The Universal Mobile Telecommunications System (UMTS)

Résumé du document

UMTS (Universal Mobile Telecommunications Service) is a third-generation (3G) broadband, packet-based transmission of text, digitized voice, video, and multimedia at data rating up to 2 megabits per second (Mbps). UMTS offers a consistent set of services to mobile computer and phone users, no matter where they are located in the world.

Extraits

[...] They are in particular plays in network, virtual casinos, music on demand or the electronic surveillance. All these applications could appear as classic applications but with its characteristics UMTS improve the data transfer time and here is the difference with classic mobiles. We can also talk about new mobile applications like the videoconference, the m-commerce, the multimedia messaging service or positioning related to a system GPS in complement. These applications are mainly aimed by the customers and that's why we will focus ourselves on these main applications. [...]

[...] When a user phones while walking, his communication is relieved by several basic stations. This is “handover”. All these technical constraints necessitate long test phases which explain the late launching of 3G in France. The Japanese have the 3G networks since 2001 and are dreaming about the 4G with until 100 Mbit/s debits. BTS: Base Transceiver Station (in charge of the radio connection with mobile stations) BSC: Base Station Controller (commands several BTS) RNC: Radio Network Controller (allocates radio resources, localizes) GSM: Global System Mobile Communication RNC: radio network controller (allocate resources to the radios) Node: distribution point, connection point ISDN: Integrated Services Digital Network II- Advantages and disadvantages In this part we will talk about the advantages and the disadvantages about UMTS technology. [...]

[...] Ericsson and Nokia gained many markets in the sector of networks 3G because their solutions are spread out. They are able to propose reductions to their customers that already have one of their networks of the second generation. This promotion offer makes them gain more markets and customers and this make the substitute from second to third generation easier Many mobile operators hand over to their consumers its technology. So, more than 30 operators offer their service in Asia, Europe and Middle East. [...]

[...] All mobile operators use radio waves to transmit vocal communications and data. But the radio spectre is coveted: it's shared between TV, the radio, the Wi-Fi, the army, and so on. GSM mobiles function on a band of 900 or MHz frequency and a 200 kHz width. It's too low for high debit. In order to further transit data, 3GPP (3rd Generation Partnership Project) association, which gathers the main telecommunication actors has decided to allow to the UMTS a 5 MHz width, near to 2 GHz for the radio spectre. [...]

[...] Marc Taieb confirms the strong potential of mass marketing signs. “These groups have a strong mark and know the terminals. Two important assets for a virtual operator. About fifteen French MVNO currently on the market will not survive all. But the great distribution should belong to the survivors.” Application and future application The principal stake of the use of UMTS will be the convergence between the mobile and Internet. So the goal of the UMTS is to offer an effective access to information and to thus meet the needs for mobility of the users. [...]