Data Sheet

SARA-R4/N4 series - Data Sheet
UBX-16024152 - R16 Functional description Page 9 of 39
1.6 Supported features
Table 3 lists some of the main features supported by SARA-R4/N4 series modules. For more details,
see the SARA-R4/N4 series System Integration Manual [2] and the SARA-R4/N4 series AT Commands
Manual [1].
Feature
Description
Network Indication
GPIO configured to indicate the network status: registered home network, registered roaming,
data call enabled, no service. The feature can be enabled through the +UGPIOC AT command.
Antenna Detection
The ANT_DET pin provides antenna presence detection capability, evaluating the resistance from
the ANT pin to GND by means of an external antenna detection circuit implemented on the
application board.
The antenna supervisor (i.e. antenna detection) feature can be enabled through the +UANTR AT
command.
Embedded TCP and UDP
stack
Embedded TCP/IP and UDP/IP stack including direct link mode for TCP and UDP sockets.
Sockets can be set in Direct Link mode to establish a transparent end-to-end communication
with an already connected TCP or UDP socket via the serial interface.
FTP
File Transfer Protocol functionality is supported via AT commands.
HTTP
Hyper-Text Transfer Protocol functionality is supported via AT commands.
Embedded SSL/TLS
9
With the support of X.509 certificates, embedded SSL/TLS provides server and client
authentication, data encryption, data signature and enables TCP/IP applications to communicate
over a secured and trusted connection. The feature can be configured and enabled by the
+USECMNG and +USECPRF AT commands.
MQTT
10
Message Queuing Telemetry Transport is an ISO standard publish-subscribe messaging protocol
designed for lightweight M2M communications over TCP. MQTT allows clients to communicate
one-to-one, one-to-many and many-to-one over a long-lived outgoing TCP connection.
BIP
10
Bearer Independent Protocol for Over-the-Air SIM provisioning.
Dual stack IPv4/IPv6
Capability to move between IPv4 and dual stack network infrastructures.
IPv4 and IPv6 addresses can be used.
Firmware update Over AT
commands (FOAT)
Firmware module update over AT command interface.
The feature can be enabled and configured through the +UFWUPD AT command.
Firmware update Over
The Air (uFOTA)
u-blox firmware module update over the LTE air interface client/server solution using LWM2M.
GNSS via modem
10
Full access to u-blox positioning chips and modules is available through DDC (I
2
C) interface.
This means that from any host processor, a single serial port can control the SARA-R4/N4 series
cellular module and the u-blox positioning chip or module.
Power Saving Mode (PSM)
The Power Saving Mode (PSM) feature, defined in 3GPP Rel.13, allows further reduction of the
module current consumption maximizing the amount of time a device can remain in PSM low
power deep sleep mode during periods of data inactivity. It can be activated and configured by the
+CPSMS AT command.
e-I-DRX
11
Extended Idle mode DRX, based on 3GPP Rel.13, reduces the amount of signaling overhead
decreasing the frequency of scheduled measurements and/or transmissions performed by the
module in idle mode. This in turn leads to a reduction in the module power consumption while
maintaining a perpetual connection with the base station.
Coverage Enhancements
Mode A
Coverage Enhancements Mode A, introduced in 3GPP Rel.13, is used to improve cell signal
penetration.
Coverage Enhancements
Mode B
12
Coverage Enhancements Mode B, introduced in 3GPP Rel.13, is used to further improve cell signal
penetration.
Table 3: Some of the main features supported by SARA-R4/N4 series modules
9
Not supported by “00” product version
10
Not supported by “00” and “01” product versions
11
The feature is disabled on “00” and “01” product versions due to network readiness
12
Not supported by “00”, “01”, “02” and “52” product versions