Programmable Wireless Networking Details and Logistics

Transcription

1 Programmable Wireless Networking Details and Logistics Dr. Joseph B. Evans Program Director Computer and Network Systems Computer & Information Science & Engineering National Science Foundation NSF Programmable Wireless Networking Informational Meeting 5 February 2004 Arlington, Virginia

2 Objectives Provide research area details Revisit motivation, objectives, and areas Discuss areas in detail with examples Discuss relationship of program to ongoing NSF wireless networking efforts and anticipated evolution Discuss logistics Provide context on relationship between focus area, the NeTS announcement in general Provide guidance on anticipated award sizes, distribution, and program coordination Discuss timelines and review procedures 5 February 2004 NSF Programmable Wireless Networking 2

3 Research Area Details

4 Principles Capitalize on the exciting and promising emerging scientific opportunities in wireless networking Develop flexible wireless networks that promise near universal connectivity Make more effective use of our shared spectrum resources Build on NSF s successes in wireless & networking Promote wireless networks community building Intermix networking, radio, and policy communities Integrate education with research through focused activities Broaden participation in wireless networking activities Sharpen programmatic focus in wireless networks and enhance budget flexibility with determinate plan Enhance intellectual coherence in CISE activities in wireless networks 5 February 2004 NSF Programmable Wireless Networking 4

5 Research Area Approach Programmable Wireless Networking Focus of Program Deployed Infrastructure Applications Commercial Solutions Architectures, algorithms, & protocols for auto-configuration, topology, routing, management Reusable Systems & Science Required for accelerated progress Programmable wireless systems that provide improved and more efficient connectivity & services Foundations Research Experimental Systems Programmable wireless systems with radio & software capabilities for research in networking, management, and control Close coupling required 5 February 2004 NSF Programmable Wireless Networking 5

6 Research Areas Explore dynamic spectrum management architectures and techniques Explore topology discovery, optimization, and network self-configuration as the physical layer moves from fixed to limited to flexible Explore interaction between routing, topology, and administration/management Provide flexible radios for networking research 5 February 2004 NSF Programmable Wireless Networking 6

7 Programmable Wireless Focus Research Area Dynamic spectrum management architectures and techniques Topology discovery, optimization and network self-configuration Spectrum Coordinated Networks or SCN Changes Needs Architectures that are secure & robust, with quality of service and policy enforcement How to choose among possible topologies, and evaluate novel network architectures Interaction between routing, topology, and administration Source: H. Rajan Which approaches for diverse applications, communication modes, security & policy domains 5 February 2004 NSF Programmable Wireless Networking 7

8 Spectrum Management The spectrum resource space consists of Frequency the radio frequencies used to carry a signal Time the time duration a signal is transmitted Space the volume over which the signal transmission is effectively communicated or causes interference Signal format the manner in which information is encoded on the radio frequency signal Frequency TDMA Space Time CDMA TV FM Source: G. Minden RF resources illustrating a few signals in time, frequency, and space 5 February 2004 NSF Programmable Wireless Networking 8

9 Dynamic Spectrum Management Architectures Broker-based and/or sensing-based Issues Implementing policies Secure and robust Quality of service Contract enforcement Evaluation and innovation needed Obtaining Frequencies for Programmable Wireless via Broker Obtaining Frequencies for Programmable Radio via Sensing 5 February 2004 NSF Programmable Wireless Networking 9

10 Towards Flexible Topologies Flexible topologies enabled by multiple simultaneous frequencies to multiple adjacent nodes Novel network architectures possible Significant service and performance improvements possible, including enhanced reliability and immunity Need to determine how to choose among possible topologies, and evaluate network architectures 5 February 2004 NSF Programmable Wireless Networking 10

11 Topology & Interlayer Awareness Flexible topology requires inter-layer and inter-plane awareness Dials to observe Traffic characteristics measured at network layer Error rate & characteristics (BER and distribution) MAC layer per packet error information Network and transport layer per flow correlations Receive characteristics Physical layer signal strength, interfering signals, background noise MAC layer transmit power, antenna in use Knobs to influence Physical layer Frequency & bandwidth Transmit power Beam width & direction Data rate, code, & chipping rate MAC protocol FEC strength Retransmit scheme MTU size Encryption & parameters Network layer Routing protocol Addressing plan(s) ACLs Interface framework needed to allow interoperation, with a flexible, usable set of scalable parameters 5 February 2004 NSF Programmable Wireless Networking 11

12 Routing, Topology, Administration Flexible wireless topologies implies more opportunity for connectivity with a larger set of other nodes from different administrative domains Policy & its implementation will be critical BGP currently the only multi-domain option, with static policies tuned to particular peerings Needs to be more automatic Policy and security framework needs to be integrated BGP Routing Complexities 5 February 2004 NSF Programmable Wireless Networking 12

13 Routing and Administration Flexibility creates substantial security challenges Already have very hard problems to solve in traditional networks, and flexibility makes these worse Which associations are appropriate and trusted? Separate public safety, cellular, hot-spot networks How do they talk? Under what circumstances? With what permissions? At what layer IP, upper and lower layers? Public Safety Hot-Spot Cellular 5 February 2004 NSF Programmable Wireless Networking 13

14 Radios for the Community Radios with programmable features are urgently needed to enable advanced systems Possible characteristics Flexible in RF carrier frequency (~ 0-6 GHz) Flexible in bandwidth (several 10 s MHz) Flexible in waveform Generally A/D and D/A driven Generated/processed by programmable DSP and/or FPGAs Flexible in MAC layer Flexible in network layer 5 February 2004 NSF Programmable Wireless Networking 14

15 Radios for the Community Many variations possible Efforts to build upon XG efforts JTRS radios UWB systems Multiband OFDM Prototype programmable radios within approximately 18 months Kits for networking experimentation to researchers by end of effort 5 February 2004 NSF Programmable Wireless Networking 15

16 Federal Research & Development Recent NSF efforts Measurements of spectrum for scientific basis Testbeds, preliminary flexible radio, workshops Ongoing DoD wireless efforts DARPA XG spectrum management architectures, languages, and radios Connectionless Networks (CN) cross-layer protocols for power conservation Mobile Network MIMO (MNM) Future Combat Systems - Comms (FCS-C) beamforming and ad hoc routing Joint Tactical Radio System (JTRS) Focus on addressing urgent military needs including legacy systems NASA Investigating software defined radio for space applications including inter-satellite links; research prototypes include ITT Low Power Transceiver (LPT) and SSP SDR-3000 Source: R. Sternowski ITT Low Power Transceiver DARPA GloMo Transceiver MHz Up to 10 MHz BW 1 Hz tune step 100 µs tune time 1 watt output Software radio 20 cubic inches Source: J. Freebersyer Source: P. Marshall Source: DoD 5 February 2004 NSF Programmable Wireless Networking 16

17 Industry and Community R & D Vanu, Inc. software radio systems Integrating cellular systems Currently lower bandwidth services Partially supported by NSF SBIR GNU Radio Similar to Vanu efforts in technical concept and capabilities Provide publicly-available platforms for development and fielding of more flexible radios Substantial UWB efforts focusing on physical layer under regulatory constraints Source: Vanu, Inc. Source: GNU Radio Source: FCC 5 February 2004 NSF Programmable Wireless Networking 17

18 Wireless Networking Evolution Protocol Layer & Technology Maturity ENG/ECS Device Prototypes CISE/CCF Physical Layer Systems CISE/CNS Network Layer Systems Network Layer Theory Application System Prototypes Application System Fundamentals Commonplace Use of Applications Physical Layer Theory CISE/SCI Device Concepts Time 5 February 2004 NSF Programmable Wireless Networking 18

19 Logistics

20 NeTS and ProWiN Programmable Wireless Networking is a focus area within the Research on Networking Technology and Systems program Efforts in the focus areas will be coordinated so that individual projects build upon each other Other wireless networking efforts that are not programmable wireless networking will be funded separately under NeTS 5 February 2004 NSF Programmable Wireless Networking 20

21 Typical Project Characteristics Projects investigating specific research topic areas Spectrum management, topology and autoconfiguration, or routing and administration Interdisciplinary with people from necessary areas of the problem Two or three investigators Up to $300,000 per year for three years Likely to be standard grants or CGIs 5 February 2004 NSF Programmable Wireless Networking 21

22 Typical Project Characteristics Programmable radio efforts Goal is a non-trivial number of functional programmable wireless networking experimental kits Efforts will likely need to involve industrial partners Up to $600,000 per year for three years Likely to be cooperative agreements 5 February 2004 NSF Programmable Wireless Networking 22

23 Possible Timeline Radios for Community 3,3 1,4 0,4 0,3 Topology and Self-configuration Routing 4,4 3,3 1,5 1,4 0,5 0,4 0,4 0,3 Spectrum Management 3,3 1,4 0,4 0,3 Testbeds 2,2 1,3 0,3 Workshops & Meetings FY2004 FY2005 FY2006 FY2007 FY2008 Notation: N,M is N new projects, M total efforts 5 February 2004 NSF Programmable Wireless Networking 23

24 This Solicitation s Schedule Announced in January 2004 Proposals due 14 April 2004 Panel review in May and June 2004 Award notifications in July or August 2004 And then, next year 5 February 2004 NSF Programmable Wireless Networking 24

25 Program Coordination Principal Investigators meetings Research student meetings Site visits as appropriate Annual challenges of appropriate scope End of effort targets 5 February 2004 NSF Programmable Wireless Networking 25

26 Metrics for Success Annual challenges to encourage progress as well as information sharing between projects Architectures evaluated using simulations and emulations under particular scenarios Demonstrate emulation with many nodes sharing realistic spectrum allocation End of effort targets Prototype complete systems Demonstrate systems with non-trivial number of nodes using unlicensed and/or research frequencies under selected scenarios of applied traffic, node location & external connectivity, and security threat Student participation in wider research community, facilitated and very strongly encouraged through workshops and meetings 5 February 2004 NSF Programmable Wireless Networking 26

27 NSF Programmable Wireless Networking