Coverage areas

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  • #8984
    shahram
    Participant

    Dear all
    In case we have a heterogeneous network which contains Marco cells, Femto cells, RRH, is there any way to find out the coverage areas of which BSs are overlapped to distribute the load over other cells?
    Thank you

    #8987

    Hi Sharam,

    there shouldn’t be any “overlap” – the area is dicretized with a finite resolution and each pixel is uniquely assigned to one BS, based on the large scale pathloss (including antenna gain and shadow fading). This happens before the actual simulation loop.

    Just an idea for what you want to do: for each pixel you could keep track of the second strongest BS and generate a “secondary” cell-association map. (But I am sure there are other approaches that might work.)

    Best,
    Martin

    #9041
    Sherif
    Participant

    Dear Martin,

    Further to Shahram’s question, can you please clarify the femtocell “overlap” in the attached image link.

    Simulation with 0 ring, three femtocells per macrocell sector. It appears the coverage areas of femtocells 10 and 12 (within the macrocell sector 3) are overlapping.

    Thank you.

    Sherif

    https://imgur.com/a/vbErV

    • This reply was modified 4 years ago by Sherif.
    • This reply was modified 4 years ago by Sherif.
    #9055

    Dear Sherif and Sharam,

    As Martin mentioned above, there is no overlapping area because the sector assignment is done pixelwise, and one pixel can’t be assigned to two base stations at the same time. From your attached figure, it really looks like the coverage area of the two femtocells is overlapping (because the same colour is used to plot all femto coverage areas), but if you look at networkPathlossMap.maxSINR_assignment and plot it using the command imagesc(networkPathlossMap.maxSINR_assignment), then you will actually see the coverage area of each macro and femto base station and observe that there is no overlapping.

    See the plot here CoverageAreas.jpg

    Best regards,
    Fjolla

    #9064
    Sherif
    Participant

    Dear Fjolla and Martin,

    Thank you so much for the clarification. It makes perfect sense with the different colors. It means the supposed overlapping area actually belongs to one of them, and cut out from the coverage area of the other (based on the maxSINR_assignment).

    Hopefully, the “supposed overlap” area can be an interesting feature for dual connectivity.

    Again, many thanks.

    Best regards,

    Sherif

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