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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. List of commercial video games released as freeware

    en.wikipedia.org/wiki/List_of_commercial_video...

    The game is still mentioned as freeware and many forums and sites have the now dead link to the game page. The legal situation now is unclear because the installer has no disclaimer. Area 51 (2005), a first person shooter by Midway Games. Its free release was sponsored by the US Air Force. It later changed hands and its freeware status was removed.

  4. 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 ...

  5. 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).

  6. High Speed Packet Access - Wikipedia

    en.wikipedia.org/wiki/High_Speed_Packet_Access

    High Speed Packet Access (HSPA) [1] is an amalgamation of two mobile protocols—High Speed Downlink Packet Access (HSDPA) and High Speed Uplink Packet Access (HSUPA)—that extends and improves the performance of existing 3G mobile telecommunication networks using the WCDMA protocols.

  7. Discover the best free online games at AOL.com - Play board, card, casino, puzzle and many more online games while chatting with others in real-time.

  8. 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.

  9. 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 ...