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MAIO Plan

  • This topic has 60 replies, 1 voice, and was last updated 2 years ago by Lemaure.
Viewing 15 posts - 46 through 60 (of 61 total)
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  • #55951 Reply
    Fresh Opt
    Guest

    Thanks Pix,
    We need second TRX in PGSM because of SDCCH (it wont work with G1). The indicator for EGSM users is in RNO, yes. The network design is not good but it’s not bad too. The amount of interference is bad, yes, mainly from other illegal operaters from outside. Our country is small and every operator from neighbours is present. The whole band 1 to 124 is impacted.
    Regards,

    #55952 Reply
    Pix
    Guest

    Thanks for the details. If you need more help, please let me know.

    You are right then, to use a lot of frequencies in your MA lists. If you remove frequencies from the second TRX, there is a risk to decrease the QoS as well.

    The radio load thresholds I gave are fine for “non-interfered” network. I don’t think they apply anymore in your case.

    #55953 Reply
    Abdullah khan
    Guest

    What is MAIO? Why we use MAIO? AND What is hopping frequency ?
    and how MAIO and hopping frequency are related?

    #55954 Reply
    Vas
    Guest

    I really can’t understand what is MAIO,HSN,MA.How to apply them?Give me plss example for MAIO inplementation and realisation.

    #55955 Reply
    Ali
    Guest

    If i have same Ma list for all sectors and using 1*1 freq how do we plan maio

    #55956 Reply
    pix
    Guest

    hi,

    allocate the MAIO in a “circle” fashion, incrementing the maio +1 from one sector to the next.

    example:

    s1 trx1 = 0
    s2 trx1 = 1
    s3 trx1 = 2

    s1 trx2 = 3
    s2 trx2 = 4
    s3 trx2 = 5

    s1 trx3 = 6
    s2 trx3 = 7
    s3 trx3 = 8

    etc…

    Regards

    pix

    #55957 Reply
    Lemaure
    Guest

    i think the choice of TRX MAIO depends on the nature of your malist
    if the frequencies of the malist are consecutive, the MAIO should have a difference of 2 to avoid adjacent interferences. so the allocation should be

    s1 trx1 = 0
    s2 trx1 = 2
    s3 trx1 = 4

    s1 trx2 = 6
    s2 trx2 = 8
    s3 trx2 = 10

    s1 trx3 = 12
    s2 trx3 = 14
    s3 trx3 = 16

    also remember that your MAIO should not go above N-1 (N: number of frequencies in the MALIST)

    #55958 Reply
    pix
    Guest

    hi lemaure,

    -> you’re right 🙂 step of “2” to avoid adj ch interference.

    Apologies for my mistake !

    Regards,

    pix

    #55959 Reply
    Ali
    Guest

    Thanks i have below MAl list
    1,2,3,4,5,6,7,8,9,10,11,12
    Configuration is 2/2/2 i have to plan Maio for it, plz suggest

    #55960 Reply
    Lemaure
    Guest

    s1,2,3 trx0: nonhopping

    s1 trx1 = 0
    s2 trx1 = 2
    s3 trx1 = 4

    s1 trx2 = 6
    s2 trx2 = 8
    s3 trx2 = 10

    #55961 Reply
    Lemaure
    Guest

    Noticed that with this MALIST you can’t go above the MAIO 10 because the MAIO 12 is EQUAL to MAIO 0. So this MALIST is made for not more than 6TRX on a site. In case of high traffic on a sector you either push out the traffic (parameters optimisation)or do a whitelist on a low traffic sector of the same site(from 2==>1 TRX).

    #55962 Reply
    pix
    Guest

    Hi,

    It’s just 2/2/2 configuration, not 3/3/3, so your 1st part was enough :

    s1,2,3 trx0: nonhopping

    s1 trx1 = 0
    s2 trx1 = 2
    s3 trx1 = 4

    By the way,

    you’re having 3 hopping TRX on this site, and a MA list of 12 ARFCN.

    So that gives a RF load of 3/12=25%, which is quite high (typical target is below 20%). If neighbours are nearby (urban area), then you can expect high interference during Busy Hour, when the second TRXs are loaded to 100%.

    If site is located in a rural area, then it should be fine.

    Regards,
    pix

    #55963 Reply
    Lemaure
    Guest

    that’s right Pix. you should really have a low traffic network to ensure good quality with this short MALIST. But if it’s just an umbrella layer i thnk it can still work.

    #55964 Reply
    RF
    Guest

    Hi pix,

    we have 17 freq in MA list..
    Can i use 1 x 3 Freq plan???
    please reply earlier…i want to implement in my network asap

    #55965 Reply
    kheang
    Guest

    If we have 8 TRX in sector 1. we assign MAIO 0,4,12,14,18 in TRX. for the TRX doesn’t assign MAIO will hopping or not ? or do we need to assign MAIO for all TRX to get FH ?

Viewing 15 posts - 46 through 60 (of 61 total)
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