Mobiserve Maintenamce

1. Alcatel BTS
Training Program
Alcatel BTS
Training Program
Khalid Mahmood (RYK-222)

2.
The BTS provides two-way radio
communication between the PSTN and
Mobile Station (Mobile Set) located in a
single GSM cell. It also provides a similar
link between the mobile station and the
rest of the networks. The BTS provides on
interface for the digital baseband signals
used by the land based networks and the
GSM radio signals used by mobile station.
BTS Role in GSM
Network

3. Logical position of BTS in BSS

4. For system incorporating GPRS some
additional components are required as
shown the below figure. An MFS is
placed in the system between the BSC
and SGSN. The MFS contains a number
of PCUs, one of which controls all the
GPRS activity for the one cell.
BTS in BSS with GPRS

5. Logical position of BTS in BSS with GPRS

6. A serving GPRS support node (SGSN) is responsible for
the delivery of data packets from and to the mobile
stations within its geographical service area. Its tasks
include packet routing and transfer, mobility
management (attach/detach and location
management), logical link management, and
authentication and charging functions. The location
register of the SGSN stores location information (e.g.,
current cell, current VLR) and user profiles (e.g., IMSI,
address(es) used in the packet data network) of all
GPRS users registered with this SGSN.
SGSN (serving GPRS support node)

7. Functional
Architecture of BTS

8. Channel Organization
RF signals over the Air interface carry traffic and
signaling/Control channels which are organized
according to GSM recommendations. The allocation
and control of these channels are managed by the BTS
functions.
Radio Resource Management function controls and
organize radio resources to meet current operational
needs of both the networks and individual.
Functional Architecture of BTS

9. As the principal interface between the PSTN and Mobile
Stations, the BTS performs four primary functions.
Transmission function, which manage the transfer of traffic
and control data between the BTS and BSC.
Telecommunication functions, which manage the transfer of
traffic and control data between the BTS and Mobile Station.
O&M function, which supervise the operation of the BTS.
Support function, which provides a logical and physical
environment in which the BTS functions can be realized.
BTS Functions
Communication between the transmission, telecommunication,
and O&M functions is managed according to the OSI model. The
BTS functions are concerned with layer 1 (Physical), Layer 2 (Data
Link), and Layer 3 (Network) of this
model.

10. To minimize operating costs, all data passed between the BTS
and BSC in Time division multiplexed onto a single physical
interface. This is the Abis Interface, which carries all the data
sent between the BSC and BTS. Logical links between the BSC
and BTS handles the following information:
Transmission Functions
Signaling data used for control purposes
O&M data for the BTS transmission module
O&M data for the BTS entities
User data in the form of speech and data traffic.

11. To minimize operating costs, all data passed between the BTS
and BSC in Time division multiplexed onto a single physical
interface. This is the Abis Interface, which carries all the data
sent between the BSC and BTS. Logical links between the BSC
and BTS handles the following information:
Transmission Functions
Signaling data used for control purposes
O&M data for the BTS transmission module
O&M data for the BTS entities
User data in the form of speech and data traffic.

12. For BTS and BSC multiplexing equipment is normally
connected using dedicated cabling. Other method of Abis
Interface connection can be used for BTS, where the
installation of the dedicated cabling in not possible. In this
case, control of the transmission medium is in the hands of
third party.
Abis Interface:
Microwave Link (used where line of sight radio path is available.
Leased Line (Copper Cable or Fiber Optic used where the
distance between the BSC and BTS is too great for microwave).
Satellite Link (Used where Previous two methods are not
possible)

13. There are two primary telecommunication functions:
Telecommunication Function
Based band funcations modulate and encode traffic and signaling
data from the BSC according to GSM recomendaitos. This data is
then sent to the Mobile Stations using the RF function. Traffic and
signaling received from the Mobile Stations is demodulated and
decoded to recover the baseband data.
Baseband Functions:

14. Telecommunication Function
RF functions enable traffic and signaling to be sent and received
over the Air Interface as a radio signal. A special link layer protocol
ensures the reliable transfer of signaling data over the Air
Interface.
For antenna Diversity, the telecommunication function uplink path
is duplicated. The duplicated functions intend from the antennas,
through the RF functions.
RF Function:

15. O&M Functions
O&M functions monitor and control the correct operation of the
BTS and its external interfaces. These function are shared between
the BTS and BSC. The BSC provides overall control.
The O&M function use Layer 2 links for BTS internal
communications. A terminal connected via an MMI is used for
local operator control of the BTS.
There are four categorized of O&M function:
Configuration Management
Fault Management
Dedicated Alarm and Control Handling
External Alarm Handling.
The O&M function also control the operation of the RF self-tests
and manage the actions required by the BTS recovery Strategy.

16. Support Function
The support function provides a number of services relevant to
the internal working of the BTS are:
Clock generation and distribution.
External alarm collection.
Internal self tests.

17. Introduction of
Alcatel BTS
Introduction of
Alcatel BTS

18. BTS Circuit Breakers
(BCB)
Network Interface Card
External Alarm Circuit Board
(EACB)
Shelf # 5
Shelf # 4
Shelf # 3
Shelf # 2
Shelf # 1
Combiners
TRE
SUMA Card

19. External Alarm Circuit Board
(EACB)
Network Interface Card BTS Circuit Breakers
(BCB)

20. BTS Circuit Breakers
(BCB)

21. External Alarm Circuit Board
(EACB)

22. Network Interface Card

23. Transmitter Connector
Antenna Connector
Lock Fastener
Module
Extractor
Receiver Connector
Equipment Label

24. Lock Fastener
Transmitter Connector
Module
Extractor
Receiver Connector
Antenna Connector
Equipment Label

25. Lock Fastener
Transmitter Connector
Module
Extractor
Equipment Label
ON/OFF Switch
USB Test Connector
Receiver Connector
LEDs

26. Abis ½ Connector
Lock Fastener
Equipment Label
BTS Connection
Area Connector
BTS Terminal Connector
Test Connector
USB Connector
LEDs

27. SUMA Card Basic Architecture

28. Remote Inventory Cable
(RI Cable)

29. Remote Inventory Cable
(RI Cable)

30. Cabinet Cooling Fan

31. Connect to Alcatel BTS
Using BTS-Terminal
release B9
Connect to Alcatel BTS
Using BTS-Terminal
release B9

32. User Name
(COMMTE)
Password
(COMMTE)

33. Press Baud rate button to set it

34. Select Baud rate = 19200
Select the appropriate COM Port

35. Press F2 OR
“Connect/Disconnect” button
OR File->Connect/Disconnect from
menu

36. Following windows will open on
establishing successful connection
Menu bar will be changed on
establishing successful connection

37. Monitor Active Alarm
External Active Alarms Show
Here

38. Show Hardware
Configuration (Ctrl H)
Select Appropriate Module
Select OK
Select All

39. SUMA Card = OMU 1 Rack A (BTS Cabinet # 1)
Shelf # 2
Slot # 7

40. SBL Module States (F5) SBL Module States (F5)
VSWR Value=1.2
VSWR Value=1.1
Antenna 0=A
Antenna 1=B
RA 1= Combiner 1 Sector A

41. SBL Management
SBL Management Read Initialize
Disable
Restart
Reset
Select Module

42. Execution Result
Selected Module
Type
State of the Module
(NEQ/OPR/IT)

43. Modify Hardware
Configuration Remove Module
Select Module to
Remove
End Modification of HW Configuration

44. Following window appears
(Cabling Detection in Progress)
Click Yes

45. OFF Line
Commissioning
Procedure
OFF Line
Commissioning
Procedure

46. Switch OFF the BTS cabinet
and disconnect Abis
connectors from DDF before
offline start

47. Disconnect the Abis connector
from The DDF

48. Switch ON the BTS cabinet
breakers and connect the
Laptop at the BTS Terminal
using MMI Cable

49. User Name
(COMMTE)
Password
(COMMTE)

50. Press F2 OR
“Connect/Disconnect” button
OR File->Connect/Disconnect from
menu

51. Following windows will open on
establishing successful connection
Menu bar will be changed on
establishing successful connection

52. Restore Default
Warning Window appears
Click OK to Restore SUMA
Card

53. Verify Qmux address
Press “Yes” to change it
Confirm Qmux address from OMCR first

54. Go to
Commissioning->Download->BTS-SW
to download BTS software

55. Edit New Qmux address
Press “Put” button to update

56. Updating Qmux address

57. Press Browse to select the
path of “BM1SAW19.MSF” file
Path Selection Window
Press Browse to select the
path of “AGC3AVWa.DDL” file

58. Software download in Progress
It may take up to 30 minutes

59. Initialization window open when
download complete

60. Receiving data window open

61. Select appropriate option from
Frequency Brand dropdown menu
1- Select GSM for GSM cabinet
2- Select DCS1800 for DCS cabinet
3- Select GSM for GSM+DCS
(Combined) cabinet

62. Don’t uncheck Bridge check option
and don’t change Sectors numbers
Press “Save” button in Sector
mapping window

63. Updating flash

64. Press Save in TMA Setting window

65. Press
Settings->Transmission->Initial Settings

66. Verify Baud Rate = 1200
Verify Environment
Abis1 = Chain – end position
Verify CRC Check = ON
Reconfirm the Qmux address
Check Line impedance for
Abis1 & Abis2 = 75ohm

67. Press
Settings->Transmission->Board Settings

68. Uncheck all TREs
press “Transmit” button

69. Press
Commissioning->Initialization->All Sectors
to initialize BTS

70. Initialization of Commissioning in
progress

71. Press
Commissioning->Station Unit Test
for Station Unit Test

72. Select “Internal Loop”

73. “Station Unit Test” in progress

74. Following Results on successful
completion

75. Select External Loop
(Make Sure that the Abis # or 2 must be looped at DDF

76. Abis # 1 Loop test failed because Abis # 1 not Looped at DDF
Result window
appears

77. Now switch on the BTS
cabinet breakers and
through the site

78. Reconnect the Abis connector
at DDF by verifying the TX/RX
cables properly
Reconnect the Abis connector
at DDF by verifying the TX/RX
cables properly

79. Best Wishes
OFF Line Commissioning is
Done Successfully
Best Wishes
OFF Line Commissioning is
Done Successfully

80. Alcatel Glossary
A
AN Antenna Network
B
BCB BTS Control Bus
BSII Base Station Controller
BSS Base Station Subsystem
BTS Base Station Transceiver
BTSW BTS-Terminal for Windows

81. Alcatel Glossary
C
CCF Cabinet Cooling Fan
CDM Configuration Data Message
CLEI Common Language Equipment
CLLK Clock Link
CPF Configuration Parameter File
CRC Cyclic Redundancy Check
CU Carrier Unit

82. Alcatel Glossary
D
DC Direct Current
DMA Deferred Maintenance Alarm
E
EQU Equipped

83. Alcatel Glossary
F
FIA Format Identifier for Application
part of RI
FIM Format Identifier Manufacturing
FIT Faulty In Traffic
FLT Faulty
FOS Faulty Out of Service

84. Alcatel Glossary
I
ICS Item Change Status
IT In Traffic
L
LDA Local Defence Action
LRA Local Recovery Action

85. Alcatel Glossary
M
MI Maintenance Information
MSA MSD Auto
MSD Maintenance Seized
N
NEQ Not Equipped
NOP Not Operational

86. Alcatel Glossary
O
O&M Operation and Maintenance
OMU Operation and Maintenance Unit
OMUA OMU A RIT
OMUB OMU B RIT
OP Operational
OPR Operator

87. Alcatel Glossary
P
PADD Physical Address
PMA Prompt Maintenance Alarm
R
RA Radio Access
RF Radio Frequency
RFH Radio Frequency Hopping ( also known as :
Synthesizer Hopping )
RI Remote Inventory
RIT Replaceable Item
RX Receiver or receive .....
RTC Remote Tunable Combiner

88. Alcatel Glossary
S
SBL Security Block Level
SCFE Station Unit Control Function
Entity RIT
SOS System Out of Service
SUM Station Unit Module
SUMP SUM PCM RIT
SW Software

89. Alcatel Glossary
T
TLV Tag, Length, Value
TRE Transceiver Module (combined
Transmitter / Receiver functionality for
base band and RF
signals)
TS Timeslot
TX Transmitter or transmit .....

90. Alcatel Glossary
V
VPMA Very Prompt Maintenance Alarm
VSWR Voltage Standing Wave Ratio
W
WBC Wide Band Combiner
WTC Wait Traffic Clear
X
XBCB External BCB
XCLK External Clock
XIOB External Input Output Board