====== Wirnet™ iBTS hardware architecture ======

===== Wirnet iBTS products =====

Wirnet iBTS architecture is completely modular and upgradable to offer multiple configurations to cover different countries and areas around the world.

**This modularity brings the possibility to choose:** 

  * The backhaul network: Ethernet or GPRS/EDGE/HSPA/CDMA/LTE for different countries.
  * The Frequency of the unlicensed band (ISM) where to operate the LoRa LPWAN: 868MHz, 915MHz an 923MHz.
  * The number of channels to operate the LoRa LPWAN: 16 to 64. 
  * The antenna interface: single (omnidirectional), dual (space diversity or dual polarization) or tri (sectorization). 


**Three different types of modules are integrated in the Wirnet iBTS:** 

{{ :images:ibts_compact.jpg?nolink&300| Wirnet iBTS compact}}
  * CPU Module which includes the main following features: 
    * Power management of the Wirnet iBTS.
    * CPU.
    * Memories.
    * GNSS receiver (GPS). \\

//This module is mandatory.//

  * WAN Module which provides the backhaul functionality:  
    * Backup battery.
    * 4G modem available in 3 versions depending on the geographical area.
    * Dual WAN: Variant with 2 MC7304 modem.

//This module is optional.//

  * LoRa module, which can be prepared in 3 versions:   
    * 868 MHz: 863-873 MHz band. 
    * 915 MHz: 902-928 MHz band. 
    * 923 MHz: 915-928 MHz band. 
 
//A Wirnet iBTS integrates at least one LoRa module. Up to four LoRa module can be embedded.//

===== Wirnet iBTS modules =====

==== CPU module ====

=== CPU module architecture ===
{{ :images:cpumodule_image.png?nolink&250|}}
  * Based on ARM cortex A9 core processor
  * 8GBytes eMMC
  * 256MBytes DDRAM
  * Security: Embedded hardware secure core \\

=== CPU module hardware ===
{{ :images:modulecpu_photo.jpg?nolink&300| }}
  * Sensors: 
Light **<fc #ff0000>- 1</fc>** \\
Temperature 
  * ON/OFF Button **<fc #ff0000>- 2</fc>**

  * SMA RF connector for GPS antenna **<fc #ff0000>- 3</fc>**

  * USB connector type A **<fc #ff0000>- 4</fc>**

  * RJ45 Local Ethernet interface **<fc #ff0000>- 5</fc>**

  * Debug leds: 
Green **<fc #ff0000>- 6</fc>** \\
Amber **<fc #ff0000>- 8</fc>**

  * RJ45 Debug interface (serial debug interface) **<fc #ff0000>- 7</fc>**

  * Aux DC supply (11V-56V DC) Euroblock connector **<fc #ff0000>- 9</fc>**

  * RJ45 PoE connector: Ethernet + power supply from PoE injector **<fc #ff0000>-10</fc>**


==== WAN module ====
{{ :images:wan_module_image.png?nolink&250|}}
{{ :images:wanmodule_photo.png?nolink&100|}}
=== WAN module architecture ===
  * RF SMB connector for LTE antenna
  * USIM card holder
  * 4G Mini PCI Express module from Sierra Wireless
America: MC7354 \\
Europe and APAC: MC7304 \\
  * Backup battery


==== LoRa modules ====

=== LoRaLoc modem ===
{{ :images:loramodule_image.png?nolink&250|}}
== LoRaLoc modem architecture ==

  * 2 SX1301 (Semtech)
  * 16 LoRa received channels at dynamic data rate and 125 KHz bandwidth
  * 2 LoRa received channel at configurable bandwidth and fixed data rate
  * 2 (G)FSK demodulator
  * 1 FPGA
  * Geolocation
  * Sniffer: spectrum analyser

=== RF front-ends ===

== RF front-ends architecture ==

  * RF front-ends are used for signal power amplification and filtering
  * 4 RF front-end boards version
868 MHz (863-873MHz) \\
915 Mhz (902-928 MHz) \\
915 MHz 4 LOC (902-928 MHz) \\
923 MHz (915-928 MHz) \\

  * RF front with 2 duplicated TX and Rx paths 
RF path 1: RF1 SMB connector \\
RF path 2: RF2 SMB connector  \\