1. GBC_022_E0_1 ZXG10-B8018 description
ZTE University
GSM BSS Team

2. Contents General Introduction Structure Introduction New Features
Configuration Introduction
Networking modes

3. What does B8018 mean? General Introduction Specification explanation

4. General Introduction
General Introduction
ZXG10 B8018 is new type of ZXG10-BTS, based on ZXG10-BTS (V2)
It not only has inherited all advantages of ZXG10-BTS (V2), but also has added many new functions and services to satisfy market requirements. In addition, it also reduces hardware and networking cost.
It is one of the most perfect serial BS and solve the problem that cannot be solved by current ZXG10-BTS (V2).

5. General Introduction
General Introduction
The main functions of ZXG10 B8018 are shown below:
Employs DTRU technology, i.e. two carriers in each physical transceiver module;
Supports parallel connection with ZXG10-BTS (V2) cabinet to realize capacity expansion;
Supports DPCT, downlink delay diversity (DDT) transmission, IRC and so on;
Supports 4 diversities reception;
Supports 8 E1/T1 interface;
Supports 75Ω/E1 and 120Ω/E1 transmission;
Supports intelligent power on/off;
Supports IP Abis-interface.

6. General Introduction Rack Layout of B8018 Cabinet size
1600mm×600mm×550mm
(H×W×D)

7. General Introduction
System Indices
Frequency Range GSM900, EGSM900, 850, 1800, 1900MHz band
Power Amplifier Output: For GMSK=60W For 8PSK= 40W
Static Receiving Sensitivity dBm
Voltage V DC
Allowed Change Range ~ -57
Maximum Power Consumption W
Working Temperature ~ 45 C
Relative Humidity % ~ 90%
Grounding Resistance <5 ohm
Capacity Single rack=18 TRX/Rack
Largest Site Type S18/18/18 or O54

8. General Introduction
BTS Expansion
S6/6/6
S12/12/12
S18/18/18

9. Single Cabinet with Full Configuration
General Introduction
Single Cabinet with Full Configuration

10. General Introduction Rear Board Grounding Screw Cabinet Top
Top-Layer Shelf
Fan Plug-in Box
Carrier Shelf
Side Baffle
Front Door
Horizontal Cabling Rack
Cabinet Main Body
Base
Air Filter Plug-in Box
Cabinet Structure

11. General Introduction
General Introduction
Cabinet Top Layout

12. Interfaces on the Cabinet Top
General Introduction
General Introduction
Interfaces on the Cabinet Top

13. Interfaces on the Cabinet Top
General Introduction
General Introduction
Interfaces on the Cabinet Top

14. General Introduction
General Introduction
DIP Switch

15. General Introduction BTS Type BTS_NO : Cabinet number in the same site
00 : Basic Cabinet
01 : Extended Cabinet 1
10 : Extended Cabinet 2
SLAVE1_PORT : The E1 port of the basic cabinet to connect extended
cabinet 1
00 : Port E of the basic cabinet
01 : Port F of the basic cabinet
10 : Port G of the basic cabinet
11 : Port H of the basic cabinet

16. General Introduction
General Introduction
SLAVE2_PORT : The E1 port of the basic cabinet to connect extended
cabinet 2
00 : Port E of the basic cabinet
01 : Port F of the basic cabinet
10 : Port G of the basic cabinet
11 : Port H of the basic cabinet
SATE : Whether to use the satellite Abis link or not
0 : Common Abis
1 : Satellite Abis
ABIS_PORT : O&M port number
00 : Port A
01 : Port B
10 : Port C
11 : Port D

17. General Introduction ABIS_TS : The O&M Lapd timeslot on Abis interface

18. General Introduction
General Introduction
Ventilation scheme

19. Contents General Introduction Structure Introduction New Features
Configuration Introduction
Networking modes

20. Structure Introduction
General hardware structure of ZXG10 B8018

21. Structure Introduction
Controller & Maintenance Board (CMB)
CMB is a major digital board in ZXG10 B8018 (V1.00) providing interface and central control functions. CMB works in active/standby mode, to avoid interruption and give protection to the services.
CMB
PWR
RUN
SYN
CLK
MST
STA
M/S
RST
FPWR

22. Structure Introduction
CMB Function:
Provides eight E1/T1 interfaces.
Overall radio clock and transmission clock synchronization can be achieved by configuring CMB for overall network synchronization at background.
Provides transparent passage for external environment alarm.
Supports star, chain, tree, and ring networking at Abis interface.

23. Structure Introduction
Time Slot Switching in B8018 System

24. Structure Introduction
Implements, and reads various hardware management IDs of system includes: detect in-position indication, send control command by control link ,software reset each board in system, implement power switch of each board in system, implement power switch of each board in system.
Monitoring and control of each board running status.

25. Structure Introduction
E1/T1 Interface Board (EIB)
EIB Board provides the Abis interface connecting to the BSC.
EIB

26. Structure Introduction
EIB hardware sub-system of ZXG10 B8018

27. Structure Introduction
FIB hardware sub-system of ZXG10 B8018

28. Structure Introduction
Transceiver Module for EDGE (DTRU)
DTRU means dual TRX，one DTRU consist of two TRXs in ZXG series BTS.
The DTRU controls and processes radio channels in the GSM system, sends/receives radio channel data, modulates/demodulates baseband signals on the radio carrier, sends/receives radio carrier signals, and collects alarms of the fans and AEMs.

29. Structure Introduction
DTRU Front panel
Compared with BTS(V2.9), there are
Another ACT indicator, ACT1 and ACT2 Indicate the channel status of 2 TRX Separately.

30. Structure Introduction
Antenna Equipment Module (AEM)
TRM GROUP
AEM Tx Rx
RxD
Antenna Equipment Module

31. Structure Introduction
Antenna Equipment Module Types

32. Structure Introduction
Antenna Equipment Module

33. Structure Introduction
Antenna Equipment Module

34. Structure introduction
Antenna Equipment Module

35. Structure Introduction
Antenna Equipment Module

36. Structure Introduction
Difference between CEUs and CENUs

37. Structure Introduction
Introduction of CDU (1)

38. Structure Introduction
RX1
CDU
TEST
ANT
TX1
TX2
RX2
RX3
RX4
EX1
EX2
Combiner Input
Indicator
Divider Output
Divider Ext Output
Antenna
Test Port
Ext Receive
1 to 4 Divider
2 to 1 Combiner D U P L E X R
Introduction of CDU (2)

39. Structure Introduction
Introduction of ECDU

40. Structure Introduction
Introduction of RDU

41. Structure Introduction
Introduction of CEU (1)

42. Structure Introduction
RX1
CEU
TX1
TX2
RX2
RX3
RX4
EX1
EX2
OTX1
TX3
TX4
OTX2
Indicator
Divider Output
Divider Ext Output
Combiner Input
Combiner Output
1 to 2 Divider
2 to 1 Combiner
Introduction of CEU (2)

43. Structure Introduction
Introduction of CENU

44. Structure Introduction
Introduction of CENU/2

45. Structure Introduction
PDM of ZXG10 B8018

46. Contents General Introduction Structure Introduction New Features
Configuration Introduction
Networking modes

47. New Features The main features of ZXG10 B8018 is shown below:
DTRU technology;
DPCT-dual power combining Transmission;
DDT-delay diversity transmission
4-way diversity reception;
IRC-Interference Rejection Combining;
intelligent power on/off;
IP Abis-interface.

48. New Features
New Features
The DTRU is very flexible and can be used for several purposes . Its two TRXs, for instance, can be used separately (the same with ever)or both,both refers to by DPCT to improve the downlink and by four-way diversity to improve the uplink, they can be configured to create a super TRX.

49. New Features One DTRU can easily be used to extend coverage

50. New Features DPCT---- Dual Power Combining Transmission:
When seeking greater cell range it is crucial to have a strong signal from the BTS to the handset. This is often referred to as downlink capability. This is what a handset presents as signal strength in the display. In configurations intended for maximum coverage, Dual Power Combining Transmission (DPCT) feature doubles the output power from the BTS cabinet, resulting in a significantly larger coverage area.

51. New Features
New Features
DPCT principle

52. New Features
New Features
DPCT implementation in B8018

53. New Features DDT ----Delay Diversity Transmission
Purpose: supports downlink transmitter diversity (the mobile phone combines the best of two signals).
Implementation: by transmitting the same information on two TRXs with a short delay and different antennas.
using only a simple software command, operators can convert the base station from a two transceiver operational mode into the “DDT" mode, where the two transceivers work together as one virtual transceiver, so extending the range.
cellular downlink performance is increased by at least 3.0 decibels (dB) at the cell border, reducing the number of sites needed by up to 30 percent over any conventional base station coverage network.

54. New Features Delay Diversity Transmission DDT implementation in B8018

55. New Features 4 div RX ― 4 diversities reception
The majority of radio networks today have limited range due to weak uplink signals from handsets. The best way to overcome an unbalanced link budget is to ensure good receiver capability in the base station. With the addition of a second antenna system in the cell, we enable 4-Way Receiver Diversity (4WRD), and this provides a total uplink that compensates for weak handset signals.
The combination of DPCT with fully compensated uplink based on 4-way Receiver Diversity comprises our Supreme Coverage solution.

56. New Features IRC ― Interference Rejection Combining
Another way to increase the capacity, more advanced detection techniques have been implemented - Interference Rejection Combining (IRC)
In maximum ratio combining (MRC) each signal is weighted with its signal-to-noise ratio to achieve optimum performance in white noise environments, i.e. the noise signal is uncorrelated in time.
IRC, on the other hand, takes the correlation properties of CO-channel interferers into account to suppress them, and therefore is able to achieve much better performance in co-channel limited environments than MRC.

57. New Features Int. Pwr on/off ― Intelligent power on/off
In order to reduce OPEX of operator, when traffic decrease to certain value or in idle mode, this scheme automatically to turn off part of Modules of B8018 to save power.
When traffic increase to certain busy threshold, this scheme automatically to turn on sleep module to balance the traffic.
The principle is as follows: CMB is able to control the switch of all board (mainly is DTRU) in rack except interface board (EIB/FIB) and CMB.

58. New Features
New Features
IP Abis
One of the primary advantages of employing IP-based transport is the ease of maintenance arising from convergence of core and RAN networks.
Other advantages include economic benefits and capacity benefits

59. Contents General Introduction Structure Introduction New Features
Configuration Introduction
Networking modes

60. Configuration Instruction
Configuration Introduction
Configuration Instruction
O4 Configuration

61. Configuration Instruction
Configuration Introduction
Configuration Instruction
O6 Configuration

62. Configuration Instruction
Configuration Introduction
Configuration Instruction
O8 Configuration

63. Configuration Instruction
Configuration Introduction
Configuration Instruction
S8/8/8
Configuration

64. Configuration Instruction
Configuration Introduction
Configuration Instruction
DPCT with O2 (S2) with 4 Diversity

65. Configuration Instruction
Configuration Introduction
Configuration Instruction
GSM900 + GSM1800 S2 + S2
Configuration

66. Configuration Instruction
Configuration Introduction
Configuration Instruction
S4/4/4 Configuration

67. Configuration Instruction
Configuration Introduction
Configuration Instruction
S6/6/6 Configuration

68. Configuration Instruction
Configuration Introduction
Configuration Instruction
Configuration

69. Configuration Instruction
Configuration Introduction
Configuration Instruction
S2/2/2 Configuration
With DPCT and 4 Diversities

70. Configuration Instruction
Configuration Introduction
Configuration Instruction
S2/2/2
hybrid Configuration

71. Configuration Instruction
Configuration Introduction
Configuration Instruction
S8/8/8
Configuration

72. Contents General Introduction Structure Introduction New Features
Configuration Introduction
Networking modes

73. Networking modes
Networking Modes
Tree Networking Mode

74. Networking modes
Networking Modes
Star Networking Mode

75. Networking modes
Networking Modes
Chain Networking Mode

76. Networking modes
Networking Modes
Ring Networking Mode