Keynote SIGOS Product Guide

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Test Systems > Applications > Network Registration
Network Registration
Location Update
GPRS Attach
Network Registration
Fundamental for all mobile services!
Each mobile subscriber wants to be able
to communicate in the cellular telecommunications
network without having to
consider whether the network technology
is 2G, 2.5G or 3G.
This requires a successful mobile device
registration on the base station subsystem
(BSS). This is always the � rst step for
further communication.
Even if a call is not set up, the network
needs to be able to communicate with
the mobile handset to pinpoint where it
is. Hence, a mobile network is divided into
multiple cells (Base (Base Transceiver Transceiver Stations -
BTS). And a a group group of cells is considered a a
location area.
A A mobile device in in motion keeps the the
network network informed about changes in di� di� erent
location areas. If the handset moves
from a a cell in one location location area to a cell in
another location area, area, the mobile device
should perform a location area update to
inform the network about the new locatilocation of the mobile device.
Each Keynote SIGOS test case requires this
successful network registration.
Sample KPIs
Location Update Duration
Received Signal Code Power
RX Level
Service Type
GPRS Attach Duration
PDP Context Activation Duration
Location Update procedure is performed:
when the mobile device has been
switched o� and wants to become
active, or
when it is active but not involved in a
call, and it moves from one location area
to another, or
after a regular time interval because of
signal fade
Some aspects of the registration procedure:
make contact with the base station
the mobile device registers to the
network for access
to start a voice and/or data session
Network location registration is not
only necessary for each call, but
also for location based services like
“friends-� nder”!
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