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oDAS RADIUS

RADIUS

oDAS RADIUS application area

Outdoor Distributed Antenna System RADIUS is intended to provide GSM-R, LTE, UMTS, and GSM coverage along railways, roads and rural areas. The system allows increasing network capacity efficiency and reducing infrastructure cost (CAPEX/OPEX).

oDAS RADIUS is designed for integration with GSM-R, LTE FDD, UMTS, and GSM networks, and provides serial distribution of up to 4 sectors (frequency bands) of a base station (BTS) to cover long-distance territories such as roads and railways.

oDAS RADIUS modules

  1. FSC is designed to convert several (from one to four) GSM-R, LTE, UMTS, and GSM carriers from BTSs into the oDAS system signals
  2. FSR is designed to receive and convert two (or four) carriers from MWL or fiber optic to cellular signals providing remote sectors similar to BTS
  3. RM provides the operation of integrated microwave link
  4. SM provides additional base station sectors at a remote site equipped with FSR module

oDAS RADIUS features

  • reducing construction costs for GSM-R, 4G (LTE), 3G (UMTS), and 2G (GSM) networks by 30 % at least (depending on system configuration)
  • reducing operation costs: power consumption of the system is up to 5 times lower than that of typical base station
  • increasing the coverage of one base station up to 60 km
  • combined intersystem data transfer channels: fiber optic and integrated microwave link (MWL):
    • the MWL operating distance is up to 20 km (within LOS)
    • the fiber optic operating distance is up to 40 km (out of LOS)
  • supporting Internet of Things (IoT) services: In-Band NB-IoT
  • monitoring the operation of system modules via integrated remote control system

oDAS RADIUS configuration

oDAS RADIUS configuration

RADIUS FSC is installed at the site with a base station and receives from BTS (RRH or RSU) the GSM-R, GSM, UMTS, and LTE carriers, converts them to MWL or to fiber optic channel and transmits over a distance.

RADIUS FSR is installed at the remote site and receives and converts two carriers (optionally, up to 4) from MWL or fiber optic to cellular signals providing remote sectors similar to BTS (one carrier in each sector). In addition, it amplifies and transmits the received signal further along the line (using fiber optic or integrated MWL) to the next site equipped with RADIUS FSR.

SM module is designed to generate additional sectors at the site equipped with FSR, and to provide MIMO technology as well.

Схема

 

ParameterValue
Retrans­mission channel type — micro­wave link (MWL)
— fiber optic (FO)
Frequency band, MHz:
— GSM (GSM-R) 873—915 — UL
918—960 — DL
— UMTS UMTS Band 1:
1920—1980 — UL
2110—2170 — DL
— LTE LTE Band 3:
1710—1785 — UL
1805—1880 — DL
— micro­wave link 6425—7125
Transmitters output power, dBm:
— GSM(GSM-R)/LTE/UMTS (per carrier) 40—43 (max power)
— micro­wave link (total) 23 (configurable)
Main combina­tions of retrans­mitted GSM (GSM-R)/ LTE/ UMTS carriers — one LTE 20 carrier
— up to two LTE 10 carriers (one MIMO LTE 10 carrier)
— up to four GSM (GSM-R) / LTE 5/ UMTS 5/ NB-IoT 180 carriers (two MIMO LTE 5 carriers)
Number of carriers for one GSM (GSM-R)/ UMTS/ LTE trans­ceiver in FSR unit 1
Number of GSM (GSM-R)/LTE/UMTS trans­ceivers per FSR unit 2 (4 optionally — 2 additional external trans­ceivers SM modules can be connected for UMTS/LTE only)
Number of FSC inputs/ outputs for receipt of GSM (GSM-R)/ LTE/ UMTS carriers from BTS 4 (various combinations of UMTS/ LTE/ GSM (GSM-R) are available optionally — one carrier per each input/ output)
Optical trans­ceivers connector type SFP+
Number of optical connectors in FSR/FSC units 2
Optical connection types serial connection, parallel connection
Number of hops (MWL) — up to 2 (LTE, LTE/ UMTS, LTE/ UMTS/ GSM)
— up to 3 (GSM (GSM-R), UMTS)
Number of hops (fiber optic) 8 and more (depends on the distance between FSC and last FSR in a oDAS chain)
Parasitic noise level intro­duced by the system to integrated MWL, dB ≤ 2.5 (for maximum number of hops)
Operating tempera­ture range, °С minus 40…+55
Power consumption (with two internal trans­ceivers in FSR unit with 40 dBm output power each), W — до 160 (FSR + 2 RM)
— до 250 (FSR + 2RM + 2SM)
— до 80 (FSC +1 RM)
— до 120 (FSR)
— до 200 (FSR + 2 SM)
— до 45 (FSC)
Housing protection rating  IP 65
Dimensions (WхDхH), mm:
— FSR 352x291x197
— FSC 334х291х197
— RM 213х128х54
— SM 220х170х72
Power supply ~220/110 VAC or -48 VDC (optionally)
Weight (with two internal transceivers in FSR unit without fasteners), kg:
— FSR 11,5
— FSC 2,3
— RM 13,5
— SM 1,7
Certification   ETSI TS 125 106
ETSI TS 136 106
ETSI TS 145 005
ITU-R F.384-11 (03/2012)
Control and monitoring  — local (Ethernet, Wi-Fi)
— remote (integrated GSM/ UMTS/ LTE modem)

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