4G module

The 4G module enables the connectivity to high speed LTE, HSPA+, WCDMA cellular networks in order to make possible the creation of the next level of worldwide compatible projects inside the new "Internet of Things" era.

This communication module is specially oriented to work with Internet servers, implementing internally several application layer protocols, which make easier to send the information to the cloud. We can make HTTP navigation, downloading and uploading content to a web server. We can also set secure connections using SSL certificates and setting TCP/IP private sockets. In the same way, the FTP protocol is also available which is really useful when your application requires handling files.

The 4G module offers the maximum performance of the 4G network as it uses 2 different antennas (normal + diversity) for reception (MIMO DL 2x2), choosing the best received signal at any time and getting a maximum download speed of 100 Mbps.

We chose the LE910 chipset family from Telit as it comprises the most complete 4G/LTE set of variants released up to date. It counts with many different models, each one specifically designed for one market but all of them with the same footprint:

• LE910-EU (Europe/Brazil): CE, GCF, ANATEL
• LE910-NAG (US / Canada): FCC, IC, PTCRB, AT&T approved

Model: LE910 (Telit)
Versions:

• Europe/Brazil (new v2 in November 2019)
• America (new v2 in April 2019)

Europe/Brazil version:

• 2G: 900/1800 MHz
• WCDMA: 900/2100 MHz
• LTE: 800/900/1800/2100/2600 MHz

America version:

• WCDMA: 850/1900 MHz
• LTE: 700/850/1700/1900 MHz

LTE (downlink):

• Europe/Brazil version up to 100 Mbps
• America version up to 100 Mbps

LTE (uplink): up to 50 Mbps
TX power:

• Europe/Brazil:

  Class 4 (2 W, 33 dBm) @ GSM 900

  Class 1 (1 W, 30 dBm) @ GSM 1800

  Class E2 (0.5 W, 27 dBm) @ EDGE 900

  Class E2 (0.4 W, 26 dBm) @ EDGE 1800

  Class 3 (0.25 W, 24 dBm) @ UMTS

  Class 3 (0.2 W, 23 dBm) @ LTE

• America:

  Class E2 (0.5 W, 27 dBm) @ EDGE 900

  Class E2 (0.4 W, 26 dBm) @ EDGE 1800

  Class 3 (0.25 W, 24 dBm) @ UMTS

  Class 3 (0.2 W, 23 dBm) @ LTE

Antenna connector:

• U.FL for cellular main antenna
• U.FL for cellular diversity antenna

External antennas: +5 dBi

This module can carry out the following tasks:

• Sending/Receiving SMS
• Multisocket up to 6 TCP/IP and UDP/IP clients
• TCP/IP server
• TCP SSL
• HTTP service
• FTP service (downloading and uploading files)
• Sending/receiving email (SMTP/POP3)

Certifications:

• LE910-EUG (Europe / Brazil): CE, GCF, ANATEL
• LE910-NAG (US / Canada): FCC, IC, PTCRB, AT&T approved
• LE910-SKG (South Korea): KCC, SK Telecom approved
• LE910-JN V2 / LE910-JK V2 (Japan): NTT DoCoMo, KDDi

This model uses the UART1 at a baudrate of 115200 bps to communicate with the microcontroller.

Related API libraries: Wasp4G.h, Wasp4G.cpp