GPRS Cell Reselect Hysteresis(dB)

GPRS Cell Reselect Hysteresis(dB)

This parameter specifies the hysteresis of cell reselection in the same routing area.

When an MS in the ready state performs cell reselection, if the originating cell and the target cell belong to the same routing area, the C2 value measured in the overlapped area of two adjacent cells fluctuates greatly because of the fading feature of radio channels. Therefore, the MS frequently performs cell reselection. The frequent cell reselection not only increases the signaling flow on the network and affects the utilization of radio resources, but also greatly affects the data transmission rate of the MS and decreases the QoS as a consequence.

When this parameter is used, the MS starts cell reselection only when the signal level of the neighbor cells in the same routing area is higher than that of this cell, and when the signal level difference is greater than the value of this parameter.

If this parameter is set to an excessive value, it is hard to start cell reselection.

[0,2,4,6,8,10,12,14]

2

dB

-

None

In the same routing area, if this parameter is set to an excessive value, it is hard for cell reselection. If this parameter is set to a modest value, the frequent ping-pong reselection occurs.

2

GPRS Cell Reselect Hysteresis Applied to C31 Criterion or not

GPRS&EGPRS

Parameters About Radio Resources

The value of this parameter should not be set to 0 dB. Otherwise, frequent cell handovers occur.