Telecom Resources - 3G / UMTS
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Home Telecommunications GSM CDMA 3G SS7 IN Messaging GPRS MVNO Referrals Guestbook	SS7, GSM, CDMA, 3G, IN Information     3G & UMTS     3G is a short term for third-generation wireless, and refers to near-future developments in personal and business wireless technology, especially mobile communications. This phase is expected to reach maturity between the years 2003 and 2005.     The third generation, as its name suggests, follows the first generation (1G) and second generation (2G) in wireless communications. The 1G period began in the late 1970s and lasted through the 1980s. These systems featured the first true mobile phone systems, known at first as "cellular mobile radio telephone." These networks used analogue voice signalling, and were little more sophisticated than repeater networks used by amateur radio operators. The 2G phase began in the 1990s, and much of this technology is still in use. The 2G cell phone features digital voice encoding. Examples include CDMA, TDMA, and GSM. Since its inception, 2G technology has steadily improved, with increased bandwidth, packet routing, and the introduction of multimedia. The present state of mobile wireless communications is often called 2.5G.     Ultimately, 3G is expected to include capabilities and features such as:     ·         Enhanced multimedia (voice, data, video, and remote control)     ·         Usability on all popular modes (cellular telephone, e-mail, paging, fax, videoconferencing, and Web browsing)     ·         Broad bandwidth and high speed (upwards of 2 Mbps)     ·         Routing flexibility (repeater, satellite, LAN)     ·         Operation at approximately 2 GHz transmit and receive frequencies     ·         Roaming capability throughout Europe, Japan, and North America     While 3G is generally considered applicable mainly to mobile wireless, it is also relevant to fixed wireless and portable wireless. The ultimate 3G system might be operational from any location on, or over, the earth's surface, including use in or by:     ·         Homes     ·         Businesses     ·         Government offices     ·         Medical establishments     ·         The military     ·         Personal and commercial land vehicles     ·         Private and commercial watercraft and marine craft     ·         Private and commercial aircraft (except where passenger use restrictions apply)     ·         Portable (pedestrians, hikers, cyclists, campers)     ·         Space stations and spacecraft     Proponents of 3G technology promise that it will "keep people connected at all times and in all places." Researchers, engineers, and marketeers are faced with the challenge of accurately predicting how much technology consumers will actually be willing to pay for. (Recent trends suggest that people sometimes prefer to be disconnected, especially when on vacation.) Another concern involves privacy and security issues. As technology becomes more sophisticated and bandwidth increases, systems become increasingly vulnerable to attack by malicious hackers (known as crackers) unless countermeasures are implemented to protect against such activity.     One can hardly doubt, in any event, that 3G technology will provide plenty of jobs for talented engineers, programmers, and sales people, as well as widespread opportunities for entrepreneurs interested in wireless communications. UMTS is the European standard for 3G mobile communication systems which provide an enhanced range of multimedia services. It has evolved from its basic format through developments such as HSDPA (High Speed Downlink Packet Access) and HSUPA (High Speed Uplink Packet Access) to provide very high bandwidth capabilities to support the next generation of telecommunication services. 3G/UMTS  Resources: 3GPP Home Page Overview of UMTS NMS 3G Tutorial WCDMA 3G Portal UMTS Resources IEC : Billing in a 3G Environment 3G and CDMA CDG: 3G Resources UMTS Forum home Telecom tutorials and resources Telecom Discussion forum NEW ON THIS SITE: MVNO:  is a GSM phenomenon where an operator or company which does not own a licenced  sprectrum and generally with own networking infrastructure. Instead MVNOs resell wireless services under their brand name,  using a  regular telecom operator's network with which they have a business arrangements. Usually they they buy minutes of  use (MOU) from the licenced telecom operator and then resell minutes of usage to their customers of MVNO. Currently MVNOs are  emerging in fast pace in European markets and beginning in USA also. Slowly MVNO phenomenon catching up in Asia and other  parts of the world also. READ MORE HERE
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