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Mobile Device Glossary

GSM900

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Upload: 890–915, Download: 935–960.GSM-900 is used in most parts of the world: Europe, Middle East, Africa, Australia, Oceania (and most of Asia). GSM-900 uses 890–915 MHz to send information from the mobile station to the base station (uplink) and 935–960 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. Read More

GSM1800

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Upload: 1710–1785, Download: 1805–1880. GSM-1800 is used in most parts of the world: Europe, Middle East, Africa, Australia, Oceania (and most ofAsia). GSM-1800 uses 1710–1785 MHz to send information from the mobile station to the base transceiver station (uplink) and 1805–1880 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[3] (not to mix up with GSM-1900 which is commonly called PCS in the rest of the world.) Mobile Communication Services on Aircraft (MCA) uses GSM1800.  Read More

HSDPA

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High-Speed Downlink Packet Access (HSDPA) is an enhanced 3G (third generation) mobile telephony communications protocol in the High-Speed Packet Access (HSPA) family, also dubbed 3.5G, 3G+ or turbo 3G, which allows networks based on Universal Mobile Telecommunications System (UMTS) to have higher data transfer speeds and capacity. Current HSDPA deployments support down-link speeds of 1.8, 3.6, 7.2 and 14.4 Megabits/s. Further speed increases are available with HSPA+, which provides speeds of up to 42 Mbit/s downlink and 84 Mbit/s with Release 9 of the 3GPP standards. Read More

WCDMA900

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Upload: 880 – 915, Download: 925 – 960. Band VIII (W-CDMA 900) in Europe, Asia, Australia (Optus and Vodafone regional/country 3G networks), New Zealand (ITU Region 1 and ITU Region 3), Thailand (Advanced Info Service), Dominican Republic (Orange Dominicana) and Venezuela (Digitel GSM) Read More

GSM850

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Upload: 824–849,  Download: 869–894. GSM 850 is simply GSM technology operating in the Cellular (850 MHz or “800”) frequency band. Both the technology and frequency band have been around for many years, but not until 2002 were they combined. Used in Australia, Canada, the United States and many other countries in the Americas. Read More

GSM

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GSM (Global System for Mobile Communications, originally Groupe Spécial Mobile), is a standard set developed by the European Telecommunications Standards Institute (ETSI) to describe technologies for second generation (or “2G”) digital cellular networks. Developed as a replacement for first generation analog cellular networks, the GSM standard originally described a digital, circuit switched network optimized for full duplex voice telephony. Read More

WCDMA

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W-CDMA (Wideband Code Division Multiple Access), UMTS-FDD, UTRA-FDD, or IMT-2000 CDMA Direct Spread is an air interface standard found in 3G mobile telecommunications networks. It is the basis of Japan’s NTT DoCoMo’s FOMA service and the most-commonly used member of the UMTS family and sometimes used as a synonym for UMTS. Radio channels are 5 MHz wide. Chip rate of 3.84 MHz. Read More