ZXSDR B8200(L200) Principle and Hardware Structure Training Manual

ZXSDR B8200 (L200) Principle and Hardware Structure Training Manual 2.00.050

ZTE UNIVERSITY ZTE University, Dameisha YanTian District, Shenzhen, P. R. China 518083 Tel: (86) 755 26778800 Fax: (86) 755 26778999 URL: http://ensupport.zte.com.cn E-mail: [email protected]

LEGAL INFORMATION Copyright © 2012 ZTE CORPORATION. The contents of this document are protected by copyright laws and international treaties. Any reproduction or distribution of this document or any portion of this document, in any form by any means, without the prior written consent of ZTE CORPORATION is prohibited. Additionally, the contents of this document are protected by contractual confidentiality obligations. All company, brand and product names are trade or service marks, or registered trade or service marks, of ZTE CORPORATION or of their respective owners. This document is provided “as is”, and all express, implied, or statutory warranties, representations or conditions are disclaimed, including without limitation any implied warranty of merchantability, fitness for a particular purpose, title or non-infringement. ZTE CORPORATION and its licensors shall not be liable for damages resulting from the use of or reliance on the information contained herein. ZTE CORPORATION or its licensors may have current or pending intellectual property rights or applications covering the subject matter of this document. Except as expressly provided in any written license between ZTE CORPORATION and its licensee, the user of this document shall not acquire any license to the subject matter herein. ZTE CORPORATION reserves the right to upgrade or make technical change to this product without further notice. Users may visit ZTE technical support website http://ensupport.zte.com.cn to inquire related information. The ultimate right to interpret this product resides in ZTE CORPORATION.

Publishing Date (MONTH/DATE/YEAR) : 02/16/2012

Contents

ZXSDR B8200 Principle and Hardware Structure .......... 1 1 Product Overall Description....................................... 2 1.1 ZTE Distributed Base Station Solution ...................................... 2 1.2 Product Location in LTE Wireless Network ................................. 4 1.3 Product Overall Appearance .................................................... 5 1.4 Product Characteristics ........................................................... 5 1.5 Product Function List.............................................................. 6 1.6 Typical Boards/Modules Configuration....................................... 6 1.7 Product External Interfaces ..................................................... 7 1.8 Product Networking Mode ....................................................... 8 1.9 Product System Structure ....................................................... 9 1.9.1 Hardware Structure ....................................................... 9 1.9.2 Software Structure .......................................................10 1.10 Operation and Maintenance Introduction ................................11

2 Working Principles .................................................. 15 2.1 Relevant Protocols ................................................................15 2.2 Control Signal Data Flow .......................................................18 2.3 User Service Data Flow .........................................................19 2.4 Clock Data Flow ...................................................................20 2.5 Clock Data Flow ...................................................................20

3 Technical Indices .................................................... 21 3.1 Physical Indices....................................................................21 3.2 Capacity..............................................................................22 3.3 Power Supply .......................................................................22 3.4 Power Consumption ..............................................................22 3.5 Grounding Index ..................................................................22 3.6 Interface Indices ..................................................................23 3.7 Working Environment Indices .................................................23 3.8 Electromagnetic Compatibility Indices .....................................24 3.9 Reliability Indices .................................................................24

4 Boards..................................................................... 25 4.1 Overview.............................................................................25

4.2 CC Board.............................................................................26 4.2.1 CC Board Function........................................................26 4.2.2 CC Board Front Panel ....................................................26 4.2.3 CC Board Panel Indicators .............................................27 4.2.4 CC Board Panel Interface...............................................29 4.2.5 CC Board Button ..........................................................30 4.3 BPL Board ...........................................................................30 4.3.1 BPL Board Function ......................................................30 4.3.2 BPL Board Front Panel...................................................31 4.3.3 BPL Board Panel Indicators ............................................31 4.3.4 BPL Panel Interfaces .....................................................32 4.3.5 BPL Board Button .........................................................32 4.4 SA Board.............................................................................32 4.4.1 SA Board Function ........................................................32 4.4.2 SA Board Front Panel ....................................................33 4.4.3 SA Board Panel Indicators .............................................33 4.4.4 SA Board Panel Interfaces .............................................33 4.5 FAN Module .........................................................................33 4.5.1 FAN Module Function ....................................................33 4.5.2 FAN Module Front Panel.................................................34 4.5.3 FAN Module Panel Indicators ..........................................34 4.6 PM Board.............................................................................35 4.6.1 PM Board Function........................................................35 4.6.2 PM Board Front Panel....................................................35 4.6.3 PM Board Panel Indicators .............................................36 4.6.4 PM Board Panel Interfaces .............................................36

5 Cables ..................................................................... 37 5.1 DC Power Cable....................................................................37 5.2 PE Cable..............................................................................37 5.3 S1/X2 Cable ........................................................................38 5.4 RF Cable .............................................................................39 5.5 Dry Contact Cable ................................................................39 5.6 GPS Jumper.........................................................................40

ZXSDR B8200 Principle and Hardware Structure After you have completed this course, you will be able to: >> Master ZXSDR B8200 working principle >> Master ZXSDR B8200 module function

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ZXSDR B8200 (L200) Principle and Hardware Structure Training Manual

Chapter 1 Product Overall Description After you have completed this chapter, you will know: >> ZTE Distributed Base Station Solution >> Product Location in LTE Wireless Network >> Product Overall Appearance >> Product Characteristics >> Product Function List >> Typical Boards/Modules Configuration >> Product External Interfaces >> Product Networking Mode >> Product System Structure >> Operation and Maintenance Introduction

1.1 ZTE Distributed Base Station Solution To supply the customer with more competitive communication equipment and solution in the market, ZTE develops and promotes ZTE SDR eBBU (baseband unit) and eRRU (remote RF unit) distributed base station solution timely, which jointly perform LTE base station service. ZTE distributed base station solution is shown in Figure 1.

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Chapter 1 Product Overall Description

FIGURE 1 ZTE DISTRIBUTED BASE STATION SOLUTION

ZTE's LTE eBBU+eRRU distributed base station solution has the following predominance: 1. Saving labor cost and engineering cost for networking. eBBU+eRRU distributed base station equipment is small in size, light in weight, and easy for transportation and engineering construction. 2. Fast networking, also saving the fees of renting equipment room. eBBU+eRRU distributed base station is applicable to various sites, such as mounted on the steel tower, on the building top, or on the wall, etc. It's more flexible in selecting installation site, and not restricted by the space of the equipment room. It can help the operators to deploy network rapidly, and exert the predominance of Time-To-Market. It can also save the fees of renting equipment room, and the network operation cost. 3. Convenient in upgrade and capacity expansion; saving the initial stage cost of the network. eRRU can be mounted as close to the antenna as possible, to save the cost of feed cable and decrease the wastage of feed cable. It also can enhance the output power of eRRU top and increase the coverage. 4. Low power consumption, power-saving. Compared with traditional base station, eBBU+eRRU distributed base station has lower power consumption, which can greatly reduce the investment and cost on electric power, and thus save the network operation cost.

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ZXSDR B8200 (L200) Principle and Hardware Structure Training Manual

5. Distributed networking, making good use of operators' network resources supporting eBBU+eRRU distributed networking; supporting the star or chain networking mode between eBBU and eRRU. 6. Adopting more perspective generalized base station platform. eBBU adopts the platform designed for the future B3G and 4G. One hardware platform can realize different standard modes, and several standard modes can coexist in one base station. In this way, the operators' management can be simplified, and several base stations to be invested can be integrated into one base station (multimode base station). The operators can select the evolution direction of the future network more flexibly, and the end users will also feel the transparency of the network and smooth evolution.

1.2 Product Location in LTE Wireless Network LTE is a new-generation wireless network technology based on OFDM technology. The main aims of formulating LTE standards are: �

To provide higher user data rate, enhance system capacity, decrease delay and operation cost.

�

To realize the flexible configuration and implementation of the mobility of a present or new access technology based on IP network.

LTE has optimized the traditional 3G network architecture, and adopts flat network structure. LTE system consists of EPC and eNodeB. EPC is responsible for the core network. EPC's signaling processing part is called as MME, and the data processing part is called as SAE Gateway (S-GW). eNodeB is responsible for the access network, being also called E-UTRAN. eNodeB and EPC are connected via S1 interface; eNodeB and other eNodeBs are connected via X2 interface. ZXSDR B8200 L200 realizes the function of eNodeB's baseband unit, and forms a complete eNodeB with the RF unit (eRRU) via the baseband-RF interface. ZXSDR B8200 L200 and EPC are connected via S1 interface; and are connected with other eNodeBs via X2 interface. The location of the ZXSDR B8200 L200 in LTE network is as shown in Figure 2.

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Chapter 1 Product Overall Description

FIGURE 2 PRODUCT LOCATION IN LTE NETWORK

1.3 Product Overall Appearance ZXSDR B8200 L200 overall appearance is as shown in Figure 3. FIGURE 3 PRODUCT OVERALL APPEARANCE

1.4 Product Characteristics Multi-Mode Baseband Unit

ZXSDR B8200 L200 can support all kinds of wireless access technologies simultaneously, including GSM, UMTS, CDMA, WiMAX and LTE, which share the common control function and transmission totally. It fully satisfies operators’need of smooth migration from GSM/UMTS with BP board replaced only.

All-IP Architecture to IP RAN

ZXSDR B8200 L200 adopts IP switching, and provides GE/FE external interfaces.

Large Capacity

ZXSDR B8200 L200 supports different configurations. In typical configuration,ZXSDR B8200 L200 supports 200 Mbps DL + 75 Mbps UL (three 20 MHz cells in MIMO 2x2). ZXSDR B8200 L200 also supports larger capacity with more BPL baseband boards: �

600 Mbps DL + 225 Mbps UL(six 20 MHz cells in MIMO 2x2).

�

600 Mbps DL + 300 Mbps UL(three BPL boards in MIMO 4x4).

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ZXSDR B8200 (L200) Principle and Hardware Structure Training Manual

ZXSDR B8200 L200 is hardware readiness to support MIMO 4x4 without hardware changing. In first GA version, BPL supports MIMO 4x4 in test mode. According to the application scenario, ZXSDR B8200 L200 can support GSM/UMTS/LTE multi-mode with respective baseband processing boards. Baseband Pooling

ZXSDR B8200 L200 supports baseband resource pooling function based on carriers. When FS and two BPLs or three BPLs are configured, one carrier can be flexibly mapped to any BPL board. But at the beginning of LTE network deployment, ZTE recommends only one BPL is configured in order to reduce the operator’s CAPEX investment.

Flexible Networking

ZXSDR B8200 L200 provides GE/FE interfaces and IP networking. It supports eRRU in different networking modes, like star and chain networking to satisfy the requirements of operators in different environments and under different transmission conditions.

Compact Design,Easy Deployment

ZXSDR B8200 L200 adopts standard MicroTCA platform, with 2U in height and 19 inches in width, and can be easily installed into a standard 19 inches rack. It can also be mounted on the wall with a minimal space requirement reducing OPEX.

1.5 Product Function List ZXSDR B8200 L200 accomplishes the following basic functions with Uu/S1/X2 and O&M interfaces: �

Channel coding and decoding

�

Channel multiplexing and de-multiplexing

�

Baseband resource pooling function

�

Measurement and report

�

Power control

�

Spatial multiplexing, transmit diversity and receive diversity

�

Synchronization

�

Frequency hopping

�

Operation and Maintenance

�

DTX

1.6 Typical Boards/Modules Configuration LTE typical configuration supports 3 cells, each with 20 MHz spectrum supported. The processing capability is 2x2 MIMO and 300 Mbps DL + 100 Mbps UL. In this case, for one sector, the number of active users are 400 and the RRC connections are 1200.

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Chapter 1 Product Overall Description

ZXSDR B8200 L200 can be typically configured with 1 BPL board. This configuration is dedicated to the beginning of LTE network deployment. BPL supports 1200 RRC connections. The typical modules configuration of ZXSDR B8200 L200 illustrated in Table 1. TABLE 1 PRODUCT BOARDS/MODULES TYPICAL CONFIGURATION Item

Description

Configuration

CC

1

Control and Clock board

BPL

1 or 3

Baseband Processing for LTE board

PM

1

Power Module

FAN

1

Fan module

SA

1

Site Alarm board

ZXSDR B8200 L200 also supports boards/modules configurations listed below: �

1xCC, 3xBPL, 2xPM, 1xFAN, 1xSA

�

2xCC, 3xBPL, 2xPM, 1xFAN, 1xSA, 1xFS

1.7 Product External Interfaces The external interfaces of ZXSDR B8200 L200 are as shown in Figure 4. FIGURE 4 PRODUCT EXTERNAL INTERFACES

The function description of external interfaces is as shown in Table 2.

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ZXSDR B8200 (L200) Principle and Hardware Structure Training Manual

TABLE 2 PRODUCT EXTERNAL INTERFACES DESCRIPTION No.

Interface

Module/Board

Function Description

1

MON

PM

Debugging interface, RS232 interface

2

-48V/48VRTN

PM

-48 VDC input

3

TX0 / RX0~ TX2 / RX2

BPL

3 pairs of 2.4576 Gbps (2x2 MIMO)/3.072 Gbps (2x4 MIMO)/4.9152 Gbps(4x4 MIMO) CPRI optical interfaces, connected to eRRU

4

DEBUG/CAS/LMT

CC

Ethernet interface for cascading, debugging or local maintenance, GE/FE compatible, electrical

5

ETH0

CC

Ethernet interface for S1/X2, GE/FE compatible, electrical

6

TX/RX

CC

S1/X2, GE/FE compatible, optical (Eth0 and RX/TX are alternative at the same time)

7

USB

CC

Data updating

8

REF

CC

External connection GPS antenna, SMA(F) interface

9

EXT

CC

External communication port, connected to external receiver Mainly RS485, PP1S+/2M+ interfaces

10

SA Interface

SA

Node port, external lightning-proof interface

1.8 Product Networking Mode ZXSDR B8200 L200 connects EPC and other eNodeBs through S1/X2 interfaces with FE/GE, and connects to eRRUs through standard baseband-RF interfaces. ZXSDR B8200 L200 and eRRU support star and chain networking as in Figure 5.

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Chapter 1 Product Overall Description

FIGURE 5 PRODUCT NETWORKING MODE

In star networking mode, ZXSDR B8200 L200 can be connected with 18 eRRUs with 6 BPL boards configured. In chain networking mode, eRRU can cascade to 4 grades.

1.9 Product System Structure 1.9.1 Hardware Structure ZXSDR B8200 L200 consists of a control & clock board, baseband processing boards, a site alarm board, a power module, and a fan module. The ZXSDR B8200 L200 hardware architecture is shown in Figure 6.

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ZXSDR B8200 (L200) Principle and Hardware Structure Training Manual

FIGURE 6 PRODUCT HARDWARE STRUCTURE

ZXSDR B8200 L200 hardware system is designed according to the structure of distributed base station in which the baseband unit and radio frequency unit are separated. It can be classified into two function units: eBBU (Baseband Unit) and eRRU (Remote Radio Unit). It can either deploy with eRRU, or deploy by combining the eRRU and eBBU into one cabinet to form macro base station. eBBU and eRRU are connected via the standard baseband-RF optical interface.

1.9.2 Software Structure The software architecture of ZXSDR B8200 L200 can be divided into three layers, they are SDR unified platform software, LTE adaptor software and LTE application software, as shown in Figure 7. FIGURE 7 PRODUCT SOFTWARE STRUCTURE

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Chapter 1 Product Overall Description

SDR Unified Platform Software

LTE Adaptor Software

Application Layer

SDR unified platform software provides the functions of Board Support Package (BSP), Operation Support Sub-system (OSS) and Bearer Sub-system (BRS). �

BSP provides the device interface to the OS (Operating System).

�

OSS is the support layer in this entire framework, which is a hardware independent platform for running software and provides basic functions like scheduling, timer, memory management, communication, sequencing control, monitoring, alarming and logging.

�

BRS provides the IP communication function for inter-boards and internetwork elements.

LTE adaptor software accomplishes the functions of Operating Administration and Maintenance (OAM), and Data Base Sub-system (DBS). �

OAM provides the configuration, alarm and performance measurement function for LTE eNodeB.

�

DBS is the database system.

The application layer provides LTE functions of Radio Network Layer Control plane (RNLC)), Radio Network Layer User plane (RNLU), MAC Uplink Scheduler (MULSD), MAC Downlink Scheduler (MDLSD), and Physical layer (PHY). �

RNLC provides radio control plane’s common and dedicated resource management and controlling.

�

RNLU provides user plane function.

�

MULSD provides uplink MAC scheduling.

�

MDLSD provides downlink MAC scheduling.

�

PHY provides LTE PHY function.

1.10 Operation and Maintenance Introduction The operation and management of ZXSDR B8200 L200 is performed by the ZTE unified network management system, NetNumen M31. NetNumen™ M31 is located in EML layer, which provides management for the whole network of 2G/3G or EPC. The position of NetNumenTM M31 is as shown in Figure 8.

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ZXSDR B8200 (L200) Principle and Hardware Structure Training Manual

FIGURE 8 POSITION OF NETNUMENTM M31

NetNumenTM M31 provides powerful functions to meet operators’demands: 1. Performance management NetNumenTM M31 supports numerous performance management counters and KPIs. The performance management includes following important features: �

�

� �

� �

Measurement task management: provides tools to measure the user required data. QoS task management: user can set QoS job to monitor network performance. Performance data management. Performance KPI: supports adding, modifying and deleting of the performance KPI item, querying of the KPI data. Performance graphic analysis Performance report: the reports can be exported into Excel/PDF/HTML/TXT files.

2. Fault management The function of the fault management is as follows: � �

�

Monitor the real time working status of the equipments. Inform the users about the real time faults occurred by multiple alarming methods, such as alarm information display and solutions for common faults, and alarm sounds and colors. Faults can be oriented and corrected by analyzing the alarm information.

3. Configuration management The Configuration Management provides the following configuration tools to configure the network elements. �

12

Adding, deleting, modifying, comparing and viewing NE data.

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Chapter 1 Product Overall Description

�

Configuration data download/upload.

�

Configuration data comparison.

�

Configuration data output/input.

�

Configuration data audit.

�

Dynamic data management.

�

Time synchronization.

4. Log management The operation log records all the operations initiated by users on clients and executed on servers. The supported logs include: � �

�

Security log: login information, such as login and logout. Operation log: operation information, such as the addition/deletion of NE, modification of NE parameters, and so on. System log: synchronize alarm with NE, data backup and so on.

NetNumenTM M31 records the origination of the subscriber’s login, operation commands and execution results. It also provides further manipulation functions on the recorded log records. Main functions of the Log Management are as follows: �

�

�

Query operation logs: provides operation logs search and query functions. Delete operation logs: provides operation logs deletion function based on date and time. Auto delete operation logs: automatically deletes the operation logs after the user defined time frame.

5. Security management The security management accomplishes login authentication and operation authentication. Security management ensures the legal usage of the system. 6. eRRU OAM ZXSDR B8200 L200 configures eRRU according to configuration data and forward eRRU’s management command from NetNumenTM M31 and collects eRRU’s alarm, performance information. 7. SON functions SON functions can help to perform some network planning, configuration, optimization and healing processes automatically, to lower OPEX by reducing manual involvement in such tasks.

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ZXSDR B8200 (L200) Principle and Hardware Structure Training Manual

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Chapter 2 Working Principles After you have completed this chapter, you will know: >> Relevant Protocols >> Control Signal Data Flow >> User Service Data Flow >> Clock Data Flow >> Clock Data Flow

2.1 Relevant Protocols Control Plane Protocol Stack Structure

The control plane stack includes: �

PDCP sublayer

�

RLC sublayer

�

MAC sublayer

�

RRC sublayer

�

NAS sublayer

Figure 9 shows the control plane protocol stack. FIGURE 9 CONTROL PLANE PROTOCOL STACK

�

�

PDCP sublayer �

Ciphering and integrity protection

�

Transfer of control plane data

RLC sublayer �

Transfer of upper layer PDUs

�

Error correction through ARQ (only for AM data transfer)

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ZXSDR B8200 (L200) Principle and Hardware Structure Training Manual

�

�

�

�

�

Protocol error detection and recovery

�

RLC SDU discard (only for UM and AM data transfer)

�

RLC re-establishment

MAC sublayer Mapping between logical channels and transport channels Multiplexing/demultiplexing of MAC SDUs belonging to one or different logical channels into/from transport blocks (TB) delivered to/from the physical layer on transport channels

�

Scheduling information reporting

�

Error correction through HARQ

�

Priority handling between logical channels of one UE

�

User Plane Protocol Stack Structure

In-sequence delivery of upper layer PDUs (only for UM and AM data transfer) Duplicate detection (only for UM and AM data transfer)

�

�

Re-segmentation of RLC data PDUs (only for AM data transfer)

�

�

�

Concatenation, segmentation and reassembly of RLC SDUs (only for UM and AM data transfer)

Priority handling between UEs by means of dynamic scheduling

�

MBMS service identification

�

Transport format selection

�

Padding

RRC sublayer �

Broadcast

�

Paging

�

RRC connection management

�

RB control

�

Mobility functions

�

UE measurement reporting and control

NAS sublayer �

EPS bearer management

�

Authentication

�

ECM-IDLE mobility handling

�

Paging origination in ECM-IDLE

�

Security control

The user plane stack includes: �

PDCP sublayer

�

RLC sublayer

�

MAC sublayer

Figure 10 shows the user plane protocol stack.

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Chapter 2 Working Principles

FIGURE 10 USER PLANE PROTOCOL STACK

�

PDCP sublayer (packet data convergence layer) �

Header compression and decompression: ROHC only

�

Transfer of user data

�

�

�

Duplicate detection of lower layer SDUs at PDCP re-establishment procedure for RLC AM

�

Retransmission of PDCP SDUs at handover for RLC AM

�

Ciphering and deciphering

�

Timer-based SDU discard in uplink

RLC sublayer �

Transfer of upper layer PDUs

�

Error correction through ARQ (only for AM data transfer)

�

�

�

�

In-sequence delivery of upper layer PDUs at PDCP re-establishment procedure for RLC AM

Concatenation, segmentation and reassembly of RLC SDUs (only for UM and AM data transfer) Re-segmentation of RLC data PDUs (only for AM data transfer) In-sequence delivery of upper layer PDUs (only for UM and AM data transfer)

�

Duplicate detection (only for UM and AM data transfer)

�

Protocol error detection and recovery

�

RLC SDU discard (only for UM and AM data transfer)

�

RLC re-establishment

MAC sublayer � �

Mapping between logical channels and transport channels Multiplexing/demultiplexing of MAC SDUs belonging to one or different logical channels into/from transport blocks (TB) delivered to/from the physical layer on transport channels

�

Scheduling information reporting

�

Error correction through HARQ

�

Priority handling between logical channels of one UE

�

Priority handling between UEs by means of dynamic scheduling

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ZXSDR B8200 (L200) Principle and Hardware Structure Training Manual

�

MBMS service identification

�

Transport format selection

�

Padding

2.2 Control Signal Data Flow eNodeB side protocols are divided into two parts: user plane protocol and control plane protocol. System control signal comes to MME after processing by control plane protocols. System control signal flow is shown in Figure 11. FIGURE 11 CONTROL SIGNAL DATA FLOW

1. Uplink common control signaling flow i.

Uplink PHY on BPL board receives UL common control signaling via LTE-Uu interface.

ii.

PHY layer performs decoding and demodulation and maps to the corresponding cell according to global logic indication of the cell.

iii. RNLU performs MAC protocol processing, RLC protocol processing, then is sent to GE switch through GE and switched to RRC signaling protocol processing module of RNLC. 2. Downlink common control signaling flow

18

i.

Contrary to uplink common control signaling flow, downlink common control signaling flow is switched to RNLU on baseband board by GE switch to perform RLC and MAC protocols processing via RRC protocol processing module on CC board.

ii.

Signaling is switched to downlink PHY to perform coding and modulation and finally sent to eRRU via CPRI interface and mapped to the antenna port for transmission.

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Chapter 2 Working Principles

2.3 User Service Data Flow eNodeB protocols are divided into two parts: user plane protocol and control plane protocol. Service data signal comes to S-GW after processing by user plane protocols. User service data flow is as shown in Figure 12. FIGURE 12 USER SERVICE FLOW

1. Downlink data flow When data from the S1 interface arrives at BPL board: i.

ii.

GTPU module analyzes the GTPU data, discards the GTPU header, and then forwards it to PDCP/RLC/MAC for encryption, fragment and scheduling, forwards data to downlink PHY. Downlink PHY performs channel coding, scramble, FFT and IFFT, generates IQ data, and then forwards baseband IQ data to eRRU, eRRU performs power amplify, frequency transformation, forms high frequency signal, transmits high frequency signal through antenna over the air.

2. Uplink data flow i.

Uplink PHY receives the antenna data from UE, and send data to RNLU after corresponding processing.

ii.

RNLU extracts various uplink control elements from the data, and then the dedicated data part are encapsulated into GTPU PDU through MAC/RLC/PDCP protocols processing.

iii. The processed data is forwarded CC board, and then CC board achieves data forwarding according to the destination address of GTPU PDU and sends the uplink data to SGW.

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ZXSDR B8200 (L200) Principle and Hardware Structure Training Manual

2.4 Clock Data Flow CC board delivers system clock signal to all the other boards, clock signal is sent to eRRU through fiber interface. The clock data flow is as shown in Figure 13. FIGURE 13 CLOCK DATA FLOW

2.5 Clock Data Flow CC board delivers system clock signal to all the other boards, clock signal is sent to eRRU through fiber interface. The clock data flow is as shown in Figure 14. FIGURE 14 CLOCK DATA FLOW

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Chapter 3 Technical Indices After you have completed this chapter, you will know: >> Physical Indices >> Capacity >> Power Supply >> Power Consumption >> Grounding Index >> Interface Indices >> Working Environment Indices >> Electromagnetic Compatibility Indices >> Reliability Indices

3.1 Physical Indices Dimension Weight

88.4 mm x 482.6 mm x 197 mm (HxWxD). The weight of ZXSDR B8200 L200 depends on baseband configuration. Table 3 describes the state of typical configuration. The weight of ZXSDR B8200 L200 is less than 7.5 Kg. TABLE 3 PRODUCT WEIGHT

Item

LTE Typical Configuration

Weight (Kg)

Rack

3

1

PM

0.5

1

SA

0.25

1

FS

0.5

0

BPL

0.5

1

CC

0.5

1

FAN

0.5

1

Total weight

5.25

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ZXSDR B8200 (L200) Principle and Hardware Structure Training Manual

3.2 Capacity One BPL can support 1200 RRC connections, and the throughput of BPL is 200 Mbps(DL)/75 Mbps(UL).

3.3 Power Supply The power supply requirement to ensure the normal operation of the ZXSDR B8200 L200 is -48V DC (voltage range: - 57V ~ - 40V).

3.4 Power Consumption The power consumption depends on traffic load, board configuration and ambient temperature. The Table 4 lists the power consumption of all kinds of boards and focuses on the typical power consumption of ZXSDR B8200 L200 with normal ambient temperature. TABLE 4 TYPICAL POWER CONSUMPTION Item

Power consumption (W)

Typical configuration

PM

1

10

SA

1

5

FAN

1

30

BPL

1

55

CC

1

25

Total power consumption

125 W

Note: The overall power consumption mainly depends on boards or modules configuration.

3.5 Grounding Index The grounding resistance of the equipment room where the ZXSDR B8200 L200 is installed should be equal to or less than 5 Ω. In the areas where the annual lightening days are less than twenty days, the grounding resistance can be less than 10 Ω.

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Chapter 3 Technical Indices

3.6 Interface Indices ZXSDR B8200 L200 interface indices are shown in Table 5. TABLE 5 PRODUCT INTERFACE INDICES Item

Connector Type

Interface

BPL

3x optical interfaces

SFP (LC)

CC

1xGE, 2xFE

2 RJ45 for Electrical and one SFP (LC) for optical

1xEXT

RS485 can be used to connect with other external receiver.

1xGPS

SMA

6x optical interfaces

SFP(LC)

FS

Note: The speed of BPL optical interfaces can adapts to 2.4576 Gbps, 3.072 Gbps, 4.9152 Gbps. The speed of FS optical interfaces can adapts to 2.4576 Gbps and 3.072 Gbps.

3.7 Working Environment Indices The working environment indices are illustrated in Table 6. TABLE 6 PRODUCT WORKING ENVIRONMENT INDICES Item Temperature

Requirement Long-term: -15~ +50 ℃ Short-term: -25 ~ +55 ℃

Relative Humidity

Long-term: 5% ~ 95% Short-term: 5% ~ 100%

Protection classification

Be compliant with IP20

Emission and Immunity

ETSI EN 300 386 ETSI TS 125 113

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ZXSDR B8200 (L200) Principle and Hardware Structure Training Manual

Item

Requirement

Ground

≤5 Ω. earth resistance can be less than 10 Ω in thunder-less area which has thunderstorm days less than 20.

Storage

Indoor pack Deposited temperature: -45 ℃ ~ 70 ℃ Relative Humidity: 10% ~ 90%

Mechanical vibration

ETSI 300019-1-4 ClassM4.1

3.8 Electromagnetic Compatibility Indices ZXSDR B8200 L200 electromagnetic compatibility indices are shown in Table 7. TABLE 7 PRODUCT ELECTROMAGNETIC COMPATIBILITY INDICES Item

Requirement

Anti-static protection

Capable of protecting against the contact discharge of ±6000 V, Air discharge of ±8000 V

Surge antiinterference

±2000 V between lines and the ground

3.9 Reliability Indices In ZXSDR B8200 L200, the algorithm of system reliability conforms to IEC TR62390 standards, The detailed reliability indices are illustrated in Table 8. TABLE 8 PRODUCT RELIABILITY INDICES Item

24

Value

MTBF

≥233000 hours

MTTR

0.5 hour

Availability

≥99.999785%

Down duration

≤1.128 min/year

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Chapter 4 Boards After you have completed this chapter, you will know: >> Overview >> CC Board >> BPL Board >> SA Board >> FAN Module >> PM Board

4.1 Overview ZXSDR B8200 L200 board can be classified into the following types: �

Control and clock board: CC

�

Fabric switch board: FS

�

Baseband pool board: BPL

�

Power module: PM

�

Site alarm module: SA

�

Fan module: FAN

ZXSDR B8200 L200 typical boards configuration is as shown in Table 9. TABLE 9 TYPICAL BOARD CONFIGURATION Board

Number

Description

CC

1

Control and clock board

BPL

1 or 3

Baseband processing for LTE board

PM

1

Power module

FAN

1

Fan module

SA

1

Site Alarm board

ZXSDR B8200 L200 also supports boards/modules configurations listed below: �

1xCC, 3xBPL, 2xPM, 1xFAN, 1xSA

�

2xCC, 3xBPL, 2xPM, 1xFAN, 1xSA, 1xFS

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ZXSDR B8200 (L200) Principle and Hardware Structure Training Manual

4.2 CC Board 4.2.1 CC Board Function ZXSDR B8200 L200 can be configured with maximum 2 CC boards for 1+1 redundancy. There are three main functional modules: a GE switch module, a GPS and clock module, and a transmission module. GE switch module

The GE switch module is made as a switching network between CC board and baseband processing board. User data, control and maintenance signals between CC board and baseband processing board are all transmitted through this module.

GPS and Clock module

The GPS receiver can be integrated in CC board. The GPS and Clock module support following functions:

Transmission modules

Other Function

�

Synchronizing with various external reference clocks, including the GPS clock and the clock provided by BITS, IEEE 1588, etc.

�

Generating and delivering the clock signal to other modules.

�

Providing GPS receiver interface and managing the GPS receiver.

�

Providing a real-time timing for system operation and maintenance; the real-time timing can be calibrated by O&M or GPS.

Transmission modules support following functions: �

Implementing data switching for service data and control flow within the system.

�

S1/X2 interface protocol processing.

�

Supporting primary/slave boards hot backup.

�

Provide GE/FE physical interfaces.

CC board provide other function besides previously mentioned ones: �

Managing software versions of boards and programmable components, and supporting local and remote software upgrade.

�

Monitoring, controlling and maintaining of the base station system, providing LMT interface.

�

Supervising the running status of each board within the system.

�

Inventory management.

4.2.2 CC Board Front Panel CC board font panel is as shown in Figure 15.

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Chapter 4 Boards

FIGURE 15 CC BOARD FRONT PANEL

4.2.3 CC Board Panel Indicators Table 10 describes indicators on CC panel. TABLE 10 CC INDICATOR DESCRIPTION LED

Color

Meaning

Description

RUN

Green

Indicates the running state

� � � �

�

�

� ALM

Red

Indicates the alarm

� � �

MS

Green

Indicates the active/standby state

� �

On: CC starts to run and tries to obtain the logical address Blinking slowly (on for 1.5 s and off for 1.5 s): Basic process of the CC is being powered on Blinking normally (on for 0.3 s and off for 0.3 s): CC is already powered on and works normally Blinking slowly (on for 2 s and off for 2 s): CC is performing the active/standby pre-switching in the case of two CCs Blinking slowly (on for 1 s and off for 1 s): CC is performing the active/standby switching in the case of two CCs Blinking quickly (on for 70 ms and off for 70 ms): Communication between the active CC and OMP or standby CC failed Off: Indicates that the self-check fails Blinking periodically (5 Hz): Indicates that critical and major alarms are generated Blinking periodically (1 Hz): Indicates that minor and warning alarms are generated Off: Indicates that no alarms are generated On: Indicates that the board is at active state Off: Indicates that the board is at standby state

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ZXSDR B8200 (L200) Principle and Hardware Structure Training Manual

LED

Color

Meaning

Description

REF

Green

Indicates the GPS antenna state or 2 MHz status. It also shows the connection states of the SMA port on the corresponding panel.

� �

�

�

� �

ETH0

Green

Indicates the link states of the ETH0 interface.

�

�

ETH1

E0S

Green

Green

Indicates the link states of the ETH1 interface.

�

Indicates 0~3 E1/T1 link states

�

�

�

�

�

28

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On: Indicates that the antenna feeder system works normally Off: Indicates that the antenna feeder system and the satellite work normally and are being initialized Blinking slowly (on for 1.5s and off for 1.5s): Indicates that the antenna feeder system is disconnected Blinking quickly (on for 0.3s and off for 0.3s): Indicates that the antenna feeder system works normally but can not receive signals from the satellite Blinking slowly (on for 2.5s and off for 2.5s): The antenna is disconnected Blinking quickly (on for 70 ms and off for 70 ms): Indicates that no messages are received during the initialization On: Indicates that the physical link of S1/X2/OMC network port (electrical port, or optical port) is normal Off: Indicates that the physical link of S1/X2/OMC network port is broken On: Indicates that the physical link of DEBUG/CAS/LMT interface is normal Off: Indicates that physical link of DEBUG/CAS/LMT interface is broken During the first second, blinking one time means the first E1 is normal. Off means the E1 is not available. During the third second, blinking two times means the second E1 is normal. Off means the E1 is not available. During the fifth second, blinking three times means the third E1 is normal. Off means the E1 is not available. During the seventh second, blinking four times means the fourth E1 is normal. Off means the E1 is not available.

Chapter 4 Boards

LED

Color

Meaning

Description

E1S

Green

Indicates 4~7 E1/T1 link states

�

�

�

�

E2S

Green

Indicates 8~11 E1/T1 link states

�

�

�

�

E3S

Green

Indicates 12~15 E1/T1 link states

�

�

�

�

HS

-

-

During the first second, blinking one time means the fifth E1 is normal. Off means the E1 is not available. During the third second, blinking two times means the sixth E1 is normal. Off means the E1 is not available. During the fifth second, blinking three times means the seventh E1 is normal. Off means the E1 is not available. During the seventh second, blinking four times means the eighth E1 is normal. Off means the E1 is not available. During the first second, blinking one time means the ninth E1 is normal. Off means the E1 is not available. During the third second, blinking two times means the tenth E1 is normal. Off means the E1 is not available. During the fifth second, blinking three times means the eleventh E1 is normal. Off means the E1 is not available. During the seventh second, blinking four times means the twelfth E1 is normal. Off means the E1 is not available. During the first second, blinking one time means the thirteenth E1 is normal. Off means the E1 is not available. During the third second, blinking two times means the fourteenth E1 is normal. Off means the E1 is not available. During the fifth second, blinking three times means the fifteenth E1 is normal. Off means the E1 is not available. During the seventh second, blinking four times means the sixteenth E1 is normal. Off means the E1 is not available.

Reserved

4.2.4 CC Board Panel Interface Table 11 describes the interfaces on the CC panel.

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ZXSDR B8200 (L200) Principle and Hardware Structure Training Manual

TABLE 11 CC BOARD PANEL INTERFACE Description

Interface ETH0

ETH0 is used for S1/X2 connection. It is an Ethernet electrical interface (Adaptive to 100 M/1000 M automatically). ETH0 and TX/RX interfaces are exclusively used to each other.

DEBUG/CAS/LMT

DEBUG/CAS/LMT is used for eBBU cascading, debugging, and local maintenance. ETH1 is an Ethernet electrical interface (Adaptive to 10 M/100 M/1000 M automatically).

TX/RX

TX/RX is used for S1/X2 connection. It is an Ethernet optical interface (supports 1000 BASE-LX/SX or 100 BASE-FX). TX/RX and ETH0 interfaces are exclusively used to each other.

EXT

EXT is mainly used for external GPS receiver or clock extension.

REF

REF is used for GPS antenna interface or BITS clock interface.

USB

Data updating.

4.2.5 CC Board Button RST and M/S,two buttons are there on CC board front panel. RST

RST is used to reset CC board.

M/S

M/S is used to make active/standby switch.

4.3 BPL Board 4.3.1 BPL Board Function ZXSDR B8200 L200 can be installed with 1 to 3 BPL boards. One BPL can deal with 20 MHz LTE bandwidth with 3 cells and this configuration can meet the requirements of most operators. BPL processes LTE baseband protocol specified by 3GPP R8. BPL board’s main functions are:

30

�

Processing physical layer protocol.

�

Providing uplink/downlink I/Q signal.

�

Processing MAC, RLC and PDCP protocol.

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Chapter 4 Boards

4.3.2 BPL Board Front Panel BPL board front panel is as shown in Figure 16. FIGURE 16 BPL BOARD FRONT PANEL

4.3.3 BPL Board Panel Indicators Table 12 describes BPL board panel indicators. TABLE 12 BPL BOARD PANEL INDICATORS LED

Color

Meaning

Description

RUN

Green

Board running state

� � � �

ALM

Red

Board alarm

� � � �

Always ON: BPL is at powering on stage Blinking periodically (0.5 Hz): BPL is downloading software Blinking periodically (0.3 s ON, 0.3 s OFF): BPL working state is normal OFF: BPL power on failed Blinking periodically (70 ms ON, 70 ms OFF): Critical and major alarms are generated Blinking periodically (1500 ms ON, 1500 ms OFF): Minor and warning alarms are generated Always ON: BPL self-check failed Off: No alarms are generated

HS

-

-

Reserved

BLS

Green

Backplane link state

� � �

BSA

Green

Board running state

� � � �

Blinking periodically (1 Hz): TDM physical links between BPL board and FS board are normal Always ON: TDM physical links between BPL board and FS board are abnormal OFF: There is no TDM signal Blinking periodically (1 Hz): Physical links between CPU and DSP are normal Blinking periodically (2 Hz): Physical links between CPU and DSP are abnormal Always ON: SRIO SW ACKID error OFF: Physical links between CPU and DSP are broken

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ZXSDR B8200 (L200) Principle and Hardware Structure Training Manual

LED

Color

Meaning

Description

LNK

Green

Ethernet link states

� �

CST

OF0~ OF2

Green

Green

CPU running state

�

Optical interface running state

�

�

� �

Blinking periodically (1 Hz): Ethernet physical links between BPL and CC are normal OFF: Ethernet physical links between CPU and DSP are broken are broken Blinking periodically (1 Hz): CPU runs normally OFF: CPU runs abnormally Blinking periodically (1 Hz): Optical interface runs normally Always ON: Optical interface runs abnormally Off: Los of signal

4.3.4 BPL Panel Interfaces There are 3 pairs of optical interfaces on the BPL board, which are mainly used to connect to eRRU.

4.3.5 BPL Board Button RST button is used to reset BPL board.

4.4 SA Board 4.4.1 SA Board Function ZXSDR B8200 L200 is configured with 1 Site Alarm (SA) board. The board will be managed by CC board. The main function of SA board are:

32

�

Responsible for fan speed control and alarming.

�

Providing external interfaces.

�

Monitoring serial interface.

�

Monitoring boards’ temperature.

�

Providing dry contacts and the lightening protection for the external interfaces.

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Chapter 4 Boards

4.4.2 SA Board Front Panel SA board front panel is as shown in Figure 17. FIGURE 17 SA BOARD FRONT PANEL

4.4.3 SA Board Panel Indicators Table 13 describes SA board panel indicators. TABLE 13 SA BOARD PANEL INDICATORS LED

Color

Meaning

Description

RUN

Green

Board running state

� � �

ALM

Red

Board alarm state

� �

Always ON: Indicates that SA board is at reset state. Blink (on for 0.3 s and off for 0.3 s repeatedly: Indicates that SA board runs normally Off: Indicates that SA board self-check failed. Always ON: Indicates that alarms are generated on SA board. Off: Indicates that no alarm is generated on SA board.

4.4.4 SA Board Panel Interfaces There is one RS485/232 interface on SA board panel, which is mainly used as monitoring.

4.5 FAN Module 4.5.1 FAN Module Function ZXSDR B8200 L200 is configured with 1 Fan Module(FAN). The main functions of FAN are: �

Fan speed auto-adjustment according to the equipment working temperature.

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ZXSDR B8200 (L200) Principle and Hardware Structure Training Manual

�

Monitor, control and fan state reporting.

4.5.2 FAN Module Front Panel FAN module front panel is as shown in Figure 18. FIGURE 18 FAN MODULE FRONT PANEL

4.5.3 FAN Module Panel Indicators Table 14 describes FAN Module panel indicators. TABLE 14 FAN MODULE PANEL INDICATORS LED

Color

Meaning

Description

RUN

Green

Running state

� � �

ALM

Red

Alarm state

Always ON: FAN is powered on and is not controlled by SA board. Blinking (on for 0.3 s and off for 0.3 s): FAN is controlled by SA board. Off: FAN is not powered on.

If ALM indicator is ON: � �

If RUN LED is on, it indicates that FAN is powered on and is not controlled by SA board. If RUN LED is blinking normally (ON for 0.3 s and OFF for 0.3 s), it indicates that FAN module works abnormally.

If ALM indicator is OFF:

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Chapter 4 Boards

LED

Color

Meaning

Description � �

If RUN LED is OFF, it indicates that FAN is not powered ON. If RUN LED is blinking normally (ON for 0.3 s and OFF for 0.3 s), it indicates that FAN works normally.

4.6 PM Board 4.6.1 PM Board Function Power Module (PM) is in charge of the presence state detection of all the other boards, providing or removing the power to or from the other boards. ZXSDR B8200 L200 can be configured with 2 PMs, working with 1+1 redundancy mode, or load-balancing when the power consumption of the eBBU frame is beyond the rated output power of a single PM. PM has the following functions: �

Providing two kinds of DC output voltage: 3.3 V for Management Power (MP) and 12 V for Payload Power (PP).

�

Reset all of the other boards in eBBU frame under the control of man-machine commands.

�

Detecting the presence/absence state of all the other boards in eBBU frame.

�

Providing protection of input over-voltage/under-voltage.

�

Providing protection of output over-current and overload power management.

4.6.2 PM Board Front Panel PM board front panel is as shown in Figure 19. FIGURE 19 PM BOARD FRONT PANEL

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ZXSDR B8200 (L200) Principle and Hardware Structure Training Manual

4.6.3 PM Board Panel Indicators Table 15 describes PM board panel indicators. TABLE 15 PM BOARD PANEL INDICATORS LED

Color

Meaning

Description

RUN

Green

Board running state

� � � �

ALM

Red

Board alarm state

� �

Always ON: Board is at reset state Blinking periodically (1 Hz): Board runs normally Blinking periodically (2 Hz): Communicates normally between with PM board and CC board Off: Board self-check failed. Always ON: Alarms are generated on PM board. Off: No alarm is generated on PM board.

4.6.4 PM Board Panel Interfaces PM board panel interfaces are illustrated in Table 16. TABLE 16 PM BOARD PANEL INTERFACES Description

Interface

36

MON

Debugging interface, RS232 interface

-48V/-48VRTN

-48V input

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Chapter 5 Cables After you have completed this chapter, you will know: >> DC Power Cable >> PE Cable >> S1/X2 Cable >> RF Cable >> Dry Contact Cable >> GPS Jumper

5.1 DC Power Cable DC power cable is used for connecting ZXSDR B8200 L200 to external power distributed unit. The overall appearance of DC power cable is as shown in Figure 20. FIGURE 20 DC POWER CABLE

Table 17 describes the cable signal relations of DC power cable. TABLE 17 CABLE SIGNAL RELATION Name

Signal Description

End A

End B

-48 V RTN

Voltage: 0 VDC

A1

Black conductor

-48 V

Voltage: -48 VDC

A2

Blue conductor

5.2 PE Cable PE cable is used for connecting ZXSDR B8200 L200 to the grounding network, so as to provide protection and ensure personal safety. PE cable is a 16 mm2 yellow-green cable with TNR terminals at both ends. The PE cable overall appearance is as shown in Figure 21.

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ZXSDR B8200 (L200) Principle and Hardware Structure Training Manual

FIGURE 21 PE CABLE APPEARANCE

5.3 S1/X2 Cable S1/X2 cable is used for connecting ZXSDR B8200 L200 to core network, or peer eNodeB, or transport devices. It can either be Ethernet cable or optical fiber. S1/X2 Optical Fiber

S1/X2 optical fiber can either be single-mode or multi-mode, and it adopts LC type connector. The cable overall appearance is as shown in Figure 22. FIGURE 22 S1/X2 CABLE APPEARANCE

S1/X2 Ethernet Cable

The overall S1/X2 Ethernet cable is as shown in Figure 23. FIGURE 23 S1/X2 ETHERNET CABLE

Table 18 illustrates the Ethernet cable signal relations. TABLE 18 ETHERNET CABLE SIGNAL RELATIONS End A

38

Color

Definition

End B

1

ETH-TR1+

White/Orange

1

2

ETH-TR1-

Orange

2

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Chapter 5 Cables

End A

Color

Definition

End B

3

ETH-TR2+

White/Green

3

4

ETH-TR3+

Green

4

5

ETH-TR3-

White/Blue

5

6

ETH-TR2-

Blue

6

7

ETH-TR4+

White/Brown

7

8

ETH-TR4-

Brown

8

Note: OMC maintenance cable adopts the same signal relation as described in S1/X2 Ethernet cable.

5.4 RF Cable RF cable is used for connecting ZXSDR B8200 L200 to eRRU. The overall appearance of RF cable is as shown in Figure 24. FIGURE 24 RF CABLE APPEARANCE

End A is used for connecting to eRRU and end B used for connecting to ZXSDR B8200 L200.

5.5 Dry Contact Cable Dry contact cable is used for connecting ZXSDR B8200 L200 to external monitoring device, and thus receive dry contact data from external device or send dry contact data to external device. Dry contact cable overall appearance is as shown in Figure 25. End A of the cable is DB25 connector.

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ZXSDR B8200 (L200) Principle and Hardware Structure Training Manual

FIGURE 25 DRY CONTACT CABLE APPEARANCE

Table 19 describes the signals of an input dry-contact cable. TABLE 19 DRY CONTACT CABLE SIGNALS RELATION Signal

Pin ( End A)

Color

I_SWIO0

1

White

GND

14

Blue

I_SWIO1

2

White

GND

15

Orange

I_SWIO2

3

White

GND

16

Green

I_SWIO3

4

White

GND

17

Brown

I_SWIO4

5

Red

GND

18

Blue

I_SWIO5

6

Red

GND

19

Orange

B_SWIO1

7

Red

GND

20

Green

B_SWIO2

8

Red

GND

21

Brown

–

9

–

–

22

–

–

10

–

–

23

–

1. 2.

B_SWIO1~B_SWIO2 indicates channels 1-2 dry-contact input/output I_SWIO0–I_SWIO5 indicates the channels 1-6 dry-contact input

5.6 GPS Jumper GPS feeder jumper is used for connecting ZXSDR B8200 L200 to GPS antenna.

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Chapter 5 Cables

There are two types of GPS feeder jumper: SMA(M)-N(M) and SMA(M)-SMA(M). SMA(M)-N(M) is used for connecting to the lightning arrester and SMA(M)-SMA(M) used for connecting to the power splitter. GPS Jumper is as shown in Figure 26. FIGURE 26 GPS JUMPER

1. 2.

The top figure is the SMA(M)-N(M) , connects to the lightning arrester The bottom figure is the SMA(M)SMA(M), connects to the power splitter.

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41