Rohde & Schwarz 1094.0006.50, Operating Manual

Page: 153 / 374

CTS55 Description of the Menus
1094.0006.55 9.45 E-7
9.9.13.1 Handover Network
HANDOVER NETWORK represents the target network to which dual-band handover shall be done.
This selection is necessary because there is no criteria on distinguishing between the networks
GSM1800 and GSM1900.
0 124
512 885
955 975 1023
GSM1800
GSM900
R-GSM E-GSM
810
GSM1900
512
GSM1800 DUAL BAND HANDOVER
GSM1900 DUAL BAND HANDOVER
The diagram above shows the difference between a GSM1800 and GSM1900 dual-band handover.
Moreover, the overlap in channel numbering (512 to 810) of these networks. Specifying the desired
handover network before the handover takes place removes any ambiguity.
MMI DISPLAY NAMES Handover Options
GSM850 GSM850 Channel Availability Only
GSM850/GSM1900 GSM850and GSM1900Channel Availability – with GSM850
being the originating network
GSM900 GSM900 Channel Availability Only
GSM900/GSM1800 GSM900 and GSM1800 Channel Availability – with GSM900
being the originating network
GSM900/GSM1900 GSM900 and GSM1900 Channel Availability – with GSM900
being the originating network
GSM1800 GSM1800 Channel Availability Only
GSM1800/GSM900 GSM1800 and GSM900 Channel Availability – with GSM1800
being the originating network
GSM1900 GSM1900 Channel Availability Only
GSM1900/GSM850 GSM1900 and GSM850 Channel Availability – with GSM1900
being the originating network
GSM1900/GSM900 GSM1900 and GSM900 Channel Availability – with GSM1900
being the originating network
MULTI This does not fix the CTS to just handover between GSM900
and GSM1800 or GSM900 and GSM1900. The CTS will use
information upon location update to determine if the MS is
dual band.
If the MS indicates a dual band mobile then
GSM900/GSM1800 handovers will be available if required. If
the MS does not indicate DBHO, then GSM900/GSM1900
handovers are available.
9.9.13.2 Handover Check
If the current network selection is GSM900/1800 then the HANDOVER CHECK softkey is available. If
HANDOVER_CHECK is set to SLOW then additional signalling is requested from the MS otherwise it is
not requested.