The Networking Lab in the School of Computing

Transcription

1 The Networking Lab in the School of Computing There are no more /8 TCP/IP V4 Addresses!! WooHoo.I don t know what this means Don t worry Homer, the guys/girls in the Networking Lab will fix things!! Dr. Jim Martin Associate Professor School of Computing Clemson University jim.martin@cs.clemson.edu Slides last updated 10/23/2013 Networking Lab s Website: 1

2 Research Group s Mission Vision Statement: Computing and the Internet are converging Traditional broadcast video (Cable/Satellite) is converging with the Internet Networks are becoming more and more heterogeneous The scope of the lab s interests is more than networking, it includes operating systems, distributed systems, secure and trustworthy systems, and next generation Internet. Collectively these define the term cybersystems The networking group focuses on a range of problems that are at the heart of developing and analyzing emerging cybersystems. The mission of the lab is to support cutting edge research in cybersystems AND to train researchers to address the needs of the changing world.. Now that s what I m talking about! 2

3 Brief Introduction The Networking Group focuses on a range of problems in the area of computer networking. The focus the last several years has been on broadband Internet access. Web site: Funding Team NSF, Cisco, CableLabs, Department of Justice/National Institute of Justice, NASA, IBM Faculty: Jim Martin, Mike Westall, Brian Dean, Juan Gilbert, KC Wang, Harlan Russel, Richard Brooks Students: Rahul Amin, Yunhui Fu, Gongbing Hong, and many MS and undergrad students 3

4 NETLAB Activities Research Pedagogy Outreach Wireless Systems Networking and Systems Course Development Emerging Scholars Broadband Access Internet Protocols and Issues VM-based labs CyberTiger Creative Inquiry Broadband Service Website Statewide Broadband Wireless Initiatives Networking Seminar Testbeds and Experimental Deployments 4

5 CyberSystems Research CyberInfrastructure: The hardware/software systems that operate harmoniously to meet the requirements of domain specific applications and systems. CI includes operating systems, networks, distributed systems, secure and trustworthy systems, HPC. Application Domain (e.g., connected vehicle) System Performance Trustworthy computing CyberInfrastructure Computational Theory Algorithms Software Engineering

6 Netlab s Wireless Research Building Cooperative Heterogeneous Wireless Networks With Re-Configurable Devices (NSF) The federal government is investing lots of money in how open spectrum can be used to enhance and extend broadband wireless access. We are developing techniques by which future multi-radio, reconfigurable smart phone devices can use multiple blocks of spectrum at any given time. We would like to develop an experimental solution to the WiFi offloading problem. Science Wireless Network (SciWiNet): We are a cellular operator providing 3G/4G data services to support academic research out in the wild 6

7 Netlab s Wireless Research CyberTiger Creative Inquiry Undergrads are developing a broadband wireless mapping capability to assess the coverage and performance of 3G/4G in SC. We would like to extend the scope of the study to monitor student usage of broadband wireless on campus. Perceived Quality User Assessment We are conducting human-computer interface studies that will provide guidelines for acceptable range of application behaviors over broadband access links. Applications include networked games and TCP-based adaptive bitrate video streaming. We would like to extend the scope of the study to assess how types of users perceive the utility of smartphones subject to different device form factors, user interfaces, service quality levels. Internet video streaming: Streaming over the Internet now involves various forms of adaptive streaming over HTTP. We are exploring how the Internet can better support this very strange application that voluntarily gives up available TCP bandwidth. 7

8 Smart Home Network Sensor Net Current home environments are not too far from this today!! Wired Network WiFi This shaded cloud is where broadband service providers such as Comcast and AT&T would like to evolve towards (a true service provider not just a network provider) 3G/4G Cellular Data Service (e.g., Verizon or AT&T) Wired Access (e.g., Cable, DSL, Fiber) Satellite Access The science behind this work is in the area of resource allocation and systems performance Video Entertainment (YouTube, Netflix Hulu, ) Internet Web, Cloud applications Power Company s Smart Grid Support Wireless Heterogeneous Networks (aka hetnets) extend application domains over a wireless Internet Driven by emerging application domains such as Intelligent Transportation System, Environmental Sensing, SmartGrid, health care, mobile broadband wireless,. Challenge #1 : Cooperative networks are COMPLICATED Challenge #2 : Cooperative networks BREAK current ISP economic models Challenge #3 : The current method for spectrum management is OUTDATED Challenge #4 : Pushes the original TCP/IP design BEYOND its capabilities

9 CyberTiger Creative Inquiry (formerly itiger) : Engage undergrads to work with PhD students on projects that develop applications that facilitate the study of large scale broadband wireless systems Current focus is building tools (server back end, smartphone apps) that provide a measurement and assessment capability of broadband cellular and WiFi data services Recent activities include a report to the FCC on the LACK of cellular infrastructure in SC outside of populated areas The contribution of this work is the broader impact on society- we want to ensure everyone in the USA has equal access to measurably robust wireless services

10 Building Cooperative Heterogeneous Wireless Networks With Re-Configurable Devices Future handhelds will contain multiple radios that can be used concurrently AND that are reconfigurable. Future wireless networks will be heterogeneous with cooperative mechanisms in place (early examples are femtocells and WiFi off loading) Autonomous Wireless Systems Open Spectrum Access Network Exit Internet SmartPhone Global Resource Controller 10

11 SciWiNet The Science Wireless Network (SciWiNet) Internet Geni WiMAX Research Community NIH Research DOE Research DOT/ITS Research Public Safety/ Homeland Security

12 SciWiNet Mobile Virtual Network Operator (MVNO) : A wireless service operator that does not own infrastructure The FCC defines MVNOs as companies that purchase airtime from facilitiesbased providers and then resell that service to the public for profit. The Mobile Network Operator (MNO) is likely to compete with the MVNO for customers MVNO services are generally lower cost, presumably a different set of customers. Some MVNO s are verticals (very specific users) Sprint (MNO) Internet Arterra / SciWiNet (DATA ONLY- no voice/text) Sprint is our MNO SciWiNet (+ partner Arterra) Provide the store to purchase devices and airtime Arterra provides the admin interface that allows users and devices to be managed To the FCC, they are the MVNO MVNO Example: Walmart resells T-Mobile services through Straight Talk 12

13 Research Objectives Evaluate the efficacy of a testbed for the academic research community. Make available the testbed to the GENI research community with a limited amount of integration. Make available the testbed to a controlled set of non-geni researchers. Pave the way for perhaps an independent MVNO that uses multiple Wireless Network Operators (Internet2 eventually becomes the MVNO, a startup MVNO is created,???). 13

14 Intellectual Merit Develops the concept, determines the underlying requirements of the research community. Determines how effectively a public/private partnership might serve to create a national scientific resource. Additional intellectual merit is derived by the contributions of the separate research projects that utilize the MVNO. 14

15 Go Back to the Basics Resource Allocation: The process by which network elements try to meet the competing demands that applications have for network resources 15

16 Wrap Up..Final Message The Internet is evolving because of technology but also because of economic and societal change Tremendous changes are happening due to Convergence of cable/over-the-air broadcasting, the Internet, and Mobile devices Convergence of applications, operating systems, and the Internet Human Centered Computing is very evident in the Internet. As networks connect humans, the effects of HCC are social interactions, social-systems effects, and the subsequent economics that attempt to capitalize on how things play out. Final thoughts: Our broad focus is to develop a theoretical framework for building networks of the future that meet new requirements Preparation for research in networking: required: CPSC851,852,854, helpful: math classes on optimization, random processes Please contact me if you would like to discuss our group s direction (jim.martin@cs.clemson.edu) 16