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Graph of real world 4G performance/speeds

  • 13-11-2013 11:35am
    #1
    bealtine
    Registered Users, Registered Users 2 Posts: 4,051 ✭✭✭


    Hucfqb2.png


Comments

  • #2
    oscarBravo
    Technology & Internet Moderators Posts: 28,820 Mod ✭✭✭✭oscarBravo


    The X-axis is concurrent users?


  • #3
    bealtine
    Registered Users, Registered Users 2 Posts: 4,051 ✭✭✭bealtine


    oscarBravo wrote: »
    The X-axis is concurrent users?

    yes


  • #4
    bealtine
    Registered Users, Registered Users 2 Posts: 4,051 ✭✭✭bealtine


    Here's the original source, well where I picked it up from :


    http://nbnmyths.wordpress.com/

    Refers to Australia but applies equally here


  • #5
    watty
    Registered Users, Registered Users 2 Posts: 32,417 ✭✭✭✭watty


    It's a generous graph, as you move it SLOWER according to key for signal quality.

    So for the number of users evenly spread over a full cell area, the median user speed is about 1/4 or less the suggested speed.

    It's also full duplex 20MHz + 20MHz. If you have 10MHz, it's 1/2, if you have 5MHz, it's 1/4.

    Very old news: 2009
    http://www.radioway.info/comparewireless/img10.html

    Here many users see under 0.5Mbps
    http://www.radioway.info/comparewireless/img11.html


  • #6
    watty
    Registered Users, Registered Users 2 Posts: 32,417 ✭✭✭✭watty


    bealtine wrote: »
    Here's the original source, well where I picked it up from :


    http://nbnmyths.wordpress.com/

    Refers to Australia but applies equally here

    No, I think here is much worse :)

    I thought the headline speed is 1/2 to 1/4 here, only 10MHz and 5MHz spectrum per operator.

    You really need 3 channels of 20MHz Duplex to get a graph as good as that on a real network, 120+ 120 MHz. Who has as much as that here?


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  • #7
    bealtine
    Registered Users, Registered Users 2 Posts: 4,051 ✭✭✭bealtine


    These are the conclusions of the mobile industry, granted it's from 2009 just after the LTE standards were frozen . It is however FROM the mobile industry:

    http://www.atis.org/lte/documents/Does%20LTE%20Do%20What%20It%20Says%20on%20the%20Box.pdf

    Explains the effects of the shared nature of radio networks, in this case mobile.

    (old hat for the user of this group but worth re-stating now we have all the "sooperfast nonsense in the media)

    Includes key points like this:

    "At any given instant, the cell’s spectral resource is shared between all active users" also has an excellent graphic on page 16 which shows why LTE will never delivers 30Mb/s or indeed any guaranteed speed...


  • #8
    AlanS181824
    Banned (with Prison Access) Posts: 5,575 ✭✭✭AlanS181824


    Very interesting. Thanks OP


  • #9
    justforgroups
    Registered Users Posts: 153 ✭✭justforgroups


    bealtine wrote: »
    yes
    You mean the scale is individual users? Or is the scale per hundred, thousand, million...?


  • #10
    bealtine
    Registered Users, Registered Users 2 Posts: 4,051 ✭✭✭bealtine


    justforgroups wrote: »
    You mean the scale is individual users? Or is the scale per hundred, thousand, million...?

    individual users


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