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
Transmission Interface Handling DS1 1544 kbit/s
UAST ceases
UAST ceases when available state is declared. Each direction (upstream
and downstream) is supervised independently of the other.
48.3.4 Supervision of Transmission Quality
The function is initiated when the AO DP is enabled from the BSC.
The configuration of quality supervision can only be performed when
the AO DP is in state “Disable”. The reporting to the BSC is performed
when the AO DP is in state “Enable”.
Quality supervision consists of six supervision functions:
•
BFF (Bit Fault Frequency)
•
DF (Disturbance Frequency)
•
SF (Slip Frequency)
•
ES (Errored Seconds)
•
SES (Severely Errored Seconds)
•
UAS (Unavailable Seconds)
Bit Fault Frequency supervision
The number of bit errors in the received 1544 kbit/s signal is used to
establish an error rate. The CRC-6 sequence is used to obtain the
number of bit errors. In this method, the distribution of errors in the
time is considered. Bursts of faults decrease the number of CRC errors
detected compared to what would have been detected with an equal
distribution of faults in time.
The probability of bit faults appearing in bursts is greater than the
probability of detecting single isolated bit faults. This probability
increases with the real bit error rate, and with the length of the time
period over which the real bit fault frequency is calculated.
In the used method, the number of CRC-6 errors is counted during the
base interval. Then, a translation to bit fault frequency is performed.
The bit fault frequency is supervised and reported as the mean bit error
ratio in ppm (parts per million) during the BI (Base Interval).
Disturbance Frequency supervision
This supervision monitors detected fault situations which are regarded
as disturbances upon detection. Upon detection the following events are
regarded as disturbances:
• LOF (Loss Of Frame) alignment
• LOS (Loss Of Signal)
• AIS (Alarm Indication Signal)
• RAI (Remote Alarm Indication) received from remote end
EN/LZT 720 0008 R1A
2001-06-26
367 (421)
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