1. INTRODUCTION

1. INTRODUCTION
In a world of rapid technological change, there is a greater need for people to communicate and connect with each other and take appropriate and timely access to information regardless of the location of each of the individuals or the information. The growing demands and requirements for ubiquitous wireless communication systems have led to the need for better understanding of key issues in communication theory and electromagnetic and its implications for the design of high capacity wireless systems. In constant development of mobile environments, the major wireless providers in the market kept on monitoring the growth of 4th generation (4G) mobile technology. 2G and 3G are well established as a mobile power technology worldwide. 3G is the obstacle to obtaining a market share for many different reasons and 4G is reaching a certain confidence.

In 2010 the total mobile subscriber base in North America, Europe and Asia-Pacific, is expected to grow to 2.5 billion and the penetration is over 50%. This kind of demand growth will require support from higher-capacity networks.







FIGURE 1 ESTIMATED a combined population of mobile subscribers

Given the technology of large technology, 4G mobile as an example, give people for more convenience and ease of lifestyle. With the "anytime, anywhere, anything," the ability, the 4G wireless technology will benefit all people regardless of time and place. Taking into account the global perspective, this technology is to be the way to communicate and connect all the time with the most pervasive. Therefore, given the ubiquity of networks, electronic commerce (or m-commerce), unified messaging and networking peer-to-peer, expansion into wireless and mobile environment must reach its fullest potential. The trail goes to the 4G mobile technology includes many significant trends. Major players have been investing and 2G mobile technology success. 4G mobile technologies are perceived to provide fast, high data rate or bandwidth, and offer packetized data communications. Since 4G is still under the cloud of the creation of sensible rules, the forces of the ITU and the IEEE as a number of tasks to work on the possible realization of the 4G mobile standards as well. The latest Internet users experiences boom in the industry forced to look for means to provide high data rate regardless of mobility.4G is being discussed as a solution to research and vision and needs are being standardized in various standards bodies. 4G service vision is offered of this research. There are still large room for the purpose of the vision of application services: 3G is lagging behind in its marketing and about a decade of change is left for 4G. However, we believe that this work promotes the discussion of 4G services through the presentation of our vision of 4G services.
This paper also outlines the current trends of the next generation of wireless communications and investigate candidates 4G technologies. Based on this research, four scenarios will be discussed to predict and analyze 4G. The final section offers some of the political implications and issues.


What is 3G?
- 3G refers to third generation mobile telephony (ie, cellular) technology. The third generation, as its name suggests, follows two earlier generations (1G and 2G).
- The 3G technology is now well established current mobiles across the world.

What is 4G?
- Following the storyline of the rules of cell phone technology has lengthened by 1G, 2G, 3G, 4G describes the world completely new value without advanced 3G networks. The third generation
- 4G, which is also known as "beyond 3G" or "fourth generation" mobile technology, refers to changes in brand new and complete replacement of 3G wireless communications.
- As the data transmission speeds greater than 2G to 3G, the jump from 3G to 4G again promises even higher data rates that existed in previous generations. 4G promises voice, data and multimedia quality in real time (streaming) are all the time and anywhere.







Generation mobile networks:


➢ The first generation (1G) analog voice systems
➢ Second Generation (2G) digital voice systems
➢ second generation - advanced (2.5 G): The combination of voice and data communications
➢ Third Generation (3G) digital voice and data communications:

• Development of a broader mobile network
• Manipulation of Internet access, email, messaging, multimedia
• Access to any services (voice, video, data, etc)

• Requires high quality transmission


➢ Fourth Generation (4G): All-IP Mobile Network
- The ubiquitous wireless communications
- Transparent to all services
- Integration of multi-