- This topic has 12 replies, 1 voice, and was last updated 8 years, 11 months ago by pix.
12th November 2010 at 08:02 #64949SaheedGuest
I am a drive test guy working with a telecom company in Nigeria, pls I will really appreciate if anybody can give me detail explanation on how MAIO and HSN work, also I want to know how to know which of the trx one while one is using while on a call in a network running on SFH, before we were using grouped frequency and we know the trx one is using with allocated ARFCN.12th November 2010 at 09:38 #64950pixGuest
During drive test, you can identify the trx on which you are doing the call thanks to the MAIO. Each trx of the cell has a unique MAIO.
only exception : If the hopping mode is “synthetized freq hopping”, and if the call is on the TRX1 (bcch), then you will see a fixed frequency on this TRX. Indeed, the trx1 is not hopping in case of synthetized frequency hopping.
In case of baseband hopping (bbh), the trx1 is hopping like any other trx.
For detailed explanation about hopping, hsn, maio, etc, please use the search function.
pix12th November 2010 at 11:55 #64951navcGuest
Antenna hopping comes under which mode synthesised or baseband13th November 2010 at 06:13 #64952pixGuest
antenna hopping is independant from the frequency hopping mode. It works with bbh and sfh, and nh as well.
pix13th November 2010 at 21:51 #64953BrotherGuest
by the way the first question of a new dt guy is most of the time hsn and maio16th November 2010 at 06:20 #64954Sreni,Guest
MAIO is the numbr which tels from which freq. From give MA(Mobile allocation) list for sector hoping has to be startd..eg: 0 means it wil start with first freq. To hop
and HSN tells the sequence in which the frequencies from MA list are allowed to hop (0 to 63) 0 for cyclic hoping nd 1 to 63 for random hoping…
Regards.3rd May 2012 at 23:26 #64955HappyGuest
So its mean MAIO will not use in case of BBH use..
Thanks4th May 2012 at 11:45 #64956pixGuest
MAIO could be used if the system allows it (i think ALU allows it) but is not useful. It doesn’t serve any purpose.
(unless you are using a synchronized network, but that has never been done before AFAIK, the feature is too recent)
pix5th May 2012 at 19:49 #64957HappyGuest
Thank You its mean in BBH MAIO or HSN values will not affect.
How could i know whether the network are synchronized.
Happy5th May 2012 at 20:38 #64958BijoyGuest
!!!!!!!!6th May 2012 at 06:27 #64959pixGuest
yes, no effect of maio and hsn in case of BBH
bijoy -> i can do better : !!!!!!7th May 2012 at 18:12 #64960BijoyGuest
If you insist,let me explain.
In BBH,two Hopping groups has to be defined with two different HSNs for a cell with BBH.All radio time slots (RTSL-0), except the BCCH time slot, on the BTS belong to Group 1,rest all RTSL belong to Group 2 .Also,MAIOs has to be different between same RTSLs in the same hopping Group.
This is as per Ericsson,Nokia & Huawei Standards.
Bijoy7th May 2012 at 18:52 #64961pixGuest
I’m glad I insisted ! I totally forgot about this.
Let me say it so I won’t ever forget it again :
In BBH, MAIO’s are used to avoid intracell interferences.
Thx guru 😉