Qualcomm Moderated Thread - please read rules before posting Message Board

STOCKTALK

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor. We ask that you disable ad blocking while on Silicon Investor in the best interests of our community. If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.

Technology Stocks : Qualcomm Moderated Thread - please read rules before posting

QCOM 174.01

-0.3%

Nov 14 9:30 AM EST

Public Reply Prvt Reply Mark as Last Read File

Previous 10 Next 10 Previous Next

To: rkral who wrote (23469)	6/6/2002 6:07:41 PM
From: mightylakers	Read Replies (1) of 196652

All the measurements are done in the timeslots when there are no Rx or Tx(for the none serving cells), when you are in traffic mode, you need to report the measurement for every SACCH, which mean in 104 frames(?) period, as for how many samples you make during that period I think it is a vendor decision although I maybe wrong. The candidate list is provided by the basestation via the control channel.(SACCH) When you are in the idle mode for cell reselection, you try to scan all the candidate cells within 5s period I believe. Changing frequency back and forth should not be a problem, as a matter of fact GSM uses frequency hopping to improve frequency diversity. DSP can handle that very well. When in GPRS, the measurements are made on the PCCCH or BCCH in packet idle mode, when in packet transfer mode it is done on PACCH or BCCH. Since GPRS is a packet mode so I think the measurement would be a little more dynamic but overall it should be able to keep the average number of measurement. I don't know how will EOTD be implemented, my guess is that it will try to utilize what ever the result it already hass in hand for the most recent measurement. That is not the problem IMO, what may cause the problem is that there will be a lot of areas that you simply can't decode the signal from other cells because of your location, for instance you are very close to one or two cells but a little further to other cells. In that case there's no way for you to obtain the timing info from other cells correctly therefore render the algorithm into infinite solutions, or no solution state, either way the result will go bonker.

Report TOU Violation

Share This Post

Public Reply Prvt Reply Mark as Last Read File

Previous 10 Next 10 Previous Next