NOKIA AHDB RRU (Radio Remote Unit) is a key component in Nokia communication equipment and is mainly used in the base station part of the wireless communication network. RRU is usually used together with BBU (Building Baseband Unit, baseband processing unit) to form the wireless part of the base station.
- AHDB can be used in distributed sites with up to 23 km fiber length to the system module
- LTE1103: Load based Power Saving for multi-layer networks needs to be enabled to use Load based Power Saving for multi-layer networks.
- LTE1203: Load based Power Saving with Tx path switching off needs to be enabled to use Load based Power Saving with Tx path switching off.
- LTE2508: BTS Embedded Power Meter for Energy Effciency Monitoringneeds to be enabled to use BTS Embedded Power Meter for Energy Efficiency Monitoring.
- LTE2541: Nokia CPRI RRH/RFM chaining Provides support for chaining.
- LTE3036: Micro DTXextension needs to be enabled to use Micro DTX extension.
Quick Spec
AHDB Interfaces
Interface
| Label on the HW
| Number ofinterfaces
| Connector type
| Additional info
|
Power Connector
| DC IN
| 1 | Low power circular
| APPA. APPB. APPC
|
Antenna connector
| ANT
| 4 | 4.3-10
| - |
Remote Electrical Tilt
| RET
| 1 | 8-pin circular
| RS-485
|
Optical interface
| SFP
| 2 | SFP+
| 9.8 Gbps. CPRl: Nokia lP seal
|
External Alarm Connection
| EAC
| 1 | MDR26
| 4 alarm inputs and l control output
|
Grounding
| GND
| 1 | M8 or dual M5 screws
| - |
Antenna Line Devices (ALDs) support
Antenna Line Devices (ALDs) support
| Value
|
AISG
| RET: AISG 2.0/3.0
|
Proprietary AlSG1.1
| NO
|
CWA (for non-AlSG installations)
| NO
|
Voltage
| RET: 14.5 V
|
Power per port
| 45 W
|
Funtional Block Diagram
AHDB electrical specifications
Property
| Value
|
Nominal supply voltage
| -48.0 VDC
|
Nominal input voltage range
| -40.5 V DC to -57.0 VDC
|
Extended input voltage range
| 36.0 V DC to -40.5 VDC, -57.0 V DC to -60.0 VDC
|
Note:The minimum start-up voltage is -40.5 V Dc, lf the input voltage is below/beyond the extended limits, the unit might shutdown.Power consumption
Typical power consumption [W, for 48VDc input, at 25'c, representative of typical product performance under the sameconditions (Hw variant, SW version, configuration, environment, and so on) with +/- 10% margin. Average = (6h low houlload,10h medium hour load and 8h busy hour load)/ 24h
Configurations explained on examples.
- GSM/WCDMA: 2/212 =three sectors, two carriers/TRXs per sector
- LTE:
- 2/2/2 2Tx=three sectors, two carriers per sector, 2Tx per carrier
- 1+1/1+1/1+1 4Tx = three dual-band sectors, one carrier per sector per band, 4Tx per carrier
Some radio units are capable of providing only one sector coverage. Then the power values in the table considerdeployment of three radio units.
Table: AHDB power consumption in LTE mode
Configuration
| Output power percarrier [W]
| Power consumption ETSI 202706 average PRRH, statie | Power consumption ETSI202706 busy hour load PBRRH, statie | Power consumption 100% RF power load P100% RRH |
1/1/1 2Tx
| 2x80
| 805
| 990
| 1470
|
1/1/1 2Tx
| 2x60
| 737
| 882
| 1223
|
1/1/1 2Tx
| 2x40
| 656
| 755
| 968
|
1/1/1 2Tx
| 2x30
| 616
| 695
| 852
|
1/1/1 2Tx
| 2x20
| 573
| 628
| 735
|
Dimensions and weigh
Property
| Value
| Dimensions orientation
|
Height
| Core RRH: 336 mm(13.25 in.)
With mounting brackets: 428 mm(16.87 in.)
| 
|
Width
| 309 mm (12.17 in.)
|
Depth
| Core RRH: 125 mm(4.92 in.)
With mounting brackets: 149 mm (5.86 in.)
|
Weight
| max.12.8 kg(28.2 1b)
|
Volume
| Without ID Cover: 12.2 1
|
Related optionalitems
APAA AirScale AC-DC Power Unit 760W(473936A).
AMAA AirScale 2 casing for RRH aux-units (474141A):.
APAC AirScale AC PDU 1 to 3 (474142A)
APAA AirScale AC-DC Power Unit 760W (473936A)-maximum three units per one
AMAAAMGC AirScale 2 cover 300 x101-125(474269A)
AMBF AirScale book mount kit 126-150(474278A)
FPKA Flexi Pole Mounting Kit (30-120 mm)(471649A)
FPKC Flexi Pole Mounting Kit (60-300 mm)(472821A)
AMPA Pole Mounting Kit(30-120 mm)(473879A)AMFA AirScale 2 FPKx fixing adapter(474289A)
AMFN AirScale 2 casing adapter RRH 300(474664A)
AMRA AirScale one clip bracket 51-125(474580A)
AMRC AirScale one clip rail 600 mm(474583A)
ASAA AirScale 2 MDR26-open EAC cable 5 m(474288A)
APPA AirScale 2 26A DC plug 3.3-10 mm (474281A)
APPB AirScale 2 55A DC plug 3.3-10 mm (474282A)
APPC AirScale 2 55A DC plug 10-16 mm (474283A)Get More Information
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