BOOK_CONTENT
From Introduction to WCDMA: Physical Channels, Logical Channels, Network, and Operation

WCDMA mobile devices (also called access terminals) are data input and output devices that are used to communicate with a nearby access point. WCDMA devices include removable UMTS subscriber identity modules (USIMs) that hold service subscription information. The common types of available WCDMA devices include external radio modems, PCMCIA cards, radio modules, and dual mode mobile telephones.

UMTS Subscriber Identity Module (USIM)

A UMTS subscriber identity module (USIM) is an "information" card that contains service subscription identity and personal information. This information includes a phone number, billing identification information and a small amount of user specific data (such as feature preferences and short messages.) This information can be stored in the card rather than programming this information into the phone itself. This intelligent card, either credit card-sized (ISO format), or the size of a postage-stamp (Plug-In format), can be inserted into any UIM ready wireless device.

PCMCIA Air Cards

The PCMCIA card uses a standard physical and electrical interface that is used to connect memory and communication devices to computers, typically laptops. The physical card sizes are similar to the size of a credit card 2.126 inches (51.46 mm) by 3.37 inches (69.2 mm) long. There are 4 different card thickness dimensions: 3.3 (type 1), 5.0 (type 2), 10.5 (type 3), and 16 mm (type 4). WCDMA PCMCIA radio cards can be added to most laptop computers to avoid the need of integrating or attaching radio devices.

Embedded Radio Modules

Embedded radio modules are self contained electronic assemblies that may...

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Products & Services
PCMCIA Card Readers and Writers
PCMCIA card readers and PCMCIA card writers allow a user to transfer data from or to a host computer to or from a PCMCIA card.
PCMCIA Cards and Accessories
PCMCIA cards and accessories follow standards developed by the Personal Computer Memory Card International Association (PCMCIA), an international standards body and trade organization. PCMCIA cards, or PC cards as they are commonly known, were designed originally for adding memory to portable computers, but are now used in a variety of devices.
PCMCIA Bus Interface Cards
PCMCIA bus interface cards translate the data from the PCMCIA bus to another bus, and vice versa. They are used to connect two otherwise incompatible buses.
PCMCIA Modems and PCMCIA Fax Modems
PCMCIA modems and PCMCIA fax modems enable computers to transmit data over telephone lines. They include modem-only devices, modem and fax combinations, and fax/modem products with networking capabilities.
PCMCIA Hard Drive Cards
PCMCIA hard drive cards provide high storage capacities for notebook and palmtop computers, personal digital assistants (PDAs), mobile systems, and PCMIA-equipped computers.

Topics of Interest

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CDMA mobile devices are data input and output devices that are used to communicate with a nearby Base Station. CDMA devices may or may not include removable user identity modules (UIMs) that hold...

EVDO devices (also called access terminals) are data input and output devices that are used to communicate with a nearby access point. EVDO devices may or may not include removable user identity...

GSM mobile devices (also called mobile stations) are voice and/or data input and output devices that are used to communicate with a radio towers (cell sites). GSM end user devices include removable...

Overview The WCDMA system includes a Base Stations (BS), various data processing functions, and a data distribution network. The WCDMA network is also called a radio access network (RAN). WCDMA...