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Technology Stocks : Qualcomm Moderated Thread - please read rules before posting
QCOM 175.25+0.6%Dec 19 9:30 AM EST
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To: samim anbarcioglu who wrote (5511)12/16/2000 10:24:11 AM
From: John Walliker  Read Replies (1) of 197003
 
samim,

Air interface means physical layer. While GPRS does have a physical layer, GPRS itself is not a physical layer, it is a service that uses the physical layer.

However, GPRS does modify the GSM physical layer in some important ways. One of these is in the use of multiple timeslots which has a large impact on the thermal design of the handset transmitter circuits. Existing handsets allow the output stage to cool between each transmission pulse - this is not possible to the same extent with GPRS, so more efficient heatsinks are needed.

John
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