Product Info
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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TX62-W(-B/-C)/TX82-W Hardware Interface Description
3.3 Power Saving
109
t TX62-W_TX62-W-x_TX82-W_HID_v01.000 2021-05-19
Confidential / Preliminary
Page 85 of 154
3.3.3.2 eDRX (Extended DRX Configuration)
TX62/TX82 and the network may negotiate the use of eDRX (extended DRX) to reduce power
consumption, while being available for mobile terminating data and/or network originated pro-
cedures within a certain delay dependent on the network negotiated eDRX cycle value (see
also Section 3.3.1.2). If the network supports eDRX, the module monitors the paging messages
during a periodic Paging Time Window (PTW) configured for TX62/TX82.
The possible eDRX paging cycle length (PCL) ranges from 5.12s up to a maximum of
10485.76s (almost 3 hours).
The PTW length can be calculated using the following formula:
t_ptw = (PTW value +1)* 2560 ms
Figure 45 shows the eDRX timings, with the module listening to paging messages during a pag-
ing time window (PTW).
Figure 45: eDRX based paging and power saving in LTE Cat M1 and Cat NB1/2 networks
The eDRX timer can be configured with AT+CEDRXS (or AT^SEDRXS with a PTW timer
request) that negotiates the eDRX settings with the network. The dynamic parameters are
readable with AT+CEDRXRDP. For more information on these AT commands see [1].
Note 1: If SUSPEND mode is enabled in addition to SLEEP mode and eDRX settings, the mod-
ule is able to reduce its current consumption even further during the eDRX paging cycle (see
Figure 45). This optional so-called eDRX SUSPEND mode can be enabled with the AT^SCFG
command “Radio/Suspend,<suspendmode>”. However, the module will in this case not longer
be able to change into the regular 3GPP PSM SUSPEND mode.
Note 2: eDRX can be configured together with 3GPP PSM (AT+CPSMS) as it will not only
affect SLEEP mode (deep sleep) and eDRX SUSPEND mode, but also the 3GPP PSM SUS-
PEND mode - see Section 3.3.3.3.
PCL PCL
PTW
Default
Paging
Cycle
(DRX)
DRXSLEEPmode
eDRXSLEEPmode
(Dee psleep)
eDRXSLEE Pmode
(Deepsleep)
PCL Pag ingCycleLengtheDRX(5.12...10485 .76 seconds)
PTW PagingTimeWindow eDRX(2.56...40.96seconds)
DefaultPagingCycle Pag ingCycleDRX(1.28...10.24seconds)
P1 P2 P3 P4
PCL PCL
eDRXSLEEPmode
(Dee psle ep )
eDRXSLEEPmode
(Deepsleep)
eDRXSUSPENDmode eDRXSUSPENDmode
eDRXSUSPENDmode eDRXSUSPENDmode