Reference Manual
Table Of Contents
- RBS 2206 Reference Manual
- Contents
- Preface
- Product Safety Requirements RBS 2000
- Environmental Capabilities
- Scope
- Terminology
- References
- Transport -40 C - +70 C
- Storage -25 C - +55 C
- Handling -40 C - +70 C
- Operation Indoor +5 C - +40 C
- Operation Outdoor -33 C - +40 C
- Operation Outdoor -33 C - +45 C
- Operation Outdoor -33 C - +55 C
- Operation Mast Mounted Equipment -33 C - +45 C
- Operation Mast Mounted Equipment -33 C - +55 C
- Radio Configurations, RBS 2206
- Product Data
- Unit Description, DXU-21
- Unit Description, dTRU
- Unit Decription, CDU-G and CDU-F
- Unit Description, CXU-10
- Unit Description, FCU-01
- Unit Description, DC-Filter 01
- Unit Description, PSU 1200 W
- Unit Description, ACCU/DCCU
- Unit Description, IDM
- Broadcast
- Common Control Channel Handling
- Physical Channel Handling
- Speech and Data Services
- Packet Data Services
- Call Control
- References
- Channel Activation
- Adaptive Frame Alignment
- Asynchronous Handover Detection
- RF Channel Release
- Deactivate SACCH
- Link Establish Indication
- Link Release Indication
- Link Establishment Request
- Link Release Request
- Transparent Message Transmission
- Transparent Message Reception
- SACCH Info Modify
- LAPDm
- Channel Reactivation
- Power Information
- GPRS, Physical Link Layer
- Base Station Power Control
- Channel Measurements
- Discontinuous Transmission
- Frequency Hopping
- Encryption
- Mode Modify
- Mobile Station Power Control
- Short Message Service
- Diversity Supervision
- Synchronization
- Radio Reception
- Radio Transmission
- Frequency Allocation Support
- Restart and Recovery
- Function Change
- Functionality Administration
- Operation and Maintenance Support
- References
- Concepts
- Buttons
- Change RU to Local Mode
- Change RU to Remote Mode
- Change RU to Remote Mode Cancel
- Change SW Power Boost Slave RU to Local Mode
- Loop Control
- RF Loop Test Supervision
- Calendar Time Request
- RSSI Temperature Compensation
- Max Cooling
- Fault Indicator
- BS Fault Indicator
- Operational Indicator
- Tx Not Enabled Indicator
- Local Mode Indicator
- External Alarms Indicator
- DC Disconnected Indicator
- Battery Mode Indicator
- Bat Disconnected Indicator
- AC Fault Indicator
- Test Result Indicators (not used)
- Local Mode in Progress
- Installation Data Handling
- Self Test and Supervision
- Diagnostics and Fault Handling
- Operation and Maintenance Terminal
- External Alarms
- Handling of Auxiliary Equipment
- Climate Protection
- EMC Capabilities
- Transmission Interface Handling G.703 2048 kbit/s
- Transmission Interface Handling DS1 1544 kbit/s
- Terrestrial Link Handling
- Channel Distribution Function
- Transport network O&M functions-DXX Support
- BTS Parameter Limitations
- Glossary
Radio Configurations, RBS 2206
• Filters, amplifies and distributes received signals to receivers
belonging to one BTS.
4.5.1 Isolation Values
The RF isolation between the antenna reference points within any
configuration is required to be at least 30 dB. See industry standard /
GSM:05.05/.
4.5.2 RX Description
The receiver system performance is configuration dependent.
Third-Order Intermodulation Products
Receiver sensitivity is reduced when a third-order intermodulation
product, generated by the radio transmitters in the RBS, is received at
the same ARFCN as the useful signal. This occurs when the distance in
frequency between two simultaneous transmitters is chosen in such a
way that a third-order intermodulation product is generated at the same
frequency as the operating frequency of one of the receivers in the RBS.
The receiver sensitivity reduction due to third-order intermodulation
products can be avoided with frequency planning.
No frequency planning is needed for intermodulation products of higher
than third-order.
4.6 Basic Configurations
The GSM 900 and GSM 1800 configurations meet the GSM
requirements, except where otherwise stated.
The capacity of a configuration is defined at the TX and RX antenna
reference points at the RBS border. There is an X close to every
reference point in the figures. The RBS border is not included in the
figures.
The equivalent output power with SW power boost (TX diversity)
configured is the original output power specified for the basic
configuration increased with typically 3 dB, if separate TX antennas are
used. The configurations that support SW power boost are listed in
Section 4.7.3 SW Power Boost Configurations with CDU-G on page 73.
Functional views of radio signal paths for various configurations are
shown in Figure 6 on page 36 upto and including Figure 24 on page 64.
Only components necessary to illustrate the configuration are shown.
In some configurations, the radio signal paths can differ depending on
where in the cabinet the basic configuration is used. The figures show
fully-equipped cabinets with two or three BTSs, that is two or three
basic configurations are shown in the same figure. These are different
physical implementations of the same basic configuration, not different
configurations. The second BTS is drawn with dotted lines to show
how an SCC in a fully-equipped cabinet is connected.
EN/LZT 720 0008 R1A
2001-06-26
35 (421)
© Ericsson Radio Systems AB
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