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


To: tradeyourstocks who wrote (15324)9/28/2001 12:13:35 PM
From: foundation  Read Replies (1) | Respond to of 197228
 
"b" version -----

KDDI presently provides services with cdma 95B, which provides 64kbs max.

95A - 14kbs max - what we have in the US

95B - 64kbs max - what KDDI has, what Korean carriers had prior to 1x upgrades...

1x - etc.



To: tradeyourstocks who wrote (15324)9/28/2001 1:01:24 PM
From: Eric L  Read Replies (1) | Respond to of 197228
 
microe,

<< Anyone know what is the "b" version of the cdma2000 standard? >>

This refers to phased development of the 3GPP2 cdma2000 standards.

First there was Release 0.

Release 0 (essentially the first phase of 1xRTT) dates back to July 1999 and it did not incorporate all of the requirements that 3G3 harmonization added.

The MSM5000 used for the commercial "launch" in Korea was essentially developed to this standard.

Release A is the cdma2000 standard published in spring of 2000 and formally accepted by the ITU for IMT-2000. It is generally analogous to 3GPP's 'R99". Like 'R99' Release A was not fully developed and completely stable at time of it's publication (although it appears that it was considerably more forward compatible than 'R99' at time of publication. It remains a work in progress.

The MSM5105 is Release A compliant as will be the MSM5100.

Concurrently Release B is being worked on.

Somewhere I have a listing of functionality in Release 0 that was not completed and pushed forward to 'RA' and a listing of functionality being added in 'RB'. If I run across it I'll post.

All this somewhat analogous to 3GSM 'R99', 'R4' (which essentially mirrors 'R99' with additions related to MMS et al) an 'R5' (which focuses on the all IP core and related HSDPA extension to WCDMA)

- Eric -



To: tradeyourstocks who wrote (15324)9/28/2001 2:25:24 PM
From: foundation  Read Replies (1) | Respond to of 197228
 
"...KDDI now plans to offer a packet communication service that will support 144-kbit/second transmissions this autumn, based on the "b" version of the cdma2000 standard.

------------

Something is clearly wrong with the reporting.

Without 1x services, that KDDI delays, 144kbs is not in the cards.

95B is not a cdma2000 technology, which evolves from 1x.

Nothing in cdma Release B can elevate KDDI's 95B network performance to 144kbs.

And earlier KDDI stories have clearly noted that they plan expanded services at 64kbs beginning autumn.

For those who saw an earlier version of this post, 1xevdv specifications will be part of cdma2000 Release C.