MOBILITY PARAMETERS

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MOBILITY PARAMETERS

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The mobility parameters define the handover of mobile terminals between cells:

 

multicoverage_mobility_params

 

Compute areas without possible transfer. If this option is activated, the calculation shows the map with the areas where there are problems for the handover from one cell to another.

Allow aggregation between stations. If this option is deactivated, the aggregation between carriers can only be done between sectors that belong to the same station..

 

In the layer definition table, the user defines the priority of the different layers and the handover conditions between cells of the same layer. The user defines for each layer:

Search threshold. Indicates the RSRP signal level from which to search for neighboring cells available for handover.

Handover threshold. When the RSRP signal of the sector to which a mobile is connected falls below this handover threshold, handover is attempted to another cell that has a higher signal level.

Neighbor cell threshold for handover. When the above condition is met, the handover occurs when the signal level of the neighboring cell exceeds this value.

With the example in the image, when the received RSRP signal is lower than the search threshold (-110 dBm), the search for available neighboring cells begins. If the signal level continues to decrease and reaches the handover threshold value (-120 dBm), handover is attempted to another cell whose received signal level is at least the specified neighbor cell threshold (-116 dBm).

When the option to calculate areas without possible transfer is selected, the result of each layer will have an additional result with a map with the zones where the transfer to another cell is possible and the zones where there is no possibility of transfer with the defined conditions.

The traffic balancing table establishes the conditions in which load balancing occurs between cells of different layers. These relationships should always be defined between higher to lower priority layers.

When a new row is added to the table, the balance between the highest priority layer and the following ones is proposed. It is not essential that the names of the layers exist and it is also not necessary to define all the relationships between the layers in the study. If a relationship is not defined, the transfer will not take place between the layers involved.

The user defines for each pair of layers the type of balance to use:

Equal load. The balancing will ensure that the sectors involved in the balance end up with the same percentage of load. Balancing is limited so that the neighboring layer's sector load does not exceed its maximum load threshold.

By load. When the server layer sector load exceeds the maximum load threshold, balancing of the remaining load to the neighboring layer sector occurs. Balancing is limited so that the neighboring layer's sector load does not exceed its maximum load threshold.

Always. Load balancing will try to send as much load as possible to the neighboring layer sector. Balancing is limited so that the neighboring layer's sector load does not exceed its maximum load threshold.