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2. UMTS - Wikipedia

   en.wikipedia.org/wiki/UMTS

   The Universal Mobile Telecommunications System (UMTS) is a 3G mobile cellular system for networks based on the GSM standard. [1] UMTS uses wideband code-division multiple access radio access technology to offer greater spectral efficiency and bandwidth to mobile network operators compared to previous 2G systems like GPRS and CSD. [2]

3. Freedom of Mobile Multimedia Access - Wikipedia

   en.wikipedia.org/wiki/Freedom_of_Mobile...

   It is an implementation of the Universal Mobile Telecommunications System (UMTS) and was the world's first 3G mobile data service to commence commercial operations. A typical FOMA phone NTT DoCoMo also offers HSPA services branded FOMA High-Speed ( FOMAハイスピード ), which offers downlink speeds up to 7.2 Mbit/s and uplink speeds up to 5 ...

4. UMTS frequency bands - Wikipedia

   en.wikipedia.org/wiki/UMTS_frequency_bands

   The main UMTS bands are in bold print. Networks on UMTS-bands 1 and 8 are suitable for global roaming in ITU Regions 1, 2 (some countries) and 3. Networks on UMTS bands 2 and 4 are suitable for roaming in ITU Region 2 (Americas) only. Networks on UMTS band 5 are suitable for roaming in ITU Regions 2 and 3 (single countries).

5. Time-division multiple access - Wikipedia

   en.wikipedia.org/wiki/Time-division_multiple_access

   This is the case in both GSM and IS-136 for example. Exceptions to this include the DECT and Personal Handy-phone System (PHS) micro-cellular systems, UMTS-TDD UMTS variant, and China's TD-SCDMA, which use time-division duplexing, where different time slots are allocated for the base station and handsets on the same frequency.

6. Universal integrated circuit card - Wikipedia

   en.wikipedia.org/wiki/Universal_integrated...

   A UICC may contain several applications, making it possible for the same smart card to give access to both GSM and UMTS networks, and also provide storage of a phone book and other applications. It is also possible to access a GSM network using a USIM application and it is possible to access UMTS networks using a SIM application with mobile ...

7. UMTS channels - Wikipedia

   en.wikipedia.org/wiki/UMTS_channels

   5.3.1.1.1 [4] 3_LOGICAL DTCH: dedicated traffic channel A point-to-point dedicated channel for transmitting user traffic information between a UE and the network. UL/DL 5.3.1.1.1 [4] 3_LOGICAL PCCH: paging control channel Transfers paging information. Used when the network does not know the location cell of the UE or the UE is in sleep mode. DL ...

8. UMTS Terrestrial Radio Access Network - Wikipedia

   en.wikipedia.org/wiki/UMTS_Terrestrial_Radio...

   UMTS Terrestrial Radio Access Network (UTRAN) is a collective term for the network and equipment that connects mobile handsets to the public telephone network or the Internet. It contains the base stations, which are called Node B 's and Radio Network Controllers (RNCs) [ 1 ] which make up the Universal Mobile Telecommunications System (UMTS ...

9. List of UMTS networks - Wikipedia

   en.wikipedia.org/wiki/List_of_UMTS_networks

   For technical details on UMTS and a list of its designated operating frequencies, bands, and their common names, see UMTS frequency bands. Networks on the global UMTS-bands 1 and 8 are suitable for global roaming in ITU Regions 1, 2 (some countries) and 3. Networks on UMTS-bands 2 and 4 allow roaming in ITU Region 2 (Americas) only.