- This topic has 8 replies, 1 voice, and was last updated 11 years, 8 months ago by uji.
9th February 2009 at 07:18 #55671AwacsGuest
Please tell me what is MAIO and HSN…..It’s so damn confusing…If MAIO=6 and HSN=42 then what would be the tme interval between two hops and with which frequency a cell will start to hop,Thanx9th February 2009 at 07:49 #55672pixGuest
time interval is always 1 TDMA frame.
Each TDMA frame is sent over a new frequency.
Starting frequency: each TRX will start on the frequency which is located at the position number “MAIO” in the list of frequencies “MA LIST”. The MA list is a range of frequencies f1, f2, f3, …
Problem is you don’t know how the MA list iw arranged, because it is randomly arranged (based on the number HSN. Suffice to say that a TRX with MAIO=1 and a TRX with MAIO=2 will start with different frequencies.
At TDMA=0, TRX1 = f1, TRX2=f2
At TDMA=1, TRX1 = f2, TRX2=f3
At TDMA=2, TRX1 = f3, TRX2=f4
But if you set MAIO = 1 on TRX 1 and MAIO = 10 on TRX 2, this is what you’ll get:
At TDMA=0, TRX1 = f1, TRX2=f10
At TDMA=1, TRX1 = f2, TRX2=f11
At TDMA=2, TRX1 = f3, TRX2=f12
and so on.9th February 2009 at 08:14 #55673AwacsGuest
So this means that only frames hop….. timeslots in a frame have nothing to do with hopping?…….Thanx a lot Pix.9th February 2009 at 17:48 #55674PixGuest
With default settings in SFH, all timeslots in the frame are using the same frequency.
There is one exception though, in BBH : the timeslot 0 of each TRX uses different frequency than timeslots 1 to 7.
… but only for BBH.
For SFH, it could be possible to define different hopping sequences for each timeslot, but that’s:
1/ terribly difficult to configure
2/ absolutely useless (who said dumb?)10th February 2009 at 05:21 #55675AwacsGuest
Thanx a lot man….but i m still confused abt HSN and Hopping load:(10th February 2009 at 12:29 #55676PixGuest
Well, I’m not confused (am I ??… 🙂 )
If I can help, let me know.10th February 2009 at 21:47 #55677ujiGuest
maio is used 2 decide the starting frequency.
hsn is used 2 decide the hopping sequence11th February 2009 at 16:27 #55678SFHGuest
Send us yr Email address, I will send u short and nice SFH doc.,
Regards12th February 2009 at 21:13 #55679ujiGuest
my email address is firstname.lastname@example.org