Copyright 2019 -- Custom text here

All Active DAS installations from Radio Network Solutions (RNS) will now feature the Active POI. This allows for far greater flexibility in design, implementation, expansion and future operator sharing.

Active DAS1

The APOI is an Active Point of Interface used to connect various DAS feeders like BTSs (Base Transceiver Stations), Small Cells, or Signal booster to the DAS Optical Master Unit (OMU).

Up to 16 different services can be connected to each APOI shelf. Each APOI shelf consists of 8 plug in BTS interface modules (BTSI). Each BTSI covers one single band and supports up to 2 BTS ports. The supported services are: 800, 900, 1800, 2100, 2600 plus 700, 700APT, SMR 800 (Sprint), Cellular 850, 1900 AWS, 2300 FDD and 2300TDD.

Each BTSI can be either un-duplexed (separate ports for TX/RX) or duplexed (single port for TX/RX) configuration, thus allowing different connections to different BTSs.

The two output ports of each Band Module can be either connected separately to the DAS OMU or can be internally combined together and then connected to an external passive POI combining network box. The output of this combining network box is feeding the OMU.

The APOI has an RF power control and monitor algorithm that guarantees the transmit RF power is precisely matched to each operators budget in multi-operator scenarios. This control loop prevents each operator from exceeding the power allocated to him.

The APOI has a patented Smart ALC control loop that enables auto calibration per each APOI port. The Smart ALC algorithm will cause the APOI to provide constant pilot signals in all traffic scenarios while maintaining the output power levels required. The APOI also enables manual calibration per port when required by the operators.

Active DAS 2

Up to 5 APOI shelves can be cascaded together via IP switch and display card. The LCD will display the APOI shelf number.

The maximum input power from the BTS to the APOI is 30dBm. When the APOI is connected directly to Macro BTSs, an external high power attenuator shelf can be provided by Cobham Wireless which decreases the BTS input power to 30dBm with focus on excellent PIM performance.

Remote management can be done via wireless modem or Ethernet.  The modem types available are GSM, WCDMA or CDMA 1x. The system can be monitored and controlled via the active network management software.

Key features include:

  • Up to 16 BTS ports per APOI shelf, supported by 8 BTS Interface modules (BTSI)
  • Up to of 80 BTS ports supported by 5 cascaded APOI shelves
  • Smart ALC algorithm (patented) enables auto calibration per port or Manual calibration per port
  • Multiple operator and multiple sector support via single APOI shelf
  • Compact 3U rack
  • Internal pilot tones per each band enable to test the DAS installation and verify all DAS RF connections 
  • Web based management, remote management thru wireless modem
  • Simple integration to AEM or any other 3rd party NOC via SNMP traps.


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Maintained by Dapple Communication

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