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ADCN
MURI Tools for the Analysis and Design of Complex Multi-
Scale Networks
Review Meeting
September 9, 2009
Overview
Jean WalrandDepartment of EECS
University of California at Berkeley
ADCNTeam Members
PIs:
Venkat Anantharam (UCB)
John Doyle (Caltech)
Weibo Gong (UMASS)
Steven Low (Caltech)
R. Srikant (UIUC)
Don Towsley (UMASS)
Jean Walrand (UCB)
Avideh Zakhor (UCB)
PhD Students/Post-Docs*:*Elina Athanasopoulou (UIUC)
Yan Cai (UMASS)
*Lijun Chen (CALTECH)
Assane Gueye (UCB)
Krister Jacobsson (CALTECH)
Bo Jiang (UMASS)
Libin Jiang (UCB)
Michael Krishnan (UCB)
Javad Lavaei (CALTECH)
Jiwoong Lee (UCB)
*Patrick Lee (UMASS)
*Jian Ni (UIUC)
Barlas Oguz (UCB)
Nikhil Shetty (UCB)
*Wei Song (UCB)
Somayeh Sojoudi (CALTECH)
*Chee-Wei Tan (CALTECH)
JK Unnikrishnan (CALTECH)
Sheng Xiao (UMASS)
ADCNPublications
JOURNALS
[P1] C. W. Tan and A. R. Calderbank, "Multiuser Detection of Alamouti Signals," IEEE Transactions on Communications, Vol. 57, No. 7, pp. 2080-2089, Jul. 2009.
[P2] C. W. Tan, D. P. Palomar and M. Chiang, "Energy-Robustness Tradeoff in Cellular Network Power Control," IEEE/ACM Transactions on Networking, Vol. 17, No. 3, pp. 912-925, Jun. 2009.
[P3] K. Jacobsson, L. L. H. Andrew, A. K. Tang, S. H. Low and H. Hjalmarsson, "An Improved Link Model for Window Flow Control and Its Application to FAST TCP, " in IEEE Transactions on Automatic Control, March 2009.
[P4] Chen, L., T. Cui and S. H. Low, " A Game-theoretic Framework for Medium Access Control," IEEE Journal of Selected Areas in Communications, 26(7):1116-1127, September 2008.
[P5] Chen, L., S. H. Low and J. C. Doyle, "Random Access Game and Medium Access Control Design," IEEE/ACM Transactions on Networking, submitted 2008.
[P6] Chen, L., T. Ho, M. Chiang, S. H. Low and J. C. Doyle, "Congestion Control for Multicast Flows with Network Coding," IEEE Transactions on Information Theory, submitted 2008.
[P7] Venkat Anantharam,``Counterexamples to a proposed Stam inequality on finite groups," IEEE Transactions on Information Theory, submitted August 2009.
ADCNPublicationsCONFERENCES - ACCEPTED
[C1] Javad Lavaei, John Doyle and Steven Low, "Congestion Control Algorithms from Optimal Control Perspective," IEEE Conference on Decision and Control, Dec 2009.
[C2] K. Jacobsson, L. L. H. Andrew and A. Tang, "Stability and Robustness Conditions using Frequency Dependent Half Planes," IEEE Conference on Decision and Control, Dec 2009.
[C3] M. Wang, C. W. Tan, A. Tang and S. H. Low, "How Bad is Single Path Routing? " Proc. IEEE GLOBECOM, Honolulu, Hawaii, Nov 30-Dec 4, 2009.
[C4] C. W. Tan, M. Chiang and R. Srikant, "Optimal Power Control and Beamforming in Multiuser Downlink Systems," Proc. Asilomar Conference on Signals, Systems and Computers, Monterey, CA, Nov 2009.
[C5] W. Song, M. Krishnan, and A. Zakhor, “Adaptive Packetization for Error-Prone Transmission over 802.11 WLANs with Hidden Terminals,” IEEE International Workshop on Multimedia Signal Processing, Rio de Janeiro, Brazil, October 2009.
[C6] M. Krishnan, S. Pollin and A. Zakhor, "Local Estimation of Collision Probabilities in 802.11 WLANs With Hidden Terminals," IEEE Globecom 2009 Wireless Networking Symposium (GC'09-WNS), Honolulu, HI, December 2009.
[C7] Libin Jiang and Jean Walrand, "Utility-Maximizing Scheduling for Stochastic Processing Networks," Forty-Seventh Annual Allerton Conference, Illinois, USA September 2009.
[C8] Libin Jiang and Jean Walrand, "Convergence and Stability of a Distributed CSMA Algorithm for Maximal Network Throughput," IEEE Conference on Decision and Control, Dec 2009.
ADCNPublicationsCONFERENCES - PRESENTED
[C9] Libin Jiang and Jean Walrand, "A Distributed CSMA Algorithm for Throughput and Utility Maximization in Wireless Networks," Forty-Sixth Annual Allerton Conference, Illinois, USA September 23-26, 2008.
[C10] Libin Jiang and Jean Walrand, "Approaching Throughput-Optimality in a Distributed CSMA Algorithm: Collisions and Stability," Mobihoc 2009, New Orleans, LA, May 2009.
[C11] Jiwoong Lee and J. Walrand, "Reliable relaying with uncertain knowledge," Game Theory for Networks, vol., no., pp.82-87, 13-15 May 2009.
[C12] C. W. Tan, M. Chiang and R. Srikant, "Maximizing Sum Rate and Minimizing MSE on Multiuser Downlink: Optimality, Fast Algorithms, and Equivalence via Max-min SIR," Proc. IEEE ISIT, Seoul, South Korea, Jun 28-Jul 3, 2009.
[C13] Jayakrishnan Nair and Steven H Low, "Optimal Job fragmentation (Extended Abstract)", The Eleventh Workshop on Mathematical Performance Modeling and Analysis, Seattle, WA, June 2009; Also in Performance Evaluation Review, 2009.
[C14] C. W. Tan, M. Chiang and R. Srikant, "Fast Algorithms and Performance Bounds for Sum Rate Maximization in Wireless Networks," Proc. IEEE INFOCOM, Rio de Janerio, Brazil, Apr 20-25, 2009.
[C15] M. Suchara, L. L. H. Andrew, R. Witt, K. Jacobsson, B. P. Wydrowski, and S. H. Low, "Implementation of Provably Stable MaxNet," in Proc. of BROADNETS 2008, London, UK, September 2008.
ADCNPublications
CONFERENCES - SUBMITTED
[C16] B. Gauvin, B. Ribeiro, B. Liu, D. Towsley, J. Wang. "Measurement and Analysis of Publishing Characteristics on MySpace," submitted to INFOCOM 2010.
[C17] Y. Cai, P.-C. Lee, W. Gong, D. Towsley. "On the Mitigation of Traffic Correlation Attacks on Router Queues," submitted to INFOCOM 2010.
[C18] J. J. Jaramillo and R. Srikant. Optimal Scheduling for Fair Resource Allocation in Ad Hoc Networks with Elastic and Inelastic Traffic.http://arxiv.org/abs/0907.5402
[C19] S. Liu, L. Ying and R. Srikant. Throughput-Optimal Opportunistic Scheduling in the Presence of Flow-Level Dynamics.http://arxiv.org/abs/0907.3977
[C20] Jian Ni, Bo (Rambo) Tan, R. Srikant, "Q-CSMA: Queue-Length Based CSMA/CA Algorithms for Achieving Maximum Throughput and Low Delay in Wireless Networks," Submitted on 15 Jan 2009.
ADCNCollaboration/Common Themes
• Srikant/Walrand: Distributed CSMA algorithms and their performance analysis
• Shroff/Srikant/Walrand: LQF/GMS
• Shroff/Srikant: Performance of the MaxWeight algorithm under general traffic models
• Kumar/Srikant: Scheduling packets with deadlines
• Srikant/Towsley: Delay performance of TCP in wireless networks
• Doyle/Kumar/Low/Modiano/Shroff/Srikant/Walrand: Network Utility Maximization
ADCNPerspective
Goals of Research Project:
• Understand complex effects in networks,
including long-range dependency and mutli-scale
features
• Propose new designs that take advantage of the
improved understanding
•Theory - Designs - LRD
ADCNPerspective: Theory
•Scheduling for Stability: [Lyapunov function]
• Maximum Weight - Tassiulas, Ephremides 93; McKeown, Anantharam, Walrand 98
• Longest Queue First - Dimakis, Walrand 06; Shroff et al. 08; Srikant 09
x, y
•TCP as Utility Optimization [Primal/Dual; Gradient Algorithm]
• Gong-Towsley-Mishra, PTFK 98, Kelly et al. 98,
Low & Lapsely 99, Srikant 00, Mo & Walrand 00, Srikant 04
•Integrated Protocols [Primal/Dual]
• Backpressure with Per Flow Queuing - Modiano & Neely; Srikant; Lin &
Shroff; Chiang; etc.
• Single Queue - Srikant & Stolyar 09 ...
•CSMA [Gradient Algorithm; Relative entropy]
• Basic Protocol - Jiang & Walrand 08
• Collision Models - Jiang & Walrand, Srikant 09
• Dynamic Control over Finite Horizon
• Formulation - Doyle & Low 09
ADCNPerspective: Theory
x
y
a
b
c
A
B
C
d
Shared link
D
E e
f
ADCNPerspective: Designs
•MAC:
• Improvement in WiFi throughput with loss differentiation - Zakhor et al. 09
•Transport:
• Self-Clocking in TCP - Low et al. 09
• Generalized Stability Criterion - Caltech. 09
•Physical:
• Improved Power Control - Srikant et al. 09
•Security:
• Generating Secret Key - Gong & Towsley 09
• Analysis of Burst Attacks - Gong & Towsley 09
•Robustness:
• Effect of Parameter Uncertainty - Walrand et al. 09
ADCNPerspective: LRD
. Empirical Observations - Willinger et al. 95
• Queuing Analysis - Norros, Duffield, O’Connell, Piterbarg, Husler etc
• Explanation - Konstantopoulos et al., Doyle, ...
• Controversy - Bhattacharya et al., Gibbens & Kelly, Cleveland
• Network Models, Control Theory - Anantharam
• Mitigation with Optimal File Partitioning - Low & Doyle 09
• Mitigation with Alternate Routing - Gong & Towsley 09
•Analysis in CDN Networks - Anantharam 09
• Poisson Counter Models - Gong & Towsley 08
• Stochastic Approximation Theory - Anantharam & Borkar 09
ADCNAgenda of Review Meeting
9:00 - 9:15 - Harry Chang: Opening remarks9:15 - 9:50 - Jean Walrand: Overview9:50 - 10:25 - Venkat Anantharam10:25 - 10:40 - Coffee Break10:40 - 11:15 - Jean Walrand11:15 - 11:50 - Avideh Zakhor11:50 - 1:00 - Lunch Break1:00 - 1:35 - R. Srikant1:35 - 2:10 - Weibo Gong2:10 - 2:45 - Don Towsley2:45 - 3:00 - Coffee Break3:00 - 3:35 - Steven Low3:35 - 4:10 - John Doyle4:10 - 5:00 - Feedback
Longest Queue First
Graphs satisfy “Local Pooling” - For every subset, there is a further subset that LQF serves at a constant rate larger than the sum of arrival rates in that set- Hence, if those queues are all longest, they decrease- Thus, max. queue length is a Lyapunov function
Primal/Dual
x, y
L(x, y; )
D( ) = max L(x, y; )
x*, y*, *
where λ minimizes D(λ) := Maxx,yL(x, y;λ)
Maximize L(x, y;λ) = f(x, y) − λg(x, y)
x, y
xn+1 = xn + αLx(xn, yn, λn)yn+1 = yn + αLy(xn, yn, λn)λn+1 = λn − βLλ(xn, yn, λn)
Backpressure Protocols
x
y
a
b
c
A
B
C
d
Shared link
D
E e
f
==> serve A if qA > qB
serve B (not C) if (qB - qD) > (qC - qE)+
serve D (not E) if qD > qE