UMTS (Universal Mobile Telecommunications System)

UMTS (Universal Mobile Telecommunications System) is a so-called "third-generation (3G),"broadband , packet -based transmission of text, digitized voice, video, and multimedia at data rates up to and possibly higher than 2 megabits per second ( Mbps ), offering a consistent set of services to mobile computer and phone users no matter where they are located in the world. Based on the Global System for Mobile ( GSM ) communication standard, UMTS, endorsed by major standards bodies and manufacturers, is the planned standard for mobile users around the world by 2002. Once UMTS is fully implemented, computer and phone users can be constantly attached to the Internet as they travel and, as they roaming service , have the same set of capabilities no matter where they travel to. Users will have access through a combination of terrestrial wireless and satellitetransmissions. Until UMTS is fully implemented, users can have multi-mode devices that switch to the currently available technology (such as GSM 900 and 1800) where UMTS is not yet available.
Today's cellular telephone systems are mainly circuit-switched , with connections always dependent on circuit availability. packet-switched connection, using the Internet Protocol (IP ), means that a virtual connection is always available to any other end point in the network. It will also make it possible to provide new services, such as alternative billing methods (pay-per-bit, pay-per-session, flat rate, asymmetric bandwidth, and others). The higher bandwidth of UMTS also promises new services, such as video conferencing. UMTS promises to realize the Virtual Home Environment ( VHE ) in which a roaming user can have the same services to which the user is accustomed when at home or in the office, through a combination of transparent terrestrial and satellite connections.
Trials of UMTS technology, using advanced mobile phone/computing device prototypes, are currently being conducted by Nortel Networks and BT (British Telecommunications).
The electromagnetic radiation spectrum for UMTS has been identified as frequency bands 1885-2025 MHz for future IMT-2000 systems, and 1980-2010 MHz and 2170-2200 MHz for the satellite portion of UMTS systems.

Comments

Post a Comment

Popular posts from this blog

Brief History of Magars in Nepal(with 1st Boxer of Nepal Dal Bdr Rana from Arkhale,Gulmi)

Image
Origin Genetically and physically, Magar people are Mongoloid/east Asian. They are believed to have migrated from Tibet like the Gurungs and other prominent ethnic groups, however, there is an interesting mythical story describing Magar's origins and versions of three different language groups are presented. The Magar of the Bara Magaranth (a group of twelve Magar kingdoms east of the Gandaki River) are said to have originated in the land of Seem. Two brothers, See Magar and Chintoo Magar, fought, and one remained in Seem, while the other left, ending up in Kangwachen in southern Sikkim. The Bhutia people lived at the northern end of this region. Over time, the Magars became very powerful and made the northern Bhutia their vassals. Sintoo Sati Sheng ruled in a very despotic manner, and the Bhutia conspired to assassinate him. Sheng's queen took revenge and poisoned 1,000 Bhutia people at a place now called Tong Song Fong, meaning "where a thousand were murdered&
Read more >>

Qualities of Confident Person

Image
They don't show off They can say no without any explanation Reacts same for a compliment and criticism Least bothered about what others think Emotionally balanced They are not afraid to take any challenge Thinks about solution rather than the problem Ready to take calculated risks They don't fight for rights, they know how to get them. Usually they are not tensed, because they know how to get the things done. They feel less insecurity They don't compare with others They know there is a solution for every problem They stand straight They are not gossip- mongers. They accept their mistakes and correct it. They don't say. They “speak”. They love to speak in the crowd. Smile when look at to new people They can deal any situation They treat Janitors and rich same way Finally they know life is brief, don't waste time on things which are not worthwhile
Read more >>