Tài liệu Case Study - Tidel park - Built on strong fiber pdf

The Imposing Architecture of Tidel Park It has laid the fiber straight from the ground floor to the office unit.. Escalators connect a common area, with 19 large-capacity, high-speed Tid

How does one go about building what is

unarguably the largest single installation

in India with, literally, hundreds of fiber

connects as those in Tidel Park, Chennai

– an intimidat-ing network, and one of the most

colossal broadband infrastructures in India?

Traditionally, most architects have been using only

single-mode fiber for such applications Consider

VSNL The telecom giant has built its backbone on

the Tidel Park premises and used single-mode fiber,

without con-forming to ‘structured cabling practices’

The Imposing Architecture of Tidel Park

It has laid the fiber straight from the ground floor to the office unit

The Tidel Park authorities, however, insisted that KRONE, one of the world’s leading suppliers of telecommunications and data communica-tions system solutions, implement proper structured cabling practices This involved terminating the fiber at every floor level and adding components, like hori-zontal distribution boxes This ensures easier maintenance Also, it’s an EIA/TIA

s t a n d a r d - b a s e d solution The authorities have adopted and implemented all such standards, making it unique And this is the only one of its kind in India

One can imagine the daunting scale of operations and planning, and the concurrent implementation, besides the limitations imposed by the deadline for completion – a year! Obviously, connectivity has been the most criti-cal element in the blueprint Around 1,600 fiber connects – enormous by any industry standards!

But KRONE is well known for its fiber-optic systems that guarantee future-proof technology in

Tidel Park - Built on Strong Fiber

private networks Based on a

comprehensive product

portfolio for setting up

fiber-optic networks, these systems

combine maximum

transmission bandwidth with

a maximum range, and

without any loss of data

FEATURES OF TIDEL PARK

It’s a dream Park – not built

in a day! This 1.28-million

sq.ft built-up area has a

modular floor layout and a

wide-span column design to

match individual

requirements Small,

medium and large offices of

4,585-89,000 sq.ft in super

built-up areas occupy every

floor

A dedicated 110-kv

substation provides reliable

power supply and 10.5 MVA

DG sets are stacked up for

100 percent backup The Park

boasts the world’s

third-largest state-of-the art, TES

technology-based central

air-conditioning system and a

noise-proof, energy-efficient

offices with double-glazed

glass curtain walls

Automated building

management systems control

and manage air-conditioners,

lifts, access control systems

and all installed plant and

machinery Escalators

connect a common area, with

19 large-capacity, high-speed

Tidel Cable Riser - A For Tower - A

NORTH WING

RISER - A

TIDEL MODULE GROUND FLOOR

SM 12 PORT

MM 12 PORT

SM 12 PORT

MM 12 PORT

SM 12 PORT

MM 12 PORT

12TH FLOOR

11TH FLOOR 10TH FLOOR

NINTH FLOOR

EIGHTH FLOOR

SEVENTH FLOOR SIXTH FLOOR

FIFTH FLOOR

FOURTH FLOOR

THIRD FLOOR

SECOND FLOOR

SM 12 PORT

MM 12 PORT

SM MM

24 PORT WALL MOUNT

MULTIMEDIA OUTLET

SM INDORE OFFICE CABLE

24 CORE FIBRE OPTIC COMPOSITE CABLE

50 P

50 P

50 P

50 P

50 P

50 P

50 P

50 P

50 P

50 P

50 P

12TH FLOOR

11TH FLOOR

10TH FLOOR

NINTH FLOOR

EIGHTH FLOOR

SEVENTH FLOOR

SIXTH FLOOR

FIFTH FLOOR

FOURTH FLOOR

THIRD FLOOR

SECOND FLOOR

50 P

TIDEL ROOM

50 PAIR KRONE MDI

5 PAIR PCM CABLE

5 PAIR PCM CABLE

50 PAIR MDF

Tidel Cable Riser - A For Tower - A

elevators and heavy-duty service lifts for vertical

transportation

There is ample car parking space in the two

basements and on the surface Entry to the

high-security area is achived through a smart card, with

CCTV systems monitoring the Park 24x7

There are essential facilities, like a Business

Center, Convention Hall, Health Club, Swimming

Pool, Food Court, Restaurant, Guest Cottages, Travel

Desk, courier service and retail outlets

The main contractors for the project are Hyundai

Engineering & Construction Co., South Korea, and

sub-contractors are Larsen & Toubro Ltd, India (civil

engi-neering); nominated sub-contractors are ETA

Engineering, Dubai (ACMV); Kone, India ( vertical

transportation); BSES Co Ltd, India (electrical

generators)

The entire complex is maintained by a reputed

international agency

BASIC ARCHITECTURE

The aerial view of Tidel Park shows four 12-storey

towers – A, B, C and D Except tower B, which has

only two floors currently in use, all the others have

office units, sometimes upto three or four in number,

on all the 12 floors

KRONE provided Copper based connectivity, using

a PCM cable The second part of this is an

industry-standard, single-mode fiber for the communication

backbone Additionally, multimode fiber connectivity

has also been offered

THE CHALLENGES

The reason for this form of advanced connectivity?

Tidel Park wanted a fiber optic communication

backbone that could support a wide range of

applications – both data applications using

multi-mode and data & voice appli-cations using a

single-mode For a backbone riser, this might be an example

of an elaborate architecture

The Tidel Park authorities have their own reasons for providing both the technologies in the riser, one

of them being a 100-year-term plan

In the clinical architecture, the entire planning cen-tered on how to manage the connectorization process smoothly to ensure that the quality of connectorization is good

The entire network design had KRONE Chennai DataCom, a KRONE-authorized system integrator,

as the agency maintaining the site for five years (as per the contract) after the project was completed

Exposed Cables

Normally, if standard practices are not followed, there is a fear of cables being exposed KRONE insisted on running ducts, which were laid out for kilometers on end in the building The cable was laid out through the ducts At every floor level, a junction box was placed for the cable to be tied This was because a vertical riser cannot be wrapped up for considerable lengths

What was to be worked out was how many termina-tions, Copper or fiber, per office per unit had to be main-tained The STPI and Tidel Park authorities decided that each office unit should have 5 Copper terminations, with one pair of single-mode and multi-mode fiber running, as is usually the case in India Future requirements had to be kept in mind while laying the fiber, which is being used primarily for inter office communications

DUAL BACKBONE

The service providers are primarily using copper The Park has two separate backbones, so that the occupants can avail of the services of two providers The Tidel Park authorities had decided early on to build parallel backbones to facilitate an alternate service provider to reach each customer module

of silica glass, or plastic They comprise a light-guiding core with a refractive index n

k – which is covered by a glass cladding with a lower refractive index nm There are three different types of optical fiber

Step Index Multi-Mode Fiber

The core diameters of multimode (MM) optical fiber with a step profile

range from 100 to

200 mm The refractive index profile features a constant refractive index n

k at the core and a sharp decline

at the interface with the cladding, with the refractive index

nk Several hundred light waves (modes) with different distribution patterns and con-siderable differences in propagation times are transmit-ted Use: Short-range applications of upto

1 km.; Typical Values: Wavelengths – 850 mm and data rates of upto 10 Mbit/s

Graded Index Multi-Mode Fiber

Graded index fibers have the core glasses so formed that the index of the glass becomes lower towards the outer surface of the fiber This leads to slight time differences in the transmission speeds of the

various modes Low cost LEDs can be used to launch the light The core diameter totals 50

or 62.5 mm in most cables

The 50 mm fiber features a larger

Providing connectivity options for the backbones

was-n’t difficult for KRONE as they manufacture and

designs optical cables and connectivity products

spe-cializing in the “last mile” between network operators

and customers

KRONE has laid a 24-core composite fiber-optic

cable, comprising 12-core single-mode (9/125

microns) fibers and 12-core multi-mode (62.5/125

microns) from the Tidel Park Data Center to each

(occupant) floor on the backbone risers The

composite fiber riser cable is a loose tube design and

an LSZH-type

The riser ends at the Tidel Park Data Center on a

24 port 19” rack-mountable fiber distribution box

that can accommodate both single-mode and

multi-mode cou-plers The riser at the other end is

terminated at each floor on a wall-mount fiber

distribution box

From the wall-mount fiber distribution box, each

occupant is connected by a two-core zip-cord-type

duplex LSZH multi-mode and single-mode horizontal

fiber cable, which, in the horizontal, has been

terminated on a faceplate at the customer module

that can accommodate modular SC adapters for

single-mode, as well as multi-mode

SC couplers are used in the faceplates for the fiber

cable termination

The best thing about the entire solution is that Krone has installed low-smoke zero-halogen (LSZH) cable that is fire-retardant, both in the riser and in the horizontal

THE BASIC TECHNOLOGY

Optical fibers are di-electric light waveguides made

Single Mode Fibers

f 125 m m

f 10 m m

n m n x = const.

n r

Graded Index Multi-Mode Fiber

Core

Cladding

f 50 m m

f 125 m m

n m = const Fibre cross section

n k = n(r) n

r Index profile

Step Index Multi-Mode Fiber

Core

Cladding

f 200 m m

f 230 m m

Cladding nm nk= const.

Fibre cross section

n Index profile

product of bandwidth and

length (BXL) and lower

attenuation The smaller

diameter of this fiber,

however, also means a

reduced light power in

comparison with the 62.5

mm fiber, so that the

attenuation margin is less

favorable Applications:

In-house cabling, with ranges

of up to 4 km.; Typical

Values: Wavelengths – 850 mm and 1,310 mm and

data rates of up to 100Mbit/s

Single-Mode Fiber

Single-mode optical fibers have a core diameter of

10 mm, permitting the propagation of just one light

wave This eliminates the problem of differences in

propagation times of different modes Launching of

the light requires high-quality optical laser diodes

Single-mode optical fibers, hence, feature the highest

transmission capacity of all types of fiber

Applications: Long-range transmission, with

ranges of upto 50 km without repeaters Typical

Val-ues: Wavelengths – 1,310 mm and 1,550 mm and data

rates of upto 2.4 Gbit/s

ADVANTAGES OF OPTICAL FIBERS

n Fiber-optic networks have very low attenuation,

so that long transmission distances are possible

without signal conditioning

n Optical fibers offer a large transmission

bandwidth, so that large amounts of data can be

transmitted at high rates

n Glass, as a material, is immune to

electro-magnetic interference, so that fiber-optic cables

can be laid parallel to power cables without any

mutual interference Optical fibers can be used

without any risk in areas with an explosion

hazard

n Glass does not conduct electricity So, the transmitting and receiving equipment is galvanically isolated within a fiber optic network

n Fiber optic networks provide a high degree of pro-tection against eaves-dropping

n Their light-weight, small dimensions and high transmission capacity help save installation space

Fiber-Optic Transmission Route

Transmission components may vary greatly, depending upon the user’s requirements for the configuration of his network The pure fiber optic connection and distribution components between the active components, however, must meet very similar requirements at all fields of applications

Optical communications are based on light, rather than electricity as the information carrier, and on optical fibers, instead of copper wires as the transmission medium

The light is generated, and processed, by the active components (Transmitter and Receiver) and transmitted through the optical fiber Connections

of optical fiber and fiber-optic cables pose special requirements for positioning precision and processing

Fiber Optic Transmission Route

Us

Modu lar

e o

Connector Splice

Coupler

Receiver

e o

Amplifier

Receiver

e o

Amplifier Us

Optical fibers are made of silica glass, so it is not

pos-sible to solder individual fiber segments to each

other, or to connect them using insulation

displacement techniques Special processes have,

hence, been developed for joining fiber segments

together, either temporarily or permanently

Fiber-optic connectors are used for non-permanent

connections of optical fibers A large number of

different connector systems exists worldwide, with

differences in terms of operating principles and

applications

Positioning, precision and manufacturing

tolerances, however, have to fulfill extremely

demanding requirements in each case Permanent

connections are established by means of thermal, or

mechanical, splices When laying fiber-optic cables,

it may be ensured that suitable splice support devices

are available These devices can be contained in

junctions, or in racks, where the fiber-optic cables

are stored, or distributed from

These distributors are available in many different

versions It depends on the number of fibers to be

managed and the place of use Other components

are couplers and wavelength multiplexers Both

devices help optimize network structures by saving

active components and/or fiber-optic cables, while,

at the same time, ensuring a higher transmission

capacity

The following is an interview with Mr Rajasekar,

MD, Chennai Datacom, a ‘total IT and

Communications Solutions’ company Rajasekar,

MD, Chennai Datacom, a ‘total IT and

coomunications Solution’s company

The company’s core areas of operation cover

network-ing, which includes Structured Cabling (for

copper and fiber), Local Area Networking (LAN),

WAN solutions, VOIP and Voice over Frame Relay

(VoFR) solutions

The company is one of the leading System

Integrators of Chennai and one which connected Tidel Park KRONE has always worked through its System Integrators When the Tidel Park authorities approached KRONE, they forwarded the request to Chennai Datacom, who executed the complete project

What’s so unique about Tidel Park?

Tidel Park is the first one of its kind where the authorities have provided a backbone for the occupants It’s also, possibly, the first site in India where an attempt has been made to adhere to cabling standards It’s a certified site and will prove to be a benchmark for similar installations in India There was a unique requirement at Tidel Park in the sense that it was a composite fiber requirement for the riser, 12-core single-mode and 12-core multi-mode This isn’t normal It’s a completely new and different kind of application

What was the biggest challenge you faced?

According to the contract, we’re supposed to maintain the site for five years Normally, if standards aren’t followed, the cables are exposed

So, we insisted that the Tidel Park authorities implement ducting The ducts that were laid out in the building ran into kilometres

This was a critical element in the network implemen-tation, since the decision to provide its own backbone was taken halfway through the project and construction had already begun

However, we managed to do the ducting and have the fiber laid

VISION ON TIDEL PARK

Mr D.S Nagendra, Technical Manager, Premises Cabling, KRONE Communications Limited, speaking on the vision that went behind building the Tidel Park architecture and its speciality, says

“The Tidel Park project is special for various reasons.

The network design had many features that

distin-guished it from other similar projects The backbone

was a composite fiber cable with 12 cores of

single-mode and 12 cores of multisingle-mode on the vertical and

a duplex SM and MM on the horizontal

“The number of connectrations was nearly 1,600

This was a complex task, involving a high degree of

skill and accuracy on the part of the installer and

excellent quality of connectors This was possible due

to the high degree of skill of Chennai Datacom and

the timely support of KRONE’s regional distributor,

Industrial Enterprises

KRONE worldwide is known for its copper

connectivity, but how about fiber? Says

Mr Nagendra, “KRONE internationally has executed

major fiber turnkey proj-ects

For instance, KRONE has executed a turnkey fiber

job in association with Deutsche Telecom for the

OPAL project

There, we’ve connected 50,000 subscribers on

fiber-to-the home (F2H) KRONE has all the

exper-tise in planning and execution of fiber installation

With the acquisition of KRONE by GenTek Inc.,

our focus and strength on fiber has increased

GenTek has fiber-optic cable manufacturing plants

in the US, and this gives us a ready supply source

Questioned on how KRONE provided fiber

connec-tivity to the occupants, Mr Nagendra replies, “The

vertical fiber cable is terminated on each floor The

horizontal fiber cable starts from the floor

distribu-tor and terminates at the customer’s module

The terminations are made on multimedia outlets

These outlets accept both single-mode and

multi-mode fiber cables and can accommodate RJ45

commissioning,KRONE supplies connectivity

solutions and products for copper and fiber-optic networks

By integrating data cables, optical systems and diagnostic systems and services, KRONE is expand-ing its extensive product portfolio even further This approach and optimum involvement in DSL rollout,

as well as new UMTS solutions, will consolidate the company’s leading market position as a manufac-turer and supplier

Besides setting global standards for decades with connectivity systems for existing applications and future communication infrastructures, KRONE is focussing on innovations that combine unsurpassed product performance with new benefits, while also developing solutions for optimum network safety products for line distribution points that warrant upgrading and streamlining of existing networks to enhance the company’s full range of distribution systems, rounded off by flexible and application-oriented network interfaces

With TrueNet, KRONE also supplies a new struc-tured cabling system that, for the first time ever, is based not just on transmission rates, but also on optimum data throughput and guarantees a zero-error rate KRONE’s partner company, Vigilant, concentrates on diagnostics systems and supports the warranty for its TrueNet solu-tions

The company has 24 subsidiaries and more than

80 distribution partners, representing the KRONE group in around 140 countries throughout the world KRONE and its staff of 3,300 recorded sales of $389 million, with

international markets accounting for 81 per cent

of this figure

Krone is also engaged in providing structured cabling solutions for data networking applications, meeting and exceeding ISO/IEC standards n