For some years, commentators have been predicting the 'convergence' of the Internet and
mobile industries. But what does convergence mean? Is it just about mobile phones providing
Internet access? Will the coming together of two huge industries actually be much more about
collision than convergence? In truth, there are lots of possibilities about what convergence
might mean, such as:
• Internet providers also supply mobile phones - or vice versa, of course.
• The user's mobile phone is replaced with a palmtop computer.
• The mobile Internet leads to a whole range of new applications.
The third generation (3G) mobile communication system is the next big thing in the world of mobile telecommunications. The first generation included analog mobile phones [e.g., Total Access Communications Systems (TACS), Nordic Mobile Telephone (NMT), and Advanced Mobile Phone Service (AMPS)], and the second generation (2G) included digital mobile phones [e.g., global system for mobile communications (GSM), personal digital cellular (PDC), and digital AMPS (D-AMPS)].
This book focuses on issues related to multiple access for cellular mobile communications,
with a specific interest in access arbitration through multiple access protocols situated at
the lower sub-layer of the second OSI layer, namely the medium access control (MAC)
In this chapter, first an introduction to cellular mobile communication systems is
With some six billion mobile subscriptions now in use worldwide, around three-quarters of the world’s inhabitants now have access to a mobile phone. Mobiles are arguably the most ubiquitous modern technology in some developing countries, more people have access to a mobile phone than to clean water, a bank account or even electricity. Mobile communications now offer major opportunities to advance human development from providing basic access to education or health information to making cash payments and stimulating citizen involvement in democratic processes.
GSM (Global System for Mobile Communications), is a standard set developed by the European Telecommunications Standards Institute (ETSI) to describe technologies for second generation digital cellular networks. Developed as a replacement for first generation analog cellular networks, the GSM standard originally described a digital, circuit switched network optimized for full duplex voice telephony. The standard was expanded over time to include first circuit switched data transport, then packet data transport via GPRS (General Packet Radio Services)....
GSM (Global System for Mobile Communications, originally Groupe Spécial Mobile), is a standard set developed by the European Telecommunications Standards Institute (ETSI) to describe technologies for second generation (2G) digital cellular networks. Developed as a replacement for first generation (1G) analog cellular networks, the GSM standard originally described a digital, circuit switched network optimized for full duplex voice telephony.
The Artech House Universal Personal Communications Series Ramjee Prasad, Series Editor CDMA for Wireless Personal Communications, Ramjee Prasad IP/ATM Mobile Satellite Networks, John Farserotu and Ramjee Prasad Multicarrier Techniques for 4G Mobile Communications, Shinsuke Hara and Ramjee Prasad OFDM for Wireless Multimedia Communications, Richard van Nee and Ramjee Prasad Radio over Fiber Technologies for Mobile Communications Networks, Hamed Al-Raweshidy and Shozo Komaki, editors Simulation and Software Radio for Mobile Communications, Hiroshi Harada and Ramjee Prasad TDD-CDMA for Wirele...
Our first chapter puts LTE into its historical context, and lays out its requirements and key
technical features. We begin by reviewing the architectures of UMTS and GSM, and
by introducing some of the terminology that the two systems use. We then summarize
the history of mobile telecommunication systems, discuss the issues that have driven the
development of LTE, and show how UMTS has evolved first into LTE and then into an
enhanced version known as LTE-Advanced. The chapter closes by reviewing the standardization
process for LTE....
Digital communications is a rapidly advancing applications area. Significant current activities
are in the development of mobile communications equipment for personal use, in
the expansion of the available bandwidth (and hence information carrying capacity) of the
backbone transmission structure through developments in optical fibre, and in the ubiquitous
use of networks for data communications.
This study focuses on the future direction in wireless/mobile telecommunications as a standalone concept for building wireless IP systems, including commercial, campus, local and global networks. It examines the integration of the Internet and mobile networks, which are merging as a result of global demand for seamless mobile communication.
This book follows from my first edition and is intended to provide a thorough,
up to date, treatment of wireless physical communications. The book is
derived from a compilation of course material that I have taught in a graduatelevel
course on physical wireless communications at Georgia Tech over the past
decade. This textbook differs from others on the subject by stressing mathematical
modeling and analysis. My approach is to include detailed derivations
from first principles.
During the past years, there has been a quickly rising interest in radio access technologies for providing mobile as well as nomadic and fixed services for voice, video, and data. The difference in design, implementation, and use between telecom and datacom technologies is also getting more blurred.
The telecom industry is on the rebound and the demand for more and newer wireless services is ever increasing. To meet these market demands, wireless providers have to deploy advanced radio access networks to enhance the mobile communications infrastructure. This forward-looking book delivers a comprehensive overview of the evolution of mobile radio access networks, focusing on high-level architectural issues that engineers and managers need to understand.
This briefing paper was commissioned by Ericsson (global provider of
telecommunications equipment and related services) and Zain (mobile operator
active in seven Middle Eastern and fifteen sub-Saharan African countries) in order
to describe the social and economic impact that mobile communication is having in
Sudan. The paper aims to give a concise overview of the key economic and social
effects of mobile telephony in Sudan and the social and economic development case
for continued investment in telecommunications infrastructure by foreign companies.
Tuyển tập các báo cáo nghiên cứu khoa học ngành toán học được đăng trên tạp chí toán học quấc tế đề tài: Mobile communication for Intellectually Challenged people: A proposed set of requirements for interface design on touch screen devices
The objective of the study: Analyze and evaluate the competitiveness of the state providing mobile communication services of a telecom company in Vietnam, comparing the strengths and weaknesses of the provision of services between the companies together and find out the problems to be solved in order to improve their competitiveness;...
Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article A USIM-Based Uniform Access Authentication Framework in Mobile Communication
Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Mobile communication for Intellectually Challenged people: A proposed set of requirements for interface design on touch screen devices
Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Interference Robust Transmission for the Downlink of an OFDM-Based Mobile Communications System