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Tutorial
program
Tutorials will be held on February 24th,
2004. There are scheduled 4 tutorials of 3 hours divided in two
tracks (moorning and afternoon track). The scheduling for the tutorials
is the following:
Moorning (10:00 to 13:30):
- Tutorial 1: QoS and Radio
Resource Management in UTRA
- Tutorial 2: Technology Developments
in Software Defined Radio for Mobile Communications
Afternoon (15:00 to 18:30):
- Tutorial 3:
Joint physical and network layer optimisation of wireless systems: smart
antennas, turbo coding, space-time coding, adaptative transceivers and
"all that" for improved QoS
- Tutorial 4: Wireless IP
Tutorials will take place at UPC Campus Nord, building C6 E101
(tutorials 1 and 4) and building D6 S103 (tutorials 2 and 3). See the
maps of the UPC Campus Nord: Map 1 or
Map 2.
Conference attendees wishing to attend tutorials will find all
the relevant tutorial registration information in the Conference and Tutorial
Registration link.
QoS and Radio Resource Management
in UTRA
The evolution of the end user needs towards
multimedia applications has pushed the wireless community to conceive
the so called third generation (3G), where a very large amount of both
circuit switched services and packet switched services for voice and data,
at different bit rates and with a broad range of different QoS requirements,
will be provided. In this context, the definition and assessment of suitable
Radio Resource Management (RRM) strategies for the UTRA segment of UMTS
is a key issue for achieving the expectations created on 3G technology.
RRM functionalities are very important in the framework of 3G systems because
the system relies on them to guarantee a certain target QoS, to maintain
the planned coverage area and to offer a high capacity. Moreover, RRM functions
can be implemented in many different ways, this having an impact on the
overall system efficiency and on the operator infrastructure cost, so that
definitively RRM strategies will play an important role in a mature UMTS
scenario. Additionally, RRM strategies are not subject of standardisation,
so that they can be a differentiation issue among equipment producers and
operators.
Dr. Oriol Sallent Roig
Dr. Oriol Sallent is Associate Professor at the Technical University
of Catalonia (UPC). His research interests are in the field of mobile communication
systems, especially packet radio techniques, spread-spectrum systems,
radio resource and QoS management. He has published many papers on these
topics in IEEE journals and conferences. He has participated in many research
projects and consultancies funded by either public organisations or private
companies. Regarding RRM in 3G systems, he has participated in the IST
ARROWS project as well as in a UMTS-RRM project for a spanish operator.
He received the Doctorate Award from the Telecommunication Engineer Association
of Spain in 1997 for his Ph.D. dissertation on multiple access protocols
for CDMA-based systems.
Technology Developments in Software
Defined Radio for Mobile Communications
Dr. Walter Tuttlebee
Virtual Centre of excellence in Mobile & Personal Communications,
Mobile VCE
http://www.mobilevce.com
When first mooted Software Radio was envisaged as a D/A converter at
the antenna, with all signal processing then done in software. For
personal communications at least such idealistic concepts have been superceded
by pragmatic realities, and the recognition that reconfiguration at the top
of the protocol stack is easier than at the bottom, and can yield sooner
financial returns.
Software defined radio is however beginning to impact the commercial
world of cellular radio, in two ways. Firstly, completely new architectures
and approaches are being introduced by new market entrants, who see the
complex processing requirements and transition to 3G as opening a window
of opportunity. Meanwhile, the established baseband processing technologies
of existing handset and basestation semiconductor manufacturers are evolving
to respond to this threat, in various ways. Somewhat perversely, delays
in 3G rollout are creating opportunities for SDR. Firstly, the delays
are providing more time for the new technologies' development. Secondly, the
uncertainty over service and traffic mix for commercial 3G networks is conspiring
to create a demand for flexible solutions, to permit easy basestation evolution
and reconfiguration. This tutorial will intoruduce the background concepts
and origins of software radio, will review the main technology developments
emerging and will also describe the importance of network-handset interactions
and terminal management.
Dr. Walter Tuttlebee
Dr. Walter Tuttlebee is Executive Director of Mobile VCE, and is based
at Basingstoke in the UK. His activities in Software Radio date from the
1990s when he was a lead invited speaker from Europe at the first workshop
on Software Radio organised by the European Commission in 1997, alongside
the US speakers from the MMITS Forum (since renamed the SDR Forum).
In his present role he was responsible for establishing the MoU between Mobile
VCE and the SDR Forum and for organising an International Round Table on
SDR for Spectrum Regulators held in autumn 2003. He is editor of the
Wiley book series on Software Defined Radio, having edited 3 of the 4 volumes
already published. He holds BSC (Hons), PhD and MBA degrees and is
a Fellow of the IEE and a Senior Member of the IEEE.
Joint
physical and network layer optimisation of wireless systems: smart
antennas, turbo coding, space-time coding, adaptative transceivers
and "all that" for improved QoS
This overview is based on an amalgam of
the Wiley/IEEE Press monographs [1]-[5].
The short course provides an insight into the effects of turbo-coded,
turbo-equalised and space-time coded adaptive TDMA, CDMA and OFDM transceivers
as well as smart antennas and a range of other efficient networking techniques
on the achievable teletraffic capacity of adaptive wireless systems.
This research-oriented presentation considers the joint benefits
of both adaptive physical and adaptive network-layer performance enhancement
techniques. More specifically, conventional systems would drop a call
in progress, if the communications quality falls below the target QoS
and it cannot be improved by handing over to another physical channel. By
contrast, the adaptive transceivers of the near future are expected to
simply "instantaneously drop the throughput, rather than dropping the call"
by reconfiguring themselves in a more robust mode of operation. It is
demostrated that the proposed beam-forming and adaptive transmission techniques
may double the expected teletraffic capacity of the system, whilst maintining
the same AVERAGE performance as their conventional fixed-mode counterparts.
Whilst this overview is ambitious in terms of providing a research-oriented
outlook, potential attendees require only a modest background in wireless
communications. Network operators, service providers, managers and
researchers embarking on the joint optimization of the physical and
network layer may find the coverage of the presentation beneficial.
The participants will receive a set of slides as supporting material.
During his 27-year carreer he has held various academic and research
positions in Hungary, Germany and the UK. Since 1986 he has been with
the University of Southampton, where he holds the Chair of Telecommunications.
Over the years he has co-authored 10 books on mobile radio communications,
published in excess of 450 research papers and has been awarded a number
of distinctions. He is an IEEE Distinguished Lecturer. For further
information on research in progress and for associated papers and book
chapters please refer to http://www-mobile.ecs.soton.ac.uk
Wireless IP
Prof. Hamid Aghvami
Director of Centre for Telecommunications Research, King's College London
For the design of next generation wireless networks
two different approaches are currently being considered. They are:
- Interworking with next generation Internet (tight coupling)
- Integration within next generation Internet (very tight
coupling)
In the first approach, the access network and the core network use different
IP protocols and mechanisms and only the core network is considered
as a sub-network of the Internet. In the second approach, both the core
and access networks use common IP based protocols and mechanisms and the
access network is considered as a sub-network of the Internet
The tutorial will describe these approaches and discuss their suitability
in supporting future heterogeneous wireless access environment and their
benefits to the operators. The challenges of providing IP-based multi-media
services with end-to-end QoS guarantee in future IP-based core and wireless
access networks will also be discussed. The issues, which will be discussed,
are as follow:
- Efficient, flexible and scalable architectures.
- Degree of coupling between radio access networks (open,
loose and tight).
- Mobility management (macro-and micro mobility).
- QoS in core and access networks.
- QoS routing.
- Over-provisioning versus QoS mechanisms in core networks.
Prof. Hamid Aghvami
Hamid Aghvami joined the academic staff at King’s in 1984. In 1989 he
was promoted to Reader and Professor in Telecommunications Engineering
in 1992. He is presently the Director of the Centre for Telecommunications
Research at King’s. Professor Aghvami carries out consulting work
on Digital Radio Communications Systems for both British and International
companies. He has published over 300 technical papers and given invited
talks all over the world on various aspects of Personal and Mobile
Radio Communications as well as giving courses on the subject world
wide. He was Visiting Professor at NTT Radio Communication Systems
Laboratories in 1990 and Senior Research Fellow at BT Laboratories
in 1998-1999. He is currently Executive Advisor to Wireless Facilities
Inc., USA and Managing Director of Wireless Multimedia Communications
LTD (his own consultancy company). He leads an active research
team working on numerous mobile and personal communications projects
for third and fourth generation systems, these projects are supported
both by the government and industry. He is a distinguished lecturer
and a member of the Board of Governors of the IEEE Communications
Society. He has been member, Chairman, Vice-Chairman of the technical
programme and organising committees of a large number of international
conferences. He is also founder of the International Conference on
Personal Indoor and Mobile Radio Communications (PIMRC). He is a fellow
of the Royal Academy of Engineering, fellow member of the IEE and
senior member of the IEEE.
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