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GSM frequency bands There are fourteen bands defined in 3GPP TS 45.005, which succeeded 3GPP TS 05.05: System Band Uplink (MHz) Downlink (MHz) Channel number T-GSM-380 380 380.2389.8 390.2399.8 dynamic T-GSM-410 410 410.2419.8 420.2429.8 dynamic GSM-450 450 450.4457.6 460.4467.6 259293 GSM-480 480 478.8486.0 488.8496.0 306340 GSM-710 710 698.0716.0 728.0746.0 dynamic GSM-750 750 747.0762.0 777.0792.0 438511 T-GSM-810 810 806.0821.0 851.0866.0 dynamic GSM-850 850 824.0849.0 869.0894.0 128251 P-GSM-900 900 890.2914.8 935.2959.8 1124 E-GSM-900 900 880.0914.8 925.0959.8 9751023, 0-124 R-GSM-900 900 876.0914.8 921.0959.8 9551023, 0-124 T-GSM-900 900 870.4876.0 915.4921.0 dynamic DCS-1800 1800 1710.21784.8 1805.21879.8 512885 PCS-1900 1900 1850.01910.0 1930.01990.0 512810 Note: The table shows the extents of each band and not its center frequency. P-GSM, Standard or Primary GSM-900 Band E-GSM, Extended GSM-900 Band (includes Standard GSM-900 band) R-GSM, Railways GSM-900 Band (includes Standard and Extended GSM-900 band) T-GSM, TETRA-GSM GSM-900, GSM-1800 and EGSM-900 GSM-900 and GSM-1800 are used in most parts of the world: Europe, Middle East, Africa, Oceania and most of Asia. In South and Central America the following countries use the following: Costa Rica - GSM-1800 Brazil - GSM-850, 900 and 1800 Guatemala - GSM-850, GSM-900 and 1900 El Salvador - GSM-850, GSM-900 and 1900 GSM-900 uses 890915 MHz to send information from the mobile station to the base station (uplink) and 935960 MHz for the other direction (downlink), providing 124 RF channels (channel numbers 1 to 124) spaced at 200 kHz. Duplex spacing of 45 MHz is used. Guard bands 100 kHz wide are placed at either end of the range of frequencies. E-GSM In some countries the GSM-900 band has been extended to cover a larger frequency range. This 'extended GSM', E-GSM, uses 880915 MHz (uplink) and 925960 MHz (downlink), adding 50 channels (channel numbers 975 to 1023 and 0) to the original GSM-900 band. The GSM specifications also describe 'railways GSM', GSM-R, which uses 876915 MHz (uplink) and 921960 MHz (downlink). Channel numbers 955 to 1023. GSM-R provides additional channels and specialized services for use by railway personnel. Phones described as having "EGSM" or "EGSM 900" support both the original GSM 900 band and the extended band. Older phones with "GSM 900" may not support EGSM. Most newer phones with "GSM 900" do support EGSM, it is just not listed that way since it is assumed that newer phones support it. All these variants are included in the GSM-900 specification. GSM-1800 GSM-1800 uses 17101785 MHz to send information from the mobile station to the base tranceiver station (uplink) and 18051880 MHz for the other direction (downlink), providing 374 channels (channel numbers 512 to 885). Duplex spacing is 95 MHz. GSM-1800 is also called DCS (Digital Cellular Service) in the United Kingdom, while being called PCS in Hong Kong (not to mix up with GSM-1900 which is commonly called PCS in the rest of the world.) GSM-850 and GSM-1900 GSM-850 and GSM-1900 are used in the United States, Canada, and many other countries in the Americas. GSM-850 uses 824849 MHz to send information from the mobile station to the base station (uplink) and 869894 MHz for the other direction (downlink). Channel numbers are 128 to 251. GSM-850 is also sometimes called GSM-800 because this frequency range was known as the "800 MHz band" (for simplification) when it was first allocated for AMPS in the United States in 1983. The term Cellular is sometimes used to describe the 850 MHz band, because the original analog cellular mobile communication system was allocated in this spectrum. GSM-1900 uses 18501910 MHz to send information from the mobile station to the base station (uplink) and 19301990 MHz for the other direction (downlink). Channel numbers are 512 to 810. PCS is the original name in North America for the 1900 MHz band. It is an initialism for Personal Communications Service. GSM-450 Another less common GSM version is GSM-450. It uses the same band as, and can co-exist with, old analog NMT systems. NMT is a first generation (1G) mobile phone system which was primarily used in Nordic countries, Benelux, Alpine Countries, Eastern Europe and Russia prior to the introduction of GSM. It operates in either 450.4457.6 MHz paired with 460.4467.6 MHz (channel numbers 259 to 293), or 478.8486 MHz paired with 488.8496 MHz (channel numbers 306 to 340). GSM Association claims one of its around 680 operator-members has a license to operate a GSM 450 network in Tanzania. However, currently all active public operators in Tanzania use GSM 900/1800 MHz. Overall, where the 450 MHz NMT band exists, it either still runs NMT, or its been replaced by CDMA. GSM-450 is a provision, it has not seen commercial deployment. GSM frequency usage in the Americas In North America, GSM operates on the primary mobile communication bands 850 MHz and 1900 MHz. In Canada, GSM-1900 is the primary band used in urban areas with 850 as a backup, and GSM-850 being the primary rural band. In the United States, regulatory requirements determine which area can use which band. GSM-1900 and GSM-850 are also used in most of South and Central America, and both Ecuador and Panama use GSM-850 exclusively(Note: Since November 2008, Panama starts to have an operator running 1900 service). Venezuela and Brazil use GSM-850 and GSM-900/1800 mixing the European and American bands. Some countries in the Americas use GSM-900 or GSM-1800, some others use 3, GSM-850/900/1900, GSM-850/1800/1900, GSM-900/1800/1900 or GSM-850/900/1800. Soon some countries will use GSM-850/900/1800/1900 MHZ like the Dominican Republic, Trinidad & Tobago and Venezuela. In Brazil, the 1900 MHz band is paired with 2100 MHz to form the IMT-compliant 2100 MHz band for 3G services. The result is a mixture of usage in the Americas that requires travelers to confirm that the phones they have are compatible with the band of the networks at their destinations. Frequency compatibility problems can be avoided through the use of multi-band (tri-band or, especially, quad-band), phones. Some countries in the Americas that use GSM-1900: Antigua Argentina Bahamas Barbados Belize Bermuda British Virgin Islands Bolivia Canada Chile Colombia Dominican Republic El Salvador Honduras Guatemala Jamaica Mexico Nicaragua Paraguay Peru Puerto Rico Trinidad and Tobago United States Uruguay U.S. Virgin Islands Some countries in the Americas that use GSM-850: Anguilla Antigua Argentina Bolivia Brazil Canada Colombia Dominican Republic Ecuador El Salvador Grenada Guatemala Haiti Honduras Montserrat Nicaragua Panama Paraguay Peru Trinidad & Tobago United States Uruguay Turks and Caicos Islands Venezuela Some countries in the Americas that use GSM-900: Antigua Barbados Brazil British Virgin Islands Cuba Dominican Republic El Salvador Falkland Islands French Guiana Grenada Guatemala Jamaica St. Pierre and Miquelon Islands Suriname Venezuela Some countries in the Americas that use GSM-1800: Barbados Brazil Dominican Republic Costa Rica Grenada Jamaica Paraguay Trinidad & Tobago Uruguay These lists are not exhaustive. GSM frequency usage in Europe In Europe most providers use 900 MHz and 1800 MHz bands. GSM-900 is most widely used. Fewer operators use DCS-1800 and GSM-1800. A dual-band 900/1800 phone is required to be compatible with almost all operators. At least GSM-900 band must be supported to be compatible with many operators. Some countries in Europe that use GSM-900 and GSM-1800: Austria Belgium Bulgaria Cyprus Czech Republic Denmark Estonia Finland France Germany Greece Hungary Ireland Italy Latvia Liechtenstein Lithuania Luxembourg Malta Monaco Netherlands Norway Poland Portugal Romania Slovakia Slovenia Spain Sweden Turkey Ukraine United Kingdom GSM frequency usage in the Middle East In the Middle East most providers use 900 MHz and 1800 MHz bands. GSM-900 is most widely used. Fewer operators use DCS-1800 and GSM-1800. A dual-band 900/1800 phone is required to be compatible with almost all operators. At least GSM-900 band must be supported to be compatible with many operators. Some countries in the Middle East that use GSM-900: Israel Algeria Libya Saudi Arabia Sudan Lebanon Iran Some countries in the Middle East that use GSM-1800: Israel Algeria Libya Saudi Arabia Sudan Iran Multi-band and multi-mode phones Today, most telephones support multiple bands as used in different countries to facilitate roaming. These are typically referred to as multi-band phones. Dual-band phones can cover GSM networks in pairs such as 900 and 1800 MHz frequencies (Europe, Asia, Australia and Brazil) or 850 and 1900 (North America and Brazil). European tri-band phones typically cover the 900, 1800 and 1900 bands giving good coverage in Europe and allowing limited use in North America, while North American tri-band phones utilize 850, 1800 and 1900 for widespread North American service but limited worldwide use. A new addition has been the quad-band phone, also known as a world phone, supporting all four major GSM bands, allowing for global use (excluding non-GSM countries such as Japan). There are also multi-mode phones which can operate on GSM as well as on other mobile phone systems using other technical standards or proprietary technologies. Often these phones use multiple frequency bands as well. For example, one version of the Nokia 6340i GAIT phone sold in North America can operate on GSM-1900, GSM-850 and legacy TDMA-1900, TDMA-800, and AMPS-800, making it both multi-mode and multi-band. A more current example of a multi-mode/multi-band device are the Apple Inc. iPhone and the Google Nexus One. Both can be considered to have at least 4 modes; GSM, UMTS, Wi-Fi & Bluetooth (more if you include the GPS both have, and the FM radio capabilities of the Nexus One). Both devices support quad-band GSM (850/900/1800/1900MHz), tri-band UMTS (I/II/V or 2100/1900/850MHz on iPhone, I/IV/VIII or 2100/1700/900MHz on Nexus One), single-band WiFi (2.4GHz) and single-band Bluetooth (2.4GHz). Note that while the Nexus One, like many other devices on the market, may also become available in a UMTS I/II/IV or 2100/1900/850MHz combo, it would still be considered tri-band UMTS, not quint-band, as the hardware is limited to supporting any 3 bands at one time. Further, as HSPA runs atop UMTS, it would not be considered a "mode" by strict definition. See also 3GPP Cellular frequencies OD-GPS Roaming UMTS frequency bands 700 MHz wireless spectrum auction References ^ Rappaport, Theodore S., Wireless Communications: Principles and Practices, 2nd Ed. Upper Saddle River, NJ: Prentice Hall, 2002. p. 554. ^ OFTA of HK, Office of the Telecommunications Authority ^ Ericsson, Nokia Eye 450 MHz GSM technology ^ "Nexus One for AT&T's 3G bands likely in the works". Engadget. 2010. http://www.engadget.com/2010/01/29/nexus-one-for-atandts-3g-bands-likely-in-the-works/. External links GSM Coverage Maps and Roaming Information GSM World's listing of countries, frequencies, and roaming agreements. coveragemaps.com - Publications - Current Coverage Maps Charts of GSM/3GSM coverage and frequency usage for the world, Europe, Asia and the Americas LDpost.com - History of GSM and More GSM history, technology, bands, multi-band phones 3GPP Specification detail TS 05.05 Specification 3GPP TS 05.05 Radio Transmission and Reception 3GPP Specification detail TS 45.005 Specification 3GPP TS 45.005 Radio Transmission and Reception 3GPP Specifications for group: R4 - Frequencies info for UMTS (TS 25.101/102/104/105) Categories: Bandplans Global System for Mobile communications I am an expert from electronicswholesalesupplier.com, while we provides the quality product, such as MP3 Bluetooth Watch Manufacturer , China Mobile DVR, Automobile Detailing Products,and more.
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