Filter Parameter A7

Filter Parameter A7

This parameter is used for configuring the filter for the rapidly dropped receive level. Together with filter parameter B, it is one of the nine filter parameters. The corresponding formula is as follows (in the program, the value of A1 to A8 can be obtained by subtracting 10 from the configured value, and B is the negative value of the configured value):

C1(nt) = A1 x C(nt) + A2 x C(nt-t) + A3 x C(nt-2t) +…+ A8 x C(nt-7t). Where, C(nt) is the uplink RX_Level of the serving cell in the MR received at the time of nt. If C1(nt) is smaller than B, and if C(nt) is below the Edge HO RX_LEV Thrsh., then the signal level is considered to be rapid dropping.

Filter parameters A1 to A8 may be smaller than or equal to 10. Parameters A1 to A8 correspond to a1 to a8 in the program, and ai = Ai-10 (i = 1-8). Therefore, among a1 to a8 in the program, there must be values smaller than or equal to 0.

For example, if the receive level drops rapidly in a granularity period, you need to set A3 to A8 to 10, A1 to 0, and A2 to 20. In this case, C1(nt) = a1 x C (nt) + a2 x C(nt-t) = 10C(nt-t)-10C(nt). To trigger a rapid level drop handover, you should set C1(nt) to a value smaller than B. and then the fast level drop appears in a MR period. The formula reflects the rapid drop of the cell level in an MR.

You can configure the filter to define the number of MRs used and the extent to which the level drops. However, the setting of this parameter is complicated.

[0,20]

10

None

-

None

Filter parameters A1 to A8 must meet the following requirement: A1 + A2 + A3 + A4 + A5 + A6 + A7 + A8 = 80. The settings of A1 to A8 reflect the number of MRs in which the receive level drops rapidly.

10

Filter Parameter B

Handover

Parameters About Radio Resources

This parameter is available only when HO Control Switch is set to HO Algorithm I. This parameter is invalid when the HO Control Switch is set to HO Algorithm II.