railway operational communication solution gsm-r hlr9820 product description1.0(20090512)
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GSM-R HLR9820 Product Description
Issue 1.0
Date 2013-02-25
HUAWEI TECHNOLOGIES CO., LTD.
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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 Product Orientation ............................................................................................................ 4
1.1 Huawei USC Solution .......................................................................................................................... 4
1.2 Product Orientation of the HLR9820 ................................................................................................... 6
1.3 Major Functions of the HLR9820 ........................................................................................................ 8
1.4 Key Benefits ......................................................................................................................................... 9
2 Overview of the HLR9820 ............................................................................................... 11
2.1 Physical Structure ............................................................................................................................... 11
2.2 Logical Structure ................................................................................................................................ 16
3 System Features ................................................................................................................. 21
3.1 Distributed Structure .......................................................................................................................... 21
3.2 ATCA-Compatible OSTA 2.0 Hardware Platform ............................................................................. 22
3.3 Memory Data Management Technology ............................................................................................ 23
3.4 Multi-Level Data Backup Mechanism ............................................................................................... 23
3.5 Virtual HLR Function......................................................................................................................... 24
3.6 Large Capacity and High Integrity ..................................................................................................... 25
3.7 Separate Data Processing and Service Processing ............................................................................. 25
3.8 Physical Self-Redundancy Solutions ................................................................................................. 26
3.9 Smooth Data Convergence ................................................................................................................. 27
3.10 Standard and Open Data Access Interface ........................................................................................ 27
3.11 Comprehensive Data Statistics and Analysis .................................................................................... 28
4 Technical Specifications .................................................................................................. 29
4.1 Performance Specifications ................................................................................................................ 29
4.2 Reliability Specifications ................................................................................................................... 30
4.3 Cabinet Specifications ........................................................................................................................ 30
4.4 Power Consumption ........................................................................................................................... 31
4.5 Clock Specifications........................................................................................................................... 32
4.6 EMC Specifications ........................................................................................................................... 34
4.7 Environment Requirements ................................................................................................................ 34
5 Acronyms and Abbreviations ......................................................................................... 42
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1 Product Orientation 1.1 Huawei USC Solution
At present, the service data of subscribers is distributed in different functional entities
in the network, and the functional entities have different data management modes.
Isolated information "islands" thus emerge. The isolated information "islands" lack
scalability, making the carriers' networks very complicated. In addition, it is hard for
carriers to make use of the isolated information to develop value-added services. As a
result, carriers are facing more challenges in providing the same service experience to
subscribers over multiple types of networks.
Nowadays, more and more carriers come to realize the importance of convergence and
centralized management of the subscriber service data, and put forward various
solutions. To realize the subscriber-oriented convergence of subscriber service data
becomes a development trend in the telecommunication industry.
Huawei Unified Subscriber Center (USC) incorporates the functions of the network
entities such as the HLR, HSS, AAA, MNP, EIR, and GUP. It can converge the
subscriber service data required by the NEs in the public land mobile network (PLMN),
public switched telephone network (PSTN), broadband network, and multimedia
network.
The USC can realize centralized management of the subscriber service data and
provide an open data interface. It can simplify network deployment, accelerate the
provisioning of new services, and prompt service innovation. The USC solution helps
carriers to provide competitive integrated services.
Figure 1-1 illustrates Huawei USC solution.
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Figure 1-1 Huawei USC solution
AAA: Authentication, Authorization
and Accounting
AS: Application Server BE: Back End
CRBT: Color Ring Back Tone CSCF: Call Session
Control Function
FE: Front End
HLR: Home Location Register HSS: Home Subscriber
Server
IMS: IP Multimedia Subsystem
MGCF: Media Gateway Control
Function
MSC: Mobile Switching
Center
MNP: Mobile Number Portability
SGSN: Serving GPRS Support Node
Huawei USC consists of the Back End (BE) and the Front End (FE).
BE
The BE is subscriber-oriented and uses the directory service to store the
subscriber data. It allows the subscriber data to be added, deleted, queried, and
updated through the directory service. It also provides the data required by the
FE.
FE
The FE processes signaling access services.
The FE does not store subscriber data. It obtains data services from the BE
through directory services.
Huawei USC solution provides the HLR-FE, HSS-FE, AAA-FE, MNP-FE, and
AS-FE.
The implementation of Huawei USC solution comprises three phases:
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Phase I: network simplification
The USC is deployed as the HLR, HSS, or AAA. It features large capacity and
provides high network security. The USC solution can reduce the number of NEs
used in the network and simplify network deployment.
Phase II: data convergence
The USC converges the subscriber data relating to voice services, multimedia
services, and broadband services. It supports data platform standardization, data
sharing, and service convergence.
Phase III: service innovation
The convergence of subscriber data provides a unified data source, which makes
rapid service innovation and efficient data operation and management possible.
Based on the unified data source and centralized data management, carriers can
provide more value-added services to attract more subscribers and to enhance the
competitive strength.
1.2 Product Orientation of the HLR9820 The HLR9820 is the product provided by Huawei USC solution in the first phase.
Figure 1-2 illustrates the evolution of the HLR9820 towards the USC.
Figure 1-2 Evolution of the HLR9820 towards the USC
AAA: Authentication, Authorization
and Accounting
AS: Application Server BE: Back End
CRBT: Color Ring Back Tone CSCF: Call Session Control Function FE: Front End
GMLC: Gateway Mobile Location
Center
HLR: Home Location Register HSS: Home Subscriber Server
IMS: IP Multimedia Subsystem MGCF: Media Gateway Control Function MSC: Mobile Switching Center
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MNP: Mobile Number Portability SCP: Service Control Point SGSN: Serving GPRS Support Node
SMC: Short Message Center
The HLR9820 provides the functions of the HLR. It is shared by the circuit switched
(CS) domain and the packet switched (PS) domain in the GSM or the UMTS network.
The HLR9820 compared with the traditional HLR, the HLR9820 consists of:
HLR-BE
The HLR-BE stores subscriber data. It provides services such as data addition,
data deletion, data update, and date query to the HLR-FE.
HLR-FE
The HLR-FE is connected with the signaling network. It processes IP signaling,
ATM 2Mbit/s signaling, and TDM signaling. The HLR-FE supports the same
protocols and interfaces as the HLR.
The HLR-FE does not store subscriber data. It obtains data services from the
HLR-BE.
Figure 1-3 shows the difference between the HLR9820 and the traditional HLR.
Figure 1-3 Difference between the HLR9820 and the traditional HLR
MSC serverSGSN
HLR
SCP SMC GMLC
Signaling network
Signaling network
Control layer
Service layer
MSC serverSGSN
HLR9820
SCP SMC GMLC
Signaling network
Signaling network
Control layer
Service layer
HLR-BE
HLR-FE
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BE: Back End FE: Front End GMLC: Gateway Mobile Location Center
HLR: Home Location Register HSS: Home Subscriber Server MSC: Mobile Switching Center
SCP: Service Control Point SGSN: Serving GPRS Support Node SMC: Short Message Center
1.3 Major Functions of the HLR9820 The HLR9820 provides the following functions:
Subscriber Data Management
Mobility Management
Support of the Call-Related Processing
Support of the ATI
Functions of the AuC
Subscriber Data Management
The HLR9820 manages the following data:
Basic subscriber data
The HLR9820 stores and manages the basic data of the subscribers defined in it.
The basic data stored in the HLR9820 includes the information on:
Subscriber identification
Basic services provided to subscribers
Supplementary services provided to subscribers
Operator-determined barring (ODB) services provided to subscribers
Roaming restriction
CAMEL services provided to subscribers
GPRS services provided to subscribers
Authentication data
Upon the request of the visitor location register (VLR) or serving GPRS support
node (SGSN), the HLR9820 provides the authentication data to the VLR or
SGSN. The HLR9820 can send one to five authentication triplets or quintuplets at
a time.
In addition, the HLR9820 can convert the UMTS quintuplets into GSM triplets.
Mobility Management
The HLR9820 supports the mobility management of mobile subscribers in the CS
domain and the PS domain.
Mobility management in the CS domain
The HLR9820 supports the mobility management of mobile subscribers over the
Mobile Application Part (MAP) interface in the CS domain.
The mobile management comprises:
Location update
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Location cancellation
Mobility management in the PS domain
The HLR9820 supports the mobility management of mobile subscribers over the
MAP interface in the PS domain.
The mobile management comprises:
GPRS routing area update
GPRS routing area cancellation
Support of the Call-Related Processing
The HLR9820 responds to the Sending Routing Information (SRI) request sent from
the MSC and provides a mobile station roaming number (MSRN) in a
mobile-terminated call (MTC).
Support of the ATI
The HLR9820 supports the any time interrogation (ATI) initiated by the service
control point (SCP). Through the ATI, the SCP and HLR9820 obtain the location and
status of the mobile stations (MSs).
Functions of the AuC
The authentication center (AuC) processes the security data for subscriber
authentication.
Upon the request of the VLR or SGSN, the AuC generates an authentication quintuplet
or triplet, and sends the authentication quintuplet or triplet to the VLR or SGSN
through the HLR9820. The AuC then verifies the international mobile subscriber
identity (IMSI) of the subscriber to ensure the validity of the subscriber.
1.4 Key Benefits
The HLR9820 features high reliability, large capacity, and high integration, and
provides the capability of data convergence. It can help carriers to provide tailored
services and gain competition predominance.
Highly Reliable Network and Enhanced QoS
The HLR9820 adopts totally new design and highly efficient mechanisms to ensure
high network reliability and protect the interest and brand image of carriers.
The high reliability and QoS are attributed to the following features of the HLR9820:
Fully-distributed structure
ATCA-compatible OSTA 2.0 hardware platform
Memory data management mechanism
Multi-level data backup mechanism
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Implementing Centralized Network Deployment and Slashing the OPEX
The HLR9820 features large capacity and high integration. The standard configuration
of six cabinets can support 100 million subscribers.
The HLR9820 provides the virtual HLR function, which allows authority-based and
domain-based management of the large-capacity HLR. This feature can help carriers to
realize centralized network deployment.
The centralized deployment of the large-capacity HLR can greatly cut down the
operation expenditure (OPEX). It helps carriers to:
Reduce the number of NEs used in the network and simplify network
deployment.
Reduce the equipment maintenance cost and maintenance personnel cost.
Save power consumption and reduce the property leasing expense.
Laying the Foundation for Service Convergence
To offer subscribers with seamless communication experience over multiple types of
networks, carriers must provide subscriber-oriented network-across services. The
service convergence, however, is implemented based on data convergence. The
HLR9820 provides the ability to converge the subscriber data of various types of
services. It also provides standard and open interfaces. All these features lay the
foundation for service convergence.
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2 Overview of the HLR9820 2.1 Physical Structure
This section describes the physical structure of the HLR9820. It consists of:
Product Appearance
Cabinet Configuration
2.1.1 Product Appearance
This section describes the hardware composition of the HLR9820. It consists of:
Cabinet
OSTA 2.0 Subrack
Cabinet
The HLR9820 uses Huawei N68E-22 cabinets. Figure 2-1 shows an N68E-22 cabinet.
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Figure 2-1 HLR9820 cabinet
The N68E-22 cabinet is a standard 19" cabinet and complies with the following
international standards:
IEC60297-1, Dimensions of mechanical structures of the 482.6 mm (19 in) series
Part 1:Panels and racks
IEC60297-2, Dimensions of mechanical structures of the 482.6 mm (19 in) series
Part 2:Cabinets and pitches of rack structures
IEC60297-3, Dimensions of mechanical structures of the 482.6 mm (19 in) series
Part 3:Subracks and associated plug-in units
For the technical specifications of the N68E-22 cabinet, refer to section 4.3 "Cabinet
Specifications."
OSTA 2.0 Subrack
The HLR9820 adopts the ATCA-compatible OSTA 2.0 hardware platform. Figure 2-2
shows the OSTA 2.0 subrack.
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Figure 2-2 OSTA 2.0 subrack
The OSTA 2.0 subrack has the following features:
The subrack is 14 U high and 19" wide. It can be installed in any standard 19"
cabinet.
The subrack provides 14 front slots for the USPs and 14 back slots for the USIs.
The subrack is configured with a dual-star high-speed backplane. The backplane
provides the redundancy of the following buses:
Dual-star intelligent platform management bus (IPMB)
Service data bus
Power bus
Clock bus
The boards and modules are interconnected through the buses provided by the
backplane. Thus, the number of cables used between boards and modules is
greatly reduced.
The subrack can be configured with a maximum of four power modules, which
supply power to the components in the subrack through the backplane. The power
modules can work in 2+2 or 2+1 redundancy mode.
The subrack has one fan box that holds 12 fans. The fan box implements the heat
dissipation of the subrack.
The subrack provides rear cabling troughs. This customary design makes the
subrack maintenance convenient.
The subrack has passed the EMC and UL certifications.
The subrack supports the Network Equipment Building Specification (NEBS).
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2.1.2 Cabinet Configuration
Depending on the components installed in the cabinet, the HLR9820 cabinets can be
classified into:
Integrated cabinet
Extended cabinet
The components to be installed in the cabinets depend on the system capacity.
The components that can be installed in the integrated cabinet include the following:
Power distribution box (PDB)
SAU subrack
Air deflector
OSTA 2.0 subrack
KVMS
LAN switches
Disk array
Figure 2-3 shows the typical configuration of the integrated cabinet.
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Figure 2-3 Typical configuration of integrated cabinet
Integrated cabinet
PDB (3U)
OSTA 1.0 subrack (9U)
Filler panel (2U)
OSTA 2.0 subrack (14U)
Filler panel (1U)
Disk array (3U)
Filler panel (1U)
KVM(1U)
Air deflector (2U)
Filler panel (1U)
Cabling trough (1U)LAN switch-3 (1U)
Cabling trough (1U)
LAN switch-2 (1U)
Cabling trough (1U)
LAN switch-1 (1U)
Cabling trough (1U)
LAN switch-0 (1U)
Filler panel (1U)
The components that can be installed in the extended cabinet include the following:
PDB
SAU subracks
Air deflector
OSTA 2.0 subrack
Figure 2-4 shows the typical configuration of the extended cabinet.
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Figure 2-4 Typical configuration of extended cabinets
Extended cabinet 1
PDB (3U)
OSTA 1.0 subrack (9U)
OSTA 1.0 subrack (9U)
Air deflector (2U)
Filler panel (1U)
OSTA 2.0 subrack (14U)
Air deflector (2U)
Filler panel (3U)
Filler panel (2U)
Filler panel (1U)
PDB (3U)
OSTA 1.0 subrack (9U)
OSTA 2.0 subrack (14U)
Filler panel (1U)
OSTA 2.0 subrack (14U)
Air deflector (2U)
Filler panel (2U)
Filler panel (1U)
Extended cabinet 2
2.2 Logical Structure
The HLR9820 consists of the following functional layers:
Signaling Processing Layer
Subscriber Data Management Layer
Data Service Layer
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Data Storage Layer
O&M Layer
Figure 2-5 shows the logical structure of the HLR9820.
Figure 2-5 Logical structure of the HLR9820
HLR9820HLR-BE
Provision
System
NMS
Signaling
Network
Signaling Processing
SAU
HLR-FEO&M
BAM
Data Service
DSU
Cluster 1
DSU
Cluster 2
DSU
Cluster 3
Subscriber data
management
SMF
Data storageDBMS
DRU
Cluster 1
SMU
Service Processing
SCF
DRU
Cluster 2
BAM: Back Administration Module BE: Back End DSU: Data Service Unit
DBMS: Database Management System DRU: Data Routing Unit SCF: Service Control Function
FE: Front End SAU: Signaling Access Unit NMS: network management system
SMF: Subscriber Management Function SMU: Subscriber Management Unit
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2.2.1 Signaling Processing Layer
The signaling processing layer leads in and processes signaling messages. It consists
of:
SAU
SCF
SAU
The signaling access unit (SAU) performs the following functions:
Receiving the signaling messages sent from other NEs
Processing the received signaling messages to the TCAP layer
Sending the processed messages to the SCF for processing
SCF
The service control function (SCF) processes MAP service logics. It performs the
following functions:
Processing the MAP messages, such as the SRI request and location update
request, sent from the SAU
Processing the MAP message for inserting subscriber data initiated by the SMF
because of the operations such as updating subscriber data and simulated sending
the Cancel Location message
Interacting with the DRU to obtain the desired subscriber data from the DSU or
to update the subscriber data stored in the DSU
Implementing the authentication-related operations
2.2.2 Subscriber Data Management Layer
The subscriber data management layer manages the subscriber data and implements
the configuration of the global data. It consists of:
SMU
SMF
SMU
The subscriber management unit (SMU) performs the following functions:
Providing interfaces to business halls to lead in the provision system
Interpreting the human-machine language (MML) commands sent from the
provision system or the SMU client, and sending the commands to the SMF for
processing
SMF
The subscriber management function (SMF) processes the messages sent from the
SMU. It performs the following functions:
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Receiving the messages for the operations such as subscriber definition,
subscriber deletion, and subscriber data update from the SMU, verifying
parameters according to the related interface specifications, and checking service
conflict according to the related protocols
Initiating the MAP message for inserting subscriber data and sending the message
to the SCF during the operations such as updating subscriber data and simulated
sending of the Cancel Location message
Interacting with the DRU to query the subscriber data, global data, or template
data from the DSU or to modify the subscriber data, global data, or template data
in the DSU based on the MML command received from the SMU server
2.2.3 Data Service Layer
The data service layer provides data services that are independent of service
applications. It supports distributed data storage, data caching in memory, and remote
redundancy of the data unit. The data service unit consists of:
DRU
DSU
DRU
The data routing unit (DRU) queries the subscriber data and provides the data routing
function.
The HLR9820 uses multiple DSU clusters to store subscriber data. A routing module is
required to locate the DSU cluster, which stores the data queried, based on the
subscriber identity, and then to choose a DSU based on the load-balancing strategy to
provide data services.
The DRU stores the mapping between the Key values (UID and IMSI or MSISDN)
and the DSU cluster ID. In addition, the DRU stores the mapping between the IMSI of
a subscriber and the UID or MSISDNor the auxiliary IMSI (if the dual-IMSI service is
provided). Therefore, the DRU can locate the DSU cluster, in which the required
subscriber data is stored, based on the Key values, and choose a DSU from the DSU
cluster to provide the data based on the load-balancing strategy.
The HLR supports multiple DRU clusters. The routing data is stored in multiple DRU
clusters. The SMF and SCF modules store the mapping between the Key values of a
subscriber and the DRU cluster ID. Therefore, they can locate the DRU cluster, in
which the required subscriber data is stored, based on the Key values.
DSU
The HLR9820 uses multiple data service unit (DSU) clusters to store subscriber data.
The DSU provides, adds, deletes, or updates data upon the request of the DRU.
The DSU clusters store subscriber data based on the capacity-balancing strategy. All
the DSUs in a DSU cluster store the same subscriber data and work in load-sharing
mode.
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2.2.4 Data Storage Layer
The data storage layer adopts the highly reliable commercialized database
management system. It also uses the disk array to provide permanent storage of
subscriber data. The hard disks of the disk array adopt RAID technology and hot spare
disks to ensure the security of subscriber data.
2.2.5 O&M Layer
The O&M layer implements the operation and maintenance of the other functional
units.
The HLR9820 provides a graphical user interface (GUI) based on the tree structure for
the O&M terminals. The GUI is easy to use and allows efficient running of commands.
In addition, the network management system (NMS) can be flexibly built up based on
the network structure, management requirements, and investment scale. The O&M
terminals support concurrent access of multiple users from the local and remote ends.
The O&M layer performs the following functions:
Configuration management
Through the O&M terminals, users can configure the data such as the hardware
data, local site data, and signaling data.
Equipment maintenance
The O&M layer processes the maintenance commands sent from the client or
NMS. It helps the maintenance staff to identify or rectify faults.
Fault management
When a fault occurs, the O&M layer reports an alarm. Thus, the maintenance
staff can identify the fault in time.
Performance measurement
Through performance measurement, users can learn:
Operation status of the HLR9820
Signaling exchange
Utilization of user resources and system resources
The O&M layer provides reliable data for network planning, system monitoring,
and operation management. When the communication resources are insufficient,
the O&M layer can provide the detailed resource information on the equipment.
Trace management
Through the O&M terminals, users can perform interface tracing and subscriber
tracing, and view the information traced. The trace management helps the
maintenance staff to identify faults.
Provision of NM interfaces
The O&M layer provides NM interfaces. Through the NM interfaces, users can
connect the HLR9820 with the upper-level NMS to perform centralized
management and maintenance of the equipment.
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3 System Features 3.1 Distributed Structure
The distributed structure allows multiple functional entities that are identical in a
system to work in load-sharing mode to accomplish a certain function. The most
distinguished feature of the distributed structure is resource sharing in the system.
When any functional entity fails, the load will be automatically switched over to other
functional entities. Thus, the service provisioning of the whole system is not adversely
affected.
Figure 3-2 illustrates the distributed structure.
SMU
NMS
HLR-BE
HLR-FE
Open/Standard
interface
Signaling network
HLR9820
Data
Cluster
Data
ClusterData
Cluster
BAM
BAM
Provision System
NMS: network management system BAM: Back Administration Module BE: Back End
SMU: Subscriber Management Unit FE: Front End
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The HLR9820 consists of five logical layers: signaling processing layer, subscriber
data management layer, data service layer, data storage layer, and O&M layer. Each
layer adopts distributed processing. Thus, the whole system features a fully-distributed
structure.
The fully-distributed structure endues the HLR9820 with the following advantages:
High reliability
When any functional entity fails, the load is automatically switched over to other
functional entities. Thus, the service provisioning of the whole system is not
adversely affected.
Smooth expansion
During system expansion, only the related functional entities need to be added.
After detecting that the newly added functional entities are running stably, the
system automatically distributes the load evenly. Thus, the service provisioning
of the system is not adversely affected during the system expansion.
3.2 ATCA-Compatible OSTA 2.0 Hardware Platform The HLR9820 adopts the ATCA-compatible OSTA 2.0 hardware platform.
Composed of a series of PCI Industrial Computer Manufacturers Group (PICMG3.X)
specifications, the ATCA standards are widely accepted as the standards for the
next-generation, standard telecommunication hardware platforms.
The OSTA 2.0 platform adopts the Intel Architecture (IA), which allows the
high-performance and low-consumption processor, and the Carrier Grade Linux (CGL)
technology. It is a highly competitive server provided by Huawei for
telecommunication and IT markets.
In addition to complying with the ATCA standards, the OSTA 2.0 platform enjoys the
following advantages:
The whole equipment and monitoring equipment comply with the carrier-class
application design.
The service plane, control plane, and management plane are physically separated.
Thus, the lower-layer hardware planes are not adversely affected by other planes.
When the hardware needs to be upgraded, the software can still be used without
any modification. Thus, the system reliability is greatly improved.
The devices used in the OSTA 2.0 platform comply with the device selection
specifications for carrier-class equipment and the ETSI/NEBS standards.
The system is enhanced with the monitoring on equipment running, hardware
components, and external interfaces, and added with the fault diagnosis
mechanism and pre-alert for the subhealth status.
The OSTA 2.0 platform meets the anti-noise requirements and heat dissipation
requirements for carrier-class equipment.
The OSTA 2.0 platform adopts automatic fault detection and fault isolation
technologies. Thus, the fault detected can be isolated and will not adversely affect
the running of other parts.
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The perfect fault location design allows accurate identification of the faulty
device.
3.3 Memory Data Management Technology The memory manages all the subscriber data stored in the HLR9820. The board
memory accomplishes the data query and data modification related to service
processing. The external storage device (such as the disk array) of boards only
provides permanent storage of data. It is independent of service processing.
The memory data management endues the HLR9820 the following advantages:
The service processing is independent of the external data storage device of
boards.
If the external data storage device of boards fails, the service processing will not
be adversely affected.
Compared with the data management in hard disks, the memory data
management features higher throughput and shorter time delay. It greatly
enhances the system performance, especially for the large-capacity HLR.
3.4 Multi-Level Data Backup Mechanism The HLR9820 adopts the multi-level data backup mechanism. The multi-level data
backup mechanism enables subscriber data to be stored in different physical data
storage devices, ensuring the security of subscriber data.
The multi-level data backup comprises:
Level-1 backup
The subscriber data is stored in the memories of different boards. Multiple boards
form a cluster. The data of the master node is synchronized to the slave node.
Level-2 backup
The subscriber data stored in the board memory is backed up to the local hard
disk of the board. Two local hard disks work in RAID 1 mode.
Level-3 backup
The subscriber data stored in the board memory is backed up to the disk array.
The disk array has nine hard disks working in RAID. Hot spare disks are
configured for the hard disks of the disk array.
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Figure 3-1 Multi-level data backup
Level-1 backup
Cluster
Slave Master
Level-2 backup
Level-3 backup
Local hard disk
Disk array
3.5 Virtual HLR Function
The virtual HLR function allows a physical HLR to be divided into several logical
HLRs. Each logical HLR is equivalent to the HLR in the local network.
The virtual HLR function enables the local networks in different areas to share the
same physical HLR. It can realize centralized equipment maintenance, and distributed
service processing and subscriber data management.
The virtual HLR function allows authority-based and domain-based management and
helps carriers to provide differentiated services. It facilitates carriers to carry out
network planning and equipment maintenance.
The virtual HLR function can greatly reduce the number of NEs used in the network,
slash the equipment investment, and cut down the investment and expenses arising
from system upgrade and maintenance.
Figure 3-2 illustrates the virtual HLR function.
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Figure 3-2 Virtual HLR function
Virtual HLR 1
Virtual HLR 2
Virtual HLR 3
Local
network 1
Local
network 2
Local
network 3
HLR9820
3.6 Large Capacity and High Integrity
The HLR9820 provides large capacity and high integrity. It helps carriers to
implement centralized management and to cut down the OPEX.
The large capacity and high integrity feature of the HLR9820 provides the following
benefits:
Slashing the equipment maintenance cost and the maintenance manpower cost
Six cabinets in full configuration can support 100 million subscribers. The large
capacity feature and centralized management minimize the OPEX.
Simplifying operations
Carriers can access all the HLRs (HLRs in an area or a country) through a
provision system. Through the provision system, carriers can provide services,
such as issuing cards, defining subscribers, providing services, and query services,
for subscribers in an area or a country.
Saving network resources
The nearest HLR FE is accessed for call processing. Thus, the transmission over
the signaling network is simplified, and the network resources are saved.
3.7 Separate Data Processing and Service Processing The HLR9820 consists of the HLR-BE and the HLR-FE. It supports separate
deployment of the data part and the service part.
The separate deployment of the data part and the service part endues the HLR9820
with the following advantages:
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More flexible networking
The BE and FE can be deployed in different places. Thus, carriers can determine
the number and location of BEs and FEs based on the population distribution and
geographical conditions.
Enhanced system compatibility
The BEs of the HLR9820 provide standard and open data access interfaces,
through which the third-party equipment can access the HLR9820. Thus, carriers
will not have to bother with the problem of interconnecting systems of different
suppliers.
3.8 Physical Self-Redundancy Solutions
Immeasurable loss will be caused if services are interrupted or important data in the
HLR is lost because of maloperations, equipment failures, or natural disasters.
To improve the network security and reliability, Huawei provides the remote HLR
redundancy solution, that is, an HLR is added to the network to work as the
redundancy of the existing HLR. In normal conditions, the active HLR processes
various signaling messages and services. When the active HLR fails, the redundancy
HLR takes over the service processing, thus ensuring uninterrupted service
provisioning over the PLMN.
Huawei provides the following HLR redundancy solutions:
Seamless geographic redundancy solution
In the seamless geographic redundancy solution, the active and the redundancy
HLR are HUAWEI HLR9820 V900 products. The active and redundancy HLRs
work in active/standby mode or in load-sharing mode for service processing or
data processing.
In the seamless geographic redundancy solution, the database synchronization
involves data backup and data consistency check..
Figure 3-3 shows the principle of the database synchronization.
Figure 3-3 Synchronization of the databases
SCF SMF
Master DRU Slave DRU
Master DSU Slave DSU
Active HLR
SCF SMF
Master DRU Slave DRU
Master DSU Slave DSU
Redundancy HLR
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The active and redundancy HLRs have master and slave nodes. When the data in
the active HLR changes, the master DRU of the redundancy HLR backs up the
data from the master DRU of the active HLR, and the master DSU of the
redundancy HLR backs up the data from the master DSU of the active HLR.
Then, the slave nodes back up the data from the master nodes in the redundancy
HLR.
After the data backup is complete, data consistency check is performed to ensure
data consistency between the active HLR and the redundancy HLR. The data
consistency check is performed on only the master nodes of the active and
redundancy HLRs.
1+1 mated redundancy solution
The 1+1 mated redundancy solution allows two sets of Huawei HLRs to work in
active/standby mode. In the 1+1 mated redundancy solution, either HLR stores
the same subscriber data as an independent HLR. When the active HLR fails, the
redundancy HLR takes over all services from the active HLR.
N+1 mated redundancy solution
The N+1 mated redundancy solution allows the networking of N active HLRs
and one redundancy HLR. All the HLRs are provided by Huawei. Here, N ranges
from 1 to 16. Generally, a maximum of 10 active HLRs are recommended. The
redundancy HLR backs up the data of the active HLRs on a real-time basis. If one
or more active HLRs fail, the redundancy HLR takes over services from the
faulty active HLRs.
N+1 compatibility redundancy solution
The N+1 compatibility redundancy solution allows the networking of N active
HLRs and one redundancy HLR. The active HLRs can be provided by different
vendors, and the redundancy HLR is provided by Huawei. Here, N ranges from 1
to 16. Generally, a maximum of 10 active HLRs are recommended. The
redundancy HLR backs up the data of the active HLRs on a real-time basis. If one
or more active HLRs fail, the redundancy HLR takes over services from the
faulty active HLRs.
3.9 Smooth Data Convergence The HLR9820 supports smooth evolution towards the USC. It has the capability to
converge various types of service data, such as the service data of the HSS subscribers
and that of the AAA subscribers. It can greatly simplify the data convergence process
of traditional HLRs, laying the foundation for service convergence.
3.10 Standard and Open Data Access Interface
In traditional deployment of new services, carriers have to focus on:
Service logics
Complicated subscriber data management, including:
Data structure design
Data storage
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Data backup
Data redundancy
Data security mechanism
Data operations
The diversity of equipment provided by different vendors and different data
management mechanisms slow down the development of new services. Failing to
promptly deploying new services hinders carriers from forestalling the competition
predominance.
In addition to the capability of integrating the subscriber data of different services, the
HLR9820 provides a standard and open data access interface, through which the
third-party applications can obtain the subscriber data. This feature greatly slashes the
service deployment cost, simplifies the data complexity caused by the emergence of
new services, and helps carriers to provide new services.
3.11 Comprehensive Data Statistics and Analysis The HLR9820 backs up the subscriber data to an independent server at the specified
time. Through the independent server, users can query and learn the subscriber data in
detail.
This offline data processing mode helps carriers to learn:
Subscriber data of specific services
Overall subscriber information, including:
Service subscription and development trend
Roaming ratio
Network service features
Based on the information, carriers can learn the network operation, better understand
subscribers' behavior, and adjust market strategies in time. Thus, the HLR9820 can
help carriers to provide tailored services and gain competition predominance.
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4 Technical Specifications 4.1 Performance Specifications
Table 4-1 lists the performance specifications of the HLR9820.
Table 4-1 Performance specifications of the HLR9820
Item Performance Specifications
Maximum subscribers supported 100 million
Bearer networking modes supported TDM
ATM
IP
Number of TDM 64 kbit/s links
supported
2560
Number of TDM 2 Mbit/s links
supported
320
Number of ATM 2 Mbit/s links
supported
320
Number of M3UA links supported 2496
BNH command processing speed 2,000 pcs/second
NOTE
The full-IN GSM traffic model refers to the GSM traffic model that all the subscribers are
intelligent network (IN) subscribers. See Table 4-2.
Table 4-2 lists the full-IN GSM traffic model. In the GSM traffic model, the parameter
values are calculated based on 100,000 subscribers.
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Table 4-2 Full-IN GSM traffic model
Parameter Value (Times/Second/100,000 Subscribers)
SendAuthenticationInfo 10
UpdateLocation 10
SendRoutingInfo 40
SendRoutingInfoForSM 25
GprsUpdateLocation 1
4.2 Reliability Specifications Table 4-3 lists the reliability specifications of the HLR9820.
Table 4-3 Reliability specifications of the HLR9820
Item Reliability Specifications
System repair rate 0.3%
Availability 99.9997%
Fault detection rate > 95%
Mean time to repair (MTTR) < 1 h
Service interruption time of each upgrade or
expansion
< 30 seconds
Average service interruption time in a year < 5 minutes Duration from system power-on to service ready 10 minutes
Success rate of the switchover between redundancy
components
> 95%
Time required for the switchover between OSTA 1.0
boards
3 seconds
Time required for the switchover between OSTA 2.0
boards
10 seconds
4.3 Cabinet Specifications The HLR9820 hardware is installed in Huawei N68E-22 cabinets. Table 4-4 lists the
technical specifications of the N68E-22 cabinet.
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Table 4-4 Technical specifications of the N68E-22 cabinet
Item Specifications
Number of cabinets (in full
configuration)
6
Cabinet model N68E-22 server cabinet
Power supply 48 V DC
Cabinet dimensions (height x width
x depth)
2,200 mm x 600 mm x 800 mm
Available height in the cabinet 46 U (1 U = 44.45 mm = 1.75 inches)
Weight of the empty cabinet 100 kg
Weight of the fully-loaded
integrated cabinet
304 kg
Weight of the fully-loaded
extended cabinet (2 OSTA 1.0+1
OSTA 2.0)
277 kg
Weight of the fully-loaded
extended cabinet (1 OSTA 1.0+2
OSTA 2.0)
331 kg
Load-bearing capacity of the
equipment room floor
600 kg/m2
Floor space 2.88 m2
Heat dissipating capacity 12771.8 BTU
Cabling modes supported Upward cabling
Downward cabling
4.4 Power Consumption
Table 4-5 lists the power consumption of the HLR9820.
Table 4-5 Power consumption of the HLR9820
Cabinet Power Consumption (W)
Integrated cabinet (in full configuration) 3,213W
Extended cabinet (in full configuration 2 OSTA
1.0+1 OSTA 2.0)
3,218W
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Extended cabinet (in full configuration 1 OSTA
1.0+2 OSTA 2.0)
4,679W
OSTA 1.0 subrack (in full configuration) 579W
OSTA 2.0 subrack (in full configuration) 2,040 W
KVMS 24 W
FE LAN switch 35 W
GE LAN switch 90 W
Disk array 300 W
4.5 Clock Specifications
Table 4-6 lists the technical specifications of the clock system used in the HLR9820.
Table 4-6 Technical specifications of the HLR9820 clock system
Item Specifications
Clock
network
access
parameter
Minimum
accuracy Stratum-2 clock: 4 x 10
-7
Stratum-3 clock: 4.6 x 10-6
Pull-in range Synchronization accuracy of stratum-2 clock: 4 x 10-7
Synchronization accuracy of stratum-3 clock: 4.6 x
10-6
Maximum
frequency offset
Stratum-2 clock: 5 x 10-10
/day
Stratum-3 clock: 2 x 10-8
/day
Initial maximum
frequency offset
Stratum-2 clock: < 5 x 10-10
/day
Stratum-3 clock: < 1 x 10-8
/day
Long-term
phase
variation
Ideal working
status
MRTIE 1ms
Holdover working
status
MRTIE (ns) a x s + (1/2) x b x s2 + c
Here, s stands for the time in seconds, and MRTIE is in
nanosecond (ns).
Stratum-2 clock:
a = 0.5, b = 1.16 x 10-5
, c = 1000
Stratum-3 clock:
a = 10, b = 2.3 x 10-4
, c = 1000
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Clock
working
mode
Fast pull-in
Locked
Holdover
Free run
Input jitter
tolerance
See Figure 4-1.
Lowest accuracy: the maximum frequency offset in a long period (20 years) when the
external reference frequency is unavailable (when the clock works in free-run mode)
Maximum frequency offset: the maximum relative difference between the clock frequencies
in one unit of time during the continuous running of the clock
Pull-in range: the maximum bandwidth of the input signal that the clock system can locks
MRTIE: maximum relative time interval error, the variation of maximum peak-to-peak
delay of a tested clock relative to an actual reference clock within the test time
Figure 4-1 shows the input jitter tolerance of the clock system.
Figure 4-1 Maximum allowed input jitter and lower threshold of wander
Y (UI)
10 2
X
A0=36.9
10 1
A1=1.5
A2=0.2
1.2 10-5
1
10 20 2.4 k 18 k 100 k f (Hz)
10 -1
Peak-peak jitter and wander amplitude (log scale)
Slope coefficient is 20 dB/10
times sound interval
If the system can still work normally when the jitter frequency of an input signal is 1
kHz and the signal amplitude is more than 1.5 UI, you can infer that the input signal
satisfies requirements.
UI stands for unit interval. The reciprocal of the digital signal frequency is one UI. For example,
the UI of a 2.048 Mbit/s signal is 488 ns.
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4.6 EMC Specifications The HLR9820 complies with the following electromagnetic compatibility (EMC)
standards:
EN 55022 class A
CISPR 22 class A
ETSI EN 300 386
GB9254 class A
4.7 Environment Requirements This section describes the environment requirements for the HLR9820. The
environment requirements are based on the following standards:
GB 4798 Environmental conditions existing in the application of electric and
electronic products
ETS 300019 Equipment Engineering (EE); Environmental conditions and
environmental tests for telecommunications equipment
IEC 60721 Classification of environmental conditions
The environment requirements comprise the requirements for:
Storage Environment
Transportation Environment
Operation Environment
4.7.1 Storage Environment
This section describes the requirements for the storage environment of the HLR9820.
It consists of:
Climatic Requirements
Waterproof Requirements
Biological Requirements
Air Purity Requirements
Mechanical Stress Requirements
Climatic Requirements
Table 4-7 lists the climatic requirements for equipment storage.
Table 4-7 Climatic requirements for equipment transportation
Item Range
Temperature 40C to +70C
Relative humidity 10% to 100%
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Altitude 5000 m
Air pressure 70 kPa to 106 kPa
Temperature change rate 1C/min
Solar radiation 1120 W/m2
Heat radiation 600 W/m2
Wind speed 20 m/s
Waterproof Requirements
Generally, the equipment must be stored indoors.
Indoor storage
The floor where the equipment is placed must be protected against water. In
addition, the equipment must be protected against water from the auto
fire-fighting device and the air-conditioner.
Outdoor storage
If the equipment has to be placed outdoors, ensure that:
The crates are not damaged.
Waterproofing measures are taken to protect the crates against rain.
The floor where the crates are placed must be protected against water.
The crates are not exposed to direct sunlight.
Biological Requirements
Ensure that the storage area is protected against epiphyte or mildew and rodents.
Air Purity Requirements
The equipment must be stored in the environment that is free from explosive,
conductive, and magnetic conductive or corrosive dust.
Table 4-8 lists the air purity requirements for physically active substances.
Table 4-8 Air purity requirements for physically active substances in equipment storage
Physically Active Substances Density Diameter
Suspended dust 5.00 mg/m 75 m
Falling dust 20.0 mg/mh 75 m diameter 150 m
Sand 300 mg/m 150 m diameter 1000 m
Table 4-9 lists the air purity requirements for chemically active substances.
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Table 4-9 Air purity requirements for chemically active substances in equipment storage
Chemically Active Substances Density (mg/m3)
SO2 0.3 to 1.0
H2S 0.1 to 0.5
NO2 0.5 to 1.0
NH3 1.0 to 3.0
Cl2 0.1 to 0.3
HCl 0.1 to 0.5
HF 0.01 to 0.03
O3 0.05 to 0.1
Mechanical Stress Requirements
Table 4-10 lists the mechanical stress requirements for equipment storage.
Table 4-10 Mechanical stress requirements for equipment storage
Item Sub-Item Range
Sinusoidal
vibration
Motion 7.0 mm
Acceleration 20.0 m/s
Frequency range 2 Hz to 9 Hz 9 Hz to 200 Hz
Unsteady impact Impact response
spectrum II
250 m/s
Static payload 5 kPa
NOTE
Impact response spectrum: the maximum acceleration response curve generated by the equipment
under the specified impact excitation(Impact response spectrum II means that the duration of the
semi-sine impact response spectrum is 6 ms.)
Static payload: the total force that the equipment in the packages piled in the specified way can bear
from the top
4.7.2 Transportation Environment
This section describes the requirements for the transportation environment of the
HLR9820. It consists of:
Climatic Requirements
Waterproof Requirements
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Biological Requirements
Air Purity Requirements
Mechanical Stress Requirements
Climatic Requirements
Table 4-11 lists the climatic requirements for equipment transportation.
Table 4-11 Climatic requirements for equipment transportation
Item Range
Temperature 40C to +70C
Relative humidity 10% to 100%
Altitude 5000 m
Air pressure 70 kPa to 106 kPa
Temperature change rate 3C/min
Solar radiation 1120 W/m2
Heat radiation 600 W/m2
Wind speed 20 m/s
Waterproof Requirements
During the transportation of the HLR9820, ensure that:
The package is intact.
Waterproof measures are taken to prevent rain from soaking into the package.
The vehicle has no water accumulated inside.
Biological Requirements
Ensure that the transportation vehicle is protected against epiphyte or mildew and
rodents.
Air Purity Requirements
The air must be free from explosive, conductive, and magnetic conductive or corrosive
dust.
Table 4-12 lists the air purity requirements for physically active substances.
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Table 4-12 Air purity requirements for physically active substances in equipment transportation
Physically Active Substances Density Diameter
Suspended dust 75 m
Falling dust 3.0 mg/mh 75 m diameter 150 m
Sand 100 mg/m 150 m diameter 1000 m
Table 4-13 lists the air purity requirements for chemically active substances.
Table 4-13 Air purity requirements for chemically active substances in equipment transportation
Chemically Active Substances Density (mg/m3)
SO2 0.3 to 1.0
H2S 0.1 to 0.5
NO2 0.5 to 1.0
NH3 1.0 to 3.0
Cl2 0.1 to 0.3
HCl 0.1 to 0.5
HF 0.01 to 0.03
O3 0.05 to 0.1
Mechanical Stress Requirements
Table 4-14 lists the mechanical stress requirements for equipment transportation.
Table 4-14 Mechanical stress requirements for equipment transportation
Item Sub-Item Range
Sinusoidal
vibration
Motion 7.5 mm
Acceleration 20.0 m/s 40.0 m/s
Frequency range 2 Hz to 9 Hz 9 Hz to 200 Hz 200 Hz to 500 Hz
Random
vibration
Acceleration
spectrum density
10 m/s 3 m/s 1 m/s
Frequency range 2 Hz to 9 Hz 9 Hz to 200 Hz 200 Hz to 500 Hz
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Unsteady
impact
Impact response
spectrum II
300 m/s
Static payload 10 kPa
NOTE
Impact response spectrum: the maximum acceleration response curve generated by the equipment
under the specified impact excitation (Impact response spectrum II means that the duration of the
semi-sine impact response spectrum is 6 ms.)
Static payload: the total force that the equipment in the packages piled in the specified way can bear
from the top
4.7.3 Operation Environment
This section describes the requirements for the operation environment of the HLR9820.
It consists of:
Climatic Requirements
Biological Requirements
Air Purity Requirements
Mechanical Stress Requirements
Shockproof Requirements
Anti-Noise Requirements
Climatic Requirements
Table 4-15 lists the climatic requirements for system running.
Table 4-15 Climatic requirements for system running
Item Range
Temperature Long-term operation temperature: +5C to +40C
Short-term operation temperature: -5C to +45C
Relative humidity Long-term operation humidity: 45% to 75%
Short-term operation humidity: 5% to 95%
Altitude 4000 m
Air pressure 70 kPa to 106 kPa
Temperature change rate 15C/min
Solar radiation 700 W/m2
Heat radiation 600 W/m2
Wind speed 1 m/s
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Biological Requirements
Ensure that the HLR9820 is running in an environment that is protected against
epiphyte or mildew and rodents.
Air Purity Requirements
The air must be free from explosive, conductive, and magnetic conductive or corrosive
dust.
Table 4-16 lists the air purity requirements for physically active substances.
Table 4-16 Air purity requirements for physically active substances in system running
Physically Active Substances Density Diameter
Suspended dust 0.24mg/m3 75 m
Falling dust 1.5 mg/mh 75 m diameter 150 m
Sand 30 mg/m 150 m diameter 1000 m
Table 4-17 lists the air purity requirements for chemically active substances.
Table 4-17 Air purity requirements for chemically active substances in system running
Chemically Active Substances Density (mg/m3)
SO2 0.3 to 1.0
H2S 0.1 to 0.5
NO2 0.5 to 1.0
NH3 1.0 to 3.0
Cl2 0.1 to 0.3
HCl 0.1 to 0.5
HF 0.01 to 0.03
O3 0.05 to 0.1
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Mechanical Stress Requirements
Table 4-18 lists the mechanical stress requirements for system running.
Table 4-18 Mechanical stress requirements for system running
Item Sub-Item Range
Sinusoidal
vibration
Motion 3.5 mm
Acceleration 10.0 m/s
Frequency range 2 Hz to 9 Hz 9 Hz to 200 Hz
Unsteady
impact
Impact response spectrum
II
100 m/s
Static payload 10k Pa
NOTE
Impact response spectrum: the maximum acceleration response curve generated by the equipment
under the specified impact excitation (Impact response spectrum II means that the duration of the
semi-sine impact response spectrum is 6 ms.)
Static payload: the total force that the equipment in the packages piled in the specified way can bear
from the top
Shockproof Requirements
The HLR9820 complies with the ETS 300 019-2-4-AMD standards.
Anti-Noise Requirements
The sound power noise is smaller than 7.2 bel. The reference standard is EST 300
753, and the test standard is ISO7779.
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5 Acronyms and Abbreviations A
AAA Authentication, Authorization and Accounting
ARPU Average Revenue Per User
AS Application Server
ATCA Advanced Telecommunications Computing Architecture
ATI Any Time Interrogation
ATM Asynchronous Transfer Mode
AuC Authentication Center
B
SAU Signaling Access Unit
BAM Back Administration Module
BE Back End
BSS Base Station System
C
CAMEL Customized Applications for Mobile Network Enhanced Logic
CGL Carrier Grade Linux
CRBT Color Ring Back Tone
CS Circuit Switched
CSCF Call Session Control Function
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D
DC Direct Current
DRU Data Routing Unit
DSU Data Service Unit
E
EIR Equipment Identity Register
EMC Electromagnetic Compatibility
F
FE Front End
G
GGSN Gateway GPRS Support Node
GMLC Gateway Mobile Location Center
GPRS General Packet Radio Service
GSM Global System for Mobile Communications
GUI Graphical User Interface
GUP General User Profile
H
HLR Home Location Register
HSS Home Subscriber Server
I
IA Intel Architecture
IM Instant Messaging
IMS IP Multimedia Subsystem
IMSI International Mobile Subscriber Identity
IP Internet Protocol
IPMB Intelligent Platform Management Bus
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M
MAP Mobile Application Part
MGCF Media Gateway Control Function
MML Man-Machine Language
MMS Multimedia Messaging Service
MNP Mobile Number Portability
MSC Mobile Switching Center
N
NEBS Network Equipment Building Specification
NMS Network Management System
O
ODB Operator Determined Barring
OPEX Operating Expenditure
OSTA Open Standards Telecom Architecture
P
PICMG PCI Industrial Computer Manufacturers Group
PS Packet Switched
PSTN Public Switched Telephone Network
S
SAU Signaling Access Unit
SCF Service Control Function
SCP Service Control Point
SGSN Serving GPRS Support Node
SMC Short Message Center
SMF Subscriber Management Function
SMU Subscriber Management Unit
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GSM-R HLR9820 Product Description
Issue 1.0 (2013-02-25) Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd.
Page 45 of 45
SSP Service Switching Point
T
TCAP Transaction Capabilities Application Part
TDM Time Division Multiplex
U
UL Underwriters Laboratories Inc
UMTS Universal Mobile Telecommunications System
USC Unified Subscriber Centre
UTRAN UMTS Terrestrial Radio Access Network
V
VLR Visitor Location Register