1 The Importance of Being Earnest * Nitin Vaidya Illinois Center for Wireless Systems University of...
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1 The Importance of Being Earnest * Nitin Vaidya Illinois Center for Wireless Systems University of Illinois at Urbana- Champaign NSF Workshop, Reston, Virginia, August 27, 2007 * With apologies to Oscar Wilde
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Transcript of 1 The Importance of Being Earnest * Nitin Vaidya Illinois Center for Wireless Systems University of...
1
The Importance of Being Earnest *
Nitin Vaidya
Illinois Center for Wireless SystemsUniversity of Illinois at Urbana-Champaign
NSF Workshop, Reston, Virginia, August 27, 2007
* With apologies to Oscar Wilde
2
Session Agenda
Current status: where we are now
Future expectations on wireless networking and research challenges
Desired technology advances/breakthroughfrom the physical layer
New advances needed from theoretical perspective
3
Likely Outcomes
More funding
More theory
More practice
More cross-layer research
More targeted research programs
More of everything
4
Likely Outcomes
More funding
More theory
More practice
More cross-layer research
More targeted research programs
More of everything
5
The Vanishing Link
Diversity muddles the notion of a link
A
B
C
P
PB
f(PC)
PC
PD
A
B
D
C
B2
B1
B0
A
B
D
C
C2
C1
C0
CooperationSpatial
Channel[2005]
6
Where doesPhy/Link
layer end ?
Layers All The Way Down
What shouldor shouldn’t
it do ?
7
The Way Forward
Clearly, more attention to phy / theory desirable
“Cross-Layer” protocols… smarter everything
(antennas, radios, protocols, people)
8
Net-X
Multi-Channel
Mesh
Theory to
Practice
A
B
C
D
EF
Fixed
Switchable
Insights onprotocol design
Multi-channelprotocol
Channel Abstraction Module
IP Stack
InterfaceDevice Driver
User Applications
ARP
InterfaceDevice Driver
OS improvementsSoftware architecture
Capacitybounds
channels
capaci
ty
Net-Xtestbed
Linux CSL
9
The Way Forward
Clearly, more attention to phy / theory desirable
“Cross-Layer” protocols… smarter everything
(antennas, radios, protocols, people)
If we have known this for years,
why do protocols lag so far behind ?
10
What Do We Really Lack ?
Funding ?
Manpower ?
Theory ?
Probably none of the above
11
What Do We Really Lack ?
12
What Do We Really Lack ?
Meaningful contact between
Practice Networking
Theory Comm
Nitin H Vaidya
Creation of Adam - fresco in Sistine Chapel, by Michelangelo
13
One-Point AgendaFour
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Reduce the unknown unknowns
Increase phy content in CS/CE networking courses
– Awareness of phy necessary to ask better questions
– Phy community should help
Educate phy students about higher layer issues
1. Educate BetterOurselves & Next Generation
Nitin H Vaidya
Unknown unknowns -- Donald Rumsfeld
15
Resist temptation to create new networking programs
•Partitioning of resources creates false demand
– Remove existing partitionsPossible to encourage research without these
– Examples: NOSS, FIND?
Encourage projects with PIs spanning different communities (phy-networks)
– Actively monitor/encourage real cooperation
2. Fewer Research Programs
16
3. Fewer “Better” Conferences
Increase venues that encourage diversecommunity interactions(phy-networking , theory-applied)
•More Workshops, fewer “selective” conferences
•Co-located conferences
•Tutorials
Eliminate most (wireless) networking conferences
•Emulate Info Theory model ?
17
4. Greater Industry/User Feedback
What are the industry-perceived long-term challenges ?
What do they need from us ?
– Invite them to these workshops!
Not everything needs to be dictated by industry, but practical insights can benefit academic research
– Problem formulations constrained by reality
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Summary
Wireless networking is non-trivial
Better-trained people key to better solutions
Enable cross-layer researchand eliminate artificial boundaries,politics notwithstanding
Be earnest about the goals !
We don’t want to be discussing this again in 2 years …
