Tools for
the Analysis and
Design of Complex
Multi-Scale Networks:
Overview
"
•
MURI Annual Review
Berkeley, October 27, 2011
"
•
J. Walrand, PI
"
1. Team
"
•
Venkat Anantharam
, UCB
•
John Doyle
,
Caltech
•
Weibo Gong
, UMASS
•
Steven Low
, Caltech
•
R. Srikant
, UIUC
•
Don Towsley
, UMASS
•
Jean Walrand
, UCB
•
Avideh Zakhor
, UCB
•
14 PhD Students, 7 Postdocs
2. Scientific Objectives and Technical Approach
"
High Throughput
Low Delay
Security & Reliability
GOALS of PROPOSED WORK:
Improve Understanding of Multi-Scale Features of Networks
Use that Understanding to Develop Better Protocols
2. Scientific Objectives and Technical Approach
"
High Throughput
Low Delay
Security
Reliability
Protocols
Methodology for LRD and Performance Evaluation
3. Scientific Issues
"
Local Information - Global Impact
Multiple Time Scales
Uncertainty
4. Scientific Accomplishments
"
High Throughput
Low Delay
Security
Reliability
Protocols
Methodology for LRD and Performance Evaluation
4. Scientific Accomplishments
"
High Throughput
Low Delay
Security
Reliability
Protocols
Methodology for LRD and Performance Evaluation
Game: Attack/Defense
Network Sharing Bound
Power Laws in Network Analysis
4. Scientific Accomplishments
"
High Throughput
Low Delay
Security
Reliability
Protocols
Methodology for LRD and Performance Evaluation
Game: Attack/Defense
Network Sharing Bound
Power Laws in Network Analysis
Fat tails, hard limits, thin layers
Access Delay in IEEE 802.11
Stability of a P2P Protocol
Target Tracking with In-Network Aggregation
Connection-Level Scheduling
4. Scientific Accomplishments
"
High Throughput
Low Delay
Security
Reliability
Access Delay in IEEE 802.11
Stability of a P2P Protocol
Target Tracking with In-Network Aggregation
Connection-Level Scheduling
E
ff
ect of Bu
ff
ers on Stability
Network Sharing Bound
Power Laws in Network Analysis
Fat tails, hard limits, thin layers
4. Scientific Accomplishments
"
High Throughput
Low Delay
Security
Reliability
Access Delay in IEEE 802.11
Stability of a P2P Protocol
Connection-Level Scheduling
E
ff
ect of Bu
ff
ers on Stability
Network Sharing Bound
Power Laws in Network Analysis
Fat tails, hard limits, thin layers
Cost of Network Security
Goal:
Understand Capacity w. Network Coding
Approach:
o
Unicast and multicast well-understood
o
What about multiple unicast?
4. Scientific Accomplishments
"
High Throughput
Low Delay
Security
Reliability
Access Delay in IEEE 802.11
Stability of a P2P Protocol
Connection-Level Scheduling
E
ff
ect of Bu
ff
ers on Stability
Network Sharing Bound
Power Laws in Network Analysis
Fat tails, hard limits, thin layers
Cost of Network Security
Goal:
Estimation of Distribution with HT
Approach:
o
Study distribution of flow sizes
o
Sampling central notes in large graphs
4. Scientific Accomplishments
"
High Throughput
Low Delay
Security
Reliability
Access Delay in IEEE 802.11
Stability of a P2P Protocol
Connection-Level Scheduling
E
ff
ect of Bu
ff
ers on Stability
Network Sharing Bound
Power Laws in Network Analysis
Fat tails, hard limits, thin layers
Cost of Network Security
Goal:
Estimation with HT; Role of Layers
Approach:
o
Goodness of fit with HT;
o
Hard limits;
o
Essentials of layered architecture.
4. Scientific Accomplishments
"
High Throughput/ Low Energy
Low Delay
Security
Reliability
Network Sharing Bound
Power Laws in Network Analysis
Fat tails, hard limits, thin layers
Cost of Network Security
Goals:
Access delay distribution; CW adaptation
Approach:
o
Distributed estimation of access delays
o
CW adaptation based on collision parameters,
not recent collision history.
Presentation by Avideh Zakhor
Access Delay in IEEE 802.11
Stability of a P2P Protocol
Target Tracking with In-Network Aggregation
Connection-Level Scheduling
4. Scientific Accomplishments
"
High Throughput/ Low Energy
Low Delay
Security
Reliability
Network Sharing Bound
Power Laws in Network Analysis
Fat tails, hard limits, thin layers
Cost of Network Security
Goal:
Stable distributed P2P protocol
Approach:
o
Avoid “rare chunk problem” by sampling.
Presentation by Barlas Oguz
Access Delay in IEEE 802.11
Stability of a P2P Protocol
Target Tracking with In-Network Aggregation
Connection-Level Scheduling
4. Scientific Accomplishments
"
High Throughput/ Low Energy
Low Delay
Security
Reliability
Network Sharing Bound
Power Laws in Network Analysis
Fat tails, hard limits, thin layers
Cost of Network Security
Access Delay in IEEE 802.11
Stability of a P2P Protocol
Target Tracking with In-Network Aggregation
Connection-Level Scheduling
E
ff
ect of Bu
ff
ers on Stability
Goal:
Reduce variance of target location estimate
Approach:
o
Aggregate information in network.
4. Scientific Accomplishments
"
High Throughput/ Low Energy
Low Delay
Security
Reliability
Network Sharing Bound
Power Laws in Network Analysis
Fat tails, hard limits, thin layers
Cost of Network Security
Access Delay in IEEE 802.11
Stability of a P2P Protocol
Target Tracking with In-Network Aggregation
Connection-Level Scheduling
E
ff
ect of Bu
ff
ers on Stability
Goal:
Stability when connections come and go.
Approach:
o
MWM with suitable f(Q
MAC
).
4. Scientific Accomplishments
"
High Throughput/ Low Energy
Low Delay
Security
Reliability
Network Sharing Bound
Power Laws in Network Analysis
Fat tails, hard limits, thin layers
Cost of Network Security
Access Delay in IEEE 802.11
Stability of a P2P Protocol
Target Tracking with In-Network Aggregation
Connection-Level Scheduling
E
ff
ect of Bu
ff
ers on Stability
Goal:
Understand stability of TCP with large bu
ff
ers.
Approach:
o
Understand conditions when TCP remains stable
4. Scientific Accomplishments
"
High Throughput
Low Delay
Security
Reliability
Access Delay and CW Adaptation in IEEE 802.11
Stability of a P2P Protocol
Connection-Level Scheduling
E
ff
ect of Bu
ff
ers on Stability
Network Sharing Bound
Power Laws in Network Analysis
Fat tails, hard limits, thin layers
Cost of Network Security
Goal:
Impact of connectivity value on network design.
Approach:
o
Define value of network and cost of connectivity loss.
o
Study NE of strategic attack vs. proactive defense.
5. Group Synergy
"
Collaboration UIUC - UCB
Delays in Adaptive CSMA Protocol
Collaboration UIUC - UMASS
Ying – Srikant - Towlsey
Collaboration UMASS - CALTECH
File Partitioning Algorithms
Collaboration UCB – CALTECH
Libin Jiang (UCB PhD) joined Caltech (as postdoc)
Collaboration across projects
UMASS – Shroff: Mutlipath protocols and LRD
Jiang – Modiano: HT and Q-CSMA
Gueye – Baras: Security and Topologies
Continued collaboration across projects
Exploration of delay-based protocols
6. Future Plans
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1)
Analysis of delays and likelihood of delivery in wireless
networks;
2)
Design of network topologies for reliability and resiliency to
attacks;
3)
Improvements of WiFi protocols;
4)
Study of LRD of functionals of Markov chains;
5)
Development of secure wireless communication algorithms;
7. Original Goals
"
Improve Understanding of Multi-Scale Features of Networks
Control protocols that capture the e
ff
ect of bu
ff
ers;
Analysis of interaction of speed scaling and load balancing;
Optimization of consensus algorithm;
PCSDE models of heavy tails.
Using that Understanding to Develop Improved Protocols
Reduced-delay protocols for wireless networks;
Stable distributed peer-to-peer algorithms;
Stable multipath rate control algorithms;
WiFi protocols with carrier sense and packet length adaptation;
Geographical load balancing algorithms for renewables;
Design of robust scheduling algorithms for heavy-tails;
Algorithms for identifying important nodes in large networks;
Algorithms for maintaining secure wireless communications.
Today
ʼ
s Agenda
"
9.00 - 9.40
Barlas Oguz
(Berkeley)
Network Sharing Bound and
Stability of a P2P Protocol
9.40 - 10.20
Avideh Zakhor
(Berkeley)
Access Delay and CW Adaptation in
IEEE 802.11
10.20 - 10.40 Break
10.40 - 11.20
Assane Gueye
(NIST)
Cost of Network Security
11.20 - 12.00
Javed Ghaderi
(UIUC)
Connection-Level Scheduling
12.00 - 1.00 Lunch Break
1.00 - 1.40
Wei Wei
(UMASS)
Target Tracking with In-network
Aggregation
1.40 - 2.20
Bruno Ribeiro
(UMASS)
Power Laws in Network
Analysis
2.20 - 3.00
Somayeh Sojoudi (
Caltech)
E
ff
ect of bu
ff
ers on
stability of Internet congestion control
3.00 - 3.20 Break
3.20 - 4.00
John Doyle
(Caltech)
Fat tails, hard limits, thin layers
4.00 - 4.20
Feedback and Remarks from
Dr. Chang
Publications
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JOURNALS
Libin Jiang, Venkat Anantharam and Jean Walrand, ``How Bad are Selfish Investments in Network Security?",
IEEE/ACM Transactions on Networking, Vol. 19, No. 2,pp. 549 -560, April 2011."
Amin Aminzadeh Gohari and Venkat Anantharam, “Evaluation of Marton's Inner Bound for the General
Broadcast Channel”. To appear in IEEE Transactions on Information Theory."
Venkat Anantharam and Takis Konstantopoulos, ”Integral representation of Skorokhod reflection,” To appear in
Proceedings of the American Mathematical Society."
Lijun Chen, Na Li, Steven H. Low and John C. Doyle. “Two Market Models for Demand Response in Power
Networks,” IEEE SmartGridComm, 2010"
.J. J. Jaramillo, R. Srikant and L. Ying, Scheduling for Optimal Rate Allocation in Ad Hoc Networks with
Hetergeneous Delay Constraints, IEEE Journal on Selected Areas in Communications, May 2011."
J. J. Jaramillo and R. Srikant, Optimal scheduling for fair resource allocation in ad hoc networks with elastic
Publications
"
JOURNALS
J. Ni, R. Srikant and X. Wu. Coloring Spatial Point Processes with Applications to Peer Discovery in Large
Wireless Networks, IEEE/ACM Transactions on Networking, April 2011."
M. Leconte, J. Ni and R. Srikant, Improved Bounds on the Throughput Efficiency of Greedy Maximal Scheduling
in Wireless Networks, IEEE/ACM Transactions on Networking, June 2011."
Y. Cai, Patrick P. C. Lee, W. Gong, D. Towsley. “Analysis of Traffic Correlation Attacks on Router Queues,” J.
Computer Networks, 55(3), 734—747, February 2011."
B. Jiang, Y. Cai, D. Towsley. “On the Resource Utilization and Traffic Distribution of MultipathTransmission
Control”, to appear in Performance"
L. Ying, R. Srikant D. Towsley, “Cluster-Based Back-Pressure Routing Algorithm,” IEEE/ACM Trans. on
Networking, to appear. (Collaborative effort.)"
B. Jiang, R. Brockett, W. Gong, D. Towsley. “Stochastic differential equations for power law behaviors”,
Publications
"
CONFERENCES"
Krishnan, E. Haghani, A. Zakhor, “Local Estimation of Collision Probabilities in 802.11 WLANs: An Experimental
Study," IEEE WCNC 2011, Cancun."
Krishnan, and A. Zakhor, “Adaptive Carrier-Sensing for Throughput Improvement in IEEE 802.11 Networks,"
IEEE GLOBECOM 2010, Miami, FL. "
E. Haghani, M. Krishnan and A. Zakhor, "A Method for Estimating Access Delay Distribution in IEEE 802.11
Networks," accepted for publication at IEEE GLOBECOM 2011, Houston, TX, December 2011."
M. Krishnan, E. Haghani, A. Zakhor, “"Packet Length Adaptation in WLANs with Hidden Nodes and
Time-Varying Channels," accepted for publication at IEEE GLOBECOM 2011, Houston, Texas."
Somayeh Sojoudi, Steven H. Low and John C. Doyle, "Effects of Buffers on Stability of Internet Congestion Controllers", IEEE International Conference on Computer Communications (INFOCOM), mini conference,
China, 2011. "
Zhenhua Liu, Minghong Lin, Adam Wierman, Steven H. Low and Lachlan L. H. Andrew, "Greening geographic
Publications
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CONFERENCES"
J. Nair, A. Wierman, B. Zwart. “Scheduling for the tail: robustness versus optimality”, Proceedings of Allerton,
2010 (Invited paper)"
V. Borkar, J. Nair and N. Sanketh. “Manufacturing consent,” Proceedings of Allerton, 2010 (Invited paper)"
Sudeep Kamath and Venkat Anantharam,``A new dual to the Gacs-Korner common information defined via the Gray-Wyner system", Proceedings of the 48th Annual Allerton Conference on Communications, Control and
Computing, Urbana, Illinois, September 29 -October 1, 2010."
Naryana Santhanam and Venkat Anantharam, ``What risks lead to ruin", Proceedings of the 48th Annual Allerton Conference on Communications, Control and Computing,Urbana, Illinois, September 29 -October 1, 2010."
Assane Gueye, Jean C. Walrand and Venkat Anantharam. ``Design of Network Topology in an Adversarial Environment", GameSec2010, Conference on Decision and Game Theory for Security, 22 -23 November 2010,
Berlin, Germany."
Assane Gueye, Jean C. Walrand, and Venkat Anantharam, “A Network Topology Design Game: How to Choose Communication Links in an Adversarial Environment?”,GameNets2011, 2nd International ICST Conference on
Publications
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CONFERENCES"
Sudeep U. Kamath, David N. C. Tse, and Venkat Anantharam, “Generalized Network Sharing Bound and the Two-Unicast Problem". NetCod 2011, The 2011 International Symposium on Network Coding, Beijing, China, 25
- 27 July, 2011. "
T. H. Kim. J. Ni, R. Srikant and N. Vaidya. On the Achievable Throughput of CSMA Under Imperfect Carrier
Sensing. Proc. IEEE INFOCOM 2011."
L. Jiang, M. Leconte, J. Ni, R. Srikant and J. Walrand. Fast Mixing of Parallel Glauber Dynamics and
Low-Delay CSMA Scheduling, Proc. IEEE INFOCOM Mini-Conference 2011. (Collaborative Effort)"
T. Ji and R. Srikant. Scheduling in Wireless Networks with Connection Arrivals and Departures. Proc. ITA 2011. S Xiao, W Gong, D Towsley. Secure Wireless Communication with Dynamic Secrets. INFOCOM 2010.
(runner-up for best paper award) "
S Xiao, W Gong. Mobility Can Help: Protect User Identity with Dynamic Credentials. 11th International
Publications
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CONFERENCES"
J. Tan, W. Wei, B. Jiang, N. Shroff, D. Towsley. “Can Multipath Routing Mitigate Power Law Delays? – Effects of
Parallelism on Tail Performance, ITC 2010, September 2010. (collaborative effort)"
B. Ribeiro and D. Towsley. "Estimating and Sampling Graphs with Multidimensional Random Walks", ACM
SIGCOMM Internet Measurement Conference, Nov, 2010."
W Zeng, X Chen, A Russell, S Vasudevan, B Wang and W Wei, "Neighbor Discovery in Wireless Networks with
Multipacket Reception", Proceedings of MobiHoc, Paris, France, May 2011."
Y.-s. Lim, B. Ribeiro, D.S. Menasche, P. Basu, D. Towsley. “Online Estimating The Top k Nodes of a Network”,
