Elevator Optic DAS HELIOS-S The HELIOS-S supports CDMA/WCDMA/LTE/LTE-A mobile communication service in an elevator. Currently commercially operated on SK Telecom Network.


  • Mobile communication common elevator optical dispersion system for Multi-Operator
  • Optical distribution system supporting CDMA, WCDMA, LTE, LTE-A integrated service
  • RF interface, integrated operation and service system for each mobile operator
  • Analog optic distributed use and mobile communication frequency full service
  • 700MHz disaster network, 800MHz CDMA & LTE, 900MHz LTE, 1.8GHz LTE, 2.1GHz WCDMA & LTE, 2.6GHz LTE & LTE-A service provided
  • Antenna distribution system to eliminate shaded areas and increase capacity in in-building elevators
  • Multi-operator integrated type for limited installation space and integrated optical line construction
  • Interworking with RF interface for each operator and gain balance function
HELIOS-S is a member of the cost-effective and highly scalable Mobile Access


  • Features

    • Supported frequencies

        -700 MHz: LTE, disaster network

        -800 MHz: CDMA, LTE

        -900 MHz: LTE

        -1.8 GHz: LTE, LTE-A

        -2.1 GHz: LTE, LTE-A, WCDMA

        -2.6 GHz: LTE, LTE-A

    • Optic Interface: Analog Optic (DL 1λ, UL 8λ)
    • Baseband Interface

        -CDMA, WCDMA: RF interface

        -LTE, LTE-A: RF interface

    • Multi-Operator, Multi-RAT, Multi-Band support
    • DL input AGC and Path control function for each mobile operator
    • Gain balance and over input/output ALC function for each operator
    • Provides remote monitoring function through IRCS server
  • Applications

    • Mobile Access (Elevator Inbuilding Optic Distributed Antenna) Service
    • CDMA, WCDMA, LTE & LTE-A Radio Frequency Service
    • Multi-band, Multi-Operator Support


    OAM and Maintainability

    • IRCS Protocol
    • Analog optic, frequency modulation Control & Management Protocol



Parameter HELIOS-S
Frequency 773 - 803 MHz, 869 - 894 MHz , 950 - 960 MHz, 1805 - 1880 MHz, 2110 - 2170 MHz, 2620 - 2670 MHz
Optical transmission distance (MU-OSU-RU) Below 2 km
Used Light wavelength (DL) 1 wavelength (UL) 8 wavelength
Input Power -1 - 19 dBm/Total
Output Power -4 dBm/Total
Connector MU RF port: N type Female (3) , Optic Port : FC/APC

Related Solution and Product

  • Product H-DAS (RF coaxial dispersion system) The H-DAS supports WCDMA/LTE service using an RF coaxial cable in an in-building.
  • Product AIR-28G (5G 28GHz In-Building RF Relay) The AIR-28G is a system that supports 5G NR mobile communication service by distributing 28GHz 5G signal through the air interface and distributing it within the in-building. Currently commercially operated on SK Telecom test network.