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Core & RAN traffic

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  • #69947 Reply
    Sofiane
    Guest

    Hi All,

    I’m working for a mobile carrier, and I’m asked by my head-office to provide the Core traffic (Voice, Data, SMS), and the RAN Traffic (Voice, Data, SMS), but in the same worksheet cell, so I supposed that it should be in the same unit “Erlang” maybe! I’m in fiance, so I asked my colleagues from network but and they told me that they are able to provide only the voice in Erlang, Data is in GB and SMS in # …

    Anyone have a solution?

    thanks in advance for your support

    #69948 Reply
    Wallis Dudhnath
    Guest

    Hi Sofiane,

    Historically, Telecommunications Networks (e.g. Wireline) were dimensioned based on forecasted traffic volume.

    This was based on the Erlang. This helped operators to understand the number of circuits (e.g. E1.0s) that will be required. Additional software features could be procured or the license could be increased.

    Erlang is the main unit that is used for Voice. It is key for GSM/3G/4G for Voice based telephony services.

    As Mobile Broadband is now a part of the landscape the MB figure has to be used.

    As most Networks now have a “convergent” BSS in place you can obtain Traffic information/statistics
    from the SCP (Control) node. This will handle Voice (CAMEL) and Data (Diameter) traffic.

    VBR/ Wallis Dudhnath

    #69949 Reply
    sofiane
    Guest

    Hi Wallis,

    Appreciate your feedback; it’s not possible to convert MB to Erlang to have total figures (voice + data) in the same units ?

    BR
    Sofiane

    #69950 Reply
    Wallis Dudhnath
    Guest

    Hi Sofiane,

    You have raised an excellent question.

    Short answer: You will need a separation. From experience with GSM/3G/Wireline/etc.. I always have a separation.

    An Erlang is a unit of telecommunications traffic measurement and it
    basically represents the continuous use of one Voice circuit / connection.
    Erlang has it’s connection with the early days of Voice Telephony services.

    Lets look at a quick example. If a group of user made 30 calls in one hour, and each call had an
    average call duration of 5 minutes, then the number of Erlangs this represents is worked out as follows:-

    Minutes of traffic in the hour = number of calls x duration
    Minutes of traffic in the hour = 30 x 5 = 150
    Hours of traffic in the hour = 150 / 60 = 2.5

    Traffic figure= 2.5 Erlangs

    For blocking we can use ErlangB – this is another topic.

    For your case I would have a separation of Voice and Data.

    -Erlangs (or mErlangs) can be used for your GSM/3G/4G Voice.

    -Number of SMSs/MMSs Hour for SMS/MMS services. Information can be derived from your
    SMS-SC / MMS-SC.

    -Data (Mobile Broadband and PCRF): Use the information from your SCP (Diameter Requests)

    Please let me know if you need any further information.

    VBR/ Wallis Dudhnath

    #69951 Reply
    sofiane
    Guest

    Great thanks for your support Wallis, It’s very useful 🙂

    BR
    Sofiane

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