Unique Transmission Node Nokia MetroHub

Technical Overview

Freedom for network Freedom for network configurations and configurations and capacity additionscapacity additions

MetroHub - freedom for the operator

• Flexible capacity evolution

• Cost-optimized and reliable transmission network

• Access in an instant

• Unique transmission node for Nokia MetroSite Capacity Solution

All-in-one transmission node Nokia MetroHub

Interface typesfor media change / 19" RadioIndoor Unit

Cross Connecte.g. DN2

+

NokiaMetroHub

Outdoors cabinet withrectifiers and battery back-up

=+

From complexity To expansion freedom and cost efficiency

MetroHub with SDH/PDH Access

• Effective micro cellular cross connect and grooming configurations with MetroHopper

• Integrated transmission node for SDH/PDH backbones with FlexiHopper

• Interfacing with Nokia radios, indoor units and MetroSite components

• Gives access flexibility and protection capabilities at attractive price level

MetroHub Unique Features

• Exceptional installation freedom: indoors/outdoors, local/remote

• All configurations: loops, stars, chains

• Allows independent transmission configurations with long power back-up time

• Exceptionally compact format

• Attractive price/performance ratio

Examples of MetroHub in a GSM Network

BSC

n x E1

= BTS

= NokiaMetroHub

Upper layer loop

Nokia MetroHub in:• star• chain• loops as a slave• loops as a master of

several Nokia MetroHub transmission nodes

• loops as a master of several BTS’s

Flexible Capacity Evolution

• Flexible transmission capacity reserve

• Smooth capacity evolution• Instant network expansion

= MacroSite + MetroHub

= Protected (8-16 x 2M)= Unprotected (4 x 2M)

= MetroHub

= Leased line (1 x 2M)

= MetroSite Base Station Keep pace with capacity Keep pace with capacity to stay ahead of demandto stay ahead of demand

BSCsite

MetroHub for hot spots and loop protection

Nokia MetroHopperTM RadioNokia FlexiHopperTM Microwave RadioProtected loop with MetroHub &FlexiHopper

Nokia MetroSiteTM EDGE BTSNokia MetroSiteTM EDGE BTS

BSC

Nokia MetroHubTMNokia MetroHubTM

hot spot

Nokia UltraSiteTM EDGE BTSNokia UltraSiteTM EDGE BTS

Line Of Sight to the street canyons

hub

Macro BTS& hub

BTS

BTS

BTSBTS

hub

MetroSite BTS

MetroHub

ITN C2.2 topologies SDH ring, chain and p-to-p are supported

PDH dropping/branching is supported

MetroHub with FXC STM BSC site MetroSite with FC STMUltraSite with FXC STM BTS sites with E1 or Nokia Hopper radios

STM-1 ring

BSC site

PDH sites with wire line or Nokia Hopper connectionfrom the STM-1 ring !

Loop Protection Principle

Loop master

Transmission network

Pilot bits

Normal receive direction

Reverse receive direction = Loop slave

Pilot bits

Most efficient way to protect traffic!

Protects:• Payload• Synchronisation• Network management

• 8 kbit/s channel cross-connection capability• reduced transmission capacity need (typically -30...-70%)• flexibility for changes and media change

BTS

BTS

BTSBTS

BTS

MetroHub - Transmission Optimization

MetroHub Modular StructureTransmission units (1-5 pcs)• FXC STM-1• FXC Bridge• FXC RRI• FXC E1• FXC E1/T1• Unit Shields

Cover and mechanical chassis

Plug-in units• Power Interface Panel• 1 - 2 identical Power Supply Units• Power Unit Shield (if only one Power

Unit)• Fan Unit• Interface Unit• Optional Battery Back-up Unit

Power Interface Panel

Interface Unit

Chassis

Power Supply Unit

RedundantPower Supply Unit

Transmission Units

Fan Unit

OptionalBattery Backup Unit

MetroHub Dimensions

Dimensions

Height: 830 mmDepth: 210 mmWidth: 309 mm

Volume: 49 l

Weight:Chassis 8 kgwithout battery 28kgwith battery 41kg

MetroHub Cross connections & Granularities

Cross connection & interfacing capability:•Cross-connection bus capacity 56 x 2 Mbit/s with 8 kbit/s granularity (non-blocking)•Max. interface capacity of the node 222 x 2 Mbit/s

Basic cross-connection types & granularities:•B2 Bi-directional 2M / nx64k / 64k / 32k /16k / 8k•M2 Bi-directional masked 64k•D Uni-directional fixed 64k / 32k / 16k / 8k

Protected cross-connection type(s) & granularity:•P2 Protected bi-directional nx64k / 64k / 32k/16k

MetroHub Features Overview 1/2

• Support for up to 10 Nokia FlexiHopper or MetroHopper radios or 20 E1/T1 connections or a mixture of any various topologies

• 56 x 2 Mbit/s non-blocking PDH cross connection bus with 8kbit/s granularity

• Outdoor and indoor, vertical and horizontal installation on wall, roof top, pole for flexible and easy network implementation

• Compatible with Nokia’s GSM PDH transmission equipment (also in loop networks) to secure earlier investments

MetroHub Features Overview 2/2Power System

• AC / DC dual input (85…276VAC / -48…-60VDC )• Maximum input power is 750VA or 500W• Redundant outputs and functions• Battery testing, heating and charging control

Battery System• 10 years design float lifetime at 25oC (5 years @ 35oC)• 48V / 8 Ah capacity

Typical Battery Back-Up times of some configurations:

BatteryBack-Up

RedundantPowerSupplyConfigurations: +25oC -10oC -40oC

5 x FXC E1 380 300 95 6 x MetroHopper 170 130 70 2 x STM-1 490 360 130

FXC STM-1 & FXC Bridge Transmission Units

General:• 2 x optical STM-1 interfaces• SDH cross-connect capability on VC-12 level (non-blocking)• PDH cross-connect capability on 8k level (non-blocking)• Both chain and ring• S12 SNC protection at VC 12 level, single ended, non revertive supported• Max 20 x 2Mbit/s add/drop capacity• Asynchronous and byte synchronous VC-12 mapping modes• FXC STM-1 and FXC Bridge are always used togetherInterface:• Optical LC connector• L1.1 Long Haul (1310nm)• G.826

FXC E1/T1 & FXC E1 Transmission UnitsGeneral:

• 4 interfaces per unit• Each interface configurable as E1 or T1• Free interface can be used for measurements and external

synchronization

E1- interface:• G.703, G.704 (20dB)• FXC E1 with 75 Ω

interface (BT43 connector, asymmetric)

• FXC E1/T1 with 120 Ω

interface (TQ connector, symmetric)

T1- interface:• ANSI T1.403 NI• ANSI T1.102 DSX• 100 Ω

interface (TQ connector, symmetric)

FXC RRI Transmission Unit

General:• For connecting to the outdoor units of the Nokia FlexiHopper and

MetroHopper or to another radio indoor unit• Two Flexbus interfaces per card• Operating mode: Single use supported

Interface:• The capacity of Flexbus interface is software-selectable between 2

x 2, 4 x 2, 8 x 2 and 16 x 2 Mbit/s• With Nokia MetroHopper outdoor unit, the capacity always 4 x 2

Mbit/s • Distance to radio outdoor unit up to 300m• Power feed to radio via Flexbus cable• Connector type TNC, impedance 50 Ω

FXC RRI

Traffic By-Pass with FXC RRI

2M XC8k XC

XC Bus

8 x 216 x 2

8 x 2

8 x 216 x 2

Capacity which is not dropped to the cross-connection bus

can be by-passed at 2Mbit/s level

Site applications

MetroHub

EM

PTY

FXC

Brid

geD

IUA

CS10/MSB TS

FXC

STM

empt

y

empt

yVIF

FXC

RR

I2

x Fl

exBu

sem

pty

FXC

E1/

T14

x 2M

3 x 2M D-Bus chaining

CS100/US BTS

FXC

STM

FXC

Brid

ge

empt

y

Internal D-buses(up to 3x2M)

FXC

E1/

T14

x E1

FXC

RR

I2

x Fl

exBu

s

BTS site solutionBSC site solution

MetroHub

EM

PTY

FXC

Brid

geD

IUA

FXC

STM

empt

yFX

C R

RI

2 x

Flex

Bus

empt

yFX

C E

1/T1

4 x

2M

BS C

FIU 19EMax 20 * E1(FXC E1+ FXC RRI+ FIU 19)

Max 12 * E1(3* FXC E1)

or

*) US/MS BTS will support SDH units with CX(M) 4.1 release

*)

*)

HSB Traffic protection with FXC RRI

RRIE1/T1

E1/T1E1/T1E1/T1

Hot Stand-By provides protection against equipment faults

• Basic HSB traffic protection:• 1IU (FXC RRI) + 2OU (Nokia Hopper)

• One active transmitter• “Dual Receiver" principle• Both receivers are active• The better of the two frames is selected• Transmitter switching time typically < 500ms• One frame (of both of the 2M signals) is buffered• Can enhance BER as much as 1-2 decades

MetroHub C2.2 new features with ITN C2.2

• Cost effective integrated PDH/SDH conversion• Integrated PDH-signal add/dropping (ADM)• Possibility to use MetroHub as a head-end SDH node at BSC-sites• Efficient use of 2M-connections with Nokia Optical Abis• Wire line/SDH/Wire line conversions become plug-and-play • Radio/SDH/Radio conversions become plug-and-play

• Value• Less equipment – direct cost savings• Better reliability – less maintenance• Simplified site configurations - easier planning, site hunting and

implementation

MetroHub Node Management

• One manager for cross-connect, interfaces, radios and cabinet

• Commissioning wizard• PC-based MetroHub Manager• User-friendly cross-connection

view• Remote management via NMS• Local management access

possible without disturbing the NMS and without any additional hardware

• Node configurations and cross connections off-line

• Local SW download without traffic interruption and slow speed remote SW download

MetroHub Operational Environment

• Temperature range –40 to +50°C

• Solar radiation 1120 W/m 2

• IP 55 (water and dust)

• No air conditioner or heat exchanger required

MetroHub Benefits

Planning • Easy site hunting and acquisition • Compact design and blending into the city environment, new site

locations• Network planning: one device - virtually unlimited configurations

Implementation• Installation outdoors or indoors; vertically or horizontally; wall,

roof top or pole; no floor space occupied• Only electricity and grounding needed• Highly compact• Light weight

Operations and maintenance• Minimized operation such as site rental cost and transmission costs via

high trunking efficiency• Low maintenance costs due to compact design

MetroHub Summary• Unique and independent

transmission node for indoor/outdoor and remote/local configurations: loops, stars, chains

• Highly compact all-in-one node: cross connect and media change in outdoor housing with optional power system redundancy and battery back-up

• Easy and fast network evolution with flexible capacity expansions and protection capability

• For Nokia UltraSite, MetroSite and Talk BTS environments