Mobile Communication: Mobile Networks Tutorial

Mobile Communication: Mobile Networks Tutorial:   

Introduction :-  

The wireless industry has grown dramatically in the past 10 years, surpassing the number of wireline subscribers since 2001.Subscribers are giving additional value to mobile phones devices which have become much more than just for communication, with the adoption of 3G technology, mobiles are now multimedia devices delivering a variety of applications including music, games, video, internet, and e-mail among others.

       In addition, the wireless industry is expected to have a sustainable growth in the next 4 years, where the compound annual growth rate from 2005 to 2010 is estimated at 10.3%. The drivers for this growth differ from each network, but they can be
categorized in the three following areas:

•    Service coverage, several countries still have a low penetration rate and their investment priority is to expand their network and offer mobile services to more users.

•    Quality of service, countries that have several competing mobile operators have gone from quantitative to qualitative where quality of service is their priority in order to gain market share.

•  Network upgrades and new applications, countries that have reach coverage and service quality are expanding the applications to users including services such as location, gaming, music, and video.

1. Wireless communications have evolved from analog (AMPS) to digital (TDMA and CDMA).

     2.The technology that is dominating the market is GSM (2G) with 80% of the global subscribers.

1. The wireless technology evolution is taking place to provide additional bandwidth to users and enable the additional data applications that users are demanding. For this, 2G networks are evolving into 2.5G or 3G technologies such as WCDMA and CDMA2000.

   2. The main standardization groups that have defining the recommendations for     wireless in order to achieve interoperability are the 3rd Generation Partnership Project (3GPP), the European Telecommunications Standards Institute (ETSI) and International Telecommunications Union (ITU).