In early 1998, to expedite the process of IMT2000/3G standardization and the global acceptance of proposed radio transmission technologies, a concept of a “Partnership Project” was proposed by the European elecommunications Standards Institute (ETSI). This proposal initiated two Third-Generation Partnership Projects (3GPP and 3GPP2) with two different, but related areas of focus.
Each of the 3GPP and 3GPP2 projects involves a number of regional standardization bodies as organizational partners. For 3GPP the original scope was to produce globally applicable and acceptable technical specifications for a Third-Generation Mobile System based on the evolved GSM networks. This scope was subsequently amended to include the maintenance and development of Technical Specifications for GSM and its evolution to General Packet Radio Service (GPRS) and Enhanced Data rates for GSM Evolution (EDGE).
Similarly, the scope of the 3GPP2 work was to harmonize different variations of cdma2000 in a single family of standards. This scope was also expanded to include the development of a data-optimized air interface called the high-rate packet data (HRPD) system. In the development of cdma2000 systems the core network specifications are based on an evolved ANSI-41 and IP network; however, the specifications also include the necessary capabilities for operation with an evolved GSM-MAP-based core network.
As a result of harmonization efforts in 3GPP and 3GPP2, the following three major technologies have been identified and included in the IMT2000 family of standards: The Direct-Sequence mode is based on WCDMA specified by
3GPP (UTRA/FDD), the Multi-Carrier mode is based on cdma2000 Multi-Carrier specified by 3GPP2, and the TDD mode is based on the TDD mode specified by 3GPP (UTRA TDD).
Wideband CDMA (WCDMA) has been chosen as basic radio-access technology for UMTS/IMT-2000 in all major areas of the world. Most GSM operators are planning or have begun deploying IMT2000/UMTS based networks using WCDMA technology. Many IS136/TDMA-based networks have also joined the GSM group and have decided to migrate to WCDMA.
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Dear Student,
Your blog is developing along the lines of getting to know your subject. I like that. Your information on your first pages is very much different from the information(structure) on the latter pages. So it really shows your knowledge development. That is great. You could add some more information on the institutional environment in which the standrd grew, and I would like to get more arguments on the how and the why of the (porbable) succes of WCDMA.
Good luck for the next days, kind regards,
Jan Smits
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