Rohde & Schwarz 1094.0006.50, Руководство по эксплуатации

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Windows
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Application CTSgo CTS-K6
1079.2001.01 46 E-3
7.3.1 Network
This command opens the Configure Network dialog window. In this window, the measurements can be
adapted to the network of your mobile. The base station power at which the mobile performs a location
update is also set here.
After switching on, the mobile searches in all channels for a base-station carrier, also called C0 carrier.
A component of the C0 carrier is the broadcast channel, also called BCCH. The mobile synchronizes to
this carrier and compares the decoded data from the base station with the data on the SIM card. It then
registers with the base station. This registration is called location update. If the output power is too low,
your mobile may not register with the base station simulated by the CTS. Changing from GSM 900 to
GSM 1800 or GSM 1900 may cause PCL steps 16 to 19 to be cleared from the test set and replaced
by PCL step 15. In this case, a warning is output by CTSgo.
Dualband-Mobiles are able to use channels of the GSM 900 band as well as channels of the GSM
1800 band. You decide the primary network and the handover network. The primary network is the
one, which is used for the BCCH generation. This means, that the network is used for location update
and the call process. A channel change from one band to another band is called dualband handover.
Check the box “Handovercheck“, if you want the testset to use the signalisation for checking the
dualband handover capabilities of your mobile. You have to check the box “BCCH remains after
handover“, if your mobile needs a remaining BCCH signal in the primary network, when changing to
the secondary band. A missing BCCH signal will result in a higher frequency error after dualband
handover. There are some mobiles, which have the capability to handover between GSM 900 and
GSM 1900. Due to the geographical distance, there is no existing GSM 900 / 1900 dualband handover
implemented in the network. On some mobile it can be used for test purposes. The method is the
same, as it is for GSM 900 / 1800 dualband handover.
Fig.: Configure Network dialog window
Fig.: Warning of network configuration