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Technology Stocks : Qualcomm Moderated Thread - please read rules before posting -- Ignore unavailable to you. Want to Upgrade?

To: rkral who wrote (36841)	9/6/2003 10:40:28 AM
From: Eric L	Read Replies (1) \| Respond to of 196538

3GPP2 GSM Phase 2+ and 3GPP2 3G Forwards and Backwards Interworking << if it's not even in the definitions, then people shouldn't be describing a new WCDMA network as backward compatible with an existing GSM mobile .. as I stated in my original post. >> They absolutely should Ron, and the definitions of forward and backward compatibility of GSM Phase 2+ and 3GSM UMTS WCDMA, are defined and dealt with and continue to be defined and dealt with in the 3GPP2 GSM/EDGE standards and the corresponding 3GPP2 3G standards and correspondence relating to them as both sets of forward and backward compatible standards sharing common protocols for services and core network components allowing full network interworking evolve concurrently out through Release 6 today and beyond in the future, through each quarterly update of both. Forwards backward compatibility was not achieved in the initially targeted December 2000 Releases, or the March 2001 Releases. It was finally achieved in the June 2001 Releases. If you spend some time on the 3GPP server and focus on that period between December 2000 and June 2001 using plenary meeting summaries or summaries of the various working groups, you will have a pretty good handle on what some of the forward backward compatibility issues were that initially caused delay in 3G network implementations. One of the issues that remains today that relates to handover is getting all carriers and vendors on the same page as it relates to IOT. In many cases GSM GPRS networks require software upgrades from the release level that they are currently operating at, to a later release or a patched release (correcting misinterpretation of that earlier release by individual vendors) in order to be able to successfully achieve handover to or from a March 2002 compliant multi-mode WCDMA terminal (early UE) and there is a great deal of focus on that right at the moment within the vendor carrier community. Best, - Eric -