this discussion can help the future development of ubiquitous applications.


Author(s):  
Shaveta Bhatia

The progressive rise of mobile computing devices and wireless networks have created a lot of interest in location-based systems and services. The involvement of internet applications in almost every field has changed our lives. Location-based services are the services provided to mobile users according to their geographic locations. Each user wants to get the service according to his/her own interest. The general user's actions in location-based services are locating, searching, navigating, identification, and checking. The location identification has now become a critical attribute. Today, internet of things in the field of location-based services (LBS) provide services to the mobile users by explore the location depending on the geographical coordinates for their valuable needs. Mobile phones that are equipped with new technologies and supported by the presence and development of broadband mobile data networks have created new opportunities for the processing of location-based applications.


Author(s):  
Biju Issac

Wireless networks and the subsequent mobile communication are growing by leaps and bounds in the past years and the demand for connection without cables is certainly high. Nowadays, wireless networks are quite common and can be found on university campuses, corporate offices and in public places like hotels, airports, coffee shops and so forth. Not only are mobile devices getting smaller and cheaper, they are also becoming more efficient and powerful, capable of running applications and network services. This is causing the uncontrollable growth of mobile computing as we are witnessing today. Among the many number of applications and services that are executed by mobile devices, network and data services are in high demand. Brief descriptions of some selective wireless technologies that help mobile computing, like IEEE 802.11 networks (with infrastructure mode and ad-hoc mode), Bluetooth, HomeRF, WiMAX and cellular technologies are given below.


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