02_HLR_AC_EIR_Architecture.pdf

Nokia Siemens Networks

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3G Core Network

HLR/AC/EIR i-Series ArchitectureTraining Document

HLR/AC/EIR i-Series Architecture

2 (29) Nokia Siemens Networks

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Contents

1 Objectives ...............................................................................................4

2 Architecture ............................................................................................5 2.1 Block diagram of the DX 200 HLRi...........................................................5 2.2 Capacity of High Capacity HLRi ...............................................................6 2.3 HLRi Cabinets ..........................................................................................6

3 Units in DX 200 HLR/AC/EIR i-series ....................................................8 3.1 ACU - Authentication Center Unit.............................................................8 3.2 BDCU - Basic Data Communications Unit ...............................................9 3.3 CMM - Central Memory and Marker.......................................................10 3.4 CLSU - Clock System Unit .....................................................................11 3.5 CLBU - Clock and Alarm Buffer Unit ......................................................13 3.6 CCSU - Common Channel Signalling Unit .............................................14 3.7 DBDU - Database Distributor Unit..........................................................15 3.8 EMU - Equipment Main Unit...................................................................16 3.9 EIRU - Equipment Identity Register Unit ................................................17 3.10 ET - Exchange Terminal.........................................................................18 3.11 GSW 512 - Group Switch 512................................................................19 3.12 HLRU - Home Location Register Unit ....................................................20 3.13 MB - Message Bus.................................................................................21 3.14 OMU - Operation and Maintenance Unit ................................................22 3.15 PDFU - Power Distribution Fuse Unit.....................................................23 3.16 STU - Statistical Unit ..............................................................................24 3.17 SD3C-A and SD4C-A - Storage device cartridges .................................25 3.17.1 SD4C-A Storage device cartridge .......................................................25 3.17.2 SD3C-A - Storage device cartridges ......................................................26

4 LAN in HLR ...........................................................................................27



1 Objectives After completing this module, the student should be able to:

List the main functions of HLR/AC/EIR. List the functional units of HLR. Describe the physical realisation, including plug-in units and the

interfaces of these units.

List the redundancy principles for the units in HLR. Explain the dimensional capabilities of each functional unit. Explain the possibility to use the same hardware for different

purposes with different pre-processor software.



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2 Architecture The architecture of the DX 200 HLRi/ACi/EIRi is similar to the MSCi/VLRi. It is designed with a modular software and hardware structure. Its functions are divided among several functional entities, called functional units.

In the presented document the terms DX 200 HLRi are used to denote the DX 200 HLRi/ACi/EIRi. Figure 1 presents the block diagram of the DX 200 HLRi.

2.1 Block diagram of the DX 200 HLRi

Figure 1 Block diagram of the DX 200 HLRi

GSW

EIRU CCSU CMM BDCU

ACU EMU HLRU STUDBDU OMU

X.25 or LAN

MESSAGE BUS

ET

CLS

ET

MSC

HLR

VDU and LPT

LAN LAN LAN LAN LAN LAN

DN98617008

to NMSand CEIR



2.2 Capacity of High Capacity HLRi

M12 HLRi with High Capacity feature can support following capacity for the various subscriber database.

2.3 HLRi Cabinets

HLRi has two types of cabines

HLGC Home Location Group switch Cabinet 1 Cabinet

HLRC - Home Location Register Cabinet 2 cabinets (Basic Configuration) and maximum configuration can have 6 cabinets

Database Maximum capacity Maximum unit Maximum capacity (sub.)

HLR 240,000 sub. per pair

10 pairs 2,400,000 + 800,000 Telemetric

AC 480,000 sub. per pair

5 pairs 2,400,000

EIR 7 units White list:

200,000 IMEI entries (11,000,000 IMEIs/entry)

Grey list:

4 million IMEI entries (11,000 IMEIs/entry)

Black list:

4 million IMEI entries (11,000 IMEIs/entry)



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3 Units in DX 200 HLR/AC/EIR i-series 3.1 ACU - Authentication Center Unit

Redundancy: 2n, n=15 (HLRi can contain up to five pairs of ACUs, each with a capacity of 240,000 subscribers)

Purpose: The ACU is responsible for the storage of the authentication data. It also provides authentication triplets for user authentication and performs the speech encryption functions.

Type: Computer Unit, with a dedicated storage device unit as a subunit

Plug-in units: - 1 CP710 Central Processing Unit - 2 MBIF-B Message Bus Interface - 1 PSC6-A Power Supply for Cartridge

Optional: - 2 SECMO-A Security Module (If the SECMO unit(s) are used in the ACUs, the DBDU functional units must also be equipped with a SECMO.)

Cartridge: - CC3C-A 1/3-shelf cartridge, cPCI

Cabinet: - HLRC Home Location Register Cabinet

Interfaces: - Message Bus Interface - LAN/Ethernet (CP710 standard feature) - Small Computer Systems Interface (SCSI; CP710 standard feature)



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1 2 4 63 8 9 10

DBGRST

J7

J6

WORUNLFOL

TEAPDRAMSB

CPSISCSIETxERx

OPROPROPR

ON

OFF

PSC

6

SEC

MO

1

MB

IF 0

MB

IF 1

CPU

SEC

MO

0

Figure 3 Mechanical structure, ACU with two optional SECMO-A units in a CC3C-A cartridge

3.2 BDCU - Basic Data Communications Unit

Redundancy: None; redundancy of the OSI/LAN connection is achieved using OSI management. The HLRi always features two BDCUs.

Purpose: The BDCU contains all communication links to the O&M network (analogue and/or digital) and to the Billing Center. One BDCU can handle a maximum of five connections.

Type: Computer Unit with no subunits


Optional: - 15 AS7-A Pre-processor (digital X.25) and /or

- 15 AC25-A X.25 terminal (analog X.25) (five slots from slot 3 to 7 can be AC25-A and or AS7-A)


Cabinet: - HLGC Home Location Group Switch Cabinet



Interfaces: - Message Bus Interface - GSW - LAN/Ethernet (CP710 standard feature) - X.25 (analogue and digital; optional) - Physical interface: V.24, limited V.24, V.35, V.36, X.21

1 2 4 5 6 73 8 9 10

AP

DBGRST

J7

J6

WORUNLFOL

TEAPDRAMSB

CPSISCSIETxERx

OPR OPROPROPR

APAP

OPR

ON

OFF

PSC

6

AS7/

AC

25 3

MB

IF 0

MB

IF 1

CPU

AS7/

AC

25 4

AS7/

AC

25 2

AS7/

AC

25 1

AS7/

AC

25 0

Figure 4 Mechanical structure, BDCU in a CC3C-A cartridge

3.3 CMM - Central Memory and Marker

Redundancy: 2n, n=1

Purpose: The CMM handles the functions of two different functional entities, the Central Memory and the Marker.

The central memory handles the routing functions of the HLRi. It also contains all system configuration data and master copies of distributed files. In addition, it is responsible for the central functions of CCS7.

The Marker controls and supervises the GSW, hunts for free circuits and is responsible for establishing and releasing all connections. The Marker and the GSW make up a switchover entity, which is duplicated for 2n redundancy.



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Type: Computer Unit with GSW 512 as a subunit

Plug-in units: - 1 CP710 Central Processing Unit - 2 MBIF-B Message Bus Interface - 1 SWCOP-A Switch Control Processor - 1 PSC6-A Power Supply for Cartridge

- 1 ESB20 LAN switch



Interfaces: - Message Bus Interface - Switch Control Bus to GSW 512

- GSW

Figure 5 Mechanical structure, CMM in a CC3C-A cartridge

3.4 CLSU - Clock System Unit

Redundancy: 2n, n=1. The HLRi always features two independent CLSUs, which are placed in the same cartridge.

Purpose: Located in the HLGC, the CLSUs generate the clock signals necessary for synchronising the functions of the HLRi and transmit them further to the CLBUs in the other cabinets. When using hierarchical mode, each



unit is synchronised to up to four inputs (ETs), usually coming from the PSTN. The CLSUs also feed the timing signals to, and collect the wired alarms from the units in the HLGC and send them further to the OMU. One CLSU can handle the timing and alarm collection functions of up to 15 cartridges.

Type: Functional unit with no subunits

Plug-in units: - 2 CL2TG-S Clock and Tone Generator (One CL2TG- S plug-in unit contains one entire CLSU functional unit. The two independent CLSUs are placed in the same cartridge.)

Cartridge: - CLOC-A 1/6-shelf cartridges, non-cPCI


Interfaces: - Synchronisation input - Synchronisation output - External synchronisation input - Internal wired alarm interface to the OMU via the GSW

CLX

TG 1

0300

CLX

TG 0

Figure 6 Mechanical structure, two independent CLSUs in a CLOC-A cartridge



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3.5 CLBU - Clock and Alarm Buffer Unit

Redundancy: 2n

Purpose: The CLBUs distribute the clock signals generated by the CLSUs, located in the HLGCs, to the units in the HLRCs. They also collect the wired alarms from the units whose timing they handle, and transfer them further to the OMU. One CLBU can handle the timing and alarm collection functions of up to 15 cartridges.


Plug-in units: - 2 CLAB-S Clock and Alarm Buffer (One CLAB-S plug-in unit contains one entire CLBU.)

Cartridge: - CLAC-A 1/6-shelf cartridges, non-cPCI

Cabinet: - HLRC Home Location Group Switch Cabinet

Interfaces: - Synchronisation input from CLSU - Synchronisation output - External synchronisation input - Internal wired alarm interface

CLA

B 1

CLA

B 0

43

Figure 7 Mechanical structure, two independent CLBUs in a CLAC-A cartridge



3.6 CCSU - Common Channel Signalling Unit

Redundancy: n+1, n=232

Purpose: The CCSU handles CCS7 signalling between the HLR and the MSC. It also controls the PCM connections of the exchange and the ETs allocated to the BDCU.

Type: Computer unit with no subunits

Plug-in units: - 1 CP710 Central Processing Unit - 2 MBIF-B Message Bus Interface - 1 AS7-A (0) Pre-processor (ET control) It can control up to 64 external PCM lines. - 1 AS7-A (1) Pre-processor (CCS7 interface). One AS7-A PIU can handle 16 signalling links. - 1 PSC6-A Power Supply for Cartridge


Cabinet: - HLGC Home Location Group Switch Cabinet - HLRC Home Location Register Cabinet

Interfaces: - Message Bus Interface - GSW - LAPD - CCS7

OPR

ON

OFF

DBGRST

J7

J6

WORUNLFOL

TEAPDRAMSB

CPSISCSIETxERx

OPR OPR

AP AP

PSC

6

MBI

F 0

MBI

F 1

CPU

AS7

1

AS7

0

1 2 4 5 6 73

Figure 8 Mechanical structure, CCSU in a CC4C-A cartridge



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3.7 DBDU - Database Distributor Unit

Redundancy: 2n, n=1

Purpose: The main responsibility of the DBDU is to distribute HLR/AC subscriber related data to the correct unit (HLRU/ACU). This information can come from either the network or the administrative unit.

Type: Computer Unit, with a dedicated storage device unit as a subunit.


Optional: - 1/2 SECMO-A Security Module (If the SECMO unit is used in DBDUs, the ACU functional units must also be equipped with SECMO(s).)




1 2 4 63 8 9 10

DBGRST

J7

J6

WORUNLFOL

TEAPDRAMSB

CPSI

SCSIETxERx

OPROPROPR

ON

OFF

PSC

6

MBI

F 0

MBI

F 1

CPU

SEC

MO

Figure 9 Mechanical structure, DBDU in a CC3C-A cartridge



3.8 EMU - Equipment Main Unit

Redundancy: 2n, n=1. The HLRi contains one pair of EMUs.

Purpose: The EMU contains the main database of the EIRU. The key responsibilities of the EMU are EIR management and CEIR-EIR interface management.

Type: Computer Unit with a dedicated storage device unit as a subunit.





1 2 4 5 6 73

OPR

ON

OFF

DBGRST

J6

J7

WORUNLFOL

TEAPDRAMSB

CPSISCSIETxERx

OPR OPR

PSC

6

MBI

F 0

MBI

F 1

CPU

Figure 10 Mechanical structure, EMU in a CC4C-A cartridge



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3.9 EIRU - Equipment Identity Register Unit

Redundancy: n+1/L, max 7 EIRUs

Purpose: The EIRU performs the verification of equipment identities and provides the network operator with lists of suspicious, stolen or faulty mobile equipment.

Type: Computer Unit with no subunits




Interfaces: - Message Bus Interface - LAN/Ethernet (CP710 standard feature)

1 2 4 5 6 73

OPR

ON

OFF

DBGRST

J6

J7

WORUNLFOL

TEAPDRAMSB

CPSISCSIETxERx

OPR OPR

PSC

6

MBI

F 0

MBI

F 1

CPU

Figure 11 Mechanical structure, EIRU in a CC4C-A cartridge



3.10 ET - Exchange Terminal

Redundancy: none

Purpose: The ET performs the electrical synchronisation and adaptation of external PCM lines. The ET is able to do the HDB3 coding and decoding, insert the alarm bits in the outgoing direction and produce the PCM frame structure.

Type: Functional Unit with no sub-units

Plug-in units: - 18 ET2E-S Exchange Terminal with Euroconnectors (balanced E1 interface) - 18 ET2E-SC Exchange Terminal with coaxial connectors (unbalanced E1 interface) - 18 ET2A Exchange Terminal with RJ45 connectors (balanced T1 interface)

Cartridge: - ET5C-A 1/6-shelf cartridges, non-cPCI


Interfaces: - GSW - Control interface from the Signalling Unit (via the GSW) - PCM (E1/T1) - Synchronisation



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0 1 2 3

4 5 6 7

ET2A

/ E

/ E

-C

ET2A

/ E

/ E

-C

ET2A

/ E

/ E

-C

ET2A

/ E

/ E

-C

ET2A

/ E

/ E

-C

ET2A

/ E

/ E

-C

ET2A

/ E

/ E

-C

ET2A

/ E

/ E

-C

Figure 12 Mechanical structure, ET2 Exchange Terminal plug-in units in an ET5C-A cartridge

3.11 GSW 512 - Group Switch 512

Redundancy: 2n, n=1

Purpose: The GSW is the switching network of the HLRi. It is controlled by the CMM. Initially, the HLRi is provided with a GSW equipped for the capacity of 256*256 PCMs.

Type: Subunit of the CMM

Plug-in units: - 1 SWCSM-S Switch Control and Switching Memory - 4 SWSPS-S Switch Serial-Parallel-Serial Converter - 1 PSC1-A Power Supply for Cartridge

Cartridge: - SW1C-A 1/4-shelf cartridge, non-cPCI


Interfaces: - Switch control bus from the CMM - PCM (E1/T1)



Note When maximally equipped, one GSW functional unit consists of two SW1C-A cartridges, indexed as n-0 and n-1, where n is the number of the GSW unit (0 or 1).

1 2 3 4 5 6 7

SWC

SM

SWSP

S 0

SWSP

S 1

SWSP

S 3

SWSP

S 2

PSC

6

Figure 13 Mechanical structure, GSW 512 in an SW1C-A cartridge

3.12 HLRU - Home Location Register Unit

Redundancy: 2n, a maximum of 10 pairs of HLRUs, each with a capacity of 120,000 subscribers.

Purpose: The HLRU controls the home subscriber database (HOSTEL), which is used for creating and modifying subscriber data. The HLRU is also involved in call handling (HLR-inquiry).

Type: Computer Unit, with a dedicated storage device unit as a sub-unit.




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- 1 ESB20 LAN switch




Figure 14 Mechanical structure, HLRU in a CC4C-A cartridge

3.13 MB - Message Bus

Redundancy: 2n

Purpose: The MB is the physical connection between the computer units. The duplicated Message Bus has a transfer rate of 16 Mbyte/s. It is controlled by the message bus interface plug-in units (MBIF-B) located in every computer unit.




Plug-in units: - MBIF-B in every computer unit

Interfaces: - Computer units

3.14 OMU - Operation and Maintenance Unit

Redundancy: 2n, n=1

Purpose: The OMU handles all centralised supervision, alarm and recovery functions, and the connections towards the user interface (MMI-System). The entire system software and the event buffer for intermediate storing of alarms is stored in the OMU storage devices.

Type: Computer Unit, with a dedicated storage device unit as a sub-unit.

Plug-in units: - 1 CP710 Central Processing Unit - 2MBIF-B Message Bus Interface - 1 AS7-A Pre-processor (LAPD and synchronisation) - 1 HWAT-A Hardware Alarm Terminal - 1 SERO-A Serial Interface (One SERO-A can handle up to sixteen VDU or LPT interfaces (V.24/V.28). - 1 PSC1-S Power Supply for Cartridge



Interfaces: - Message Bus Interface - GSW - LAN/Ethernet (CP710 standard feature) - Small Computer Systems Interface (SCSI; CP710 standard feature) - Wired Alarm Interface - External Alarm Interface - Clock control channel - Serial Interface (VDU and LPT)



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1 2 4 5 6 73 8 9 10

DBGRST

J7

J6

WORUNLFOL

TEAPDRAMSB

CPSISCSIETxERx

OPROPR

AP

OPR

ON

OFF

SW0

SW1

RST

PSC

6

MB

IF 0

MB

IF 1

CPU

HW

AT 0

SER

O 1

AS7

0

Figure 15 Mechanical structure, OMU in a CC3C-A cartridge

3.15 PDFU - Power Distribution Fuse Unit

Redundancy: 2n

Purpose: The PDFU distributes the -48V/-60V power from the rectifier or batteries to the cartridges through the distribution cables. The PDFU also contains the fuses for these cables, along with alarm circuits for the incoming voltages and its own fuses.

Type: Functional unit with no sub-units

Plug-in units: - PDFU Power Distribution Fuse Unit


Cabinet: - upper part of all cabinets, each cabinet is equipped with two PDFUs

Interfaces: - Supply interfaces to cartridges and station rectifiers/batteries

- Wired alarm Interface



3.16 STU - Statistical Unit

Redundancy: 2n, n=1

Purpose: The statistical unit collects performance and measurement data from the network.

Type: Computer unit, with a storage device unit as a sub-unit





1 2 4 5 6 73

OPR

ON

OFF

DBGRST

J6

J7

WORUNLFOL

TEAPDRAMSB

CPSISCSIETxERx

OPR OPR

PSC

6

MBI

F 0

MBI

F 1

CPU

Figure 16 Mechanical structure, STU in a CC4C-A cartridge



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3.17 SD3C-A and SD4C-A - Storage device cartridges

Redundancy: 2n

Purpose: Those HLRi computer units that manage large databases are equipped with dedicated storage device units. The memory units feature hard disks, DAT drives and, optionally, floppy disk drives, and they are housed in separate storage device cartridges.

Type: Sub-unit to ACU, DBDU, EMU, HLRU, OMU or STU

Interfaces: - Small Computer Systems interface (SCSI)

3.17.1 SD4C-A Storage device cartridge

Purpose: The SD4C-A cartridges are the dedicated storage device units of the EMUs, HLRs, OMUs and STUs.

Plug-in units: - 1 HDU Hard Disk Unit - 1 CTU Cartridge Tape Unit OR

- 1 MO drive Magneto Optical drive - 1FDU Floppy Disk Unit (The Floppy Disk Unit is featured only in the first storage device unit allocated to the OMU (SD 0).) - 1 PSC4-S Power Supply for Cartridge

Cartridge: - SD4C-A 1/4-shelf cartridge, non-cPCI


DN98618755

TAPES

TATUS

USY

EJECT

CTUHDU FDUPSC4

1 2 3 4



Figure 17 Mechanical structure, Storage Device Unit equipment allocated to EMU, HLRU, OMU or STU, in an SD4C-A cartridge. Only the OMU memory unit SD 0 contains the Floppy Disk Unit

3.17.2 SD3C-A - Storage device cartridges

Purpose: The SD3C-A cartridges are the dedicated storage device units of the ACU- or DBDU-Pair.

Plug-in units: - 2 HDU Hard Disk Unit - 2 CTU Cartridge Tape Unit OR

- 1 MO drive Magneto Optical drive - 2 PSC4-S Power Supply for Cartridge

Cartridge: - SD3C-A 1/3-shelf cartridge, non-cPCI

Cabinet: - HLRC Home Location Register Cabinet TAP

ES

TATU

SU

SY

EJE

CT

TAPE

STA

TUS

US

Y

EJE

CT

HDU HDUCTU CTU

PSC4PSC4

Figure 18 Mechanical structure, equipment of a duplicated storage device unit allocated to ACU- or DBDU-Pair in an SD3C-A cartridge

LAN in HLR


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4 LAN in HLR Following figures show two different LANs inside HLRi. O&M LAN and Control LAN (or SIGTRAN).

Figure 19. O&M LAN



Figure 20. Control LAN

Various units are connected to pair of SWU units. SWU unit is ESB20 LAN switch. Which can be plug in unit of different units depending up on type of LAN and cabinets. E.g.

LAN in HLR


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ESB20 for O&M LAN are at

CMM-0 and CMM-1 in HLGC

HLRU0-0 and HLRU0-1 in HLRC1



ESB20 for Control LAN are at

STU0-0 and STU0-1 in HLRC0


HLRU6-0 and HLRU6-1 in HLRC4.

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02_HLR_AC_EIR_Architecture.pdf