TIA Standardizes Removable User Identity Modules
September 14, 2005
The Telecommunications Industry Association (TIA) published a standard, TIA-820-A-2 - Removable User Identity Module for Spread Spectrum Systems - Release A, Addendum 2. The document is an addendum to TIA-820-A.
This standard contains the requirements for the removable user identity module (R-UIM). It is an extension of the subscriber identity module (SIM), per GSM 11.11 - Digital Cellular Telecommunications System (Phase 2); Specification of the 3 Volt Subscriber Identity Module Mobile Equipment (SIM-ME) Interface capabilities to enable operation in a reserved radio-telephone environment based on:
- TIA/EIA-41-D-1 - Cellular Radio Telecommunications Intersystem Operations
- TIA/EIA/IS-91-A - Base Station - Mobile Station Compatibility Specification for 800 MHz Cellular, Auxiliary and Residential Services ([11/14/15]).
Examples of this environment include, but are not limited to, analog, [11,14]-based Code Division Multiple Access (CDMA) and the TIA-2000-1-A - Introduction to cdma2000 Spread Spectrum Systems, June 2000 family of standards.
The requirements of TIA-820-A-2 are expressed as additions to the current specification of the SIM. The composite R-UIM is comprised of the current SIM specification and this ancillary or "delta" document. The SIM specification is included as a reference and it is intended that all upgrades to the SIM specification will also apply to the R-UIM.
The current SIM specifications address the physical and electrical characteristics of the removable module, along with the user-to-card interface and terminal-to-card signaling protocol. Operation in an [11/14/15] environment requires that additional commands and responses be developed within the context of this document. This standard also defines new elementary files for storage of parameters that are added for operation in an [11/14/15] environment.
TIA-820-A-2 specifies security-related procedures and commands, along with data and information storage items that permit basic operation in the [11/14/15] environment. Later versions are expected to also address the delivery of [11/14/15] user features and services via the R-UIM.
Although the focus of this document is compatibility with [11/14/15], the scope of this document may be expanded later to include compatibility with other -related technologies such as Time Division Multiple Access (TDMA) and Advanced Mobile Phone Service (AMPS).
TIA-820-A-2 was created by TIA TR-45.5 Subcommittee on Spread Spectrum Digital Technology and was released in February 2005.