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
Discontinuous Transmission
SID frames (including comfort noise parameters) are scheduled in
TDMA frames according to /GSM:05:08:8.3/. When a SID frame is
stolen for signalling (FACCH) purposes, the scheduling in TDMA
frames will instead be according to /GSM:06.31:5.1.2/, /
GSM:06.41:5.1.2/ or /GSM:06.81:5.1.2/.
The output power is turned off during periods of silence, except in the
following cases:
•
Transmission of SID frames (comfort noise parameters)
•
Transmission of signalling (FACCH)
•
Transmission on a C0 carrier (dummy bursts)
•
Transmission on a transmitter configured for filling (dummy
bursts)
DTX Handling Non-transparent Data
To detect idle data transmission in the downlink direction, the E1-bits
of a complete RLP frame received from the RTC, are analysed /
GSM:08.20:4.2/. This frame is not transmitted on the air interface.
When idle data transmission is detected, an L2 (Layer 2 protocol) fill
frame /GSM:04.06:5.4.2.3/ is transmitted (on FACCH) in the SID
positions of the TDMA frame according to /GSM:05:08:8:3/.
The output power is turned off during periods of idle data transmission,
as described in the section DTX handling speech above.
24.2.2 DTX Uplink
The DTXu indicator (of element Channel Mode) in the
CHANNEL_ACTIVATION or MODE_MODIFY messages from the
BCS is ignored, since the RBS is always prepared to handle uplink
DTX.
The uplink DTX function is supported for the following services:
• TCH speech, full rate (GSM speech alg. version 1)
•
TCH speech, full rate (Speech full rate version 2)
•
TCH speech, half rate (GSM speech alg. version 1)
• TCH speech, full rate (GSM speech alg. version 1) bidirectional
• TCH speech, full rate (Speech full rate version 2) bidirectional
Data frames (transparent and non-transparent) are passed transparently
from the MS to the RTC without consideration to DTX.
To detect if a speech frame (received from MS) contains speech or
comfort noise parameters, RBS analyses the SID code word /
GSM:06.12:5.2/, /GSM:06.62:5.3/or /GSM:06.22:5.3/. An indication of
comfort noise parameters (SID flag), is sent in the full rateRTH-
SPEECH-IND/RTH-E-SPEECH-IND or half rate RTH-SPEECH-IND
frames to the RTC.
Full Rate
EN/LZT 720 0008 R1A
2001-06-26
225 (421)
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