GSM (2)

• Ability to access customized information based upon location
• Ability to store information such as addresses and credit card numbers within personal profiles
• Ability to facilitate mobile online shopping
• Full mobility on the Internet
• Ability to provide business users with access to intranets

The technologies in the 2.5G space include the following:

• GPRS (General Packet Radio Services). Enables true “always-on” capability in the wireless network. Typically, in today’s cell network, a phone call must be initiated to connect to a network, similarly to a modem dialing for service to an Internet service provider. By the same token, “always-on” can be compared with broadband-wired connections such as DSL (Digital Subscriber Line) or T1 lines and faster connections. However, GPRS only enables speeds in the range of 115 Kbps.
• EDGE (Enhanced Data Rate for GSM Evolution). Quite simply defined as a faster version of the GSM wireless service. EDGE technology enables data to be delivered at rates up to 384 Kbps on broadband connections. The standard is based on the GSM standard and uses TDMA multiplexing technology. In essence, the EDGE may enable higher functionality such as the downloading of music and videos over mobile devices.
• CDMA 2000 (Code Division Multiple Access 2000). The CDMA 2000 service is essentially a migration or upgrade of the CDMA standard discussed in the second generation section. CDMA 2000 is also an “always-on” technology that offers transmission speeds around 100 Kbps.

The next section turns to a discussion on the next generation of wireless, called 3G, or third generation, wireless.

Taken From : Enterprise Guide to Gaining Business Value from Mobile Technologies

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