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www.huawei.com
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved.
GU HLR9820V900R006Product Description
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page2
Foreword
The HLR9820 is shared by the Circuit Switched (CS)
domain and the Packet Switched (PS) domain on the
GSM or UMTS network. It provides the functions of the
Home Location Register (HLR).
2
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page3
References
� HLR9820 V900R006 Description Manuals
� HLR9820V900R006 Hardware Description
� HLR9820V900R006 Software Description
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page4
Objectives
Upon completion of this course, you will be able to:
� Know Huawei SingleSDB solution, hardware and functional
structure of the HLR9820, functions of the functional modules, and
relationship between these modules
� Know services and functions of the HLR9820
� Know the reliability design of the HLR9820
� Know the features and technical specification of the HLR9820
3
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page5
Contents
1. Overview of HLR98201. Overview of HLR9820
2. HLR9820 V900R006 Features
3. HLR9820 V900R006 System Structure
4. HLR9820 V900R006 Services and Functions
5. HLR9820 V900R006 Reliability Design and Technical
Specification
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page6
Function of the HLR/AUC
�The HLR manages mobile subscriber data. In a PLMN, multiple
HLRs may be deployed to meet actual requirements.
� The HLR stores mobile subscribers’ IMSIs and MSISDNs.
� The HLR also stores the information such as the location
information (VLR number), basic service data, service
restriction data (roaming restriction), and supplementary
service data.
�AuC
� The AuC generates and stores encryption and authentication
data for mobile subscribers.
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Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page7
Product Positioning
The HLR9820 is used in
Huawei SingleSDB solution.
The network structure is
shown as follows:
MSC Server
HLR9820
SCP SMC GMLC
Signaling
network
Signaling
network
Control layer
Service layer
BE
FE
SGSN
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page8
Overview of the HLR9820
The HLR9820 is shared by the Circuit Switched (CS) domain and the
Packet Switched (PS) domain on the GSM or UMTS network. It
provides the functions of the HLR. Logically, the HLR9820 consists of
the BE and the FE, which implement independent data storage and
service processing. The functions of the BE and the FE are as follows:
BE
The BE stores the subscriber data. It adds, deletes, updates, and
queries data at the request of the FE.
FE
The FE processes signaling messages and service logics and obtains
data from the BE.
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Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page9
Overview of the HLR9820 (Cont.)
Based on whether an independent operations and
maintenance unit (OMU) is configured for the FE and BE,
the product applications for the HLR9820 are as follows:
� Integrated deployment: The FE and BE are configured
with only one OMU.
� Separated deployment: The FE and BE are configured
with independent OMUs.
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page10
Integrated Deployment of the FE and BE
Signaling interface
FE
BE
HLR9820
(V900R006)
O&M interface
Provisioning
interface
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Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page11
Separated Deployment of the FE and BE
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page12
Protocol InterfacesThe GU-HLR provides open
and standard interfaces. It
supports a number of
signaling and protocols to
interwork with various
devices. The GU-HLR
features a powerful and
flexible networking
capability. The following
figure shows the interfaces
between the GU-HLR and
other NEs.
7
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page13
Interfaces Supported by the GU-HLR in the PLMN
Interface Interworking
Device
Signaling
Protocol
Bearer
Type
Physical
Interface
C MSC MAP IP/TDM E1/GE
D VLR MAP IP/TDM E1/GE
Gr SGSN MAP IP/TDM E1/GE
Gc GGSN MAP IP/TDM E1/GE
J SCP MAP IP/TDM E1/GE
Lh GMLC MAP IP/TDM E1/GE
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page14
MAP Protocol Stack
TCAP
SCCP
SCTP
IP
MAC
HLR
M3UA
MAP
TCAP
SCCP
SCTP
IP
MAC
M3UA
MAP
C/D/J
Gs/Gr
(b) IP
HLR
C/D/J
Gs/Gr
(a) TDM
TCAP
SCCP
MTP-1
MAP
TCAP
SCCP
MTP-1
MAP
MTP-2 MTP-2
MT
P-3
MTP-3
8
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page15
Contents
1. Overview of HLR9820
2. HLR9820 V900R006 Features 2. HLR9820 V900R006 Features
3. HLR9820 V900R006 System Structure
4. HLR9820 V900R006 Services and Functions
5. HLR9820 V900R006 Reliability Design and Technical
Specification
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page16
System Features1. Distributed structure
The distributed structure allows multiple functional entities that are identical in
a system to work in load-sharing mode to accomplish a function.
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Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page17
2. Advanced hardware platform
The GU HLR9820 adopts the OSTA 2.0 hardware
platform that is compatible with the Advanced
Telecom Computing Architecture (ATCA).
3. In-memory data management
The memory manages all the subscriber data
stored in the GU HLR9820. The board memory
implements data query and data modification
related to service processing. The external
storage device (such as the disk array) is
independent of service processing. It provides
only permanent storage of data.
4. Multi-level data backup mechanism
The GU HLR9820 adopts the multi-level data
backup mechanism. This mechanism enables the
system to store subscriber data in different
storage devices, ensuring data security.
Local hard disk
Disk array
Level-2
backup
Slave Master
Level-1
backup
Cluster
Level-3
backup
System Features (Cont.)
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page18
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.
6. Large capacity and high integration
In the case of full configuration, five subracks of
the HLR9820 can store the dynamic data of 100
million subscribers or static data of 200 million
subscribers.
7. Seamless Geographic Redundancy
Data synchronization between the GU HLR9820s in
different places is implemented by real-time data
duplication and periodical data consistency check.
8. Standard and Open Data Access Interfaces
9. Comprehensive Data Statistics and Analysis
System Features (Cont.)
10
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page19
Contents
1. Overview of HLR9820
2. HLR9820 V900R006 Features
3. HLR9820 V900R006 System Structure3. HLR9820 V900R006 System Structure
4. HLR9820 V900R006 Services and Functions
5. HLR9820 V900R006 Reliability Design and Technical
Specification
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page20
Contents
3.1 HLR9820 V900R006 Hardware Structure3.1 HLR9820 V900R006 Hardware Structure
3.2. HLR9820 V900R006 Software Structure
3.3. HLR9820 V900R006 Board Software
3.4. HLR9820 V900R006 Board Configuration Example
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Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page21
Advanced Hardware Platform The GU HLR9820 adopts the OSTA 2.0 hardware platform that is compatible with the
Advanced Telecom Computing Architecture (ATCA).
The OSTA 2.0 platform has the following advantages:
�The equipment and monitoring system comply with the carrier-class application design.
�The service plane, control plane, and management plane are physically separated. Therefore,
the lower-layer hardware planes are not adversely affected by other planes. If the hardware
needs to be upgraded, the software can still be used without any modification. Therefore, the
system reliability is greatly improved.
�The components used in the OSTA 2.0 platform comply with the component selection
specifications for carrier-class equipment and the ETSI/NEBS standards.
�The system is enhanced with the function of monitoring the system operation, hardware
components, and external interfaces. In addition, it adopts the fault diagnosis mechanism and
provides pre-alert when a component is in a border line state between normal operation and
fault.
�The OSTA 2.0 platform meets the sound-proof and heat dissipation requirements for
telecommunications equipment.
�The OSTA 2.0 platform adopts fault detection and fault isolation technologies. Therefore, the
detected faults are isolated and will not adversely affect the running of other parts of the
system.
�The OSTA 2.0 platform adopts optimized fault location design, which allows accurate
identification of a faulty component.
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page22
Hardware Structure - Product Appearance
The GU HLR9820 adopts Huawei
N68E-22 cabinet.
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Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page23
Based on the configuration of internal
components, the cabinets are
classified into integrated
configuration cabinet and expansion
cabinet. An integrated configuration
cabinet is permanently numbered 0.
Expansion cabinets are optional. Up
to three expansion cabinets
(numbered from 1 to 3) are
configured for HLR9820V900R006.
Internal components in the cabinets
include:
�PDB
�OSTA2 subrack
�LAN switch
�Disk array
�Filler panel
Hardware Structure - Internal Components
Figure 1 Integrated configuration cabinet
Figure 2 Expansion cabinet
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page24
OSTA 2.0 Subrack - T8280
Design standard
NEBS GR-63-core and ETSI 300 019 CLASS 3.1
Dimension 619.5 mm (H) x 482.6 mm x (W) x 450 mm (D)
Capacity 14 standard slots (1.2 inch /slot)
Structure Front boards and back boards are installed back to back, with the backplane
in between. (The dimensions of front boards and back boards are different.)
Cabling Cables are routed from the rear of the subrack.
Heat
dissipation
Each subrack is equipped with two fan boxes. The fan box draws air at the
front and both sides and exhausts air out through the rear of the subrack.
Power supply -40.5 V DC to -72 V DC
Temperature �Long-term operating temperature: 5°C to 45°C�Short-term operating temperature: -5°C to +50°C
Humidity �Long-term operating humidity: 5% RH to 85% RH
�Short-term operating humidity: 5% RH to 90% RH
Fans
PEM
Front Back
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Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page25
� Front structure of the subrack
� The subrack provides 14 slots for
installing the universal process blades
(UPBs) and switch units (SWUs).
� The backplane is located in the subrack
and is used to transmit signals between
boards.
� The fan boxes are located under the
board slots. The two fan boxes can be
maintained separately.
� The slots for the shelf management
modules (SMMs) are located at the
bottom front of the subrack. The SMM
manages all the boards, fans, and power
supplies of the subrack. Generally, two
SMMs are configured.
OSTA 2.0 Subrack - T8280 (Cont.)
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page26
� Rear structure of the subrack
� The subrack provides 14 slots
for installing the universal
service interface units (USIs) and
switch interface units (SWIs).
� The slots for the subrack data
modules (SDMs) are located at
the bottom rear of the subrack.
The SDM and the SMM are
installed in pairs. Two SDMs can
be configured.
� The power entry modules (PEMs)
are located above the SDM
boards. Each subrack has two
PEMs, which can be maintained
independently.
OSTA 2.0 Subrack - T8280 (Cont.)
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Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page27
� IPMB, Base, and Fabric buses are configured in OSTA 2.0 subracks.
� The intelligent platform management bus (IPMB) is the monitoring and
device management bus of the OSTA 2.0 subrack. It connects all the
devices in the OSTA 2.0 subrack. The IPMB allows the SMM to manage all
the hardware in the subrack.
� The BASE bus is the management and control bus of the OSTA 2.0
subrack. It provides a channel for software loading, alarm reporting, and
maintenance message delivery. All boards are connected to the SWU
through the Base plane. The SWU exchanges maintenance messages
among all the boards.
� The FABRIC bus provides a data channel for the system service plane. It
transmits the service information of the system. All the UPBs are
connected to the SWU through the FABRIC bus. They exchange service
messages through the SWU.
OSTA 2.0 Subrack - T8280 (Cont.)
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page28
The boards can be classified into the following types based on their position:
� Front board
The front boards, located in the front of a subrack, can be classified into the following types:
� Universal Process Blade (UPB): processes data and services by using the service applications
running on the board.
� Switching Unit (SWU): implements layer-2 network switching and optical switching.
� System Management Unit (SMU): manages the components in a subrack.
� Back board
The back boards, installed back-to-back with the front boards, provide interfaces for the front
boards. The back boards can be classified into the following types:
� Universal Service Interface Unit (USI): interface board of the UPB
� Switching Interface Unit (SWI): interface board of the SWU
� Subrack Data Module (SDM): interface board of the SMM
� Backplane
The backplane is located between the front boards and the back boards. It transmits signals
between boards.
Hardware Structure - Boards
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Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page29
UPB Board ClassificationThere are three types of physical UPB boards, namely, UPBA0 and UPBA2, and UPBA6.
Each UPBA0 board is configured with no hard disk and a one 4 GB NAND Flash daughter
board. Each UPBA2 board is configured with no daughter board and two hot-swap 2.5-
inch SAS hard disks, with a capacity of 146 GB. Each UPBA6 board is configured with no
daughter board and two hot-swap 2.5-inch SAS hard disks, with a capacity of 300 GB.
Different modules are deployed on UPB boards to provide different functions. The
following table describes the mapping between physical boards and logical boards:
Physical
BoardLogical Board Back Board Function
UPBA0 GUFEU ETIA2/ETIA0/USIA1 Implement the signaling processing subsystem.
UPBA2/UPBA6
USDRU USIA1 Implement the data service subsystem.
USDSU - Implement the data service subsystem.
USDMU USI3 Implement the data storage subsystem.
USPGW USIA1 Implement the provisioning gateway.
USRSU USIA1 Implement the data service subsystem.
USPMU USI2Implement the subscriber data management subsystem and data storage subsystem.
OMU USIA7 Implement the O&M subsystem.
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page30
USI Board ClassificationServing as interface boards of UPBs, the USIs provide various
external interfaces. USIs configured with different daughter boards
provides different interfaces. GU HLR9820 uses the following types
of USI boards:
Board Description
USI2
The board is configured with two external GE daughter boards to provide four
Ethernet interfaces (10/100/1000M Base-T auto-sensing, RJ45 connectors).
The board is configured with one external FC daughter board to provide two 2-
Gbit/s FC interfaces, which support FC-AL, FC-SW, point-to-point, and 1-Gbit/s or
2-Gbit/s autonegotiation.
USI3
The board is configured with one external GE daughter board to provide two
Ethernet interfaces (10/100/1000M Base-T auto-sensing, RJ45 connectors).
The board is configured with two external FC daughter boards to provide four 2-
Gbit/s FC interfaces, which support FC-AL, FC-SW, point-to-point, and 1-Gbit/s or
2-Gbit/s autonegotiation.
USIA1
The board is configured with two external GE daughter boards to provide four
Ethernet interfaces (10/100/1000M Base-T auto-sensing, RJ45 connectors).
USIA7
The board is configured with three external GE daughter boards to provide six
Ethernet interfaces (10/100/1000M Base-T auto-sensing, RJ45 connectors).
16
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page31
ETI Board Classification
The ETI provides various interfaces for UPBs to communicate
with external devices. It must be configured together with
UPBs. GU HLR9820 uses the following types of ETI boards:
Board Description
ETIA0
The board is configured with two ETMA daughter boards to provide two DB-78 interfaces. Each ETMA daughter board provides 16 E1/T1 interfaces.
ETIA2
The board is configured with one ETMA daughter board to provide one DB-78 interface. The ETMA daughter board provides 16 E1/T1 interfaces.The board is configured with one external GE daughter board to provide two Ethernet interfaces
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page32
SWU and SWI Boards
Classification� SWU boards provide the layer-2 network switching, configuration
restoration functions and device management functions. There are
SWUA0 and SWUA1 boards.
� SWUA1 boards implement TDM narrowband switching while SWUA0
boards do not.
� SWI boards are back boards of SWUs. It must be configured together
with the SWU. SWI boards provide external service and cascading
interfaces for the SWU. There are SWIA0 and SWIA1 boards.
� Compared with SWIA0, SWIA1 boards provide 2 x line clock input and
1 x BITS clock input.
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Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page33
Contents
3.1 HLR9820 V900R006 Hardware Structure
3.2. HLR9820 V900R006 Software Structure3.2. HLR9820 V900R006 Software Structure
3.3. HLR9820 V900R006 Board Software
3.4. HLR9820 V900R006 Board Configuration Example
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page34
Functional Structure
Logically, HLR9820 consists of the front end (FE) and back end (BE). The FE processes protocols
and services. The BE stores, queries, and manages subscriber data.
In terms of functions, the UIM consists of five functional subsystems, the signaling processing
subsystem, the subscriber data management subsystem, the data service subsystem, the data
storage subsystem, and the O&M subsystem.
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Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page35
Signaling Processing Subsystem
The signaling processing subsystem provides the following functions:
� The signaling processing subsystem receives and processes signaling
messages. It consists of the Broadband Signaling Gateway (BSG) and
Call Control Unit (CCU).
� The BSG processes signaling messages at the MTP2 layer and MTP3
layer and forwards the processed messages to the CCU.
� The CCU completes protocol processing at the SCCP, TCAP, and MAP
layers, as well as service processing. It obtains subscriber data from
the data service subsystem and modifies the subscriber data.
The signaling processing subsystem is deployed on GUFEU boards,
which are physically implemented by UPBA0 boards.
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page36
Subscriber Data Management
SubsystemThe subscriber data management subsystem provides the following
functions:
� Supports centralized service provisioning for different FEs.
� Provides open Human-Machine Language (MML) and Simple Object
Access Protocol (SOAP) interfaces.
� Supports connection from Web clients.
� Implements authentication and authority verification on the users of
the provisioning system and Web clients.
� Manages subscription data.
The subscriber data management subsystem is deployed on USPGW
boards, which are physically implemented by UPBA2/UPBA6 boards.
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Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page37
Data Service Subsystem
� The DRU provides the data routing function.
� The subscriber data is stored in multiple DSU clusters. Based on the
subscriber identity, the DRU identifies the DSU cluster in which the
required subscriber data is stored, and then selects a DSU node based
on the load balancing strategy to provide data services.
� The DSU serves as the in-memory database of the USCDB. It performs
the functions of adding, deleting, updating, and providing data upon
request, processing data requests, and returning the processing result.
The data service subsystem is deployed on USDRU/USDSU boards,
which are physically implemented by UPBA2/UPBA6 boards.
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page38
Subscriber Storage Subsystem
� The data storage subsystem consists of DMU boards and the
disk array.
� The physical database is independent of service processing. It
provides only permanent storage of global data, subscriber
data, and route data.
The physical database is deployed on the DMU board, which
connects to the disk array through fabric cables. It uses the
Oracle database management software.
The DMU board is physically deployed in UPBA2/UPBA6 boards.
20
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page39
O&M Subsystem
� The functions of the O&M subsystem are implemented by OMU
boards. Typically, a pair of OMU boards is configured in slots 0 and 2
in the basic subrack.
� The two OMU boards work in active/standby mode.
� Active and standby OMU boards periodically send heartbeat messages
to each other to notify their peer nodes of their current state.
� If the FE and BE are deployed in integrated mode, the FE and BE are
managed by the same O&M subsystem. If the FE and BE are deployed
in separate mode, the FE and BE are managed by different O&M
subsystems. OMU boards are physically deployed on UPBA2/UPBA6
boards.
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page40
Contents
2.1 HLR9820 V900R006 Hardware Structure
2.2. HLR9820 V900R006 Software Structure
2.3. HLR9820 V900R006 Board Software2.3. HLR9820 V900R006 Board Software
2.4. HLR9820 V900R006 Board Configuration Example
21
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page41
HLR9820 Board Software FE board
GUFEU Operating system: Novell SUSE Linux Enterprise Server 10 SP3 for x86_32
Implements the functions of the signaling processing subsystem
Version software: GU-HLR-FE application software
USCDB board
USDRU Operating system: Novell SUSE LinuxImplements the functions of the data service subsystem
Version software: USCDB application software
USDSU Operating system: Novell SUSE LinuxImplements the functions of the data service subsystem
Version software: USCDB application software
USDMU Operating system: Novell SUSE Linux
Implements the functions of the data storage subsystem
Database: Oracle Database 11g Enterprise Edition Release 11.1.0.7.0 (Server/Client)
Version software: USCDB application software
USPGW Operating system: Novell SUSE LinuxImplements the functions of the data management subsystem
Version software: USCDB application software
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page42
USCD board
USRSU Operating system: Novell SUSE Linux Implements the functions of the data service subsystem
Version software: USCDB application
software
USPMU Operating system: Novell SUSE Linux Implements the functions of the subscriber data management and data storage subsystems
Database: Oracle Database 11g Enterprise Edition Release 11.1.0.7.0 (Server/Client)
Version software: USCDB application
software
OMU board
OMU Operating system: Novell SUSE Linux
Implements the functions of the O&M subsystem
Database: Oracle Database 11g Enterprise Edition Release 11.1.0.7.0 (Server)
Version software: OMU application
software
HLR9820 Board Software
(Cont.)
22
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page43
Contents
2.1 HLR9820 V900R006 Hardware Structure
2.2. HLR9820 V900R006 Software Structure
2.3. HLR9820 V900R006 Board Software
2.4. HLR9820 V900R006 Board Configuration Example2.4. HLR9820 V900R006 Board Configuration Example
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page44
Typical Configuration
The following figure
shows the configuration
of the GU HLR9820
when USDRU and
USDSU are used to
support 10 million
subscribers on a TDM or
an IP network.
23
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page45
Contents
1. Overview of HLR9820
2. HLR9820 V900R006 Features
3. HLR9820 V900R006 System Structure
4. HLR9820 V900R006 Services and Functions4. HLR9820 V900R006 Services and Functions
5. HLR9820 V900R006 Reliability Design and Technical
Specification
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page46
Services and Functions Provided
by the HLR9820� Mobility management
Location update, Location cancellation, Purge of MSs,
Authentication information sending, Authentication failure report,
Subscriber data insertion, Subscriber data deletion, HLR fault
recovery, VLR fault recovery, and SS indication check
� Call processing
Routing information sending and Roaming number provision
� Supplementary service management
Supplementary service registration, Supplementary service
deregistration, Supplementary service activation, Supplementary
service deactivation, Supplementary service query, Supplementary
service password registration, and Supplementary service
password retrieval
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Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page47
Functions Provided by the HLR9820 (Cont.)
� Subscriber data management
Subscriber definition, Subscriber deletion, Card reissue, MSISDN
change, MSISDN/IMSI query, Service setting/query, Dynamic
information query, Location information modification, Alternative
processing of the services not supported by the MSC/VLR,
Subscriber data statistics
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page48
Contents
1. Overview of HLR9820
2. HLR9820 V900R006 Features
3. HLR9820 V900R006 System Structure
4. HLR9820 V900R006 Services and Functions
5. HLR9820 V900R006 Reliability Design and Technical 5. HLR9820 V900R006 Reliability Design and Technical
SpecificationSpecification
25
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page49
Hardware Reliability
� Redundancy and backup design
� Reliable power supply
� Distributed structure of boards
� IP-based dual-plane communication
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page50
Software Reliability
� Distributed Structure of Software Modules
� Flow Control
� Automatic Load Balancing
� Automatic Fault Detection and Self-Healing
� Switchover upon Failure
� Rollback upon Upgrade Failure
� In-Memory Data Management
� Distributed Storage of Subscriber Data
� Backup and Restoration of Subscriber Data
� Data Consistency Check
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Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page51
Performance Specifications
Item Specifications
Maximum number of subscribers
supported
100 million dynamic
subscribers/200 million static
subscribers
Bearer networking modes
supported
IP/TDM
Maximum number of 64 kbit/s
TDM links supported
11,776
Maximum number of 2 Mbit/s
TDM links supported
736
Maximum number of SCCP links 11,776
Maximum command processing
speed of the provisioning system
(in full configuration)
10,000
Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page52
Cabinet Specifications Item Specifications
Model N68E-22 server cabinet
Power supply -48 V DC
Dimensions (height x width x depth) 2200 mm x 600 mm x 800 mm (86.61 in. x 23.62 in. x 31.50 in.)
Available height in the cabinet 46 U (1 U = 44.45 mm = 1.75 in.)
Weight of the empty cabinet 100 kg (220.5 lb)
Weight of a fully-loaded integrated configuration cabinet
290kg
Weight of a fully-loaded expansion cabinet
325kg
Load-bearing capacity of the floor in the equipment room
≥ 600 kg/m2 (1323 lb/m2)
Required floor space 0.48 m2 (5.17 ft2)
Heat dissipation 12771.8 BTU
Cabling modes supported Overhead cabling and underfloor cabling
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