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
Channel Measurements
The RBS measures BER (Bit Error Rate) and the signal strength over
each active channel per reporting period. All SACCH frames are
included in the measurements.
The reporting periods are different for different TNs, and for different
channels, and are the same as for the MS, defined in /GSM 05.08:8.4/.
The measurements of signal strength are referred to the RX reference
point. An R.M.S. (Root Mean Square) value is created for each burst.
Then, the logarithm of this value, expressed in dBm, is averaged over
the reporting period. The mapping of this average and RXLEV is as
defined in /GSM 05.08:8.1.4/.
The signal quality measurements are sampled per reporting period.
The mapping between BER and RXQUAL is as defined in /GSM
05.08:8.2.4/.
RBS calculates RXLEV_FULL, RXLEV_SUB, RXQUAL_FULL and
RXQUAL_SUB as an average of the frames as defined in the following
table:
Table 117 Frame calculation
Channel
Combination
RXQUAL_FULL,
RXLEV_FULL
RXQUAL_SUB, RXLEV_SUB
(i), (viii), (ix)
All TCH and SACCH frames
(96 TCH, 4 SACCH)
8 SID + 4 SACCH
(x) Channel measurements are unspecified.
TCH/S: 8 SID + 4 SACCH(ii) All TCH and SACCH frames
(48 TCH, 4 SACCH)
TCH/Data: 10 SID + 4 SACCH
(iii) TCH/S: 8 SID + 4 SACCHAll TCH and SACCH frames
(96 TCH, 4 SACCH)
TCH/Data: 10 SID + 4 SACCH
(v), (vii) All SDCCH and SACCH
frames (8 SDCCH, 4 SACCH)
Same frames as for RXLEV_FULL
and RXQUAL_FULL
The SID frames for the TCH channels are defined in /GSM 05.08:8.3/.
The Speech Quality Index, SQI, is an index which shall be a
measurement of the subjective speech quality of the uplink speech. The
algorithm to obtain the index uses BER and FER measurements over a
defined period of frames, excluding DTX, as input.
Results from channel measurements are reported by A-bis message
MEASUREMENT_RESULT /GSM 08.58:8.4.8/.
23.3.2 Idle Channel Measurements
The RBS can perform signal strength measurements of disturbances on
all idle uplink dedicated channels.
The function is set to on or off on full rate or half rate basis when the
TS is configured by the BSC.
Measurements of signal strength are made over an averaging period.
The averaging period specifies the number of measurement periods
from which an average value is to be calculated. The averaging period
is specified for each TS by the BSC.
220 (421)
EN/LZT 720 0008 R1A
2001-06-26
© Ericsson Radio Systems AB
— All Rights Reserved —