Design & Development Forum
Tuesday, 1 December 2009
10:15 - 12:15 Session 101: Modeling and Simulation of Wireless Networks
14:00 - 16:00 Session 102: Modeling and Simulation of Wireless Networks
16:30 - 18:30 Session 103: The Internet Resource Public Key Infrastructure (RPKI)
Wednesday, 2 December 2009
10:15 - 12:15 Session 201: Evolution to 4G Wireless: The Role of E-UTRAN and EPC
14:00 - 16:00 Session 202: Evolution to 4G Wireless: The Role of E-UTRAN and EPC
16:30 - 18:30 Sessions 203: Location-based services and Localization in Wireless Networks
Thursday, 3 December 2009
10:15 - 12:15 Session 302: Wireless Access for Vehicular Environments (WAVE) Technology
14:00 - 16:00 Session 303: Wireless Access for Vehicular Environments (WAVE) Technology
Tuesday, 1 December 2009 •ن10:15 - 12:15نن& 14:00 -ن16:00 • Tapa Ballroom 2
Session 101 andنSession 102:نModeling and Simulation of Wireless Networksن>>PDF
Jack L. Burbank, Jon R. Ward, and William T. Kasch
The Johns Hopkins University Applied Physics Laboratory (JHU/APL)
Jack L. Burbankننننننننننننننننننننن Jon R. Ward
Modeling and Simulation (M&S) is a critical element in the design, development, and test and evaluation (T&E) of any network product or solution.ن In many cases, M&S provides the only method to gain insight into the performance of the eventual product or solution in a large-scale environment, and allows for more informed design trade studies.ن The goal of this technical session is to provide attendees an overview of many of the M&S tools and techniques that are available to assist them in their wireless projects.ن This four hour technical session aims to provide an overview of modeling and simulation (M&S) tools and techniques available to assist wireless network designers and developers.ن This session is an enhanced version of previous sessions on similar M&S topics in the 2005, 2006, 2007, and 2008 Designers and Developers (D&D) Forum by the authors.ن Previous D&D sessions focused on presentations that explained wireless networking protocols and demonstrated the advantages of disadvantages of M&S.ن This session offers an updated overview of wireless network technologies and M&S tools, and specific M&S examples that utilize these tools.نن
Title:نIntroduction to M&Sن>>PDF
Speaker: Jack Burbank, JHU/APL
Abstract: An overview of best practices for M&S considering the entire network stack.ننThis talk motivates the
more detailed talks of 2) MAC and PHY M&S and 4) Network M&S Tools.
Title:نWireless MAC and PHY Modeling and Simulationن>>PDF
Speaker: Jon Ward, JHU/APL
Abstract:نن This presentation describes best practices and common pitfalls for MAC and PHY M&S.ن
This includes references to existing M&S tools and descriptions of their MAC and PHY capabilities as well asنpractical examples using commercial wireless networking technologies (e.g., IEEE 802.11, IEEE 802.16).ن Testنand Evaluation (T&E) methods are also described leveraging tools such as MathWorks MATLAB and SimuLink,نNational Instruments LabVIEW, and Agilent Signal Studio, with a focus on waveform characteristics common toنwireless networking technologies (e.g., OFDM).
Title:نRF Propagation M&Sن>>PDFن
Speaker: Jon Ward, JHU/APL
Abstract: Overview of common RF Propagation large-scale and small-scale fading models and commonly usedنRF propagation tools.ن This includes best practices and common pitfalls with implementing models from scratchنand using some of the more well-known commercial tools.
Title:نWireless Network M&S Toolsن>>PDF
Speaker: Jack Burbank, JHU/APL
Abstract: This presentation provides an overview of existing network M&S tools, such as OPNET, NS2, QualNet, and GloMoSim, contrasting the strengths and weaknesses of these tools as related to M&S of wirelessنnetworks. This session includes capabilities and commonly encountered M&S pitfalls with reference to specificنexamples and standards-based technologies.ن This session also discusses hardware-in-the-loop T&Eنand distributed simulation methods.
Title:نWireless Networking Tutorialن>>PDFن
Speaker: Jack Burbank/Jon Ward, JHU/APL
Abstract: Overview of prevalent wireless networking technologies and applications such as IEEE 802.11, IEEE 802.16, IEEE 802.22, Bluetooth, ZigBee.ن This includes network applications and MAC and PHY descriptionsنas well as real-world M&S and T&E discussions.نن
Tuesday, 1 December 2009ن•ن16:30 - 18:30 • Tapa Ballroom 2
Session 103: نThe Internet Resource Public Key Infrastructure (RPKI)
Dr. Stephen Kent, BBN Technologies
Routing of traffic between network service providers in the public Internet is notoriously insecure, as illustrated by Pakistan Telecom's "hijacking" of YouTube address space in 2008. In 2006, the organizations that manage the allocation of all Internet address space agreed to initiate an effort to create a public key infrastructure that attests to the allocation of these resources. This PKI is a first step in improving routing security for the public Internet. This session beings together individuals who are leading this effort, and the development of corresponding Internet standards. The speakers will describe the RPKI project and associated Internet standards, provide a status update, and discuss plans for further improvements to routing security in the public Internet.
Title:نResource Certification: A Public Key Infrastructure for Ip Addresses and Autonomous Systemsن>> PDF
Speaker: Dr. Stephen Kent (BBN Technologies)
Abstract:نن This presentation provides an overview of the Resource Public Key Infrastructure (RPKI) project and related IETF standards. The RPKI issues X.509 public key certificates that bind IP address and AS numberنresources to a public key, and, hence to the entity that holds the corresponding private key.
These certificates areنused to attest to resource allocations, enabling resource holders to generate digitally signed attestations relatedنto their holdings. Relying parties (primarily Internet Service Providers) will be able to process these attestationsنto verify assertions related to resource holdings. The primary motivation for the RPKI is to improve the security ofنinter-domain routing security, e.g., improving the security of routing announcements propagated by the BorderنGateway Protocol (BGP). The initial capability offered by the RPKI is that it will enable an address space holderنto state which ISPs are authorized to originate routes to his address space. As an example of the utility of thisنtechnology, if it were deployed, the 2008 hijacking of YouTube address space by Pakistan Telecom could have been prevented.
Title:نRoute Origination Authorizations: The use of digitally signed objects to support improved routing security.ن>> PDF
Speaker:نDr. Matthew Lepinski, BBN Technologies
Abstract:نThe Resource Public Key Infrastructure (RPKI) project provides X.509 public key certificates that bind IP address and AS number resources to a public signature verification key.ن This presentation describes an initialنapplication of RPKI certificates to provide secure origination for route advertisements within BGP.
In this initialنapplication RPKI certificates are used to verify two classes of digitally signed objects, Route OriginationنAuthorizations (ROA) and RPKI manifests.ن These digitally signed objects provide a mechanism for an addressنspace holder to authorize an autonomous system to originate routes to specified portions of this address space.ننAdditionally, these objects provide a mechanism for a relying party (e.g., an ISP) to determine that theنauthorization data that he receives from an untrusted intermediary completely and correctly specifies the wishes of the address space holder.
Title:ننRPKI Standards Status, Challenges, and Futureن>> PDF
Speaker:ننDr. Sandra Murphy (Sparta)
Abstract:نننThe IETF Secure Inter-Domain Routing (SIRD) working group is chartered to develop
the specifications for the RPKI.ن This talk will discuss the status of those specifications and the pathنto
IETF publication as standards.ن Included will be a discussion of challenges encountered and remaining in
developing the specifications, with particular emphasis on the incremental deployment and use of the
standards in the Internet routing infrastructure.ن Although the lack of the capability to authorize route
originations is the most common current cause of Internet routing incidents, residual vulnerabilities will
remain after the RPKI has provided that missing capability.ن This talk will discuss those vulnerabilities
and the potential for the RPKI to provide additional security capabilities that would counter those vulnerabilities
Wednesday, 2 Decemberن2009ن•ن10:15 - 12:15 & 14:00ن- 16:00 • Tapa Ballroom 2
Session 201 and Session 202: نEvolution to 4G Wireless: The Role of E-UTRAN and EPC
Dr. Vijay K. Varma and Dr. Gregory P. Pollini, Telcordia Technologies
Dr. Vijay K. Varma
The trend towards All-IP networks and increased demand for data services prompted the 3GPP to assess the implications for UMTS and High Speed Packet Access (HSPA) technologies.ن Even though these technologies will be highly competitive in the near term, to ensure competitiveness over a longer time frame, the 3GPP realized the need for a long-term evolution of the radio-access technology and an optimization of the packet core network.ن Research, development and standardization in these areas have led to the definition of Evolved UTRAN (E-UTRAN) and Evolved Packet Core (EPC) specifications.ن The E-UTRAN architecture is designed to meet the demands of low latency, high speed connections, and high spectral efficiency required of 4G wireless access, while the EPC architecture offers an optimized packet core capable of supporting not only E-UTRAN and legacy 3GPP radio access networks, but also other radio access technologies such as eHRPD (EvDO), WLAN, and WiMAX.ن In addition, the basic design philosophy of EPC includes QoS support for real-time services and seamless mobility within and across multiple radio access networks.ن While Verizon has already announced their intention to be the first one to deploy the E-UTRAN and EPC technologies, other service providers are gearing up for massive deployments to follow.ن This session will provide a forum to present and debate the latest technical developments and business/market potential for what promises to be the most prominent wireless technology ever to be deployed.
Title:نTrends and Drivers for 4G >> PDFن
Speaker: Rebecca Watson, Program Manager, Communications Infrastructure and Convergence, Stratecast (a Division of Frost & Sullivan)
Abstract:ن'Trends and Drivers for 4G Infrastructure' focuses on the benefits, trends and drivers of 4G technologies from an applications and services perspective. The presentation will include insight into how 4G technologies will potentially change service providers' business models, lifestyles of its users, and applications, content, and devices.
Title: Mobile Broadband -نThe Evolution to LTE and Beyond >> PDF
Speaker: Dr. Asok Chatterjee,نVice President, Strategy and Market Development, Ericsson, USA
Title:ننAccelerating the NGMN Ecosystem by a Reference Platform for Prototyping: The FOKUS OpenEPC >> PDF
Speaker: Prof. Thomas Magedanz, Technical University of Berlin
Abstract: The transition towards Next Generation Networks in the fixed telecommunications world has taken years, as not only all-IP principles had been introduced on the transport layer, but also the control and signaling platform hasنbeen changed completely. Today the concept of Next Generation Mobile Networks (NGMN) is gaining momentumنand related 3GPP Evolved Packet System (EPS) specifications are forming the technological foundation for realization.ننSimilar to the early days of NGN and IMS, the NGMN and EPC also deserve a deeper analysis and practicalنexperimentations to maximize the commercial exploitation of their technological capabilities.ن For this purpose theنFraunhofer Institute FOKUS has developed in cooperation with the Technische Universitaet Berlin the OpenEPC platformنtoolkit, which enables the industry, namely network operators, equipment manufacturers, and service providers, as wellنas the academia to investigate the technical potentialities of this key enabling technology for NGMN implementation.
This talk will motivate the key role of the EPC for seamless NGMN service provision and explain its major architectureنand capabilities.ن We will provide an overview of the major OpenEPC components and capabilities and illustrate someنusage scenarios for industrial and academic research and development activities, strongly convinced, that the Open EPCنwill accelerate the commercial deployment of NGMN infrastructures around the globe in analogy to the Open IMS coreنwithin the NGN world.
Title:نThe Network of the Future >> PDF
Speaker: Dr. Parviz Yegani, Director and Head of Architecture and Technology Standards, Juniper Networks, USA
Abstract: The foundation of "The network of the Future" is centered around building a truly scalable, optimized and intelligent packet-switched infrastructure that can accommodate not only the wireline broadband services but also the emerging wireless IP applications requiring equivalent capacity, latency and packet loss performance. This includes both session-based (i.e., IMS) and web-based services. One of the fundamental challenges that the mobile industry is facing today is declining ARPU (average revenue per user). To cope with this problem, "The network of the future" should incorporate cost-effective strategies by either addingنnew services (i.e., enhanced user experiences for which subscribers are willing to pay), or reducing operating expenses (OPEX). Ideally, pursuing both of these avenues at the same time will produce maximal benefit, inنterms of reducing cost/bit, improving value/bit and value/customer. The vision behind "The network of the future" is to address these 3 demands of mobile/converged carrier networks today and the evolution toward a fully-optimized network in the future. This talk elaborates on network evolution strategy to ensure a robust and reliable service delivery paradigm for both IMS- and web-based services. This includes: (a) Technology roadmap from 2G/3G to long-term evolution (LTE/EPC), (b) Migration toward the All-IP target architecture for "The Network of the Future", (c) Service enabling strategies (IMS, Femto, UMA), and (d) Fixed-Mobile Convergence (FMC) strategies.
Title: eHRPD -نUse of a Common Core and a Stepping Stone to LTE >> PDF
Speaker: Dr. Mike Dolan, Alcatel-Lucent
Abstract: CDMA operators who have deployed HRPD (EV-DO) need a way to take advantage of advances in IP packet core networks, as well as a way to migrate smoothly to LTE, should their plans include LTE. The 3GPP Evolved Packet Core (EPC) provides a unified approach to IP core networks, as well as the ability to attach to multiple access networks.ن Attaching HRPD to EPC allows CDMA operators the benefits of EPC, as well as that smooth migration path.ن Evolved HRPD (eHRPD) provides that attachment.
Title:نAdvanced RAN Techniques for Improved Spectral Efficiency in LTE and LTE-Advanced >> PDF
Speaker: Dr. Sampath Rangarajan, Department Head, NEC Labs America, USA
Abstract: The Radio-Access Network within EUTRAN technologies such as LTE and LTE-A have incorporated multiple features to improve the air-interface spectral efficiency. These features include a) higher-order MIMO (4x4 in LTE and 8x8 LTE-A) in the downlink, support for uplink MIMO in LTE-A, b) advanced channel dependent frequency selective scheduling and radio resource management (RRM) schemes within a cell, which include contiguous resource allocation in LTE uplink for PAPR reduction and non-contiguous resource allocation in LTE-A uplink for improved scheduling flexibility and accommodating non-contiguous spectrum allocation, c) coordinated RRM among multiple cells using coordinated multipoint transmission techniques (CoMP), d) introduction of femtocells for both coverage and capacity enhancement and e) extension of wireless coverage through deployment of relays. This presentation will detail some of these advanced features, discuss potential gains achieved through these techniques and illustrate associated practical implementation challenges.ن
Title:ننPanel >> PDF
Chair:نProf. Thomas Magedanz, Technical University of Berlin
Wednesday, 2 Decemberن2009ن•ن16:30 -ن18:30 • Tapa Ballroom 2
Session 203: نLocation-based Services and Localization in Wireless Networks
Mussa Bshara,نVrije Universiteit Brussels
Wireless communication operators have realized the value and potential to make information services highly personalized. One of the best ways to personalize information services is to enable them to be location based. There are many wireless technologies (GSM, WiFI, WiMax, LTE etc) competing in the commercial space, numerous methods of determining location (GPS, A-GPS, TDOA, AOA, etc) and various architectures for providing location information to clients and location applications.ن
Title:نLocalization in WiMAX networks depending on map-supported path loss model >> PDF
Speaker:نMussa Bshara,نVrije Universiteit Brussels
Authors:ننMussa Bshara, Leo Van Biesen, Vrije Universiteit Brussels
Abstract:نThis paper considers the problem of improving localization accuracy in WiMAX networks by adjustingنpath loss model exponents depending on public road network information. First, localization depending on pathنloss model is discussed; the used path loss model is a common one, obtained for an urban environment.ننSecond, the road network information is used to improve the accuracy by adjusting the path loss exponents forنbetter range estimation. The results of the proposed approaches are illustrated and compared on an exampleنwhose data were collected from a WiMAX network in a challenging urban area in the Brussels capitol city.
Title:نThree Dimensional Localization in Wireless Sensor Networks using the Adapted Multi-Lateration Technique Considering Range Measurement Errors >> PDF
Speaker: Sema Oktug, Istanbul Technical University
Authors: Gulnur Selda Kuruoglu, Melike Erol, Sema Oktug,نIstanbul Technical University
Abstract: نLocalization plays a key role in location based services such as parking assistance, location dependentنadvertising, people tracking, security management, etc. Usually, mobile users are theن driving forceنof thoseنapplications and the third dimension plays an important role on the functionality of the system. Accurateنlocalization in three dimensional space requires fast and robust algorithms.
The widely recognized laterationنtechnique uses anchor locations and distance measurements to locate a user. In real life, distance measurementsنare distorted due to environmental factors and it is well known that distance measurement errors affect theنaccuracy of the estimated location. Moreover, the complexity of the localization technique is a significant issue.ننMobile users of emerging technologies such as wearable computers demand ``light-weight'' techniques. In thisنpaper, we propose 3D-AML (Three Dimensional Adapted Multi-Lateration) to provide light-weight and accurateنlocalization.=ن3D-AML uses the common concept of intersecting circles in two dimensional environments in form of intersecting spheres in 3D. 3D-AML also uses geometric properties to estimate the location of a sensor node.ننHence, its time complexity is reasonably low by using arithmetic operations. We compare 3D-AML to theنconventional multilateration technique of GPS. We show that the 3D-AML method hasنlower localization error thanنthe multi-lateration technique for noisy measurements that are modeled with Gaussian distribution with varyingنstandard deviations.
Title:نGeolocation Awareness in the Internet >> PDF
Speaker: Richard Barnes, BBN Technologies
Abstract: An increasing number of Internet applications are capable of making use information about the physical world, especially information about the physical location of Internet devices, from racks of servers to cellularنhandsets. These applications are driving demand for IP geolocation, creating a unique challenge for geolocationنproviders: Locating endpoints in a network that is designed to be independent of physical locality. Thisنpresentation will discuss the ways in which location-awareness is beginning to become a significantن trend in theنInternet, and the ways in which geolocation technologies are working across layers of the networking stack toنmake geolocation information available to Internet applications.
Title:نLocation Conveyance with IMS: the OMA LOCSIP Service Enabler >> PDF
Speaker:نDon Lukacs, Telcordia Applied Research
Authors:نMike Loushine and Don Lukacs, Telcordia Applied Research
Abstract: SIP-based presence servers and other IMS network elements have a need to receive geographic positions of mobile devices from location servers.ن Currently these presence servers and IMS network elementsنhave to establish non-SIP interfaces to retrieve geographic positions.ن The Open Mobile Alliance (OMA) recentlyنcompleted the standardization of a new service enabler called Location in SIP (LOCSIP) to fill this need.ن Thisنtalk will explore the business and technical drivers for this service enabler, tour the architecture that heavilyنleverages SIP/IP core network capabilities, and cover the key featuresنto support IMS operator deploymentsنof LOCSIP.
Thursday, 3 December 2009ن•ن10:15 - 12:15 & 14:00 - 16:00 • Tapa Ballroom 2
Session 302 and Session 303:ننWireless Access for Vehicular Environments (WAVE) Technology
Weidong Xiang,نUniversity of Michigan-Dearborn
Vehicles have been operating on roadways on this planet for more than a century in an isolated way. We are at the right time to connect these vehicles and bring our society into a new age. Similar to the evolution of computer networks, when millions of computers were connected to share resources and information, the Internet emerged and some profound positive changes were made to our way of our life and work.
Wireless access for vehicular environments (WAVE) technology are expected to be widely employed in the future nationwide to radically improve the road transportation environment in terms of safety, efficiency and information access. Some example applications of WAVE systems are lane change, collision avoidance, and intelligent traffic light control. Deployment of WAVE systems will fundamentally smooth the progress of ITS by providing roadways with high performance physical platforms for gathering operational data. This deployment will also turn driving and riding into a completely new experience, safer and more pleasant than ever before.
The realization of WAVE systems requires intensive research, development and manufacturing activities. This includes algorithm development for many layers of the communication protocol stack, functional definition of various parts of the infrastructure, subsequent system design, prototype assessment and massive production. WAVE has the potential to generate a fresh information technology industry based upon roadway vehicles, and this will bring the US an opportunity to grow the high-tech sector of its economy and enhance its international economic competitiveness. The magnitude and breadth of the road information infrastructure impacts on the economy of the US are substantial, multi-layered and profound.
American automobile manufacturers are currently encountering unprecedented difficulties and are continuously losing their market share in North American. The first adoption of inter-vehicle networking will help the American automobile industry regain the lost market and a leading position in the competitiveness. The level of impact underlines the necessity to initiate the development of WAVE systems.
In addition, WAVE systems is capable of capturing and recording the detailed log of vehicle movements that generate a new resourceful means for homeland security and public safety related issues. On the other hand, certainly the privacy protection concerns surface and related policies are in need to guide associated records access and usage. Government should actively involve in making a suitable policy for the use of WAVE systems.
Title:نService Management for ITS using WAVE (1609.3) Networkingن>> PDF
Speaker: Tim Weilن JD Biggs and Associates
Abstract: نAutomotive networking on US highways is moving into high gear.ن Smart cars, connected vehicles, intelligent transportation systems (ITS), vehicular ad-hoc networks (VANET), andنvehicle telematicsنrepresent parallel and overlapping technologies and services that will defineنthe future of the Americanنroadway systems .ن The integration ofن computing technology andنexpanding communication services isنdriving the growing research and development efforts toنintegrate vehicles and roadway telematic services toنimprove preventive vehicle safety, reduceنtrafficنcongestion, and enable new applications for vehicleنmaintenance and commercial services.
Industrial and governmental efforts are underway to accelerate theنintroduction of vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) communications functions.ن In theنUnited Statesنthese major ITS projects have included US DOT IntelliDrive, CAMP/VSC-2; SafeTrip21, IEEEنWAVE, California PATH, and the Connected Vehicle Proving Center (CVPC).
An Intelligent Transportation System (ITS) technical architecture for Service Managementنhas been developedنbased on IEEE 1609 Wireless Access for Vehicular Environmentsن(WAVE) standards for secure vehicle-to-vehicle and vehicle-to-infrastructure wirelessنcommunication.ن This study defines an ITS Service Managementنmodel based onن the networkingن(IEEE 1609.3),نand security (IEEE 1609.2)ن protocols.ن An examination of theنworking modelنdemonstrates the use of a 1609.3 Provider Service Identifier (PSID)ن to provision and secureنITS services and applications usingنtheنDSRC/WAVE communication stack.
Title:نAn Overview of Vehicular Communications and Networking in Europe >> PDF
Speaker:نProf. Gianluigi Ferran, University of Parma, Italy
Authors:نStefano Busanelli, Gianluigi Ferrari (University of Parma, Italy), and Sooksan Panichpapiboon (King Mongkut's Institute of Technology Ladkrabang, Bangkok, Thailand)
Abstract:نImagine a world where there is no car accident, where congestion is drastically reduced, and where your car is energy efﬁcient and pollutes less. Despite of the appearance, these words do not describe the vision of a utopian. Instead, making this dream true, by exploiting Information and Communications Technologies (ICTs), is the main goal of the i2010 Intelligent Car Initiative, one of the more ambitious program of the European Commission. Europe believes in Intelligent Transportation Systems (ITSs) and it also believes that in a really near future ITSs will ﬁnally approach the market.
It is easy to explain how an ITS works and which are its goals. In a nutshell, road operators, infras䍩tructure, vehicles, their drivers, and other road vehicles collaborate in order to improve global safety, trafﬁc efﬁciency, and comfort. Cooperation will contribute to these objectives beyond the improvements achievable with stand-alone systems, regardless of their smartness. Therefore, in this context cooperation is the keyword, the true enabling factor of ITSs. In practice, cooperation is achieved by sharing information, warnings, and emergency messages through all the ITS entities. Several are the issues to be addressed by an ITS to achieve an effective data sharing between the ITS actors. Which is the information worth to be shared? Who are the information providers which could be trusted? How is it possible to fuse together information coming from multiple sources, from different places and in different times? How can we provide reliable and affordable connectivity?
In this presentation, we focus on the connectivity problem and, in particular, we consider Vehicle-to-Vehicle (V2V) communications, also called Car-to-Car (C2C) communications. With the respect to a standard ITS scenario, V2V communications are the most challenging for two main reasons: (i) V2V data exchanges typically happen between highly mobile nodes, with no knowledge of each other; (ii) this kind of communications have often strict requirements in terms of latency, since they have a high probability of carrying safety critical information (e.g., the next curve is slippery). Throughout the presentation, we describe the more appealing V2V communication strategies presented by the European research community, discussing their advantages and weaknesses. As we will see, several solutions have emerged from integrated European projects, and this proves that collaboration between institutions, universities, and companies is a key factor for the design and implementation of the ITSs themselves.
Title:㺹㺹A Vehicular Network Simulator and Testbed over Mobile Wireless Channels >> PDF
Speaker:㺹Fuqiang Liu (Tongji University, China)
Abstract:This talk will give a brief overview of the whats and whys of vehicular networking,㺹taking into account the realistic constraints that affect the design of vehicle-to-vehicle (V2V)㺹communications and㺹vehicular infrastructure integration (VII) in China. Several issues㺹and challenges will be reviewed㺹for the㺹realization of vehicular wireless networks, including㺹theoretical research on enabling technology, a simulator㺹for vehicular network, and a㺹hardware-based real-world testbed.
The key research topics include multi-channel coordination and channel scheduling,㺹realistic mobility modeling and mobility prediction, cluster-based routing protocols,㺹improved MIMO channel models for vehicular networks and etc..
The system simulator is developed to mitigate the limitations on the real-world testbeds.㺹㺹Preliminary results already demonstrate the applicability of the simulator in conducting㺹performance evaluation and㺹sensitivity analysis for the scenarios which are difficult to assess㺹to by using existing hardware testbeds.
The simulator makes the use of real map data㺹(such as the map of Jiading campus, Tongji Univ.) and traffic,㺹as well as realistic mobility㺹models that include the information of both roads and the vehicle movements.
In addition, a㺹testbed of vehicular communications has been developed as well.
The system simulator and testbed are applicable to evaluate the performance of the vehicular㺹networks with a MIMO configuration for the real-world V2V and VII activities. Meanwhile, we㺹focus on the theory and technologies of vehicular communications and how it can be㺹integrated into a 4G-testing system to verify new and advanced techniques that likely will㺹be adopted in the next generation wireless communication systems, such as WiMAX and㺹LTE. Furthermore, a comprehensive simulation platform for 4G systems is constructed.
Title:㺹Introduction of a Vehicular Networks Simulator (VSN) for Research, Design and Development of WAVE Systems >> PDF
Speaker:㺹Weidong Xiang (University of Michigan, Dearborn, USA)
Abstract:㺹In this talk, we will introduce and release a WAVE simulator for research and engineering purposes. The unique of the simulator lies on its cross-layer and systematic strategy built㺹upon WAVE㺹channel models that are proposed by the center of vehicular communications㺹and networks, at University㺹of Michigan, Dearborn based on extensive experiments. The㺹simulator will integrate signal format, vehicle㺹type, transceiver settings, TIGER database㺹(shapefiles), terrains, road situations, vehicle distribution㺹models and rational driver behaviors.㺹㺹The simulator is capable of offering physical layer specifications㺹including signal coverage,㺹channel fading, bit error rate (BER), packet error rate (PER), and packet latency.
It also has㺹interface to high layer modules and protocols. The developed simulator provides a confident㺹and truthful evaluation for high layers' algorithms, protocols and performances. A certain㺹 amount of software㺹will be available for the participants and audience for free.
In addition, we will update the activities on a field programmable gate array (FPGA)-based㺹WAVE prototype㺹based on the IEEE 802.11p standard (draft). Such prototypes can be㺹used as WAVE development kits for㺹research and development, onboard units (OBUs)/roadside㺹units (RSUs) for building up WAVE testbed,㺹reference models for WAVE application specific㺹integration circuits
(ASIC) chip design.