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To: Maurice Winn who wrote (8778)	1/11/2001 6:39:06 PM
From: Eric L	Respond to of 34857

Maurice, << Okay, EricL ... I asked the other Eric >> Are you seeing double? <g> << what fraction of the total cost of a system is the air interface electronic gizzardry? >> I don't have a clue. << My guess is that the air interface components are about 70% of the cost of a base station's electronics. >> Maybe, but remember that in a UTRAN which is supporting handoff with GSM and GPRS we are not talking all CDMA here. << If W-CDMA is less spectrally efficient, as QUALCOMM says ... >> Yes. IF. Or IF W-CDMA is as efficient as cdma2000 as the guys on the UMTS bench claim ... I got slides ... you got slides ... it's ALL VW-40 right now. << acronym heaven [which is my vision of hell] >> Mine too, and we have a whole new set to learn. Best reasonbly concise overview I have seen yet for UMTS (explaining all the lovely new acronyms is here): unet.univie.ac.at Let me point out one sentence from that overview: "It is expected that UTRANs will start as islands (e.g. city centres, business areas, industrial plants,) in a sea of GSM Base Station System (BSS). GSM BSS access networks will be a key element for service continuity in UMTS networks." This is a very important point to remember when considering why a GSM carrier is not likely to consider 1xRTT or HDR when considering his choice of technology for a third generation IMT-2000 network in 2 Ghz spectrum. I listed a few other possible reasons here: Message 15105100 - Eric -

To: Maurice Winn who wrote (8778)	1/17/2001 12:37:13 PM
From: Eric L	Read Replies (1) \| Respond to of 34857

mQ, You asked: << what fraction of the total cost of a system is the air interface electronic gizzardry? >> "Lucent expects operators to spend around 45 percent of their UMTS investment on UTRAN radio systems, 20 percent on equipment and base stations and 20 percent on core networks." Message 15196176 That totals 85%. I'm guessing that the 15% is on "other equipment" - Billing System, Voice Mail, etc., but I'm not sure. I think all this is on top of license. That is still not totally answering your question ... but, interesting breakdown, none the less. You also said "My guess is that the air interface components are about 70% of the cost of a base station's electronics." That sounds reasonably, reasonable to me. - Eric -