BSC3i HW S105 Murugan

Nokia – STC Confidential1 © NOKIA DM Arrie Faisal 200403

BSC3i HardwareBSC3i Hardware


BSC3i Functional Units

PDFU 0PDFU-A

GSWB 0SW1C-C

CL

S 0

,1C

LOC

-B

GSWB 1SW1C-C

ET4C 0ET4C-B

(32*ET2E/A)

ET4C 1ET4C-B

(30*ET2E/A)

FTRB 0 FTRB 1

FTRB 2 FTRB 3

CPRJ45 CPGOCPGO

PDFU 1PDFU-A

PDFU 2PDFU-A

PDFU 3PDFU-A

Marker and CellularManagement Unit,

MCMU

Marker and CellularManagement Unit,

MCMU

BSC SignallingUnit, BCSU

BSC SignallingUnit, BCSU

Operations and Maintenance

Unit, OMU

Operations and Maintenance

Unit, OMU

OMUCM2C-A

BCSU 1CC3C-A

BCSU 0CC3C-A

BCSU 2CC3C-A

BCSU 4CC3C-A

BCSU 3CC3C-A

BCSU 5CC3C-A

BCSU 6CC3C-A

CC4C-ACC4C-AMCMU 1MCMU 0


• Mobile Pentium®III with 800 MHz frequency

• 256 MB SDRAM

BSC3i Processing Unit CP710-A, Pentium III Central Processing Unit


BSC3i Packet Control UnitPCU-B

• Two PCU functions are integrated in one plug-in unit; 2 microprocessor blocks are identical and work independently to handle the tasks


BSC3i Hard Disks

•Duplicated Hard disk units per BSC to ensure high reliability

•BSC3i is delivered with36G Hard Disks


BSC3i MO Unit

•Provides even better reliability and performance with longer media life cycle compared with Digital Audio Tape (DAT) technology.

•New BSC3i deliveries are configured with 9.1G MO units


BSC3i GSWB unit

• Is responsible for the submultiplexing functions of the BSC


BSC3i Clock Unit

Clock and Tone Generator (CL3TG) plug-in units

• Duplicated units are configured per BSC3i


BSC3i ET Units

• Provides the external PCM line connections for BSC

• BSC3i includes in maximum 62 ET2 units providing 124 external PCMs (E1/T1)


BSC3i Cabling to Environment• The external cables for the BSC3i

cabinet:• Trunk cables (E1/T1) from the ET2

plug-in units• Alarm cables from the CPRJ45

panel Ethernet (LAN) cable from the

CPRJ45 panel

• All other external cables are routed via the CPRJ45 Connector panel


BSC3i Site Solution• Fast installation and very easy expansion• Simplified cabling with compact one

cabinet design

EXAMPLE BSC3i REMOTE SITES:


Nokia NetAct Link Options•Digital X.25 interface, AS7-B

(PCM time-slot-based O & M interface via A Interface)– An O&M interface via transcoders and transmission

equipment– For network management interfaces in PCM time

slots•LAN (Ethernet) interface, via LAN connector

panel– LAN Ethernet interface for faster access– This is the default NetAct link interface– Connected via LAN connector panel on top of the

cabinet

• The LAN interface redundancy is implemented by providing a redundant LAN connection

• The digital X.25 interface can optionally be redundant by using duplicated units


BSC Peripheral Options

Visual Display Unit, VDU• A visual display unit is used as a user

interface at BSC site. By using a VDU terminal, the user can perform normal operational functions, using MML commands, and diagnostic tests on various units.

• Visual display units can be connected to the OMUin the same way as printers by using the interfaces that comply with the ITU-T Recommendation V.24.

• Present VDU type VT1010 is composed of four different units:

- Display 17" monitor,- Display Controller,- Keyboard, standard 105,- Cables from the BSC to the display

controller.


BSC Peripheral Options

Line Printer, LPT

External Alarm Unit, EXAU


BSC3i Configuration

BCSU BSC Signalling Unit including Packet Control Units

CLS Clock & Synchronization Unit

ET Exchange Terminal

GSWB Bit Group Switch

MCMU Marker and Cellular Management Unit

including IP Switch

OMU Operation & Maintenance Unit including System Disk and Magneto-Optical Drive

• Modular and scalable implementation• Small amount of different type of plug-in units• Extremely high availability• Smooth upgrades and extensions without services loss

MCMU

2N

MCMU

2N

CLS

CLS

GSWB

2N

GSWB

2NOMU& SDOMU& SD

BCSUN+1BCSUN+1

ETET ETET

BCSUN+1BCSUN+1

BCSUN+1BCSUN+1


Comparison between BSC2i and BSC3i

BSC configurations (S10.5) BSC2i BSC3i

Maximum radio network configuration 512 TRX 660 TRX

Maximum number of TCHs per BCSU 512 880

Maximum number of BHCA(Busy Hour Call Attemps) 91 000 117 000

Maximum number of logical PCUs per BSC (PCU-B implementation in BSC3i includes 2 x PCU)

8 + 1 8 (x2) + 1 (x2)

Support for IP interfaces

IP connectors in new deliveries + need for external

IP switching

Full support with inbuilt IP switching

Number of racks in maximum configuration 2 1

CPU type 266 / 500MHz 800MHz

External PCMs 112 124

Mass Memory Type Digital Audio Tape Magneto Optical Disk (standard

unit)

Weight ~ 400 kg ~ 350 kg


Fast to Assemble, Easy to Install

• Fast installation time on site and very easy expansion

Simplified cabling with compact one cabinet design

2000 mm

600 mm900 mm


BSC3i Power Supply

• The input voltage is between 41.5 V and 72 V. Because the range is wide, the main battery voltage of the BSC3i can be 48 V or 60 V. In both cases, it is possible to use a direct floating battery.

• The estimated power consumption of the BSCC cabinet with maximum equipment configuration is 1810 W.


BSC3i commissioning 1

1 BSC3i commissioning overview

2 Inspecting BSC3i hardware functioning

2.1 Peripheral units in BSC3i

3 Monitoring BSC3i start-up

3.1 Monitoring Unit start-up in BSC3i

4 Opening the first MML session in BSC3i

5 Verifying the BSC3i's SW version

6 Inspecting the BSC3i's I/O system

7 Monitoring start-up of MBIF in BSC3i


BSC3i commissioning overview 2

8 Inspecting the BSC3i's maintenance system

8.1 Testing the alarm system of BSC3i

8.1.1 Testing wired alarms

8.1.2 Testing external alarms

8.2 Testing the recovery from power breaks in BSC3i

8.2.1 Testing the recovery from complete power break in the system

8.2.2 Testing power break in PDFU

8.3 Testing state transitions and unit diagnostics in BSC3i

8.4 Testing the spare units of BSC3i


BSC3i commissioning overview 3

9 Checking the clock equipment in BSC3i

9.1 Checking the switchover of the clock synchronisation unit and the clock and alarm buffer in BSC3i

9.2 Inspecting the synchronisation unit in BSC3i

9.2.1 Simulating the synchronisation inputs

9.2.2 Inspecting the synchronisation unit with changeover

10 Checking the BSC3i's hardware configuration

11 Copying additional software and time zone setting in BSC3i

12 Install Changes Delivery, Multi vendor technical note

13 Preparation for integration


BSC3i Interface for Integration

A interface

Abis interface

Q3 interface (digital X.25 & LAN)

CBC interface (BSC-CBC)

Gb interface


BSC3i Overload Protection overview

1. BSC/BCSU/CPU protection against excessive number of paging messages coming from the A interface.

2. BSC/BCSU/CPU general protection

3. BSC BCSU CPU Overload against high RACH load provides also protection for BSC/MCMU/CPU

4. AS7 LAPD Protection

5. GSM-specified overload protection implemented by Nokia

6. Paging message overflow at BTS

7. Access Grant Message overflow at BTS

8. BSC/BCSU protection against excessive number of paging messages coming from the Gb interface.

9. BSC/BCSU protection against high PS RACH load.

Date post:	18-Apr-2015
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BSC3i HW S105 Murugan

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