Radio link management in hierarchical networks
Cell Layers and Dwell Time
Mobile speed is estimated from the variation of the field strength received by the mobile from the target cell. Considering the case of a network composed with three layers. The method of
estimation is based on the computation of two averages of the field strength received by the mobile from the target cell.
– A “fast” mobile connected to a cell of the lowerlayer must
handover towards a cell of the middlelayer. Nevertheless the field strength received from the cell of the middlelayer must be high enough to trigger the handover.
– A “slow” mobile connected to the lowerlayer must handover
towards a cell of the same layer.
In both cases the estimation of mobile speeds are based on the
field strength received from a cell of the lowerlayer.
– A “fast” mobile connected to a cell of the upperlayer must
handover towards a cell of the same layer.
– A “slow” mobile connected to a cell of the upperlayer must
handover to a cell of the middlelayer.
In both cases the estimation of mobile speeds are based on the
field strength received from a cell of the middlelayer.
– A “fast” mobile connected to a cell of the middlelayer must
handover towards a cell of the upperlayer. Nevertheless the field
strength received from the cell of the upperlayer must be high
enough to trigger the handover.
The estimation of mobile speeds is based on the field strength
received from a cell of the middlelayer.
– A “slow” mobile connected to a cell of the middlelayer must
handover towards a cell of the lowerlayer. The estimation of
mobile speeds are based on the field strength received from a cell of the lower layer.