WCDMA Signaling
R&S
®
CMW-KG4xx/-KM4xx/-KS4xx
33
User Manual 1173.9657.02 ─ 11
Fig. 2-6: Connection states in reduced signaling mode
In addition to the main states shown in the table and the figure the instrument indicates
the following transitory states:
●
Switching Channels On/Off:
Displayed during transition from state "Reduced Signaling = Off" to "Reduced Sig-
naling = On" and vice versa
Additional transitions
The transitions in the figure above are not complete. The "Cell Off" state can be
reached from any state by turning off the cell signal (ON | OFF). Moreover, incidents
like a timeout or a loss of the radio link cause additional transitions.
2.2.9 Handover
The WCDMA signaling application supports a handover within the signaling applica-
tion, a handover to another signaling application (e.g. to the GSM signaling applica-
tion) , and also a handover to an external instrument (e.g. another R&S
CMW or an
R&S
CMU
200).
The following handover mechanisms are supported:
●
Intra RAT handover:
The R&S
CMW performs an RRC connection reconfiguration.
This mechanism is only used for connections within the WCDMA signaling applica-
tion. Supported are the CS connections with or without RX diversity as well as PS
connections. Intra RAT handover allows you to change the operating band and the
channels in a more efficient way than by direct reconfiguration. The connection is
not interrupted.
●
Inter RAT Handover:
The R&S
CMW performs a handover to another signaling application.
General Description
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