2.6.3 umts bsc6900 product description
TRANSCRIPT
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]
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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-BC
NodeBUu
RNC
PS core
network
Iur
The interfaces between the BSC6900 UMTS and each NE in the UMTS network are as
follows:
Iub: the interface between the BSC6900 UMTS and the NodeB
Iur: the interface between the BSC6900 UMTS and the RNC
Iu-CS: the interface between the BSC6900 UMTS and the Mobile Switching Center
(MSC) or Media Gateway (MGW)
Iu-PS: the interface between the BSC6900 UMTS and the Serving GPRS Support Node
(SGSN)
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 Handles configuration management, performance
management, fault management, security management, and
loading management for the BSC6900.
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.
Works as the interface to provide the web-based online
help.
Switching
processing
board
SCUa Provides MAC/GE switching and enables the convergence
of ATM and IP networks.
Provides data switching channels.
Provides system-level or subrack-level configuration and
maintenance.
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 Obtains the system clock source, performs the functions of
phase-lock and holdover, and provides clock signals.
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 Provides 32 channels of ATM over E1/T1.
Extracts clock signals and sends the signals to the GCUa or
GCGa board.
AOUa Provides two channels over the channelized optical
STM-1/OC-3 ports based on ATM protocols.
Supports ATM over E1/T1.
Provides 126 E1s or 168 T1s.
Extracts clock signals and sends the signals to the GCUa or
GCGa board.
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Board Type
Board Name
Function
FG2a Provides eight channels over FE electrical ports or two
channels over GE electrical ports.
Supports IP over FE/GE.
GOUa Provides two channels over GE optical ports.
Supports IP over GE.
PEUa Provides 32 channels of IP over E1/T1.
Extracts clock signals and sends the signals to the GCUa or
GCGa board.
POUa Provides two channels over the channelized optical
STM-1/OC-3 ports based on IP protocols.
Supports IP over E1/T1 over SDH/SONET.
Provides the load bearer capability of 126 E1s or 168 T1s.
Extracts clock signals and sends the signals to the GCUa or
GCGa board.
UOIa Provides four channels over the unchannelized
STM-1/OC-3c optical ports.
Supports ATM/IP over SDH/SONET.
Extracts clock signals and sends the signals to the GCUa or
GCGa board.
AOUc Provides four channels over the channelized optical
STM-1/OC-3 ports based on ATM protocols.
Supports ATM over E1/T1 over SDH or SONET.
Provides 252 E1s or 336 T1s.
Extracts clock signals and sends the signals to the GCUa or
GCGa board.
FG2c Provides 12 channels over FE electrical ports or 4 channels
over GE electrical ports.
Supports IP over FE/GE.
GOUc Provides four channels over GE optical ports.
Supports IP over GE.
POUc Provides four channels over the channelized optical
STM-1/OC-3 ports based on IP protocols, equivalent to 252
E1s or 336 T1s.
Supports IP over E1/T1 over SDH/SONET.
Extracts clock signals and sends the signals to the GCUa or
GCGa board.
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Board Type
Board Name
Function
UOIc Provides eight channels over the unchannelized
STM-1/OC-3c optical ports.
Supports ATM over SDH/SONET.
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 Provides the hardware platform and hides the lower-layer hardware
implementation.
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
Communicati
on Control
Plane (ICCP)
Transfers internal maintenance messages and service control messages
between different processors, thus implementing efficient control over
distributed communication.
Operates independent of the infrastructure layer.
Service
Transport
Control Plane
(STCP)
Transports the service data on the user plane and control plane at the
network layer between NEs.
Separates the service transport technology from the radio access
technology and makes the service transport transparent to the
upper-layer service.
Provides service bearer channels.
Application Implements the basic functions of network element service control and
controls the upper-layer service, such as call processing, mobility
management, and RRM.
Hides the topology characteristics of various resources in the network
and in the equipment.
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.
Manages the resources and OM status, responds to the resource request
from the upper layer, and hides the resource implementation from the
upper layer.
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:
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.
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.
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.
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:
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.
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
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.
When a board with a single functionality is faulty, the board can be restarted to rectify
the fault.
All boards support dual-BIOS. When one BIOS is faulty, the startup or operation of a
board is not affected.
The system uses the non-volatile memory to store important data.
With advanced integrated circuits, the system is characterized by high integration,
sophisticated technology, and high reliability.
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:
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.
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.
Data check
The software performs regular or event-driven data consistency check, restores the data
selectively or preferably, and generates logs and alarms.
Data backup
Both the data in the OMU database and the board data can be backed up to ensure data
reliability and consistency.
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
Traffic volume (Erl) 13,400 13,400
PS (UL + DL) data
throughput (Mbit/s)
2,000 2,000
Number of NodeBs 540 720
Number of cells 1,200 1,200
NOTE
The BHCA and traffic volume are calculated on the basis of Huawei traffic model.
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
PS (UL + DL) data
throughput (Mbit/s)
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
NOTE
The BHCA and traffic volume are calculated on the basis of Huawei traffic model.
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
PS (UL + DL) data
throughput (Mbit/s)
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
NOTE
The BHCA and traffic volume are calculated on the basis of Huawei traffic model.
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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:
Through the port on the panel of the OMUa board
Through the Virtual Local Area Network (VLAN)
Through the Intranet and Internet
RAN12.0 BSC6900 Product Description
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Copyright © Huawei Technologies Co., Ltd.
Page 21 of 30
The iManager M2000 used for remote maintenance can access the BSC6900 UMTS in the
following ways:
Through the VLAN
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.
RAN12.0 BSC6900 Product Description
Issue V1.0 (2009-12-15) Huawei Technologies Propriety
Copyright © Huawei Technologies Co., Ltd.
Page 22 of 30
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.
RAN12.0 BSC6900 Product Description
Issue V1.0 (2009-12-15) Huawei Technologies Propriety
Copyright © Huawei Technologies Co., Ltd.
Page 23 of 30
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
Traffic volume (Erl) 61,200 80,400
PS (UL + DL) data
throughput (Mbit/s)
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
RAN12.0 BSC6900 Product Description
Issue V1.0 (2009-12-15) Huawei Technologies Propriety
Copyright © Huawei Technologies Co., Ltd.
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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)
RAN12.0 BSC6900 Product Description
Issue V1.0 (2009-12-15) Huawei Technologies Propriety
Copyright © Huawei Technologies Co., Ltd.
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Figure 5-1 Space requirements in the equipment room
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.
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.
RAN12.0 BSC6900 Product Description
Issue V1.0 (2009-12-15) Huawei Technologies Propriety
Copyright © Huawei Technologies Co., Ltd.
Page 26 of 30
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
RAN12.0 BSC6900 Product Description
Issue V1.0 (2009-12-15) Huawei Technologies Propriety
Copyright © Huawei Technologies Co., Ltd.
Page 27 of 30
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)
RAN12.0 BSC6900 Product Description
Issue V1.0 (2009-12-15) Huawei Technologies Propriety
Copyright © Huawei Technologies Co., Ltd.
Page 28 of 30
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
RAN12.0 BSC6900 Product Description
Issue V1.0 (2009-12-15) Huawei Technologies Propriety
Copyright © Huawei Technologies Co., Ltd.
Page 29 of 30
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
RAN12.0 BSC6900 Product Description
Issue V1.0 (2009-12-15) Huawei Technologies Propriety
Copyright © Huawei Technologies Co., Ltd.
Page 30 of 30
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