FFR setting

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  • #7376

    Dear Fjolla,

    When i use FFR schedular , i got an error, as follow:

    LTE_config.scheduler = ‘FFR’;
    LTE_config.scheduler_params.FR_scheduler.scheduler = ’round robin’;
    LTE_config.scheduler_params.PR_scheduler.scheduler = ’round robin’;
    LTE_config.FFR_params.beta_FR =0.01;
    LTE_config.FFR_params.SINR_threshold_value =5;

    the following error :

    No appropriate method, property, or field ‘PMI’ for class ‘network_elements.resourceBlockGrid’.

    Error in network_elements.resourceBlockGrid/clone (line 89)
    cloned_RB_grid.PMI = obj.PMI;

    Error in utils.ffrUtils.filter_RB_grid (line 24)
    a_RB_grid = a_RB_grid.clone();

    Error in schedulers.ffrScheduler (line 126)
    obj.FR_scheduler.RB_grid = utils.ffrUtils.filter_RB_grid(obj.RB_grid,obj.FR_assignment);

    Error in schedulers.schedulerFactory.create_scheduler (line 83)
    new_scheduler = schedulers.ffrScheduler(scheduler_params,eNodeB);

    Error in LTE_init_generate_users_and_add_schedulers>LTE_init_add_schedulers (line 337)
    sites(b_).sectors(s_).scheduler =

    Error in LTE_init_generate_users_and_add_schedulers (line 151)

    Error in LTE_sim_main (line 75)
    [UEs, extra_UE_cache_info, LTE_config] =


    Dear Naser,

    Thanks for reporting this error, it was a bug in the simulator. I just fixed this bug concerning the FFR scheduler in +network_elements\resourceBlockGrid.m. Please re-download the simulator to get these changes.

    Best regards,


    Hi Fjolla,

    Since I am using the v1.9 Q2-2016 version of the simulator,
    can I use the FFR scheduler simulations properly
    after downloading the legacy version of the simulator and replacing the resourceBlockGrid.m file with the newer one?

    Or, do I need to re-download the whole simulator of the v1.9 Q2-2016.

    Best Regards,


    Dear Chris,

    I would suggest to re-download the updated v1.9 Q2-2016 and replace the corresponding files: resourceBlockGrid.m and in +utils/ffrUtils.m.
    Please contact sim-download@nt.tuwien.ac.at to get the updated link for re-download as there have been an update recently and the old link is not available anymore.

    Thanks for understanding,

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