Presentation on theme: "GBC_022_E0_1 ZXG10-B8018 description"— Presentation transcript:
1GBC_022_E0_1 ZXG10-B8018 description ZTE UniversityGSM BSS Team
2Contents General Introduction Structure Introduction New Features Configuration IntroductionNetworking modes
3What does B8018 mean? General Introduction Specification explanation
4General IntroductionGeneral IntroductionZXG10 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).
5General IntroductionGeneral IntroductionThe 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.
6General Introduction Rack Layout of B8018 Cabinet size 1600mm×600mm×550mm(H×W×D)
7General IntroductionSystem IndicesFrequency Range GSM900, EGSM900, 850, 1800, 1900MHz bandPower Amplifier Output: For GMSK=60W For 8PSK= 40WStatic Receiving Sensitivity dBmVoltage V DCAllowed Change Range ~ -57Maximum Power Consumption WWorking Temperature ~ 45 CRelative Humidity % ~ 90%Grounding Resistance <5 ohmCapacity Single rack=18 TRX/RackLargest Site Type S18/18/18 or O54
15General Introduction BTS Type BTS_NO : Cabinet number in the same site 00 : Basic Cabinet01 : Extended Cabinet 110 : Extended Cabinet 2SLAVE1_PORT : The E1 port of the basic cabinet to connect extendedcabinet 100 : Port E of the basic cabinet01 : Port F of the basic cabinet10 : Port G of the basic cabinet11 : Port H of the basic cabinet
16General IntroductionGeneral IntroductionSLAVE2_PORT : The E1 port of the basic cabinet to connect extendedcabinet 200 : Port E of the basic cabinet01 : Port F of the basic cabinet10 : Port G of the basic cabinet11 : Port H of the basic cabinetSATE : Whether to use the satellite Abis link or not0 : Common Abis1 : Satellite AbisABIS_PORT : O&M port number00 : Port A01 : Port B10 : Port C11 : Port D
17General Introduction ABIS_TS : The O&M Lapd timeslot on Abis interface
19Contents General Introduction Structure Introduction New Features Configuration IntroductionNetworking modes
20Structure Introduction General hardware structure of ZXG10 B8018
21Structure 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.CMBPWRRUNSYNCLKMSTSTAM/SRSTFPWR
22Structure 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.
23Structure Introduction Time Slot Switching in B8018 System
24Structure 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.
25Structure Introduction E1/T1 Interface Board (EIB)EIB Board provides the Abis interface connecting to the BSC.EIB
26Structure Introduction EIB hardware sub-system of ZXG10 B8018
27Structure Introduction FIB hardware sub-system of ZXG10 B8018
28Structure 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.
29Structure Introduction DTRU Front panelCompared with BTS(V2.9), there areAnother ACT indicator, ACT1 and ACT2 Indicate the channel status of 2 TRX Separately.
46Contents General Introduction Structure Introduction New Features Configuration IntroductionNetworking modes
47New Features The main features of ZXG10 B8018 is shown below: DTRU technology;DPCT-dual power combining Transmission;DDT-delay diversity transmission4-way diversity reception;IRC-Interference Rejection Combining;intelligent power on/off;IP Abis-interface.
48New FeaturesNew FeaturesThe 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.
49New Features One DTRU can easily be used to extend coverage
50New 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.
52New FeaturesNew FeaturesDPCT implementation in B8018
53New 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.
54New Features Delay Diversity Transmission DDT implementation in B8018
55New 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.
56New 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.
57New 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.
58New FeaturesNew FeaturesIP AbisOne 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
59Contents General Introduction Structure Introduction New Features Configuration IntroductionNetworking modes