foundation for research and technology–hellas (forth) institute of computer science (ics)
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Foundation for Research and Technology–Hellas (FORTH) Institute of Computer Science (ICS). Telecommunications and Networks Laboratory (TNL). Dr. Vasilios A. Siris Broadband and Wireless Networking Activity Leader [email protected] http://www.ics.forth.gr/netlab. - PowerPoint PPT PresentationTRANSCRIPT
Foundation for Research and Technology–Hellas (FORTH)
Institute of Computer Science (ICS)
Dr. Vasilios A. SirisBroadband and Wireless Networking Activity Leader
http://www.ics.forth.gr/netlab
Telecommunications and Networks Laboratory (TNL)
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TELECOMMUNICATIONS AND NETWORKS LABORATORYINSTITUTE OF COMPUTER SCIENCE, FORTH
Institute of Computer Science (ICS), FORTH
One of FORTH’s 7 institutes Established 1983Personnel: 247 (2005)
Researchers/Univ. Faculty: 33Technical: 106Administrative/Support: 19Grads/Undergrads: 57/32
LaboratoriesCenter for Medical Informatics & Health Telematics Computer Vision and RoboticsHuman Computer InteractionInformation SystemsComputer Architecture & VLSITelecommunications & Networks FORTH-ICS
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TELECOMMUNICATIONS AND NETWORKS LABORATORYINSTITUTE OF COMPUTER SCIENCE, FORTH
Telecommunications & Networks Lab ActivitiesTelecommunications & Mobile Communications
Trust, cooperation, power efficiency in ad hoc networks
Wireless network security with focus on GSM/UMTS, 802.11
Broadband and Wireless NetworkingResource management & traffic engineering in wired/wireless networks
Channel and power control in dense WLANs & multi-hop mesh networks
Attack detection and mitigation in broadband networks
Digital Signal ProcessingStatistical algorithms for multimedia delivery over wireless networks
Voice processing, synthesis, and compression
Collaborative signal processing for sensor networks
Mobile Computing Mobile positioning, and location-based services
Mobile network traffic measurement and analysis
Mobile peer-to-peer computing
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TELECOMMUNICATIONS AND NETWORKS LABORATORYINSTITUTE OF COMPUTER SCIENCE, FORTH
TNL RTD Goals
Explore novel network architecturesAd-hoc and mesh wireless networks
Sensor networks
Mobile peer-to-peer
Focus on cross-layer design of network protocols
Develop advanced network- and service-level software prototypes
Participate in research excellence & training networks, at National, European, and International level
Serve as a proof-of-concept laboratory for telecommunication systems and software
Promote innovation through RTD transfer and consulting services to industry and government
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TELECOMMUNICATIONS AND NETWORKS LABORATORYINSTITUTE OF COMPUTER SCIENCE, FORTH
TNL at a glanceResearchers: 5
Research associates: 1
Technical personnel: 2
Research assistants: 17
(6 Ph.D and 11 M.Sc. students)
Journal publications: 20
Book publications: 3
Conference publications: 38
Citations: 441 (101 self sited)
Project funds:1.630K € (05-08: 966K €)
Funds from services: 500K € (05-08 150K €)
During 2000 -2004
Growth of personnel
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TELECOMMUNICATIONS AND NETWORKS LABORATORYINSTITUTE OF COMPUTER SCIENCE, FORTH
Traffic Management in Next Generation Wireless/Wired Networks
Efficient traffic management, seamless congestion control, and end-to-end Quality of Service (QoS) support
ImportanceIncreased access to Internet through wireless networks
Different users/applications demand different quality
Objectives / Expected resultsDevelop novel models based on cross-layer design for heterogeneous technologies (wired/wireless)
Investigate procedures to control interference, extend coverage, increase spatial reuse, reduce battery consumption
Investigate new architectures: multi-hop, multi-channel, ad-hoc, sensor networks
Investigate QoS support in conjunction with security
Evaluate using analysis, simulation & prototype implementation
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TELECOMMUNICATIONS AND NETWORKS LABORATORYINSTITUTE OF COMPUTER SCIENCE, FORTH
Design, Management, and Security in Wireless Networks supporting Quality of Service
Integrate technical knowledge and research results to provide state-of-the-art consulting/research services and measurement studiesImportance
Wireless networks is a key technology for providing cost-effective broadband access in rural and densely populated areasCurrent design focuses on best-effort services, increased use of Voice-over-IP and streaming videoSecurity up to now isolated from QoS support
Objectives / Expected resultsDevelop new techniques for design and management of secure wireless networksExperiment with new technologies in advanced local and metropolitan area test-bedsProvide high-quality consulting, spectrum measurement services
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TELECOMMUNICATIONS AND NETWORKS LABORATORYINSTITUTE OF COMPUTER SCIENCE, FORTH
Performance & resource sharing
objectives
Research approach & goals
Wireless technology
Abstract models for throughput/constraints
Map models tomechanisms
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TELECOMMUNICATIONS AND NETWORKS LABORATORYINSTITUTE OF COMPUTER SCIENCE, FORTH
TNL Infrastructure
MAC/Network experimentation Linux/MadWiFi 802.11 MAC parameter control test-bed
Wireless measurement equipmentAirMagnet Laptop Analyzer 2.4/5 GHz and site surveyor
Spectrum analyzers: Rohde&Schwarz FSH-6 (100KHz-6GHz), Spectran 6060 (1MHz-6GHz), low freq. detectors (3Hz-3GHz)
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TELECOMMUNICATIONS AND NETWORKS LABORATORYINSTITUTE OF COMPUTER SCIENCE, FORTH
IEEE 802.11e WLAN test-bed
MAC parameter control module
SNMP
STA 1
STA 2
STA 11
STA 10
…
Cisco 1200 Series Access Point IOS Version 12.3(4)JA with WMMSNMP IEEE 802.11 QoS MIB
D-Link DWL-G650 Wireless CardsAtheros 5211 chipset, MadWiFiUsed by Linux stations
D-Link DWL-AG660 Wireless CardsAtheros 5212 chipsetUsed by Window XP station
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TELECOMMUNICATIONS AND NETWORKS LABORATORYINSTITUTE OF COMPUTER SCIENCE, FORTH
TNL Infrastructure (cont.)
Science and Technology Park – Crete (STEP-C) Hotspot: serves ~ 1000 users, based on 802.11g/a
Heraklion Wireless MAN: Currently based on 802.11b, >100 Km2 coverage, serving 30 stationary sites. Evolving into multi-hop, multi-channel multi-radio MESH test-bed
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TELECOMMUNICATIONS AND NETWORKS LABORATORYINSTITUTE OF COMPUTER SCIENCE, FORTH
Heraklion MESH: Advanced Metropolitan Multi-hop Multi-channel Test-bed
Under deployment
Unique in Greece
12 nodes (mini PC/Linux) with 2-4 radio interfaces (802.11a/g, future WiMAX)
MadWiFi drivers, OLSR routing
Test-bed for
802.11e QoS
power control / channel selection
load-based routing
FORTH
NN
EEWW
SS
~5Km, 11g, ≥34Mbps
~4.5Km, 11a, 54Mbps
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TELECOMMUNICATIONS AND NETWORKS LABORATORYINSTITUTE OF COMPUTER SCIENCE, FORTH
Recent research activities
Resource control for 802.11 WLANsefficient utilization & throughput differentiationmulti-rate operation, 802.11e EDCA & HCCA modescoexistence of real-time and elastic trafficunsaturated traffic conditions
Access point selectiondelay-based selection for achieving throughput fairness
SINR and power control in ad hoc networkstradeoff between SINR threshold and connectivity
Power and channel control for dense WLANscell-breathing for load-balancingconsider MAC/network layer performance in target objective
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TELECOMMUNICATIONS AND NETWORKS LABORATORYINSTITUTE OF COMPUTER SCIENCE, FORTH
State of the Art in Wireless Measurements
Over-provisioning in wired networks is acceptable but in wireless networks can be problematic
Challenges to set a testbed
Complexity in correlating measurements from various tools
Complexity of the radio propagation in real-environments
Academics are reluctant to expend the time and energy to sanitize the data sets
Companies are reluctant to disclose their data
Lack of benchmarks
Mobility Activity lead by Prof. Maria Papadopouli([email protected])
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TELECOMMUNICATIONS AND NETWORKS LABORATORYINSTITUTE OF COMPUTER SCIENCE, FORTH
Research Activities (1/2)
Uncover deficiencies & identify possible optimizations Using measurements in large-scale production networks
Propose realistic models & benchmarks for network topology, traffic demand, mobility
Design and evaluate protocols for improving the QoS Emphasis on capacity planning, admission control, buffer
management Employ realistic benchmarks & models in their evaluation
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TELECOMMUNICATIONS AND NETWORKS LABORATORYINSTITUTE OF COMPUTER SCIENCE, FORTH
FORTH Repository
Online repository of Wireless measurement data Packet headers, snmp, syslog, signal quality Models (such as for flow & user arrivals) Monitoring tools
Corresponds to more than 700 APs & 20,000 users
http://www.cs.unc.edu/Research/mobile/datatraces.htm
Login/ password access after free registration
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TELECOMMUNICATIONS AND NETWORKS LABORATORYINSTITUTE OF COMPUTER SCIENCE, FORTH
Research Activities (2/2)
Develop principles that enable devices to Efficient monitoring of networks Selection of the appropriate channel, network interface
Mobile peer-to-peer computing (mp2p) Develop various mp2p systems (such as 7DS)
Positioning Develop & analyze a positioning system (CLS) Testbed in museums & research park
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TELECOMMUNICATIONS AND NETWORKS LABORATORYINSTITUTE OF COMPUTER SCIENCE, FORTH
Key Collaborations
Institute for Systems Research - University of Maryland, USA. Prof. Anthony Ephremides
University of North Carolina at Chapel Hill, Prof. Haipeng Shen and Prof. Kevin Jeffay
CNR (National Research Council, IT), Marco Conti British Telecom (UK). Ongoing funding since
2001 FORTHnet S.A. Frame Agreement for Research
Collaboration
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TELECOMMUNICATIONS AND NETWORKS LABORATORYINSTITUTE OF COMPUTER SCIENCE, FORTH
Funding
CRETEWISE Design, Mgmt, Security of
Wireless Networks with QoS Wireless Ad Hoc Networks:
security, trust, and routing Sensor networks for structural
health monitoring 3D audio synthesis
Industrial:Industrial: National (GSRT):National (GSRT): British Telecom: Future
Wireless Networks FORTHnet S.A.: SLA
provisioning & monitoring Intracom: wireless smart cards GRnet S.A.: QoS mechanism
evaluation
Marie Curie: Excellence Grant Marie Curie: 2 re-integration
grants COST290: Traffic & QoS Mgmt
in Wireless Multimedia Nets
EU:EU:
Foundation for Research and Technology–Hellas (FORTH)
Institute of Computer Science (ICS)
Dr. Vasilios A. SirisBroadband and Wireless Networking Activity Leader
http://www.ics.forth.gr/netlab
Telecommunications and Networks Laboratory (TNL)