Tutorials offered at VTC2010-Fall
T1: Wireless Broadband in 2020: Looking through the IMT-Advanced Eyehole
Presented by: Abd-Elhamid M & Najah Abu Ali
Understand motivations for IMT-Advanced networks.
Know IMT-Advanced current standing.
Understand enabling technologies for IMT-Advanced
Become aware of candidate IMT-Advanced networks.
Compare between the candidate technologies.
Know ongoing efforts towards IMT-Advanced networks
Explore enabling technologies for beyond IMT-Advanced.
Understand relevant regulatory and policy issues.
- Part I: How we got to IMT-Advanced (~1hr)
- Motivation for IMT-Advanced - Very brief review of generations leading to IMT-Advanced (4G), followed by an expanded focus on latter evolutions of 3G networks, especially HSPA+, LTE and WiMax 1.5. We anchor the arguments for IMT-Advanced networks around the following points, but elaborate on its general motivation as well.
- Increased basic data rates
- Indoor and cell-edge performance
- Support for high-mobility
- Core simplification
- Enabling Technologies - We review the advanced that established the possibility of achieving the IMT-Advanced objectives, including
- Carrier and spectrum aggregation
- Advanced antenna techniques
- Coordinated multipoint transmission
- Relaying techniques
- Tiered HARQ
- Status Quo - The intent here is give an up-to-date picture of IMT-Advanced networks in terms of standardization (ITU, 3GPP and IEEE), manufacturing and deployment.
- Part II: IMT-Advanced Networks (~1.5hr) - This part provides a description of the radio interface technologies considered as candidates for IMT-Advanced. It also offers a functionality-based view of their operation. The following structure will be common between the two candidates, and the part will conclude by a highlighting comparison.
- Candidate Technology
- Interface description
- Frame structure, addressing, ID
- Network entry and ranging
- Bandwidth requests and grants
- Scheduling, ARQ/HARQ
- Mobility management
- Part III: The Future of Wireless Broadband (~1hr) - This part offers a serious and detailed look at the wireless broadband beyond the IMT-Advanced, and attempts to project how such networks will evolve over the next ten years. The part contemplates the evolution of current technologies, in addition to the interaction of several factors including regulation, economies, environment considerations and social concerns.
- Interface considerations
- OFDMA evolutions
- Cognitive radios
- Dense Wavelength Division Multiplexing
- Network considerations
- Flat IP architectures with distributed routing
- 100Gbps Ethernet at the edge
- Access networks with variable structures
- Green networking
- Seamless wireless and wired network convergence
- Services considerations
- Multicast and broadcast services
- Location and context-based services
- Cloud/network computing
- Market considerations
- Demand projections
- Converging ecosystems
- Regulation and policies
- Government interest
- Spectrum regulation
- Resource sharing
- Open access
- VoIP and IPTV regulation
- Recap and Concluding Remarks
The tutorial is aimed at research and practitioners with high interest in wireless broadband networks. The tutorial will touch on various relevant aspects that would appeal to both specific and general interest. While offering firm background on emerging wireless broadband technologies, the tutorial also introduces researchers to issues that need to be resolved in the evolution of IMT-Advanced systems.
In addition to offering a primer on IMT-Advanced and its two candidate networks, the tutorial offers a conscious projection on the future of wireless broadband based on current ongoing efforts towards beyond IMT-Advanced technologies. The tutorial hence combines an introduction to LTE-Advanced and WiMax 2.0, their enabling technologies, and their individual qualities, all in addition to current research and industrial activities that will shape the evolution of IMT-Advanced networks in the next ten years.
T2: Open smart cards for wireless networks and services by Pr Pascal Urien, Telecom ParisTech 37/39 rue Dareau, 75014 Paris,France, Founder of EtherTrust has been cancelled
T3: Cooperative Vehicle Safety Systems Enabled by Wireless Networks
Presented by: Yaser P. Fallah, Denis Gingras, Hariharan Krishan, David Michelson,Shahrokh Valaee,Soumaya Cherkaoui
The main goal of this tutorial is to close the gap between academic and industrial research on cooperative vehicle safety (CVS) systems. The tutorial will cover a wide spectrum of system design issues concerning cooperative communication for vehicle safety applications. The following subjects are addressed: 1. Overview of recently developed standards for medium access and vehicular communication (IEEE protocol suites) 2) Design and Development of V2V Safety Applications 3) Communication control methods to improve vehicle tracking accuracy in CVS 4) Enhanced medium access methods for vehicle or data prioritization in emergency situations 5) robust and collaborative vehicle positioning methods for safety applications. The attendees will learn about the existing standards and standard compliant methods to improve CVS performance, in addition to an overview of proposals for improving the standard for CVS purposes.
Cooperative Vehicle Safety is one of the most promising and important applications of vehicular communication and networking. CVS benefits from exchange of vehicle state and safety information amongst vehicles and between vehicles and infrastructure. To this end, several technologies have to be developed for vehicle localization, vehicle information dissemination in vehicular networks, and detection hazardous situations from collected data. Given that safety is a time-critical and demanding application, efficiency, robustness and scalability demands on vehicular networks are significantly higher than usual Internet access applications.
This tutorial will examine the issues surrounding the design of CVS systems and eventual large scale deployment of such systems. It will begin with an overview of existing vehicular communication technologies, such as IEEE 802.11p and IEEE 1609 suites. The nature of the RF propagation environment and the channel impairments that must be both modeled and mitigated in order to achieve effective and reliable communications in such environments will be explained. Current industry efforts in developing V2V and V2I applications and technologies will be discussed and current issues identified. The overall CVS design requirement and practices will be discussed in more detail.
One of the main issues facing CVS systems is the scalability and efficiency of the vehicular ad-hoc networks on which CVS systems rely for vehicle information dissemination. An overview of communication control methods that combine congestion control methods with compression techniques for vehicle position information will be presented. In particular, the methods that are currently being considered by authors in collaboration with industry will be examined in more detail.
While the bulk of information delivered by vehicular network for CVS are positioning information, higher priority even driven messages are also generated occasionally, which must be differently handled. In fact, CVS systems rely on an efficient delivery of event driven safety-critical messages by the MAC layer to trigger a driver warning or a vehicle control procedure to avoid or mitigate a collision. In this session, we will present a few approaches considering risk evaluation and prioritization of data or vehicles to enhance access to the medium for vehicles in an emergency situation.
CVS and many other vehicular networking applications heavily rely on vehicle positioning. There are numerous issues with accuracy and availability of current GPS based positioning information (e.g. in urban canyons). For safety applications, vehicle position estimation must be much more robust and reliable. In this tutorial, hybrid fusion approaches will be presented, which consider collaborative approaches with nearby vehicles and road infrastructures to achieve more robust positioning.
- 1. Introduction
- 2. Vehicular Communication, Standards and Current Technologies
- 3. Propagation and Channel Modeling for Vehicular Communications
- 4. Design and Development of V2V Safety Applications: Cooperative Vehicle Safety
- 5. Communication control methods to improve vehicle tracking accuracy in CVS
- 6. Enhanced medium access methods for vehicle or data prioritization in emergency situations
- 7. Robust and collaborative vehicle positioning methods for safety applications.
- 8. Conclusions
The primary audience of this tutorial are researchers from both academia and industry who are interested in vehicle safety systems enabled by wireless networking. This includes R&D engineers for vehicular networking and safety systems and academic researchers and graduate students who are interested in learning about the current state of research in the area. There is no special background required, except for modest familiarity with communications and/or localization technologies. An overview of vehicular networking technologies will be provided at the beginning of the session to help attendees better understand the rest of the tutorial.
The tutorial covers a wide range of topics on the application of wireless networking in vehicular safety systems. The selected topics will provide the audience with the current state of the art in CVS technology and research. The tutorial considers both theoretical and practical aspects of CVS system design, providing the audience with an update on research findings and design issues that are usually not disseminated through traditional publication methods.
T4: Vehicular Ad Hoc Networks and Integrated Intelligent Transportation Systems
Presented by: Ivan Stojmenovic
This tutorial first reviews the components and algorithmic challenges of intelligent transportation systems: dynamic route selection, environmentally friendly driving, dynamic traffic light scheduling problem, reconfiguration of road network and traffic admission control, congestion modeling and forecast, and effective incentive and enforcement policies. ITS also includes vehicle-to-vehicle communication, with associated problems such as geocasting for congestion notification, vehicle to vehicle routing, and enabling application services for user devices. State of the art protocols for automotive networking and communication are described.
This tutorial then elaborates on recent vehicle-to-vehicle communication protocols, with the emphasis on protocols addressing intermittent connectivity of vehicular ad hoc networks (VANET). Data dissemination enables congestion notification (among others) and is based on tasks such as diffusion and broadcasting to a region (geocasting), which rely on single-hop and multi-hop inter-vehicle communications, respectively. Vehicle to vehicle routing enables application services for user devices via multi-hoping to roadside units, and direct communication among vehicles. Common issues in VANET routing are discussed.
Recent progress has been made toward intelligent transportation systems (ITS) powered by information technology, including sensor networks, wireless communications, and the Internet. The results from the ITS are expected to significantly improve the quality of driving, utilize road networks more efficiently, reduce fuel consumption, and reduce GHG emissions. This will be accomplished by research, development, and utilization of traffic models, communication models and protocols, optimal models of road network configuration, and fuel and GHG emission models.
An ITS is composed of several technological and strategic components:
Physical components include vehicles, road networks, traffic lights, communication networks, sensors, and service centers;
Logical components include monitoring software and client software running on vehicles, storage and processing subsystems running on servers, and communication protocols;
Server subsystems include software for route computation, traffic forecasting, and traffic-light management; and
Communication protocols move traffic data and requests from vehicles to servers and responses and commands from servers to vehicles.
Drivers need to be informed about all kinds of events and conditions that impact their travel. For example, they need to be informed about traffic congestion, slippery road conditions, rain, and so on.
Geocasting involves the broadcasting of information to all vehicles on a road segment or in a given geographic area, suppressing multiple warnings for the same event, and determining boundaries for spreading warnings. It is an important communication function. Geocasting is initiated by one vehicle or one RSU. The source of information intended for geocasting may or may not be located in the geocasting region. For example, reports on congestion on a highway segment may be useful to vehicles approaching a previous exit, and not necessarily to the vehicles already in the congested area. The primary mechanism to fulfill geocasting is broadcasting, which spreads the information without considering the region borders. When the discussion is not concerned about border issues, the task is frequently called broadcasting, or warning delivery, or data dissemination.
Novel ITS applications will require wireless communication between two vehicles, such as belonging to response teams, for car tracking, or two ordinary drivers. Extended communication between two vehicles on the road will be provided via other vehicles and RSUs. This is known as the routing task.
Tutorial deals with the vehicle-to-vehicle (V2V) and vehicle-infrastructure (V2I and I2V) data communication issues. The problems covered include geocasting for congestion notification (broadcast warning and traffic information to all vehicles on a road segment or in given area, suppress multiple warning for the same event, determine boundaries for warning spreading), routing (V2V, V2I, I2V) for communication between two cars or car tracking, and enabling application services by user devices (supporting Internet connections between users and service providers in a mobile environment). All protocols deal with intermittently connected network of vehicles, whose nature is also discussed. Routing and geocasting protocols with and without the use of RSU (road side units) are covered. An architecture for notification of traffic incidents and congestion, based on deploying belts on the road, is described.
- Vehicular ad hoc networks, V2V and V2I
- Physical, MAC and transport layers.
- Broadcasting and geocasting for congestion notification in VANET
- V2V and V2I Routing in VANET
- Bringing Internet into vehicles
- Mobility models and connectivity characteristics
- An architecture for the notification of traffic incidents
Researchers (including graduate students) in computing, engineering and mathematic disciplines. No particular background preparation needed.
After a general review of applications and technologies involved, this tutorial concentrates on algorithmic solutions on V2V communication issues. It is therefore a technical session presenting existing solutions in a concise intuitively clear manner, with examples, so that attendees have an immediate start in their research.
Ivan Stojmenovic received his Ph.D. degree in mathematics. He held regular and visiting positions in Serbia, Japan, USA, Canada, France, Mexico, Spain, UK (as Chair in Applied Computing at the University of Birmingham), Hong Kong, Brazil, and Taiwan, and is Full Professor the University of Ottawa, Canada. He published over 250 different papers, and edited five books on wireless, ad hoc, sensor and actuator networks and applied algorithms with Wiley. He is editor of over dozen journals, editor-in-chief of IEEE Transactions on Parallel and Distributed Systems (from January 2010), and founder and editor-in-chief of three journals (MVLSC, IJPEDS and AHSWN). Stojmenovic has h-index 35 and >5000 citations. He received three best paper awards and the Fast Breaking Paper for October 2003, by Thomson ISI ESI. He is recipient of the Royal Society Research Merit Award, UK. He is elected to IEEE Fellow status (Communications Society, class 2008), and is IEEE CS Distinguished Visitor 2010-12. He received Excellence in Research Award of the University of Ottawa 2009. Stojmenovic chaired and/or organized >50 workshops and conferences, and served in over 100 program committees. He was program co/vice-chair at IEEE PIMRC 2008, IEEE AINA-07, IEEE MASS-04&07, EUC-05&08, WONS-05, MSN-05&06, ISPA-05&07, founded workshop series at IEEE MASS, ICDCS, DCOSS, ACM Mobihoc, MSN, and was Workshop Chair at IEEE MASS-09, ACM Mobihoc-07&08. He presented over dozen tutorials.
T5: Enabling Mobile Video Services over WiMAX and LTE
Presented by: Ozgur Oyman, Intel Labs
Wireless networks are on the verge of a third phase of growth. The first phase was dominated by voice traffic, and the second phase, which we are currently in, is dominated by data traffic. In the third phase, we predict that the traffic will be dominated by video and will require new ways to optimize the network to prevent saturation. This increase in video traffic is one of the key drivers of the evolution to new mobile broadband standards like WiMAX 802.16m and 3G LTE and LTE Advanced, motivating the need for enhancing the video service capabilities of future cellular and mobile broadband systems. Therefore, it is important to understand both the potential and limitations of these networks for delivering video content in the future, which will include more than the traditional video broadcasts, but also video streaming and uploading in the uplink direction. In that vein, this tutorial will provide an overview of technology options for enabling broadcast and unicast video services over WiMAX and LTE networks, review related standardization activities and present new techniques which could be exploited to further enhance the video capacity and quality of user experience. Finally, we will address some of the promising longer term research vectors for enhancing video service capabilities over mobile broadband, such as cross-layer design, joint source-channel coding and distortion-aware link adaptation and resource allocation, and discuss related future technical challenges.
Researchers in academia and industry with interest in video over wireless
Enabling the delivery of video services to mobiles over cellular and mobile broadband networks is essential to ensure ubiquitous access to video content and services from any location, at anytime, with any device and technology. However, video communication through mobile broadband is a challenging problem due to limitations in capacity and difficulties in maintaining high reliability, quality and latency demands imposed by rich multimedia applications. These challenges create a unique opportunity to optimize WiMAX and LTE networks for video applications.
Dr. Ozgur Oyman received the B.S. (summa cum laude) degree in electrical engineering from Cornell University, Ithaca, NY, in 2000, and the M.S. and Ph.D. degrees in electrical engineering from Stanford University, Stanford, CA, in 2002 and 2005, respectively. Since September 2005, he has been a senior research scientist at Intel Labs, Santa Clara, CA, U.S.A.
Dr. Oyman's research broadly investigates wireless communications and networking, with special emphasis on cross-layer (PHY/MAC/APP) design and system-level optimization for cellular and mobile broadband wireless systems, heterogeneous multihop/mesh/adhoc communication architectures and multimedia/video transmission. He is author or co-author on over 45 technical publications, and has filed over 20 patent applications. He was a key contributor to Intel's IP portfolio on multihop/mesh/adhoc networking technologies, inventing several multihop relaying and cooperative transmission techniques that have been adopted by the IEEE 802.16 standards. He was a Stanford Graduate Fellow during his studies at the Information Systems Laboratory as a member of the Smart Antennas Research Group. His prior industry experience includes work at Qualcomm (2001), Beceem Communications (2004) and Intel (2005).
Dr. Oyman received Best Paper Awards from the 2007 IEEE Global Telecommunications Conference (GLOBECOM), the 2008 Cognitive Radio Oriented Wireless Networks and Communications Conference (CROWNCOM) and the 2008 IEEE International Symposium on Spread Spectrum Techniques and Applications (ISSSTA). He was the recipient of Intel Lab's Divisional Recognition Award for his contributions to research and standardization of multihop relaying techniques for next-generation WiMAX systems. He has served on the technical program committees of over 25 international conferences and workshops, and on the organizing committees of WCNC 2009 (TPC co-chair for NET track) and CROWNCOM 2009 (publicity chair). He also served as a guest editor for the EURASIP Journal on Wireless Communications and Networking, Special Issue on Femtocell Networks. He received a Certificate of Appreciation from the IEEE Communications Society in 2009 for his outstanding service. He is a member of Tau Beta Pi, Eta Kappa Nu and the IEEE.
T6: Secure and Survivable Wireless Networks by Yi Qian, University of Nebraska - Lincolnhas been cancelled
This tutorial introduces the principles of cooperative communication, commencing with the introduction of four basic MIMO types, namely
2. Space-time coding;
3. Spatial Division Multiplexing;
4. Spatial Division Multiple Access;
Their limitations are highlighted and it is shown, how the single-antenna-aided cooperative mobile may circumvent these limitations. The corresponding amplify-forward and decode-forward protocols as well as their hybrids are studied. Sophisticated multi-stage iterative channel coding schemes are proposed and it is argued that in the absence of accurate channel information at the relays the best way forward might be to use multiple-symbol differential detection. EXIT-chart-aided designs are used for creating near-capacity solutions. Finally, a range of future research directions as well as open problems are formulated.
IIn the early days of wireless communications the research community used to view multi-path-induced dispersion as an undesirable propagation phenomenon, which could only be combatted with the aid of complex channel equalizers. The longer the Channel Impulse Response (CIR) was, the more complex the channel equalizer became. However, provided that the complexity of a sufficiently high-memory channel equalizer was affordable, the receiver could benefit from the fact that the individual propagation paths faded independently. To elaborate a little further, even if one of the paths was experiencing a high attenuation, there was a good chance that some of the other paths were not, which led to a potential diversity gain. However, if the channel does not exhibit several independently fading paths, techniques of artificially inducing diversity may have to be sought. A simple option is to employ a higher direct-sequence spreading factor, which results in a higher number of resolvable multipath components and hence in an increased diversity gain. Naturally, this is only possible if either the available bandwidth may be extended according to the spreading factor or the achievable bitrate is reduced by the same factor. A whole host of classic diversity combining techniques may be invoked then for recovering the original signal. An alternative technique of providing multiple independently faded replicas of the transmitted signal is to employ relaying, distributed space-time coding or some other cooperation-aided procedure, which is the subject of this course. One could also view the benefits of decode-and-forward based relaying as receiving and then flawlessly regenerating and re-transmitting the original transmitted signal from a relay - provided of course that the relay succeeded in error-freely detecting the original transmitted signal. This course reviews the current state-of-the-art and proposes a number of novel relaying and cooperation techniques. An important related issue is the availability or the absence accurate channel information, which leads to the concept of coherent versus non-coherent detection at the relays and at the destination. Similarly, the related initial synchronization issues also have to be considered. Naturally, when using hard-decisions in the transmission chain, we discard valuable soft-information, which results in an eroded performance, albeit also reduces the complexity imposed. Hence the hard- versus soft-decoding performance trade-off will also be explored in the course, along with the benefits of interleaved random space-time coding invoked for multi-source cooperation.
- History, Background and an Information-theoretic Justification
- Classification of Cooperative Protocols
- Distributed Coding for Cooperation: Linear Dispersion Codes, Irregular Convolutional Codes and their Turbo-detection
- Extensions: Multi-node and Multi-antenna Systems
- Relay Selection and Resource Allocation for Cooperation
- Multi-Source Cooperation Using Superposition Coding and Physical Layer Algebraic Network Coding
- Coherent versus Non-coherent Detection Using Multiple-Symbol Differential Detection.
- The Effects of Shadow-Fading
- Advanced Topics, Future Research Directions and Open Problems
This light-hearted overview was prepared for colleagues from academia, industry, and government, including graduate students looking for open research problems. The level of treatment is mainly conceptual.
This overview considers all practical aspects of cooperative communications, including coherent versus non-coherent detection, the prevention of error propagation owing to decode-and-forward errors, EXIT-chart-aided radically new irregular FEC schemes, asynchronous operation, etc
Lajos Hanzo (http://www-mobile.ecs.soton.ac.uk) FREng, FIEEE, FIET, DSc received his degree in electronics in 1976 and his doctorate in 1983. During his 34-year career in telecommunications he has held various research and academic posts in Hungary, Germany and the UK. Since 1986 he has been with the School of Electronics and Computer Science, University of Southampton, UK, where he holds the chair in telecommunications. He has co-authored 19 books on mobile radio communications totalling in excess of 10 000, published 850 research papers and book chapters at IEEE Xplore, acted as TPC Chair of IEEE conferences, presented keynote lectures and been awarded a number of distinctions. Currently he is directing an academic research team, working on a range of research projects in the field of wireless multimedia communications sponsored by industry, the Engineering and Physical Sciences Research Council (EPSRC) UK, the European IST Programme and the Mobile Virtual Centre of Excellence (VCE), UK. He is an enthusiastic supporter of industrial and academic liaison and he offers a range of industrial courses. He is also an IEEE Distinguished Lecturer as well as a Governor of both the IEEE ComSoc and the VTS. He is the Editor-in-Chief of the IEEE Press and also a Chaired Prof. at Tsinghua University, Beijing. For further information on research in progress and associated publications please refer to http://www-mobile.ecs.soton.ac.uk
He presented tutorials at:
VTC'97_Phoenix; PIMRC'97_Helsinki; VTC'98_Ottawa; Globecom'98_Melbourne; VTC'99S_Houston; EURASIP'99_Krakow; VTC'99F_Amsterdam; VTC'2000S_Tokyo; VTC'2001S_Rhodes; Globecom'2000_San-Francisco; Globecom'2001_San_Antonio; ATAMS'2001_Krakow; Eurocon'2001_Bratislava; VTC'2002S_Birmingham; VTC'2002F_Vancouver; ICC'2002_New_York; Wireless'02_Calgary; WPMC'02_Honolulu; ATAMS'2002_Krakow; WCNC'03_New_Orleans; VTC'2003S_Jeju Island; PIMRC'2003_Beijing; VTC'2003F_Orlando; European Wireless'2004_Barcelona; ICC'2004_Paris; EUSIPCO'2004_Vienna; VTC'2005S_Stockholm; VTC'2005F_Dallas; WPMC'2005_Aalborg; VTC'2006S_Melbourne; ICC'2006_Istanbul; WCNC'2006_Las_Vegas; ISSSTA'2006_Manaus; VTC'2006F_Montreal; VTC 2007S_Dublin; ICC'2007_Glasgow; IST'2007_Budapest; VTC 2007F_Baltimore; ColCom'2007_Bogota; ICSPC'2007_Dubai; WCNC'2007_Hong-Kong; ICC'2008_Beijing; VTC'2008S_Singapore; WCNC'2008_Las_Vegas; VTC'2008F_Calgary; Globecom'2008_New_Orleans; VTC'2009S_Barcelon; ICC'2009_Dresden; VTC'2009_Anchorage; Globecom'2009_Ha
T8: QoS Provisioning in Intelligent Vehicular Networks
Presented by: Xi Zhang, Texas A&M University, Department of Electrical and Computer Engineering
Intelligent vehicular networks, which aim at enabling the driving-environment awareness, improving the transportation safety systems, and supporting Quality of Service (QoS) networking services among moving vehicles, are the cornerstone of the next-generation Intelligent Transportation Systems (ITS). High mobility of vehicles and unreliable time-varying wireless channels make the implementation of intelligence and QoS provisionings in vehicular networks significantly challenging. In this tutorial, we will address the key issues and challenges, as well as the state-of-the-art theories and techniques for the intelligent vehicular networks. In particular, we start with introducing the concept of ITS and its engineering applications. We then discuss the QoS-driven intelligent vehicular networks including the vehicle-to-vehicle networks and vehicle-to-infrastructure networks. The current state-of-the-art research status in the intelligent vehicular networks, such as DSRC, IEEE 802.11p, and Wireless Access in Vehicular Environments (WAVE), driving-environment-aware clustering-based vehicular networks will be studied. Finally, we will focus on the emerging drive-thru Internet networks that provide the QoS-guaranteed Internet access opportunities to the moving vehicles on the road in a manner of "on the go" and their modeling techniques and performance analyses.
The objective of the tutorial is to bring together leading researchers and practitioners from academia and industry, for an in-depth exchange of ideas in the area of "Intelligent Vehicular Networks".
By supporting the driving-environment awareness, improving the transportation safety systems, and providing QoS networking services among moving vehicles, the intelligent vehicular networks enable the next-generation intelligent transportation systems (ITS).
The fundamental motivation behind intelligent vehicular networks is that the adaptive, reliable, and timely communications among vehicles and between vehicles and road-site-unit (RSU) are the most efficient way to improve the transportation safety and enable the driving-environment agility.
Unlike the traditional wireless networks where most senders and receivers are stable or move at a relatively low speed, the intelligent vehicular networks encounter new challenges due to the stringent QoS requirements of the safety messages and highly mobility of vehicles. This tutorial will present the diverse QoS requirements and their corresponding implementation challenges in the intelligent vehicular networks.
We will introduce the current standards/draft standards, such as DSRC, IEEE 802.11p, and Wireless Access in Vehicular Environments (WAVE), and their QoS performances in the intelligent vehicular networks. Based on our extensive research works, we will present a QoS-guaranteed clustering-based vehicular communication structure for the driving-environment-aware vehicle-to-vehicle communications networks, which combines clustering with contention-free and/or -based medium access control (MAC) protocols. In particular, we will show how to integrate the driving-environment-aware cluster-membership management, inter-cluster communications, intra-cluster coordination and communications schemes under the clustering-based communication architecture to support the QoS provisionings in vehicle-to-vehicle networks.
The intelligent vehicular networks not only enable the vehicles to exchange the heartbeat information to improve the driving safety, but also provide QoS-provisioning Internet access in a manner of "on the go" for the vehicles, which we call the drive-thru Internet services.
We will address the challenges and state-of-the-art research status of the QoS-provisioning drive-thru Internet. We will present the integrated QoS-guaranteed drive-thru Internet service infrastructure which applies the advanced wireless networking techniques, including driving-environment-aware relay communications, wireless networking coding techniques, etc., to guarantee the QoS for the drive-thru Internet services.
- Introduction of the intelligent vehicular networks based the ITS
- Background and key technologies of the ITS
- Wireless communications and networks in ITS
- Intelligent vehicular networks based ITS
- Intelligent vehicular networks
- Overview of the wireless communications and networking techniques in vehicular networks
- QoS requirements of the intelligent vehicular networks
- - Delivery of the safety messages
- - Multimedia data traffic
- - Non-real-time data traffic
- - Driving environment agility
- Current standards for vehicular communications
- - DSRC standard
- - IEEE 802.11p
- - WAVE architecture
- QoS provisionings in vehicle-to-vehicle communications
- - Challenges
- - Clustering-based multi-channel communications architecture
- - Driving-environment-aware cluster-membership management
- - Inter-cluster communications
- - Intra-cluster coordination and communications
- QoS-guaranteed drive-thru Internet
- IEEE 802.11 MAC protocol in drive-thru Internet
- Driving-environment-aware relay communications in drive-thru Internet
- The application of wireless network coding
- Integrated QoS-guaranteed drive-thru Internet service infrastructure
- Conclusions and Future Research Directions
This tutorial is intended for typical VTC attendees, including researchers, engineers, and practitioners in academia (professors and graduate students), industry engineers/managers, and government agencies, as well as the general audiences.
The tutorial is the first of its kind investigating the QoS provisionings in intelligent and driving-environment aware vehicular networks. The focus of this tutorial is on studying/explaining how the driving-environment agility supports the QoS provisionings in intelligent vehicular networks, discussing the implementation challenges, and presenting the state-of-the-art approaches and ongoing research efforts.