stephen brown

8/10/2019 Stephen Brown

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The advantages of Wi-Fi:

How Wi-Fi fits into the broadband

access options

Professor Stephen Brown

Wireless Broadband in Libraries

QEII Conference Centre London

26 January 2005


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To boldly go.

..exploring the wireless universe


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Access options

WAN LAN PAN

Wired ADSL Ethernet

Cable modem

Powerline

Wireless BFWA Wi-Fi IrDA

Satellite Bluetooth

Digital TV

Mobile telephony


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Access options

WAN LAN PAN

Wired ADSL Ethernet

Cable modem

Powerline


Satellite Bluetooth

Digital TV

Mobile telephony


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Access options

WAN LAN PAN

Wired ADSL Ethernet

Cable modem

Powerline


Satellite Bluetooth

Digital TV

Mobile telephony


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Nomad

Monitor

Collaborate

Text

Earth

universe


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Its education Jim.

but not as we know it.


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What you can do withbandwidth


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What bandwidth means

Download times for MSIE 5.01:

54Mb/s (802.11g) = 14.4 secs

11Mb/s (802.11.b) = 1 min 11 secs 2Mb/s (Digital TV) = 7.5 minutes

512kbits/s (Cable modem) = 25 minutes

256kbits/s (OECD minimum) = 51 minutes

56kbits/s modem = 3hr 50 min
http://www.transportarchive.org.uk/feedback/index.phphttp://www.transportarchive.org.uk/feedback/index.php


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2G

2G 3G

Bluetooth

WLAN

IrDA

wired

Broadband

Bandwidth vs mobility


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Some real world examples


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Wake Forest University

Identity Checking atParties

Medical Students AccessPatient Records while on

Hospital Rounds Physics Students Work in

Teams During LabSession

Language Students Workin Teams During Class

Email classmates duringclass

In-class quizzes

React/feedback during

class

Access relevant

websites/databases

during class

Create team

presentations


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SUNY Morrisville

Rewiring too

costly/dangerous

(asbestos)

Rewiring visuallyunacceptable

Wireless laptop

included in course

fees

Wider range of studytimes & locations

Roaming

Spontaneous groups


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Northumbria University library

Group work

Student culture

Student expectations

Study patterns

Increased capacity

Variety of learning

spaces

Wireless laptop loanservice (30)


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Ealing, Hammersmith & West

London College

Monitor student

attendance

Immediate and regular

feedback on attendance

and progress

Student nurse portfolio

building

Remote access to

resources on placement

Wireless tablet PCs given

to teaching staff

Wireless laptops given to

students

Bangor University


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Dewsbury, Bishop Burton &

Thomas Danby Colleges

Outreach centres

Workplace learning

Field data collection

Equality of access

Remote communityaccess

Wireless PDAs

PC equipped van

Satellite link via GPS

GLOSCAT SATVAN


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Birmingham University

Collaborative working

Whole campus wireless

Mobile units

Eliminate computer suites

Flexible seating

Community access

Wireless tablet PCs forstudents

Collaborative workingbetween learners andtheir tutors/facilitators

Notebooks passedbetween participants in amore informalatmosphere

Newarke & Sherwood College


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3 phases of the broadband journey

1) Adoption - taking the immediate benefit ofalways on and faster access.

2) Adaptation - taking advantage of new on lineservices, improving basic efficiencies without

fundamentally changing life styles or the way abusiness operates.

3) Absorption - the transformation phase, whenindividuals fundamentally change life styles and

businesses redesign themselves around theavailability of broadband.

Most users are still at the first or secondstages.


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Key differences

Volume and availability of information resources

New tools for management of information

New media for dialogue and sharing ideas

The different nature of interaction between

student and tutor

Changes in understanding of learning processes


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Implications

Teaching spaces

Real campus

On campus

Cohort learning spaces(lecture theatres/class

rooms)

Accessibility limited

Access & recruitmentlimited

Learning spaces

Virtual campus

Off campus

Individualised/collaborative learning

spaces

Accessibility widened

Access & recruitmentwidened


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Issues

Institutional strategies

Physical space vs virtual space technologies

interactive whiteboards

tablet PCs

IP videoconferencing

wireless

streaming

Single location vs roaming/mobile

Institutional vs student ownership

a la cart solutions?


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Acknowledgements

Tom Franklin: Franklin Consulting

Agnes Kukulska-Hume, Alison Nicholson,

Anne Jeffs: Open University

David Brown: Wake Forest University

Jean Bowland: SUNY Morrisville

Gilly Salmon: Leicester University JISC TechLearn


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[email protected]

http://kmd.dmu.ac.uk


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Collaborate

Group based

Spontaneous

Learners are free to study with

whomsoever they wish

Peer to peer

Virtual shared spaces

Flexible room arrangement

Presentation/collaboration devices


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Monitor

Individual tracking

Attendance monitoring

Context sensitive support Instant testing

Instant feedback


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Text

Instant messaging

Peer to peer

File sharing Presence


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Nomad

Cheap access devices, (wearable,

disposable)

Roaming: buildings, organisations

Study whenever, wherever

Non traditional spaces

Resources on demand Information on the move

Field data capture

Portfolio development


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Broadband

BSG Broadband Definition (2004):Always onaccess, at work, at home or on the

moveprovided by a range of fixed line, wirelessand satellite technologies to progressively higher

bandwidths capable of supporting genuinely newand innovative interactive content, applicationsand services and the delivery of enhancedpublic services.

As a starting point this would include higherbandwidth services (defined as >256 Kbit/sbythe OECD).

T h l I t Ch t


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Fixed Wireless LANs (802.11a and 16)

Networked video

streaming

M

oderate

High

Emerging / New MatureResearch

Low

Current State of the technology

Technology Impact Chart

4G phones

3G phones

EventualImpac

tonL&T

5 to 10 years

< 2 years

2 to 5 years

Key:Time to production

NowPublic Wireless LANs

802.11b

2-way satell ite

Broadband to home (ADSL & Cable networks)

IP Videocon ferenci ng

From survey

Other

Source

Digital TV

Typicalb d idth

Affectedb M lti l

Affectedb

Availability2003 2006

Cost:I t ll/

Significance


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bandwidth by Multipleusers

bydistance

2003-2006 Install/Running

PublicWLANs

11-54Mbit/sbi-directional

Yes Yes Low Not known Low

BFWA 512kbit/sdown256kbit/sup

Yes Yes Low 150/40 permonth

Medium

3G 144kbit/s-2Mbit/sbi-directional

No No Very low Not knownbutexpectedto be high

Low

ADSL 512kbit/sdown256kbit/sup

Yes Yes Medium tohigh

140/28 permonth

High

Cable 512kbit/s-1Mbit/sbi-

directional

Yes No Medium 40/25-33 permonth

High

Satellite 512kbit/sdown128kbit/sup

Yes Yes High 900/60 permonth

One-way:lowTwo-way:high

Digital TV 2Mbit/s

down

No No High 350/

10-37 permonth

Very low

Netw

orksc

ompared

stephen brown

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