- This topic has 25 replies, 1 voice, and was last updated 15 years, 5 months ago by Pix.
-
AuthorPosts
-
15th June 2009 at 18:26 #57319PixGuest
If I’m the one spreading revelations, shall you raise a church in my name ? 🙂 Just kidding.
Too bad I’m spreading the truth when the rest of the world is already moving into 3G …
But you know, the pseudo BBH is obvious if you look in RNO.. When one TRX is failing in BBH, only calls handled by this TRX are dropped. For example, in a 4 TRX’s cell, if 1 is faulty, then only 25% of calls are dropped.
All other TRXs are ok.Cheers,
Pix16th June 2009 at 09:12 #57320IvannGuest… :)))
Nice idea:) I like it ! The first virtual church of St.Pix – the greatest prophet of Alcatel-Lucent….
16th June 2009 at 13:05 #57321St. PixGuestI feel the light.
🙂
17th June 2009 at 09:23 #57322IvannGuest;))
Dear St.Pix,
… What do you mean “is failing in BBH” – case when there are no alarms on trx at all, and it seems normal but has problem with frequency synthesizer (for example) and has bad KPIs ? If yes – ooh, I saw this problem very often in RNO – a huge red spot on RxLev/RxQual DL matrix, and – as a consequence – yes, increasing of DCR. But it was a puzzle for me which couldn’t be explained with our docs.
Moreover, another simple situation is clear for me now: why in case of low traffic in the cell with 2 or 3 tres (BBH of course) we can see measurement only for one tre (usually – the last TCH tre). If MS hops between tres and served by different tres we must see rather different picture :)))You are absolutely right about GSM (or DCS) – it’s last century :((
As for our company – while it’s getting 80% of its benefit from GSM network we must devote 99% of our working day to it. We have just deployed a 3G network – 1xEVDO (450MHz) on Alcatel-Lucent equipment. It isn’t large but it works!! Now I’m at the beginning of exploring its behavior :)))))17th June 2009 at 13:09 #57323PixGuest… What do you mean “is failing in BBH” – case when there are no alarms on trx at all, and it seems normal but has problem with frequency synthesizer (for example) and has bad KPIs ? If yes – ooh, I saw this problem very often in RNO – a huge red spot on RxLev/RxQual DL matrix, and – as a consequence – yes, increasing of DCR. But it was a puzzle for me which couldn’t be explained with our docs.
====> Yes, that’s it !
Moreover, another simple situation is clear for me now: why in case of low traffic in the cell with 2 or 3 tres (BBH of course) we can see measurement only for one tre (usually – the last TCH tre). If MS hops between tres and served by different tres we must see rather different picture :)))
=======> Perfect example, probably more obvious than the “trx failure” call drops.
gotta go,
cheers,
pix6th July 2009 at 22:00 #57324RexGuestHi,
if we have 50 channels in frequency list for SFH (1×1), for example 1 to 50, and if we use 1 to 50 with offset 2 (1, 3, 5, ..49), could we have better performance than that using all 50 channels 1 to 50 (1, 2, 3, 4, …,50). Config=4x4x4.
BR,
Rex7th July 2009 at 14:01 #57325RexGuestAnybody?
7th July 2009 at 16:27 #57326HaryGuestwithout using between?
7th July 2009 at 17:09 #57327PixGuestRex,
I doubt there will be any improvement. Your MAIO planning is already avoiding co and adj channel interferences, so what is the benefit of your solution ? Avoiding adj channel interference with neighbour sites ?
8th July 2009 at 10:10 #57328Rex,GuestHi Pix,
I just wondered if it has better performance during the hopping in one TRX (voice quality, etc.). Nothing else.8th July 2009 at 13:13 #57329PixGuestHi Rex,
So simple answer : no improvement.
-
AuthorPosts
- The forum ‘Telecom Design’ is closed to new topics and replies.