User's Manual
Table Of Contents
- toc
- RBS Product Description
- 1 Introduction
- 2 Product Overview
- 3 Dimensions
- 4 Space Requirements for MU
- 5 Space Requirements for RRU-N
- 6 Environment
- 7 Hardware Units RBS 2111 Second Generation
- 8 MU Connection Interfaces
- 9 RRU-N Connection Interfaces
- 10 Power System
- 11 Transmission
- 12 External Alarms
- 13 Standards, Regulations and Dependability
- RBS Product Description
- tables
- Table 1 The MU Dimensions
- Table 2 The MU Weight
- Table 3 The MU Colour
- Table 4 The RRU-N Dimensions
- Table 5 The RRU-N Weight
- Table 6 The RRU-N Colour
- Table 7 Times for Cold Startup and Restart
- Table 8 Normal Conditions During Outdoor Operation
- Table 9 Mechanical Conditions During Outdoor Operation
- Table 10 Heat Dissipation
- Table 11 Compliance Boundary Dimensions for General Public (GP)
- Table 12 Characteristics for the Typical Antenna
- Table 13 Total Power to the Antenna for Typical RBS Configuratio
- Table 14 Hardware Units
- Table 15 Standard Hardware Units
- Table 16 MU Connection Interfaces
- Table 17 RRU-N Connection Interfaces
- Table 18 Antenna Connection
- Table 19 DC Supply Voltage Requirements for MU and RRU-N
- Table 20 Fuse Recommendation for MU and RRU-N
- Table 21 Power Consumption
Ericsson Internal
DESCRIPTION 27 ( 46 )
/ XSNSIXI 198/1551-LZA 701 0001 Uen
CBC/XRX/M (Kai Lian) 2011-05-05 C
Prepared (also subject responsible if other) No.
Approved Checked Date Rev Reference
Table 15 Standard Hardware Units
A Remote Radio Unit-N (RRU-N)
B Sun shield
C Cover plate
D Connection interfaces
7.2.1 RRU-N
The Radio Remote Unit-N (RRU-N) has the following main functions:
• Transmits and receives two radio carriers
• Two receivers per TRX for RX diversity
• The RRU-Ns are installed with the internal SPD.
The RRU supports GMSK, 8-PSK, 16-QAM and 32-QAM, as well as Voice
services over Adaptive Multi-user channels on One Slot (VAMOS).
7.2.2 Cover Plate
The cover plate protects the connections for optical fibers and power cables.
7.2.3 Connection Interfaces
The connection interfaces for the RRU-N are described in Page 36.
7.3 Optical Fiber
An optical fiber makes the connection between the MU and the RRU-N. There
are four different lengths available for the optical cables: 20 m, 50 m, 100 m
and 500 m. The optical fiber must have zero-dispersion in the wavelength
range 1310 nm.
The maximum supporting length of the optical fiber cable is 3 km, which can be
built by the user according to the cable specifications:
• The cable contains two strain-relieved fibers. The fibers are well protected
at the fan-out end.
• It is recommended to use swell-able tape, or another similar solution. It is
not recommended to use the filling jelly.
• The strength member can be fiber reinforced plastic (FRP) rod or Aramide
yarn to fulfill the mechanical requirements.
• The maximum outer diameter is 10 mm.
• Mechanical Requirements