- This topic has 40 replies, 1 voice, and was last updated 13 years, 5 months ago by pix.
14th June 2006 at 12:36 #44718PanjiGuest
What factors should i prepare if i want to make RF Hopping or Synthesizer Frequency Hopping(SFH) in a site/zone?And can u explain the step and their parameters? Please help me, Thx a lot 4 ur answer.14th June 2006 at 16:00 #44719l3p15Guest
As general, how many bts in one cluster is mostly important, for full network , itsmean need much ARFCN so, its better to use HY than BB, for traffic is less better to use BB..25th June 2006 at 12:34 #44720RyanGuest
Please Help Panji!,I need that information too.27th June 2006 at 08:20 #44721ali123Guest
What factors should i prepare if i want to make RF Hopping or Synthesizer Frequency Hopping(SFH) in a site/zone?And can u explain the step and their parameters? Please help me, Thx a lot 4 ur answer.27th June 2006 at 15:03 #44722joseGuest
i’m rf engineer
want can i do if i have drop call due to sudden loss
thanks7th November 2006 at 12:40 #44723AdeelGuest
could some one explain to me what the term “MAIO Step” means. i know about MAIO offset, but i never heard of MAIO step.8th November 2006 at 15:45 #44724PixGuest
i never heard about this… maybe it is the same thing as offset ? what is the context in which you read this words ?9th November 2006 at 02:56 #44725PanjiGuest
MAIO Offset = show the different using MAIO between TRX, in order to minimize interference, start with MAIO offset.
Example: (with MAIO Step =2)
TRX 2 = using MAIO 4
TRX 3 = using MAIO 6
TRX 4 = using MAIO 810th November 2006 at 09:27 #44726yogesh_rfGuest
MAIO step is in Nokia Equipment and it is the diff. between two MAIO values for ex. if you use your MAIO as 2,4,6,8,…… like that then MAIO step is 2.
Yogesh_rf15th November 2006 at 05:31 #44727bodoruddozaGuest
My company has license for 24 1800 freq. from 601 to 624.
then how many HSN and MAIO we can use in our company’s network?
There is any restrictions on using HSN and MAIO for the licensed freq?
for the above freq., are there any specific HSN or MAIO which only can be used?15th November 2006 at 06:27 #44728pixGuest
first you have to design your average site configuration (3×4 ?)
For a 3×4 configuration, it will require 12 frequencies, which are NOT adjacent. with your current frequency band (24 channels), you can barely get one “clean” site… but the next site will use all adjacent channels.
well, in this case you’ll need to use avery agressive frequency re-use planning and a perfect network design… and therefore you need an expert radio engineer to plan it and follow-up.16th November 2006 at 05:20 #44729bodoruddozaGuest
Tanks a lot for ur prompt response.
But, could u plz. answer actually what I want?
I want to know in SFH case, have we require any specific MAIO and HSN for our specific ferq. channel?18th November 2006 at 21:13 #44730MichaelGuest
Please i need some very specific ideas here. In our network we are having this funny experience of MAIO ofset frequency exceeded. I learnt MAIO was not turned ON on the BSCyet.
I have also found out that this is common with BB hopping. Can anyone help out with how to plan plan frequency and manage Hopping employing the BB hopping mode.26th February 2007 at 07:36 #44731YENGuest
HSN has a value from 0-63 and each value corresponds to a certain hopping sequence. i.e. frequencies to hope on.
so, HSN =0, means cyclic hopping (no hopping, generally BCCH carrier)
but HSN=1-63, means pesudo-random hopping.
I want t know say, HSN =6 , what does it means?
Let, i have 40 ARFCN (from 1-40), 1-15 is used for BCCH, 16&17 for guard period, 18-40 is in MA List.
If I put HSN = 13, what does it stands for? And what is its hopping sequence?
Thanks28th February 2007 at 14:09 #44732UZz ManGuest
Well actually each HSN Number corresponds to a different pseudo random sequence … different HSN for different sites simply means that even with the same MA list they will be on different carriers at a certain instant of time