| Monday 11 September 2006 | ||||||
| 09:15- 10:45 | Tutorial 1 FD High Speed Downlink / Uplink Packet Access (HSDPA/HSUPA) |
Tutorial 2 FD OFDM – A Flexible and Adaptive Air Interface for a 4G Communication System |
Tutorial 3 FD
(incl. T4 and T5) Theoretical Aspects of Wireless Sensor and Ad Hoc Networks |
Tutorial 6 HD Introduction to Cognitive Radio |
Tutorial 8 HD CANCELLED | |
| 10:45-11:15 Coffee Break | ||||||
| 11:15-12:45 | Tutorial 1 FD High Speed Downlink / Uplink Packet Access (HSDPA/HSUPA) |
Tutorial 2 FD OFDM – A Flexible and Adaptive Air Interface for a 4G Communication System |
Tutorial 3 FD
(incl. T4 and T5) Theoretical Aspects of Wireless Sensor and Ad Hoc Networks |
Tutorial 6 HD Introduction to Cognitive Radio |
Tutorial 8 HD CANCELLED |
|
| 12:45-14:00 Lunch | ||||||
| 14:00-15:30 | Tutorial 1 FD High Speed Downlink / Uplink Packet Access (HSDPA/HSUPA) |
Tutorial 2 FD OFDM – A Flexible and Adaptive Air Interface for a 4G Communication System |
Tutorial 3 FD
(incl. T4 and T5) Theoretical Aspects of Wireless Sensor and Ad Hoc Networks |
Tutorial 7 HD Network Coding |
Tutorial 9 HD Roadmap to Cross-Layer and Cross-System Optimization for B3G |
Tutorial 10 HD WiFi and UWB RF Localization – Principles and Applications |
| 15:30-16:00 Coffee Break | ||||||
| 16:00-17:30 | Tutorial 1 FD High Speed Downlink / Uplink Packet Access (HSDPA/HSUPA) |
Tutorial 2 FD OFDM – A Flexible and Adaptive Air Interface for a 4G Communication System |
Tutorial 3 FD
(incl. T4 and T5) Theoretical Aspects of Wireless Sensor and Ad Hoc Networks |
Tutorial 7 HD Network Coding |
Tutorial 9 HD Roadmap to Cross-Layer and Cross-System Optimization for B3G |
Tutorial 10 HD WiFi and UWB RF Localization – Principles and Applications |
| 18:30 Welcome Reception of the City of Helsinki (Helsinki City Hall, Pohjoisesplanadi 11-13) | ||||||
The tutorial provides a comprehensive and up-to-date information on High Speed Packet Access (HSPA) technologies for WCDMA. High speed downlink packet access (HSDPA) and High speed uplink packet access (HSUPA) are standardized as part of 3GPP Release 5 and 6, and further enhanced in Release 7. HSDPA and HSUPA together are called High speed packet access (HSPA). HSPA is designed on top of WCDMA (Wideband Code Division Multiple Access), the main air interface used for third generation mobile communication systems globally.
The tutorial offers in-depth descriptions and explanations of 3GPP standards, and expected performance based on simulations and measurements. The text also discusses the impact of HSDPA and HSUPA on network dimensioning and network algorithms and covers end-to-end performance aspects.
Further detailed information about HSDPA/HSUPA is available in the book “HSDPA/HSUPA for UMTS – High Speed Radio Access for Mobile Communications”, by John Wiley, published 2006. www.wiley.com
Broadband radio channels are characterised by multipath propagation und mobility. The channel transfer function shows therefore a strong frequency selectivity and time variance. The Orthogonal Frequency Division Multiplexing (OFDM) transmission technique will be used in future mobile communication systems of the fourth generation (4G) due to its high flexibility to adapt the transmit signals onto the current radio channel conditions. The main idea of the OFDM transmission technique is easy to understand. Due to the strong frequency selectivity of all broadband radio channels the total bandwidth is just split into many subbands where each subchannel can be considered as an isolated (orthogonal) narrowband channel, which reduces the computation complexity for modulation and demodulation essentially.
The tutorial starts in the first chapter with the radio channel model because all system design activities for mobile communication systems are strongly dependent on the radio channel behaviour. Chapter 2 gives an overview about the fundamental OFDM transmission technique, the transmit signal calculation, different (adaptive) modulation schemes and the transmit system block diagram. Channel coding and peak-to-average-ratio (PAR) topics will be discussed also.
An important technical topic for coherent demodulation techniques is the channel estimation procedure (Chapter 3) based on pilot signals or alternatively on decision directed estimation schemes. Differential modulation schemes and incoherent detection techniques are discussed also.
Chapter 4 explains some broadcast systems, like Digital Audio Broadcast (DAB) and Digital Terrestrial Video Broadcast (DVB-T), which are based on the OFDM transmission technique. Chapter 5 picks up the important question of synchronization in time and frequency (carrier) domain which is an essential topic for the OFDM transmission technique. For communication systems the question of multiple access techniques is extremely important. Therefore Chapter 6 explains the TDMA, FDMA and CDMA schemes in combination with the OFDM transmission technique. Complete system design including channel coding, channel estimation, synchronisation will be considered for system comparison. Link adaptation techniques and Cross-Layer schemes as well as an introduction of MIMO-OFDM systems in a cellular environment The tutorial will finish with detailed discussion about current standards and some proposals for future 4 G systems. Some OFDM-specific hardware realisation aspects based on a FPGA experimental system will also be discussed.
Sensor networks have been researched and deployed for decades already; their wireless extension, however, has witnessed a tremendous upsurge in recent years. This is mainly attributed to the unprecedented operating conditions of wireless sensor networks (WSNs), i.e. a potentially enormous amount of nodes operating under stringent energy constraints and characterised by strong limitations in terms of processing capabilities and device complexity.
The wireless sensor networks’ virtually infinite degrees of freedom have ignited feverish research activities, having led to thousands of publications, white papers and patents in less than a decade, with new contributions emerging on a daily basis. The rich mathematical and technical toolboxes already available from the design of wireless cellular and ad hoc systems clearly aided the birth of new ideas tailored to the problems in WSNs, although many relevant aspects of WSNs are not common to ad hoc networks, and vice-versa. This makes the design of communication and data processing techniques used in WSNs sometimes very different from the case of ad hoc networks. It is therefore crucial to highlight the differences and commonalities.
The aim of this tutorial is to expose an industrial and academic audience to the challenges related to the analysis, design and deployment of such recently emerged networks at PHY, MAC and network layers - with particular emphasis on cross-layer and cross-functionality optimisation. To this end, the tutorial is conveyed in two mutually harmonised parts: the first part deals with fundamental issues at mainly PHY and MAC layers and presents techniques suitable for both WSNs and ad hoc networks, whereas the second part focuses on MAC and network aspects that are specific to WSNs.
In more details, the first part of the tutorial, ranging from channel modelling, capacity analysis, code and transcoder design, resource allocation and scheduling within distributed collaborative networks, proves vital in conveying the most essential issues relating to the design of energy efficient WSNs. It is structured into several parts, i.e. application scenarios and differences to ad hoc networks, historical background, channel models, information theoretical bounds, cooperative and distributed transceiver structures, medium access control and elements of cross-layer design.
The second part of the tutorial will provide a survey of the theoretical background needed to address issues of connectivity, coverage and network lifetime for wireless sensor and actuator networks, which will be corroborated by case studies.
The Authors of this tutorial are involved in the CRUISE NoE IST Project (CReating Ubiquitous Intelligent Sensing Environments).
The aim of this tutorial is to expose an industrial and academic audience to the challenges related to the analysis, design and deployment of such recently emerged networks at PHY, MAC and network layers - with particular emphasis on cross-layer and cross-functionality optimisation.
The first part deals with fundamental issues at mainly PHY and MAC layers and presents techniques suitable for both WSNs and ad hoc networks. In more detail, the tutorial, ranging from channel modelling, capacity analysis, code and transcoder design, resource allocation and scheduling within distributed collaborative networks, proves vital in conveying the most essential issues relating to the design of energy efficient WSNs. It is structured into several parts, i.e. application scenarios and differences to ad hoc networks, historical background, channel models, information theoretical bounds, cooperative and distributed transceiver structures, medium access control and elements of cross-layer design.
The aim of this tutorial is to expose an industrial and academic audience to the challenges related to the analysis, design and deployment of such recently emerged networks at PHY, MAC and network layers - with particular emphasis on cross-layer and cross-functionality optimisation.
The second part focuses on MAC and network aspects that are specific to WSNs. In more detail, the tutorial will provide a survey of the theoretical background needed to address issues of connectivity, coverage and network lifetime for wireless sensor and actuator networks, which will be corroborated by case studies.
Cognitive radio (CR) shows many facets. It has some knowledge as well as some awareness that is stored in data bases and may be retrieved and used when needed. Of course, the acquisition, the storage, the retrieval and the interpretation of knowledge are interesting processes, but they are not to be discussed in this tutorial. What is of interest here is how CRs can help to overcome communications engineering problems. The most prominent of these problems is to cope with the complicated mobile radio channels in order to make efficient use of the scarce frequency resources. This tutorial discusses how CRs may be employed in dynamic spectrum sharing. Since CRs are build on software defined radios (SDRs) this technology is reviewed too from a commercial as well as from a military point of view. A realistic projection of future CR applications in communications engineering is given.
This half-day tutorial provides an overview of the rapidly growing field of network coding. Network coding generalizes network operation beyond the traditional forwarding or replication of information, allowing network nodes to perform coding operations on information from different streams. Many interesting properties and potential benefits of network coding have been demonstrated in various aspects of networking. The tutorial will discuss a number of these benefits: achieving capacity, distributed transmission and compression of data, robustness to link failures and packet losses, and security against modification of information by compromised nodes. It will also cover network code construction techniques for multicast, multiple unicasts and wireless networks.
Emerging Internet Quality of Service (QoS) mechanisms are expected to enable wide spread use of real time services such as VoIP and videoconferencing. The "best effort" Internet delivery cannot be used for the new multimedia applications. New technologies and new standards are necessary to offer Quality of Service (QoS) for these multimedia applications. Therefore new communication architectures integrate mechanisms allowing guaranteed QoS services as well as high rate communications.
The service level agreement with a mobile Internet user is hard to satisfy, since there may not be enough resources available in some parts of the network the mobile user is moving into. The emerging Internet QoS architectures, differentiated services and integrated services, do not consider user mobility. QoS mechanisms enforce a differentiated sharing of bandwidth among services and users. Thus, there must be mechanisms available to identify traffic flows with different QoS parameters, and to make it possible to charge the users based on requested quality. The integration of fixed and mobile wireless access into IP networks presents a cost effective and efficient way to provide seamless end-to-end connectivity and ubiquitous access in a market where the demand for mobile Internet services has grown rapidly and predicted to generate billions of dollars in revenue. This tutorial covers to the issues of QoS provisioning in heterogeneous networks and Internet access over future wireless networks as well as ATM, MPLS, DiffServ, IntServ frameworks. It discusses the characteristics of the Internet, mobility and QoS provisioning in wireless and mobile IP networks. This tutorial also covers routing, security, baseline architecture of the inter-networking protocols and end to end traffic management issues.
The beyond 3G vision constitutes in a diverse wireless networking world of “network-of-wireless-networks” accommodating a variety of radio technologies and mobile service requirements in a seamless manner. The achievement of this vision raises significant research challenges in view of system coexistence; system scale; network robustness requirements; and evaluation tools design and modeling. The key objectives of this tutorial are in part motivated by the importance of cross-layer interactions, in order to efficiently use the radio resource space in wireless networks, and in part by the vision of the integration of heterogeneous wireless technologies providing new wideband services running over flexible QoS-enabled IP based access and core networks. This tutorial brings into the foreground a broad range of research results on cross-system and cross-layer optimization algorithms taking into account issues related to usage behavior, mobility patterns, traffic profiling, QoS issues, security, network selection and relevant horizontal/vertical handovers. Specifically, the tutorial will address:
In the mid-1990s, motivated by a variety of envisioned applications in commercial, public safety, and military settings, precision RF localization in indoor and urban areas, where GPS fails to operate properly, started to attract considerable attention. DARPA started the SUO/SAS project for implementation of situation aware systems in urban and indoor areas and venture capital firms funded companies such as PinPoint to design commercial indoor geolocation systems in ISM bands. The range of commercial applications for this industry is diversified and innovative. In residences and nursing homes, for example, there is an increasing need for precise indoor location-sensing systems to track people with special needs, the elderly, and children who are away from visual supervision. Other applications include systems to assist the sight-impaired, to locate instrumentation and other equipment in hospitals, to locate surgical equipment in an operating room, and to locate specific items in warehouses. In public safety and military applications, precise indoor location sensing systems are needed to track inmates in prisons and to guide policemen, fire-fighters, and soldiers in accomplishing their missions inside buildings More recently, location sensing has found applications in location-based handoffs in wireless networks, location-based ad-hoc network routing, and location-based authentication and security. Sever multipath conditions in indoor and dense urban areas cause undetected direct path conditions which pose a serious challenge to precise indoor geolocation. This and other technical challenges have stimulated interest in modeling the propagation environment to assess the accuracy of different location sensing techniques, as well as in developing novel localization algorithms to implement the systems. In the industry, we have already seen implementation of the first generation of indoor and urban positioning products using a variety of technologies. In the early 2000s WiFi localization for indoor applications became popular and startup companies such as Ekahau, PanGo and Newbury Networks emerged in that domain. Around 2003 UWB localization for WPANs attracted attention for those companies engaged in the IEEE 802.15.3a standardization activities, and military organizations such as ARL supported small companies such as IWT and MSSI to adopt these technologies to military setting. In 2005 outdoor WiFi localization, as a software equivalent of the GPS technology which can potentially work everywhere, appeared in the commerce in venture funded companies such as Skyhook; and DARPA initiated research programs to use all the signals of opportunity for localization in urban and indoor environments. To help the growth of this emerging industry to achieve high precision localization everywhere, there is a need to develop a scientific framework and foundation for design and performance evaluation of such systems. This short course provides an insight into the growing market forces in RF localization, technical challenges for implementation of precise urban and indoor geolocation systems, and describes the research needs in understanding the physical limits of the channel and design of algorithms to overcome these challenges in the future. The emphasis of the course is on the emerging markets and technical challenges for WiFi and UWB localization.
More information on practical arrangements: pimrc2006
ee.oulu.fi
