RAN12 0 BSC6900 Product Description V1 0

RAN12.0 BSC6900 Product Description

Issue V1.0

Date 2009-12-15

HUAWEI TECHNOLOGIES CO., LTD.

Copyright © Huawei Technologies Co., Ltd. 2009. All rights reserved. No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Huawei Technologies Co., Ltd. Trademarks and Permissions

and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd. All other trademarks and trade names mentioned in this document are the property of their respective holders. Notice The purchased products, services and features are stipulated by the commercial contract made between Huawei and the customer. All or partial products, services and features described in this document may not be within the purchased scope or the usage scope. Unless otherwise agreed by the contract, all statements, information, and recommendations in this document are provided “AS IS” without warranties, guarantees or representations of any kind, either express or implied. The information in this document is subject to change without notice. Every effort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendations in this document do not constitute the warranty of any kind, express or implied.

Huawei Technologies Co., Ltd.

Address: Huawei Industrial Base Bantian, Longgang Shenzhen 518129 People's Republic of China

Website: http://www.huawei.com

Email: [email protected]

http://www.huawei.com

mailto:[email protected]


Issue V1.0 (2009-12-15) Huawei Technologies Propriety

Copyright © Huawei Technologies Co., Ltd.

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Contents

1 Introduction .............................................................................................................................. 4 1.1 Positioning .................................................................................................................................................4 1.2 Benefits ......................................................................................................................................................5

2 Architecture .............................................................................................................................. 7 2.1 Overview ...................................................................................................................................................7 2.2 Hardware Architecture ................................................................................................................................7 2.3 Software Architecture ............................................................................................................................... 12 2.4 Reliability ................................................................................................................................................ 13

3 Configurations........................................................................................................................ 16 3.1 Overview ................................................................................................................................................. 16 3.2 Configuration Specifications ..................................................................................................................... 16

4 Operation and Maintenance ................................................................................................. 19 4.1 Overview ................................................................................................................................................. 19 4.2 Benefits .................................................................................................................................................... 20

5 Technical Specifications ....................................................................................................... 23 5.1 Technical Specifications ........................................................................................................................... 23 5.2 Compliance Standards .............................................................................................................................. 26

6 Acronyms and Abbreviations............................................................................................... 29




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1 Introduction

1.1 Positioning This product description is applicable to the BSC6900 V900R012.

With the rapid development of mobile communications technologies, multiple network systems come into coexistence. In this situation, the network operators worldwide have to deploy different networks and thus pay high capital expenditure (CAPEX) and operation expenditure (OPEX). Therefore, the industry has been focusing on the convergence of multiple network systems to reduce the expenditures of the operators.

The BSC6900 is an important network element (NE) of Huawei Single RAN solution. It adopts the industry-leading multiple radio access technologies (RATs), IP transmission mode, and modular design. In addition, it is integrated with the functions of the UMTS RNC and GSM BSC, thus efficiently maintaining the trend of multi-RAT convergence in the mobile network.

The BSC6900 can be flexibly configured as a BSC6900 GSM, BSC6900 UMTS, or BSC6900 GU as required in different networks. The BSC6900 UMTS, in compliance with the 3GPP R8, operates as an independent NE to access the UMTS network and performs the functions of the UMTS RNC.

This document describes the BSC6900 UMTS only.

Figure 1-1 shows the BSC6900 UMTS.

Figure 1-1 BSC6900 UMTS




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The BSC6900 UMTS connects to the core network and manages the UMTS NodeBs. Figure 1-2 shows the position of the BSC6900 UMTS in the network.

Figure 1-2 Position of the BSC6900 UMTS in the network

Iub

CBC

UE

BSC6900 UMTS

NodeB

NodeB

CS core network

Iu-CS

Iu-PS

Iu-BCNodeBUu

RNC

PS core network

Iur

The interfaces between the BSC6900 UMTS and each NE in the UMTS network are as follows:

l Iub: the interface between the BSC6900 UMTS and the NodeB l Iur: the interface between the BSC6900 UMTS and the RNC l Iu-CS: the interface between the BSC6900 UMTS and the Mobile Switching Center

(MSC) or Media Gateway (MGW) l Iu-PS: the interface between the BSC6900 UMTS and the Serving GPRS Support Node

(SGSN) l Iu-BC: the interface between the BSC6900 UMTS and the Cell Broadcast Center (CBC)

These interfaces are standard interfaces, through which equipment from different vendors can be interconnected.

The main functionalities of the BSC6900 UMTS are radio resource management, base station management, power control, and handover control.

1.2 Benefits

High Integration and Low Cost The BSC6900 UMTS caters to the mobile network requirements for high capacity with few sites, thus requiring less space in the equipment room and reducing power consumption. In addition, the BSC6900 UMTS meets the increasing requirements for packet service growth and protects the equipment investment of the operator.




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Easy Configuration and Convenient Maintenance The BSC6900 UMTS has a small variety of boards, such as interface processing boards, OM boards, switching processing boards, signaling processing boards, service processing boards, and clock processing boards. The simplification of board types reduces the maintenance cost. The interface processing boards and service processing boards are flexible in configuration and easy to maintain and expand because they are not bound.

All-IP Platform Meeting the Varying Needs for Network Evolution Based on its all-IP platform, the PS service performance of the BSC6900 UMTS is improved. The interfaces support IP transmission, which provides sufficient bandwidth and saves transmission cost. Based on the unified all-IP platform in the UMTS and GSM networks, the BSC6900 UMTS conforms to the growing trend of broadband in the radio network and meets the requirements for network convergence and evolution.

Advanced Radio Data Service Solution and Improved User Experience HSPA+ Phase2 is a new feature in the RAN12.0. On the basis of HSPA+ Phase1, HSPA+ Phase2 is added with the following functions: 64QAM + MIMO, Dual-Carrier HSDPA (DC-HSDPA), uplink (UL) 16QAM, HSUPA, HSUPA UL interference cancellation, UL enhanced L2, and 128 HSPA users per cell. These functions help increase spectrum utilization, expand the network capacity, and improve user experience. The BSC6900 UMTS supports the peak rate of DL 42 Mbit/s.

Smooth Evolution for Investment Protection The BSC6900 UMTS is compatible with the hardware configuration of the BSC6810. Through software loading, the BSC6810 in the existing network can be upgraded to the BSC6900 UMTS. The BSC6900 UMTS can be smoothly upgraded to the BSC6900 GU through addition of the GSM hardware and software upgrade. This facilitates the compatibility with the GSM services and protects the investment of the operator.




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2 Architecture

2.1 Overview The BSC6900 UMTS has a modular design. It enhances resource utilization and system reliability by fully interconnecting subracks and applying distributed resource pools to manage the service processing units. The backplane is universal and every slot is common to different types of boards so that different functions can be performed. In this way, the universality and future evolution capability of the hardware platform are improved.

The BSC6900 UMTS is compatible with the hardware of the BSC6810 in the existing network.

2.2 Hardware Architecture 2.2.1 Cabinets

The BSC6900 UMTS uses the standard N68E-22 cabinet and earthquake-proof N68E-21-N cabinet. The design complies with the IEC60297 and IEEE standards.

In terms of subrack configuration, the BSC6900 UMTS cabinet is classified into main processing rack (MPR) and extended processing rack (EPR), as described in Table 2-1. If the number of subracks configured in the cabinet is less than three, the subracks should be configured from the bottom up.

Table 2-1 Classification of BSC6900 UMTS cabinets

Cabinet Contained Subrack Configuration Principle

MPR 1 MPS, 0–2 EPSs Only one MPR is configured.

EPR 1–3 EPSs Based on the requirement for traffic capacity, 0–1 EPR is configured.




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Figure 2-1 BSC6900 UMTS cabinet

2.2.2 Subracks In compliance with the IEC60297 standard, the BSC6900 UMTS subrack has a standard width of 19 inches. The height of each subrack is 12 U. The boards are installed on the front and rear sides of the backplane, which is positioned in the center of the subrack.

One subrack provides 28 slots. The slots on the front of the subrack are numbered from 0 to 13, and those on the rear are numbered from 14 to 27.

Figure 2-2 shows the front view and rear view of the subrack.




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Figure 2-2 Front view (left) and rear view (right) of the subrack

The BSC6900 UMTS subracks are classified into main processing subrack (MPS) and extended processing subrack (EPS), as described in Table 2-2.

Table 2-2 Classification of BSC6900 UMTS subracks

Subrack Quantity Function

MPS 1 The MPS performs centralized switching and provides service paths for other subracks. It also provides the service processing interface, OM interface, and system clock interface.

EPS 0-5 The EPS performs the functions of user plane processing and signaling control.

2.2.3 Boards Table 2-3 lists the hardware version and its corresponding boards.

Table 2-3 Hardware version and its corresponding boards

Hardware Version

Corresponding Board

HW68 R11 DPUb, SPUa, SCUa, GCGa, GCUa, OMUa, AEUa, AOUa, FG2a, GOUa, PEUa, POUa, and UOIa

HW69 R11 DPUe, SPUb, SCUa, GCGa, GCUa, OMUa, AEUa, AOUc, FG2c, GOUc, PEUa, POUc, UOIa, and UOIc

The BSC6900 V900R012 is based on the hardware version HW69 R11.

The BSC6900 UMTS boards can be classified into the OM board, switching processing board, clock processing board, signaling processing board, service processing board, and interface processing board, as described in Table 2-4.




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Table 2-4 Classification of BSC6900 UMTS boards

Board Type

Board Name

Function

OM board OMUa l Handles configuration management, performance management, fault management, security management, and loading management for the BSC6900.

l Works as the OM agent for the LMT/M2000 to provide the BSC6900 OM interface for the LMT/M2000, thus achieving the communication between the BSC6900 and the LMT/M2000.

l Works as the interface to provide the web-based online help.

Switching processing board

SCUa l Provides MAC/GE switching and enables the convergence of ATM and IP networks.

l Provides data switching channels. l Provides system-level or subrack-level configuration and

maintenance. l Distributes clock signals for the BSC6900.

Clock processing board

GCUa Obtains the system clock source, performs the functions of phase-lock and holdover, and provides clock signals.

GCGa l Obtains the system clock source, performs the functions of phase-lock and holdover, and provides clock signals.

l Receives and processes the GPS signals.

Signaling processing board

SPUa Manages user plane and signaling plane resources in the subrack and processes signaling.

SPUb Manages user plane and signaling plane resources in the subrack and processes signaling. The processing capability of the SPUb board is 75% to 100% higher than that of the SPUa board.

Service processing board

DPUb Processes CS services and PS services within the system.

DPUe Processes CS services and PS services within the system. The processing capability of the DPUe board is 80% to 300% higher than that of the DPUb board.

Interface processing board

AEUa l Provides 32 channels of ATM over E1/T1. l Extracts clock signals and sends the signals to the GCUa or

GCGa board.

AOUa l Provides two channels over the channelized optical STM-1/OC-3 ports based on ATM protocols.

l Supports ATM over E1/T1. l Provides 126 E1s or 168 T1s. l Extracts clock signals and sends the signals to the GCUa or

GCGa board.




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Board Type

Board Name

Function

FG2a l Provides eight channels over FE electrical ports or two channels over GE electrical ports.

l Supports IP over FE/GE.

GOUa l Provides two channels over GE optical ports. l Supports IP over GE.

PEUa l Provides 32 channels of IP over E1/T1. l Extracts clock signals and sends the signals to the GCUa or

GCGa board.

POUa l Provides two channels over the channelized optical STM-1/OC-3 ports based on IP protocols.

l Supports IP over E1/T1 over SDH/SONET. l Provides the load bearer capability of 126 E1s or 168 T1s. l Extracts clock signals and sends the signals to the GCUa or

GCGa board.

UOIa l Provides four channels over the unchannelized STM-1/OC-3c optical ports.

l Supports ATM/IP over SDH/SONET. l Extracts clock signals and sends the signals to the GCUa or

GCGa board.

AOUc l Provides four channels over the channelized optical STM-1/OC-3 ports based on ATM protocols.

l Supports ATM over E1/T1 over SDH or SONET. l Provides 252 E1s or 336 T1s. l Extracts clock signals and sends the signals to the GCUa or

GCGa board.

FG2c l Provides 12 channels over FE electrical ports or 4 channels over GE electrical ports.

l Supports IP over FE/GE.

GOUc l Provides four channels over GE optical ports. l Supports IP over GE.

POUc l Provides four channels over the channelized optical STM-1/OC-3 ports based on IP protocols, equivalent to 252 E1s or 336 T1s.

l Supports IP over E1/T1 over SDH/SONET. l Extracts clock signals and sends the signals to the GCUa or

GCGa board.




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Board Type

Board Name

Function

UOIc l Provides eight channels over the unchannelized STM-1/OC-3c optical ports.

l Supports ATM over SDH/SONET. l Extracts clock signals and sends the signals to the GCUa or

GCGa board.

If operators use Huawei Nastar, operators need to install the SAU board in the MPS or EPS of the BSC6900 cabinet (the SAU board occupies two slots that work in active/standby mode).

2.3 Software Architecture The BSC6900 UMTS software is designed with a layered architecture. Each layer has dedicated functions and provides services for other layers; however, each layer hides the technical implementation details and physical topology from other layers. Figure 2-3 shows the software architecture of the BSC6900 UMTS.

Figure 2-3 Software architecture of the BSC6900 UMTS

Infrastructure

SMP

ICCP

STCP

Application

Table 2-5 describes the functions of each layer in the software architecture.

Table 2-5 Functions of each layer in the BSC6900 UMTS software architecture

Layer Functions

Infrastructure l Provides the hardware platform and hides the lower-layer hardware implementation.

l Hides the differences for operating systems, and provides enhanced and supplementary functions for the system.




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Layer Functions

Service Management Plane (SMP)

Provides the OM interface to perform the OM functions of the system.

Internal Communication Control Plane (ICCP)

l Transfers internal maintenance messages and service control messages between different processors, thus implementing efficient control over distributed communication.

l Operates independent of the infrastructure layer.

Service Transport Control Plane (STCP)

l Transports the service data on the user plane and control plane at the network layer between NEs.

l Separates the service transport technology from the radio access technology and makes the service transport transparent to the upper-layer service.

l Provides service bearer channels.

Application l Implements the basic functions of network element service control and controls the upper-layer service, such as call processing, mobility management, and RRM.

l Hides the topology characteristics of various resources in the network and in the equipment.

l Provides the resource access interface, hides the distribution of internal resources and network resources, maintains the mapping between the service control and resource instance, and controls the association between various resources.

l Manages the resources and OM status, responds to the resource request from the upper layer, and hides the resource implementation from the upper layer.

l Isolates the upper-layer services from the hardware platform to facilitate the hardware development.

2.4 Reliability The resource pool and redundancy are widely used in the reliability design of the BSC6900 UMTS. The techniques of detecting and isolating the faults in the boards and in the system are optimized and the software fault tolerance capability is improved to enhance the system reliability.

2.4.1 System Reliability The BSC6900 UMTS system reliability is designed with the following features:

l High reliable architecture design The design of dual switching planes, with up to 120 Gbit/s GE star non-blocking switching capability per subrack, solves the bottleneck problem and prevents the single point failure in the deployment of the high-capacity BSC6900 UMTS.




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Moreover, port trunking is adopted on the switching boards. The port trunking function allows data backup in case of link failure, thus preventing inter-plane switchover and cascading switchover and improving the reliability of intra-system communication. Dual clock planes are used in clock transmission between the GCUa/GCGa board and the SCUa board. Thus, a single point of failure does not affect the normal operation of the system clock.

l Resource pool design In case of overload, the system achieves load sharing between the control plane and the user plane by employing the resource pooling functionality. This effectively avoids suspension because of overload, thus improving the resource utilization and system reliability.

l Redundancy mechanism All the hardware in the BSC6900 UMTS supports the redundancy mechanism. The rapid switchover between active and standby parts improves the system reliability. Moreover, with the quick fault detection and rectification feature, the impact of the faults on the service is minimized.

l Flow control The system performs flow control based on the CPU and memory usage. Thus, the BSC6900 UMTS can continue working by regulating the items pertaining to performance monitoring, resource auditing, and resource scheduling in the case of CPU overload and resource congestion. In this way, the system reliability is enhanced.

2.4.2 Hardware Reliability The BSC6900 UMTS hardware reliability is designed with the following features:

l The system uses the multi-level cascaded and distributed cluster control mode. Several CPUs form a cluster processing system. Each module has distinct functions. The communication channels between modules are based on the redundancy design or anti-suspension/breakdown design.

l The system uses the redundancy design, as described in Table 2-6, to support hot swap of boards and redundancy of important modules. Therefore, the system has a strong fault tolerance capability.

Table 2-6 Board redundancy

Board Redundancy Mode

AEUa Board redundancy

AOUa/AOUc Board redundancy + MSP 1:1 optical port redundancy or MSP 1+1 optical port redundancy

DPUb/DPUe Board resource pool

FG2a/FG2c Board redundancy + GE/FE port redundancy or load sharing

GCUa/GCGa Board redundancy

GOUa/GOUc Board redundancy + GE port redundancy or load sharing

OMUa Board redundancy

PEUa Board redundancy




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Board Redundancy Mode

POUa/POUc Board redundancy + MSP 1:1 optical port redundancy or MSP 1+1 optical port redundancy

SCUa Board redundancy + port trunking on GE ports

SPUa/SPUb Board redundancy

UOIa/UOIc Board redundancy + MSP 1:1 optical port redundancy or MSP 1+1 optical port redundancy

l The isolation mechanism is used. When entity A fails to accomplish a task, entity B that has the same functionalities as entity A takes over the task. Meanwhile, entity A is isolated until it is restored.

l When a board with a single functionality is faulty, the board can be restarted to rectify the fault.

l All boards support dual-BIOS. When one BIOS is faulty, the startup or operation of a board is not affected.

l The system uses the non-volatile memory to store important data. l With advanced integrated circuits, the system is characterized by high integration,

sophisticated technology, and high reliability. l All the parts of the system are of high quality and pass the aging test. The process of

hardware assembly is strictly controlled. These methods ensure the high stability and reliability for long-term operation.

2.4.3 Software Reliability The BSC6900 UMTS software reliability is designed with the following features:

l Scheduled check on crucial resources The software check mechanism checks various software resources in the system. If a resource deadlock occurs because of software faults, the check mechanism can release the locked resources and generate related logs and alarms.

l Task monitoring When the software is running, internal software faults and some hardware faults can be monitored through the monitoring process. The monitoring process monitors the task operating status and reports errors to the OM system.

l Data check The software performs regular or event-driven data consistency check, restores the data selectively or preferably, and generates logs and alarms.

l Data backup Both the data in the OMU database and the board data can be backed up to ensure data reliability and consistency.

l Operation logs The system automatically records the history operations into logs. The operation logs help in identifying and rectifying the faults caused by improper operations.




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3 Configurations

3.1 Overview The BSC6900 UMTS is compatible with all the hardware configuration of the BSC6810 in the existing network. The BSC6810 can be upgraded to the BSC6900 UMTS through software upgrade. If the hardware configuration does not change, the system specifications remain unchanged.

3.2 Configuration Specifications 3.2.1 Configuration Specifications of a Single Subrack

The typical configuration specifications of a single subrack vary according to the types of configured boards.

Table 3-1 presents the typical configuration specifications of a subrack when HW68 R11 boards are used.

Table 3-1 Typical configuration specifications of a single BSC6900 UMTS subrack (HW68 R11 boards)

Specification/Subrack MPS EPS

BHCA (k) 320 400

Traffic volume (Erl) 7,200 10,800

PS (UL + DL) data throughput (Mbit/s)

460 690

Number of NodeBs 200 300

Number of cells 600 900

NOTE The BHCA and traffic volume are calculated on the basis of Huawei traffic model.




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Table 3-2 presents the typical configuration specifications of a subrack when HW69 R11 boards are used.

Table 3-2 Typical configuration specifications of a single BSC6900 UMTS subrack (HW69 R11 boards)

Specification/Subrack MPS EPS

BHCA (k) 420 560



2,000 2,000

Number of NodeBs 540 720

Number of cells 1,200 1,200


3.2.2 Typical Configuration Specifications Table 3-3 presents the typical configuration specifications of the BSC6900 UMTS when HW68 R11 boards are used.

Table 3-3 Typical configuration specifications of the BSC6900 UMTS (HW68 R11 boards)

Specification/Subrack Combination

1 MPS (Minimum Configuration)

1 MPS + 1 EPS

1 MPS + 2 EPSs

1 MPS + 3 EPSs

1 MPS + 4 EPSs

1 MPS + 5 EPSs (Maximum Configuration)

BHCA (k) 320 720 1,040 1,360 1,680 2,000

Traffic volume (Erl) 7,200 18,000 28,800 39,600 50,400 61,200


460 1,150 1,840 2,530 3,220 3,910

Number of NodeBs 200 500 800 1,100 1,400 1,700

Number of cells 600 1,500 2,400 3,300 4,200 5,100


Table 3-4 presents the typical configuration specifications of the BSC6900 UMTS when HW69 R11 boards are used.




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Table 3-4 Typical configuration specifications of the BSC6900 UMTS (HW69 R11 boards)

Specification/Subrack Combination

1 MPS (Minimum Configuration)

1 MPS + 1 EPS

1 MPS + 2 EPSs

1 MPS + 3 EPSs

1 MPS + 4 EPSs

1 MPS + 5 EPSs (Maximum Configuration)

BHCA (k) 420 980 1,540 2,100 2,660 3,220

Traffic volume (Erl) 13,400 26,800 40,200 53,600 67,000 80,400


2,000 4,000 6,000 8,000 10,000 12,000

Number of NodeBs 540 1,260 1,980 2,700 3,060 3,060

Number of cells 1,200 2,400 3,600 4,800 5,100 5,100





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4 Operation and Maintenance

4.1 Overview The BSC6900 UMTS provides convenient local maintenance and remote maintenance and supports multiple OM modes.

The BSC6900 UMTS provides a hardware-independent universal OM mechanism and provides OM functions such as security management, fault management, alarm management, equipment management, and software management.

The Man Machine Language (MML) provides OM and configuration functions, and the Graphic User Interface (GUI) provides the OM functions. The two modes meet the requirements of different operation environments.

Figure 4-1 shows the OM networking of the BSC6900 UMTS.




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Figure 4-1 OM networking of the BSC6900 UMTS

Alarm box

VLAN

LMT LMT

iManager M 2000

BSC 6900 UMTS

The OM system of the BSC6900 UMTS adopts the browser/server (B/S) separated mode. The OMUa board of the BSC6900 UMTS works as the server, and the LMT is used for local maintenance. The iManager M2000 is the centralized OM system, which is used for remote maintenance.

The alarm box connects to the LMT and provides audible and visible indications for alarms.

4.2 Benefits

Web-based LMT Improving User Experience The OM system of the BSC6900 UMTS uses the web-based LMT, which need not be installed with any OM software. You can connect the LMT to the OMUa to perform OM functions and obtain the online help of the LMT. All the operation results are displayed on the LMT through the web browser.

Diversified OM Modes The BSC6900 UMTS provides local maintenance and remote maintenance and supports multiple OM modes to meet the operation needs in various OM scenarios.

The LMT used for local maintenance can access the BSC6900 UMTS in the following ways:

l Through the port on the panel of the OMUa board l Through the Virtual Local Area Network (VLAN) l Through the Intranet and Internet




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The iManager M2000 used for remote maintenance can access the BSC6900 UMTS in the following ways:

l Through the VLAN l Through the Intranet and Internet

Powerful Hardware Management Functions for Rapid Identification and Rectification of Hardware Faults

The BSC6900 UMTS provides the precaution mechanism for the hardware fault, thus ensuring that sufficient time is available to rectify the fault in time before the services are disrupted.

The BSC6900 UMTS provides functions such as status query, data configuration, and status management of the internal physical devices.

When a hardware fault occurs, the BSC6900 UMTS alerts the user by generating alarms and flashing indicators and provides suggestions to guide the user in troubleshooting. The alarm is cleared upon the rectification of the fault.

The BSC6900 UMTS provides the functions of isolating the faulty part, such as activating or deactivating the faulty part. When a faulty part needs to be replaced, the hot swapping function enables the rapid power-on of the substitute, thus reducing the time in fault rectification.

In case of emergency, you can reset the board to quickly rectify the fault.

Advanced Software Management Functions for Secure and Smooth Upgrade The BSC6900 UMTS provides the remote upgrade tool, which enables the operator to upgrade the software at the operation and maintenance center without affecting the ongoing services. The remote upgrade tool provides the function of backing up the crucial data in the system. When the upgrade fails, version rollback is performed immediately and the system returns to normal in a short period.

After the upgrade is complete, version consistency check is performed to ensure the version correctness.

Rich Tracing and Detection Mechanisms for Reliably Monitoring the Network Status

The BSC6900 UMTS provides the tracing and detection functions of multiple layers and multiple levels to accurately locate faults. The tracing and detection functions include user tracing, interface tracing, message tracing, fault detection on the physical layer, fault detection on the data link layer, and detection of other faults.

The tracing messages are saved as files, which can be viewed through the review and tracing functions of the LMT.

Easy Equipment Installation, Commissioning, and Network Upgrade Before delivery, Huawei BSC6900 UMTS is installed with boards, operating system, and common data. In addition, it is correctly assembled and passes the rigid test. You only need to install the cabinet and cables on site. After the hardware installation is complete, you can load software and data files to commission the software and hardware.




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The BSC6900 UMTS supports all the configuration of the BSC6810 in the existing network. The BSC6810 can be upgraded to the BSC6900 UMTS through hardware adjustment and software upgrade, thus maximizing the resource utilization in the existing network and saving the cost of network rollout.




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5 Technical Specifications

5.1 Technical Specifications 5.1.1 Capacity Specifications

Item Specification

System Capacity (HW68 R11 Boards)

System Capacity (HW69 R11 Boards)

BHCA (k) 2,000 3,220



3,910 12,000

Number of NodeBs 1,700 3,060

Number of cells 5,100 5,100

5.1.2 Structural Specifications Item Specification

Cabinet standard The structural design conforms to the IEC60297 standard and IEEE standard.

Dimensions (height x width x depth)

N68E-22 cabinet: 2,200 mm x 600 mm x 800 mm N68E-21-N cabinet: 2,130mm x 600 mm x 800 mm

Height of the available space

N68E-22 cabinet: 46 U N68E-21-N cabinet: 44 U

Cabinet weight N68E-22 cabinet: ≤ 320 kg N68E-21-N cabinet: ≤ 380 kg

Load-bearing capacity of the floor in the equipment room

≥ 450 kg/m2




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5.1.3 Clock Specifications Item Specification

Clock precision It meets the requirements for the stratum-3 clock.

Clock accuracy ±4.6 x 10-6

Pull-in range ±4.6 x 10-6

Maximum frequency offset 2 x 10-8/day

Initial maximum frequency offset 1 x 10-8

5.1.4 Electrical Specifications Item Sub-Item Specification

Power input Power input –48 V DC

Power range –40 V to –57 V

Power consumption Power consumption in a subrack

MPS: ≤ 1,560 W EPS: ≤ 1,540 W

Power consumption of a cabinet in full configuration

MPR: ≤ 4,740 W EPR: ≤ 4,720 W

5.1.5 Space Specifications Item Recommended Value Position in

Figure 5-1

Distance between the cable ladder and the wall

800 mm 1)

Distance between the side of the cabinet and the cable ladder

200 mm 2)

Distance between the side of the cabinet and the wall

800 mm 5)

Width of the main aisle 1,000 mm 4)

Distance between the front (rear) side of the cabinet and the wall

800 mm 3)

Distance of cabinet front (rear) between two adjacent cabinet rows

1,800 mm 6)




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Figure 5-1 Space requirements in the equipment room

l In overhead cabling mode, the distance between the cabinet top and the ceiling of the equipment room must be greater than or equal to 1,000 mm.

l In underfloor cabling mode, the height of the electrostatic discharge (ESD) floor must be greater than or equal to 200 mm.

5.1.6 Environmental Specifications Item Specification

Storage Environment

Transportation Environment

Operating Environment

Temperature range

–40°C to +70°C –40°C to +70°C Long-term: 0°C to 45°C Short-term: –5°C to +55°C

Humidity range 10% RH to 100% RH

5% RH to 100% RH

Long-term: 5% RH to 85% RH Short-term: 5% RH to 95% RH

NOTE Short-term operation refers to the operation with the duration not more than 96 hours at a time and with the accumulative duration not more than 15 days a year.




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5.1.7 Transmission Ports Transmission Type Connector

E1/T1 DB44

Channelized STM-1/OC-3 LC/PC

Unchannelized STM-1/OC-3c LC/PC

FE RJ45

GE RJ45

LC/PC

5.1.8 Reliability Specifications Item Specification

System availability > 99.999%

Mean Time Between Failures (MTBF) ≥ 448,000 hours

Mean Time To Repair (MTTR) ≤ 1 hour

5.2 Compliance Standards 5.2.1 Power Supply Standards

Item Standard

Power supply ETS300 132-2

5.2.2 Grounding Standards Item Standard

Grounding ETS300 253

5.2.3 Environment Standards Item Standard

Noise ETS300 753




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Item Standard

GR-63-CORE

5.2.4 Safety Standards Item Standard

Earthquake-proofing ETS300 019-2-4-AMD

GR-63-CORE

YDN5083

Safety IEC60950, EN60950, UL60950

IEC60825-1

IEC60825-2

IEC60825-6

GB4943

GR-1089-CORE

Surge protection IEC 61024-1 (1993)

IEC 61312-1 (1995)

IEC 61000-4-5 (1995)

ITU-T K.11 (1993)

ITU-T K.27 (1996)

ITU-T K.41 (1998)

EN 300 386 (2000)

GR-1089-CORE (1999)

YDJ 26-89

GB 50057-94

YD5098-2001

5.2.5 EMC Standards Item Standard

Electromagnetic compatibility (EMC)

ETSI EN 300 386 V1.3.2 (2003-05)

CISPR 22 (1997)




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Item Standard

IEC61000-4-2

IEC61000-4-3

IEC61000-4-4

IEC61000-4-5

IEC61000-4-6

IEC61000-4-29

GB9254-1998

FCC Part 15

NEBS Bellcore GR-1089-CORE issue 2

5.2.6 Environment Standards Item Standard Class

Storage environment ETS300 019-1-1 CLASS 1.2

Transportation environment ETS300 019-1-2 CLASS 2.3

Operating environment ETS300 019-1-3 CLASS 3.1




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6 Acronyms and Abbreviations

Acronym and Abbreviation Expansion

3GPP Third Generation Partnership Project

ATM Asynchronous Transfer Mode

BHCA Busy Hour Call Attempt

CPU Central Processing Unit

DSP Digital Signal Processor

EPR Extended Processing Rack

EPS Extended Processing Subrack

FE Fast Ethernet

GE Gigabit Ethernet

GUI Graphic User Interface

ICCP Internal Communication Control Plane

IP Internet Protocol

LMT Local Maintenance Terminal

MAC Media Access Control

MML Man Machine Language

MPR Main Processing Rack

MPS Main Processing Subrack

MSP Multiplex Section Protection

MTBF Mean time between failures

MTTR Mean Time To Recovery

OM Operation & Maintenance




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Acronym and Abbreviation Expansion

OS Operating System

PDCH Packet Data Channel

RRM Radio Resource Management

SDH Synchronous Digital Hierarchy

STCP Service Transport Control Plane

SMP Service Management Plane

TCR TransCoder Rack

TCS TransCoder Subrack

TDM Time Division Multiplexing

TRX Transceiver

VLAN Virtual Local Area Network

RAN12 0 BSC6900 Product Description V1 0

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