GSM所有频段频点

GSM freque ncy bands1GSM freque ncy bandsGSM frequency bands or frequency ranges are the cellular frequencies designated by the ITU for the operation of GSM mobile pho nes.GSM freque ncy bandsThere are fourteen bands defi ned in 3GPP TS 45.005, which succeeded 3GPP TS 05.05:SystemBandUplink (MHz)Downlink (MHz)Channel numberT-GSM-380380380.2-389.8390.2-399.8dynamicT-GSM-410410410.2-419.8420.2-429.8dynamicGSM-450450450.4-457.6460.4-467.6259 4293GSM-480480478.8-486.0488.8-496.0306 -340GSM-710710698.0-716.0728.0-746.0dynamicGSM-750750747.0-762.0777.0-792.0438 H511T-GSM-810810806.0-821.0851.0-866.0dynamicGSM-850850824.0-849.0869.0-894.0128 4251P-GSM-900900890.2-914.8935.2-959.81 -124E-GSM-900900880.0-914.8925.2-959.8975-1023, 0-124R-GSM-900900876.0-914.8921.0-959.8955-1023, 0-124T-GSM-900900870.4-876.0915.4-921.0dynamicDCS-180018001710.2-1784.81805.2-1879.8512-885PCS-190019001850.0-1910.01930.0-1990.0512-810P-GSM, Sta ndard or Primary GSM-900 Ba ndE-GSM, Exte nded GSM-900 Ba nd (in cludes Sta ndard GSM-900 band)R-GSM, Railways GSM-900 Ba nd (in cludes Stan dard and Exte nded GSM-900 band)T-GSM, TETRA-GSMGSM-900, GSM-1800 and EGSM/EGSM-900GSM-900 and GSM-1800 are used in most parts of the world: Europe, Middle East, Africa, Australia, Oceania (and most of Asia). In South and Central America the following countries use the following:? Costa Rica - GSM-1800? Brazil - GSM-850, 900, 1800 and 1900? Guatemala - GSM-850, GSM-900 and 1900? El Salvador - GSM-850, GSM-900 and 1900GSM-900 uses 890 -915 MHz to send in formation from the mobile station to the base statio n (upli nk) and935 -960 MHz for the other directio n (dow nli nk), providi ng 124 RF cha nnels (cha nnel numbers 1 to 124) spaced at200 kHz. Duplex spac ing of 45 MHz is used. Guard bands 100 kHz wide are placed at either end of the range of freque nciesGSM freque ncy bands3GSM-1800GSM-1800 uses 1710-1785 MHz to send in formation from the mobile station to the base tran ceiver statio n (upli nk) and 1805 -1880 MHz for the other directio n (dow nli nk), providi ng 374 cha nn els (channel numbers 512 to 885). Duplex spac ing is 95 MH z. GSM-1800 is also called DCS (Digital Cellular Service) in the Un ited Kin gdom, while2bei ng called PCS in Hong Kong(not to mix up with GSM-1900 which is commo nly called PCS in the rest of the3world.) Mobile Com mun icatio n Services on Aircraft (MCA) uses GSM1800.GSM-850 and GSM-1900GSM-850 and GSM-1900 are used in Can ada, the Uni ted States and ma ny other cou ntries in the Americas.? GSM-850 uses 824-849 MHz to send in formation from the mobile statio n to the base statio n (upli nk) and 869-894 MHz for the other directio n (dow nli nk). Cha nnel numbers are 128 to 251.GSM-850 is also sometimes calledGSM-800 because this freque ncy range was known as the 800 MHz band (for simplificati on) whe n it was first allocated for AMPS in the Uni ted States in 1983.The term Cellular is sometimes used to describe the 850 MHz band, because the original analog cellular mobile com mun icati on system was allocated in this spectrum.? GSM-1900 uses 1851910 MHz to se nd in formation from the mobile station to the base statio n (upli nk) and 1930 -990 MHz for the other directio n (dow nlin k). Cha nnel numbers are 512 to 810.PCS is the origi nal n ame in North America for the 1900 MHz ban d. It is an in itialism for Pers onal Communi cati ons Service.? Note: Telstra in Australia uses the 850Mhz for its Next G network (3G)GSM-4504Ano ther less com mon GSM version is GSM-450. It uses the same band as, and can co-exist with, old an alog NMT systems. NMT is a first gen erati on (1G) mobile phone system which was primarily used in Nordic coun tries, Ben elux, Alp ine Coun tries, Easter n Europe and Russia prior to the in troducti on of GSM. It operates in either 450.4 T57.6 MHz paired with 460.4 T67.6 MHz (channel numbers 259 to 293), or 478.8 -486 MHz paired with 488.8496 MHz (cha nnel numbers 306 to 340). The GSM Association claims one of its around 680 operator-members has a lice nse to operate a GSM 450 n etwork in Tanzania. However, curre ntly all active public operators in Tan za nia use GSM 900/1800 MHz. Overall, where the 450 MHz NMT ba nd exists, it either still runs NMT, or its bee n replaced by CDMA. GSM-450 is a provisi on, it has not see n commercial deployme nt.GSM freque ncy usage across the worldThe AmericasIn North America, GSM operates on the primary mobile com mun icati on bands 850 MHz and 1900 MHz. In Can ada, GSM-1900 is the primary band used in urba n areas with 850 as a backup, and GSM-850 being the primary rural band. In the Un ited States, regulatory requireme nts determ ine which area can use which band.GSM-1900 and GSM-850 are also used in most of South and Cen tral America, and both Ecuador and Pan ama use GSM-850 exclusively (Note: Si nee November 2008, a Pan ama nian operator has begun to offer GSM-1900 service). Ven ezuela and Brazil use GSM-850 and GSM-900/1800 mixi ng the Europea n and America n ban ds. Some coun tries 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. Soo n some cou ntries will use GSM-850/900/1800/1900 MHZ like the Dominican Republic, Trini dad & Tobago and Ven ezuela.In Brazil, the 1900 MHz ba nd is paired with 2100 MHz to form the IMT-complia nt 2100 MHz ba nd 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 n etworks at their desti nati ons. Freque ncy compatibility problems can be avoided through the use of multi-ba nd (tri-ba nd or, especially, quad-ba nd), phon es.Europe, Middle East and AsiaIn Europe, Middle East and Asia most of the providers use 900 MHz and 1800 MHz ban ds. GSM-900 is most widely used. Fewer operators use DCS-1800 and GSM-1800. A dual-ba nd 900/1800 pho ne is required to be compatible with almost all operators. At least the GSM-900 band must be supported in order to be compatible with many operators.Multi-ba nd and multi-mode phonesToday, most teleph ones support multiple bands as used in differe nt coun tries to facilitate roam ing. These are typically referred to as multi-ba nd phon es. Dual-ba nd phones can cover GSM n etworks in pairs such as 900 and 1800 MHz freque ncies (Europe, Asia, Australia and Brazil) or 850 and 1900 (North America and Brazil). European tri-ba nd phones typically cover the 900, 1800 and 1900 bands givi ng good coverage in Europe and allow ing limited use in North America, while North America n tri-ba nd phones utilize 850, 1800 and 1900 for widespread North America n service but limited worldwide use. A new additi on has bee n the quad-ba nd phone, also known as a world phone, support ing all four major GSM ban ds, allow ing for global use (excludi ng non-GSM coun tries such as Japa n).There are also multi-mode phones which can operate on GSM as well as on other mobile phone systems using other tech ni cal sta ndards or proprietary tech no logies. Often these phones use multiple freque ncy 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, maki ng it both multi-mode and multi-ba nd.Note that while the Nexus On e, like many other devices on the market, may also become available in a UMTS 1/II/IV or 2100/1900/850MHz combo, 5 it would still be considered tri-band UMTS, not quad-band, as the hardware is limited to support ing any 3 bands at one time. Further, as HSPA runs atop UMTS, it would not be con sidered a mode by strict defi niti on.See also? 3GPP? Cellular frequencies? OD-GPS? Roaming? UMTS frequency bands? United States 2008 wireless spectrum auctionGSM freque ncy bands4Refere nces1 Rappaport, Theodore S., Wireless Communications: Principles and Practices, 2nd Ed. Upper Saddle River, NJ: Prentice Hall, 2002. p. 554.2 OFTA of HK, Office of the Telecommunications Authority (http:/ /www. ofta.gov.hk/en/ad-comm/tsac/tsacpaperhtml)3 http:europa.eu/rapid/pressReleasesActiortio?reference=MEM0/08/220&format=HTML& aged=1 &language=EN&guiLanguage=en4 Ericsson, Nokia Eye 450 MHz GSM technology (http:/www. 5 Nexus One for AT&Ts 3G bands likely in the works (http:/www. engadgetcom/2010/01/29/ nexus-one-for-atandts-3g-bands-likely-in-the-works/. Engadget. 2010.Exter nal li nks? GSM Coverage Maps and Roaming Information (http:/www. GSM Worlds listi ng of coun tries, freque ncies, and roam ing agreeme nts.? - Publications - Current Coverage Maps (httpwww. coveragemapscom/gsmposterhtm) Charts of GSM/3GSM coverage and freque ncy usage for the world, Europe, Asia and the Americas? LD - History of GSM and More (http:/www. History-of-GSM-a nd-More. html) GSM history, tech nology, ban ds, multi-ba nd pho nes? 3GPP Specification detail TS 05.05 (http:Zwww.3gpp.org/ftp/Specs/ntml-info/0505.htm) Specification 3GPP TS 05.05 Radio Tran smissio n and Reception? 3GPP Specification detail TS 45.005 (http:/www. 3gpp.org/ftp/ Specshtml-info/ 45005.htm) Specification 3GPP TS 45.005 Radio Tran smissio n and Reception? 3GPP Specifications for group: R4 (http:/www. 3gpp.org/ftp/ Specshtml-info/TSG-WG-R4.htm)-Freque ncies info for UMTS (TS 25.101/102/104/105)Article Sources and Con tributors5Article Sources and Con tributorsGSM freque ncy ban ds Source http:/e n. wikipedia.org/w/i ndex.php?oldid=406281515 Con tributors: Aldaro n, Amakader, An dros 1337, Arma ndo82, Arteitle, BBCWatcher, Bachrach44,Bela nd, Blkballo on925, Bwilk ins, Bwooce, Cassam ine, ChrisHarris, ChrisUK, Chrisbolt, Coli n Douglas Howell, Con dem, Daydalaus, Desheri nka, DrDeke, Enenn, Enq uire, Eurolite x3, GJDR, Gaminr ey, Githi n, GoLLoMboje, Gorde on bleu, Guettarda, Gyrferret, Hamiltha, Improtas, I nsta ntno od, Iwfi, Jareha, Jida nni, Jim.he nders on, Joh nTech no logist, Keres, Komiksulo, Kozuch,Kragen, LMB, Maksdo, Martin451, Melchoir, Minerale , Moogle10000, Muhandes, Myscrnnm, Naddy, Nisselua, Nopetro, Notmicro, Omicronpersei8, Onorem, Otsego, Pan Camel, Patcat88,Peeperma n, Pmbarros, Puelly, Pun eetsohi1984, Quercus basaseachice nsis, Radioj on, Rama, RobNich, Sam Hocevar, San der123, Saxphile, Sciuri n?, Shan es, Sidon uke, Sloopjkb, Sni ckerdo, Starionwolf, Stephan Leeds, Stevage, Towel401, VCA, Verkhovensky, Vilpan, Yapkhs, ZorroIII,?05,水水,218 anonymous editsLice nseCreative Commons Attribution-Share Alike 3.0 Unportedhttp:/ /creativecommons. org/ licenses/by-sa/ 3.0/