Specifications
Table Of Contents
- Contents
- Tables
- Figures
- 1 Introduction
- 2 Interface Characteristics
- 2.1 Application Interface
- 2.2 RF Antenna Interface
- 2.3 GNSS Interface
- 2.4 Sample Application
- 3 Operating Characteristics
- 3.1 Operating Modes
- 3.2 Power Up/Power Down Scenarios
- 3.3 Power Saving
- 3.4 Power Supply
- 3.5 Operating Temperatures
- 3.6 Electrostatic Discharge
- 3.7 Blocking against RF on Interface Lines
- 3.8 Reliability Characteristics
- 4 Mechanical Dimensions, Mounting and Packaging
- 5 Regulatory and Type Approval Information
- 6 Document Information
- 7 Appendix
Cinterion
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EXS62-W/EXS82-W Hardware Interface Description
3.3 Power Saving
102
t EXS62-W_EXS82-W_HID_v01.200ee 2022-09-02
Public/ Released
Page 78 of 144
3.3.2 Power Saving while Attached to GSM Networks (EXS82-W only)
Power saving while attached to GSM networks is based on standard DRX values defined for
the network (see Section 3.3.2.1).
Apart from network based power saving it is possible to use the AT command AT^SCFG="Ra-
dio/OutputPowerReduction" for the module in (E)GPRS multislot scenarios to reduce its output
power according to 3GPP 45.005. By default a maximum power reduction is enabled. For de-
tails on this AT command see [1].
3.3.2.1 DRX (Standard Configuration)
The power saving possibilities while attached to a GSM network depend on the paging timing
cycle of the base station. The duration of a power saving interval can be calculated using the
following formula:
t = 4.615 ms (TDMA frame duration) * 51 (number of frames) * DRX value.
DRX (Discontinuous Reception) is a value from 2 to 9, resulting in paging intervals between
0.47 and 2.12 seconds. The DRX value of the base station is assigned by the GSM network
operator.
In the pauses between listening to paging messages, the module resumes power saving, i.e.,
SLEEP mode, as shown in Figure 43.
Figure 43: DRX based paging and power saving (SLEEP) in GSM networks
The varying pauses explain the different potential for power saving during SLEEP mode. The
longer the pause the less power is consumed.
Generally, power saving depends on the module’s application scenario and may differ from the
above mentioned normal operation. The power saving interval may be shorter than 0.47 sec-
onds or longer than 2.12 seconds.
3.3.2.2 eDRX (Extended DRX Configuration)
Note: eDRX support for GSM networks is disabled. eDRX support is only available for LTE Cat
M1 and Cat NB1/2 networks (see Section 3.3.3.2).
Paging Power saving (SLEEP)
DRX paging cycle
0.47-2.12 seconds
Paging Power saving (SLEEP) Paging Power saving (SLEEP) Paging
DRX paging cycle DRX paging cycle
0.47-2.12 seconds 0.47-2.12 seconds