User Manual

Power management
11-12 Confidential - For internal use 99-137719-D
11.5 Power management
The BGAN XL Radio Module is designed to save as much power as possible for two
main reasons:
1. Save battery power, relevant for battery powered (portable) products.
2. To reduce the heat dissipation (all products) in the terminal.
When in service or operating mode the BGAN XL Radio Module operates with an
autonomous power management scheme which is designed to save as much power as
possible at all times. The various sub-modules in the BGAN XL Radio Module will be
powered down whenever possible while respecting functional requirements given by
the actual operational mode.
The BGAN XL Radio Module supports sleep mode operation
1
as defined by the SDM
(see [18]). To avoid confusion among the operational modes defined in section 6.1.1 on
page 6-2 this state will be referred to as SDM sleep further on. If activated by the
integrator in the configuration system the BGAN XL Radio Module will enter this power
management state when it is in operating iai2 mode and is registered to the BGAN
network if no PS or CS connection is established.
In certain applications it may be convenient for the integrator to instrument the
internal power management schemes to immediately save power while maintaining
the ability to resume to normal operation as soon as possible. For this purpose the
BGAN XL Radio Module supports a special message on the control interface which will
bring the BGAN XL Radio Module into a low-power state designated suspend.
Detailed information on SDM sleep and suspend can be found the following sub-
sections.
11.5.1 SDM sleep
Support of SDM sleep is enabled using the configuration parameter described in
section 6.4.5 on page 6-16.
1. Not applicable to all terminal classes; see the SDM [18].