Atdi Last Mile Fiji Workshop 25-26-07-05 Web

8/2/2019 Atdi Last Mile Fiji Workshop 25-26-07-05 Web

1/20

Radio-planning as an answerto the last-mile technological and financial issues

Solutions in Radiocommunications

PITA

Service Quality

&

Operationnal

Workshop

25-29 July 2005


2/20

Agenda

Who we are?

Last Mile in context: yesterdays experience as a help totodays needs

What technology to choose?

Wireless last-mile radio-planning

Whats next?


3/20

Last mile in context

Use of the radiowave propagation in order to connect the subscriber atthe last mile of the network : wireless starts when the copper ends !

Cheaper than cable,

Easy to deploy and undeploy

High bit rates (several Mbit/s persubscriber/CPE),

Frequencies used : 2.4 to 40

GigaHz, and lower (from LOS tonLOS solution)

Associated services : VoIP,

broadband internet, multimedia


4/20


Many technologies for the same goal:

Microwave links WLL (LMDS)

W-MAN (WiFi, WiMAX, WiBRO, Flash-OFDM)

Mobile (3G)

Broadcast (DVB-H, T-DAB, Wi-TV)

Mesh networking

Different technical and commercial maturity UMTS already launched commercially,

Bit rate lower than initial expectations

LMDS faced a major crisis in Europe andNorthern America in the years 2000

FWA-type of WiMAX has just been certified

Studies and tests for DVB-H

MW links requires expensive deployment costs

WiFi is very sensible to interference and distance limited


5/20


Many questions, few certainty Everybody agrees on the fact that content convergence is

the key for future applications

Ideally, the use of one or another technology should betransparent for the customer

Different actors profile, different expectations

Established operators:

- complement to white areas where DSL is not already available

(rural areas)

- wireless alternative to DSL to face the increasing Bit Rate demand

for Residential and SoHo areas

Alternative operators:

- offering a wireless solution to the standard access to the

subscriber (optical fiber, cable, dedicated line, non-modifiableinstallation)


6/20

Last mile in context : Competing orcomplementing wireless technologies ?

What is the best technology?

Segmentation of the Market according to

customers precise expectation

According to the targeted market one technology or acombination of solutions will better fit the needs

Whatever the solutions, the technologies will co-exist

Building and proving a business case should rely onBuilding and proving a business case should rely on

deployment hypothesisdeployment hypothesis,, that can be fulfilledthat can be fulfilledby aby a

radioplanning tool suchradioplanning tool suchas ICSas ICStelecom nGtelecom nG


7/20

Cartography in 2D and 3D

ICS telecom-nGmanages 5 cartographic layers that arenecessary for the propagation calculation and display:

Digital elevationmodels

Raster Images

Clutter filesBuilding files

Vector files


8/20

Plannification of the last mileby digital simulation

Dimension the networkaccording to todays needsand tomorrows


9/20


Located the best positionsin order to place the BS


10/20


Plannify the parenting of each CPEto their BS, connection per

connection


11/20


Plannify the parenting of the CPEto their BS, connection per

connection


12/20


Plannify the parenting of the CPE to their BS,connection per connection


13/20

Plannification of the last mile by digitalsimulation

Simulate the coverage and theresulting interference areaof the network


14/20

Planning of the last mile by digital simulation:anticipating the business figure

Connectable subscribers

PMP

Mesh

30 %

100 %

80 %

50 %

5 10 20 50 100 200 500 1000 2000

Addition of a relaybetween nodes

Subscribers number

%con

nectedsubscribers

Range of revenue depending on

the distribution of the type of

customers


15/20

Last mile : whats next ? (1)

Adaptive modulation

Traffic demand per user: 30 Mbit/s

Connection possibilities due to adaptive modulation


16/20


Smart antennas


17/20


18/20


From the CPE placed on the rooftops or building sides

to Indoor CPEs


19/20


From a fixed service

to a nomadic service (withing the same cell)

to a mobile service (handling handover)

OFDM technology takes advantage of the canyon effect


20/20

Conclusion

Simulation can integrate a large amount of input informationSimulation can integrate a large amount of input information(environment, context, users(environment, context, users profiles, technical parametersprofiles, technical parameters))

Possibility to play multiple scenarios, to compare equipmentsPossibility to play multiple scenarios, to compare equipments

(same or different technologies)(same or different technologies)

ICS telecomICS telecomnGnG

providing tangibleproviding tangible

elements for theelements for the

elaboration ofelaboration ofa reliablea reliable

business casebusiness case

Date post:	05-Apr-2018
Category:	Documents
Upload:	rahul-jain
View:	223 times
Download:	0 times

Atdi Last Mile Fiji Workshop 25-26-07-05 Web

Documents