Transcript Some results - FuturICT 2009

Research and innovation on mobile
infocommunications at BME
Prof. Dr. László Pap
Department of Telecommunications,
Faculty of Electrical Engineering and
Informatics, BME
Budapest
June 29-30, 2009
Content of the presentation








Introduction
Methods of research organization
The role of the staff members and the students
Research areas in mobile infocommunication
systems
Research areas of the Mobile Communication
and Computing Laboratory
Some results (examples)
 Multi-user detection
 Interference analysis in FH channels
 Interference analysis in multi-user channels
 Call admission control
Local partners, international relations
Mobile Communication Research &
Development Centre and Innovation Centrum
June 29-30 2009.
Hungarian-Japanese Conference
2
Introduction
Traditional mission of a university
• Based on strong primary training
 High quality education on wide-base
professional areas
 High level research and development
 Elite-training
 Flexible curricula based on the demand of the
industry and the society
• Harmony between the theory and practice
 Practical education based on high level
theoretical background and industrial
relationships
June 29-30 2009.
Hungarian-Japanese Conference
3
Introduction
Global change of the role of the
traditional universities
 New effects in the development of the
traditional universities
 Increasing number of students
 Diversification of the content of the curricula
 Life-long education
 Competition of the universities
 New information technologies
 New quality measures
 New cooperation methods with the industry
 Fast changes in the content of the curricula
June 29-30 2009.
Hungarian-Japanese Conference
4
Introduction
New directions in the development of
the universities
 New directions
 Professional management
 New financing strategies
 The diversification of the financing resources
 General change of the evaluation system
 New measures of the quality
 New role of the public strategy of the
universities
 New structure of the industrial cooperation
 Professional business plans of the
universities
June 29-30 2009.
Hungarian-Japanese Conference
5
Introduction
Recommendation of the OECD
 The new strategy must cover the following
items:





Regional development of the industry
Cooperation strategy with the local industry
Incubation program
Fund raising program
Participation in local and national economical
development
 Innovation strategy
 The OECD recommends to increase the role of
the high education in the regional development
June 29-30 2009.
Hungarian-Japanese Conference
6
Introduction
The importance of utilization of the
R&D results
• Obtaining new financial resources by
using the intellectual products, raising the
prestige of the University
• Large value added content of the products:
increasing the competitiveness of the
economy
• Developing qualified new jobs at the
industry
June 29-30 2009.
Hungarian-Japanese Conference
7
Introduction our research
group
 Mobile Communication and Computing
Laboratory
 Research and teaching of mobile communication
technologies
 2 professors, 1 associate professors, 3 assistant
professor, 5 post doctors
 25 PhD students, cc. 100 undergraduate students
 12 research areas
 General research topics: digital signal processing,
mobile communication, mobile computing,
mobile IP, network simulation, neural networks,
professional mobile radio systems, software radio,
wireless LAN, 3G mobile systems, B3G mobile
systems (LTE), near field technologies
June 29-30 2009.
Hungarian-Japanese Conference
8
The role of the staff members and the
students
 Staff members
 Realization of the projects
 Consultation of the undergraduate and PhD
students
 Common publications with the students
 Organisation of the projects and the activity
 PhD and undergraduate students
 Active participation in the research projects
 Participation in the Students' Scholarly Circles
 Special tasks of the PhD students (research,
publication, consulting the undergraduate
students, participation in projects, etc.)
 Practice in the industrial companies
June 29-30 2009.
Hungarian-Japanese Conference
13
Financing of the research
 Financial resources
Internal resources of the University
National research funds
National industrial support
National industrial projects
Support of the Hungarian Academy of Sciences for
basic research
EU research programs
Projects supported by the inter- and multinational
industrial partners
Resources of bilateral co-operations
Other national and local resources
June 29-30 2009.
Hungarian-Japanese Conference
14
Some results (example 1.)
 Multi-user detection (G. Jeney, SV: L. Pap)
– Stochastic recurrent neural networks for quadratic optimisation
– Results:
• A multi-stage non-linear detector for multi-user
communication system described by
where R is the discrete-time channel matrix, y is the received
signal and n is the coloured noise vector, and where C is the
covariance matrix of the noise
June 29-30 2009.
Hungarian-Japanese Conference
21
Some results (example 1.)
 Multi-user detection(G. Jeney, SV: L.
Pap)(cont.)
It is equivalent to a stochastic recurrent neural network
where  is a stochastic signal vector
June 29-30 2009.
Hungarian-Japanese Conference
22
Some results (example 1.)
 Multi-user detection(G. Jeney, L. Pap)(cont.)
if
• If the distribution of the stochastic signal in the stochastic
neural network has a logistic distribution
or complex logistic distribution, the global optimum state will
have the greatest probability (in BPSK and QPSK systems)
• If the  parameter of the logistic distribution goes to infinity
(annealing) the global optimum will have 1 probability
• Other solutions (simplification of the neural network, using
neurones with hysteresis, blind learning algorithms, soft
decision function, soft feedback)
June 29-30 2009.
Hungarian-Japanese Conference
23
Some results (example 1.)
 Multi-user detection (G. Jeney, SV:L.
Pap)(cont.)
• Simulation results
Binary DS-CDMA systems with random code words of
length 100 serving 100 users
June 29-30 2009.
Hungarian-Japanese Conference
24
Some results (example 1.)
 Multi-user detection (G. Jeney, SV:L.
Pap)(cont.)
• Simulation results
QPSK DS-CDMA systems with random code words of length
100 serving 100 users
June 29-30 2009.
Hungarian-Japanese Conference
25
Some results (example 2.)
 Interference analysis in FH channels
(K. Hamdi - L. Pap)
– New analytical performance analysis of slow frequency
hopped spread spectrum multiple access (FHSS-MA)
networks with non-orthogonal binary frequency shift keying
(BFSK) and having arbitrary spacing between the hopping
carriers
– Results:
• A multiple access FH communication system with
signalling and correlation factor
where f is the BFSK modulation frequency
June 29-30 2009.
Hungarian-Japanese Conference
26
Some results (example 2.)
 Interference analysis in FH channels
(K. Hamdi - L. Pap)(cont.)
• Non-coherent receiver with decision parameters
and the binary decision is made by deciding which of |R0|
and |R1| is larger
• In the case of orthogonal |R0| and |R1| the classical
method can be used as
where x(.) is the characteristic functions of |R0| and |R1|
June 29-30 2009.
Hungarian-Japanese Conference
27
Some results (example 2.)
 Interference analysis in FH channels
(K. Hamdi - L. Pap)(cont.)
• New analysis method with transformation
and the binary decision is made by
where  is the angle between r1 and r2
• The calculation of the bit error probability is based on
Pawula’s method as
June 29-30 2009.
Hungarian-Japanese Conference
28
Some results (example 2.)
 Interference analysis in FH channels
(K. Hamdi - L. Pap)(cont.)
where
• Interference analysis, in fading channels (Rayleigh,
Rice,Nakagami), where K interfering users exist with
different modulation techniques, k frequency offset and
different faded channels, closed formula for average error
probability, calculation of the spectral efficiency,
numerical results
June 29-30 2009.
Hungarian-Japanese Conference
29
Some results (example 2.)
Interference analysis in FH channels
(K. Hamdi - L. Pap)(cont.)
Average SER against the frequency offset fk - f0 for orthogonal
BFSK and 4FSK ( = 1) in the presence of a single Rayleigh faded
CW2009.
interferers having
R(τ) = 1, EbConference
/N0= 10 dB, SIR = 3 dB.
June 29-30
Hungarian-Japanese
30
Some results (example 2.)
Interference analysis in FH channels
(K. Hamdi - L. Pap)(cont.)
10
-3
BER
10
2
R()=exp(- )
R()=tr()
R()=J0(2vm)
simulation
-2
10
10
-4
-5
0
1
2
3
(fk - f0)Tb
The case of CW interferers having exponential, triangular, and Bessel
autocorrelation functions. Average BER against the frequency offset fk - f0
for non-orthogonal BFSK. Eb/N0= 13 dB, and SIR = 7 dB.
June 29-30 2009.
Hungarian-Japanese Conference
31
Some results (example 2.)
Interference analysis in FH channels
(K. Hamdi - L. Pap)(cont.)
Average BER of unfaded orthogonal BFSK against the average number of
active interferers per unit area, in the case of a large number of DSSS
interferers that are distributed in the whole space excluding a protection
zone of radius D0  {0,Hungarian-Japanese
0.1, 0.5, 1, 2} around
the victim receiver. Eb/N0 = 32
10
June 29-30 2009.
Conference
dB, WTb = 100.
Mobile Innovation Center (MIK)
 Main objectives of the MIK
– Supports research and development of high speed
mobile communication technologies including new
technology directions, beyond of third generation
mobile systems (B3G)
– Supports introduction of 3G/4G mobile technologies
and services, installation of systems and applications
based on such technologies, as well as their testing in
an independent environment
– Stimulates establishment, development and application
in practice of the newest mobile and wireless
communication technologies/services
– Provides experimental field to universities and
industrial companies, small- and medium size
enterprises for close research-development co-operation
June 29-30 2009.
Hungarian-Japanese Conference
49
Mobile Innovation Center (MIK)
 Members of the consortium
– BME – Departments of Telecommunications (coordination)
– BME – Four other departments
– ELTE – Department of Operations Research
– PPKE – Faculty of Information Technology
– Ericsson Hungary Ltd.
– Nokia-Siemens Networks
– Pannon
– Siemens PSE Program and System Developing Ltd.
– Sun Microsystems Ltd.
– Research Institute of Computer Techniques and
Automation
– Magyar Telekom Nyrt.
June 29-30 2009.
Hungarian-Japanese Conference
50
Mobile Innovation Center (MIK)
 Strategy, vision
– The MIK is an institution built up on the basis on
university knowledge and the existing industrial
background
– Dealing with research and development of wireless
communication technology of the future (3G/4G)
– Has up-to-date wireless communication environment
and testbed for development and testing of the newest
mobile applications
– Strives for becoming a regional research and
development centre in Hungary in its field of
profession, and to stimulate settling of international
“high-tech” companies to invest capital in our country.
Thus, the Centre contributes to general improvement of
technology level of the country, creation of new jobs
June 29-30 2009.
Hungarian-Japanese Conference
51
Mobile Innovation Center (MIK)
 Long term tasks of the MIK
– Geographical concentration of material and intellectual
resources
– Wide involvement of university and Ph.D. students into
research and development, creation of new jobs,
employment of young researchers
– Speed up of know-how and technology transfer.
– Realisation of innovation environment applicable for
co-operation between; development of technologies,
services, methods and their testing
– Providing assistance to small- and medium size
enterprises of the region, incubation of foundation and
operation of knowledge and technology intensive
beginner („start-up”) and applying („spin-off”)
enterprises
June 29-30 2009.
Hungarian-Japanese Conference
52
Mobile Innovation Center (MIK)
 Tasks
– Build up a flexible, heterogeneous testbed for B3G system
• „Multi-vendor”, „multi-operator” network architecture
• Connection to public wired and wireless networks
– Research and Development, Testing
• 3G/4G applications
• Involve of PhD students and young scientists
• Participation/initialisation in EU IST projects
• Open up of the network infrastructure for national and
international companies for developing and testing
their applications in a „real world” environment
June 29-30 2009.
Hungarian-Japanese Conference
53
Mobile Innovation Center (MIK)
 Professional program
– Mobile Radio Technologies
• Coexistence of mobile radio systems, radio channels
• Improving quality of the radio transmission
– Integration and Management of Heterogeneous
Mobile Networks
•
•
•
•
•
Integration and of heterogeneous wired and wireless networks
Traffic modelling, network design and scaling
Safety and accounting problems of mobile systems
Real time multimedia information transfer
Elaboration of cohesive infrastructures for 3G and B3G systems
– Development of Mobile Services and Applications
• Development of mobile applications
• Studies on user’s behaviour
• Development of telecommunication service models, formation of
common platform
June 29-30 2009.
Hungarian-Japanese Conference
54
Mobile Innovation Center (MIK)
June 29-30 2009.
Hungarian-Japanese Conference
55
MIK
Professional program (1.)
 Coexistence of mobile radio systems,
investigation of radio channels
 Investigation of potentials of radio coexistence/co-operation of
various mobile technologies (UMTS, WLAN, Bluetooth, 4.
generation systems) and studies on questions essential to this
radio channel modeling
 Main task of the project is to define those network arrangements
in case of which the mutual or one sided interference can appear.
Apart of that based on measurements we elaborate such models
by means of which inter-effect of various mobile technologies
can be planned. We wish to take into account also the effects of
other, non mobile, but broadcasting technologies (e.g. radar). In
view of realization of access network modeling of the behavior of
the radio technology, elaboration of electromagnetic field
calculations, furthermore the possibly more exact knowledge of
wave propagation features seem to be important for the cell
design
June 29-30 2009.
Hungarian-Japanese Conference
56
MIK
Professional program (2.)
 Improving quality of the radio transmission
 Goal of the project is research, development and implementation
of techniques which enable increase efficiency of radio data
transmission. The activities cover among others intelligent
antenna systems, investigation of wave forms of radio interface
and B3G detection techniques
 Defense against adverse phenomena affecting propagation of
radio waves and aimed to parlay of these effects methods have a
great significance in view of broadband, economically effective
and environment saving radio data transmission. The various
diversity methods, multi input, multi output (MIMO) techniques,
applicable adaptive modulation method, error correction coding
and use of adaptive antennas enhances the reliability and the
achievable speed and can reduce adverse effect of networks on
the environment e.g. use of the radio station of less power
June 29-30 2009.
Hungarian-Japanese Conference
57
MIK
Professional program (3.)
 Integration and of heterogeneous wired and
wireless networks
 Main goal of the project is exploring integration potentials of
heterogeneous info-communication systems. Within this we
focus on connection of wired and wireless systems, and the
infrastructure and ad hoc mobile networks acting into account
call transfer in heterogeneous mobile networks
 Based on NGN concept we will study what protocols can be
integrated into one common backbone network. Covered by
sensor networks areas can be considered as an „intelligent
environment”. Seamless data transfer in heterogeneous mobile
systems. For optimization of the call transfer in the networks
stochastic delay models should also be elaborated. This task is
motivated by the fact that handover can degrade the QoS
parameters. Interworking of different network protocols should
also be realized
June 29-30 2009.
Hungarian-Japanese Conference
58
MIK
Professional program (4.)
 Traffic modeling, network design and scaling
 Goal of the project is modeling of types of traffic appearing in
mobile environment, having this investigation of scaling and
design related questions of networks
 Fundamental tool for scaling and control of mobile networks is
the modeling of network traffic, of which conclusions can be
drawn for the real situations. In heterogeneous mobile systems
modified variants of traditional traffic models should be applied.
In this field the following questions should be studied: traffic
and queuing of mobile networks, algorithms of collision
resolution, schedule protocols for support of real time traffic, call
admission algorithms, investigation of transport (e.g. TCP)
protocol in mobile environment, models of aggregate traffic
between wired-wireless, as well as wireless-wireless networks.
Subject of the project is elaboration of a P2P system which, is
able to discover different network services in dynamic
communication environment
June 29-30 2009.
Hungarian-Japanese Conference
59
MIK
Professional program (5.)
 Safety and accounting problems of mobile
systems
 One of the goals of the research is survey of security
requirements of heterogeneous mobile technologies, analyses of
efficiency of existing solutions and development of new security
solutions and their implementation. Another well fitted area is
the development and implementation of charging architecture
and methods meeting requirements of the communication
market of many actors
 The project's attempt is to study mechanisms of authorisation,
key distribution and dynamic key change also in such an
environment, where great number of users freely come in or
leave the system. Besides the copyrights of authors of digital
contents should be defended (Digital Right Management
(DRM)). According to newest OSA concept the content and
network service shall be separated. As a consequence for the
user, the operator, the content provider and the authorities need
adequate and real-time accounting
June 29-30 2009.
Hungarian-Japanese Conference
60
MIK
Professional program (6.)
 Real time multimedia information transfer
 Investigation of procedures meeting service quality requirements
(QoS) in case of real time data transfer, including inter point-topoint and point-to-multi point QoS investigations as well
 Studies on QoS support in heterogeneous mobile network
environment and in mixed packet and line switched mobile
communication networks are of high importance. One of our
target tasks is to set up a real time network radio system,
supports radio transfer of video, audio and enriched occasionally
by text or facsimile for the public of many people. Our other goal
is to build up of such a system which enables real time demand
of stored contents (Video on Demand). In both cases important
element of the service is securing the quality of the transferred
content. Therefore we shall study how the representation of
audio and video contents can be optimized
June 29-30 2009.
Hungarian-Japanese Conference
61
MIK
Professional program (7.)
 Elaboration of cohesive infrastructures for
3G and B3G systems
 Goals of the project are enhancement, research and development
of cohesive infrastructure determining in view of
telecommunication infrastructure elements, which provide
harmony between requirements and possibilities in the area
against confidentiality and authority in IP technology, B3G
systems and telephone public branch exchange
 Goals of the project are basically of two directions:
 Development and investigation of AAI - Authentication and
Authorisation Infrastructure (AAI) for 3G and B3G systems.
 Fitting of IP based telephone public branch exchanges to 3G
and B3G systems
June 29-30 2009.
Hungarian-Japanese Conference
62
MIK
Professional program (8.)
 Development of mobile applications,
investigation of application development
and content handling solutions
 Development of supporting community and commerce services
mobile applications, furthermore investigation of software
technologies needed for development of these applications.
Introduction of the mobile communication technique and its
integration into monitoring, remote checking and diagnosis of
industrial objects. Further part task is establishment of content
development infrastructure for testbed and application
development
 Within the project applications are also needed: for approval of
testbed, simulation of real traffic situations, investigation of
realistic application related problems. We investigate the
infrastructure which includes content handling and enables
flexible, manifold, multilevel application development (e.g.
OSA/Parlay). We pay attention freely programmable operation
system (Symbian, MS Smartphone, Linux, etc.) too
June 29-30 2009.
Hungarian-Japanese Conference
63
MIK
Professional program (8.)
 Development of mobile applications,
investigation of application development
and content handling solutions (cont.)
 Potentials of integration of mobile techniques by network
solutions applied in the process control in the various branches
of the industry enables monitoring of the already built in data
flow. (e.g. energy substations operated without human
supervising, divided type field equipment, tube networks,
pumps, boilers, wind power stations, transformers, vessels, wind
power stations' parks). The GPS/mobile communication
technique built on measuring and control systems of mobile
objects (vehicles) shall be completed with assignment to location
of diagnostic results (e.g. in diagnostics of railway sections,
follow up of transporting hazardous waste vehicles, construction
of questionable tachographs it serves safety purposes). In the
project integration of mobile tools and process control systems;
development of intelligent monitoring and diagnostic functions
shall be solved.
June 29-30 2009.
Hungarian-Japanese Conference
64
MIK
Professional program (8.)
 Development of mobile applications,
investigation of application development
and content handling solutions (cont.)
 The content infrastructure standing behind the valuable for the
user applications is the part of new but identifiable individually
part of the entire infrastructure. Elements of content
infrastructure are among others data and procedures serving for
identification of partners and resources (address stores, name
fields etc.); catalogues assisting orientation in data stores, meta
databases (standard data, coded into structure semantic
information, data organized in hierarchy or nets, meta-data
structures of a content infrastructure make possible search able
and coherent on application level the contents); security and
confidentiality resources (such is the infrastructure of
certifications, digital signature and other authorization
procedures, white and black lists of reliable and non-reliable
sources, for example for spam-filtering, other data of authorized
locations, virus databases etc.)
June 29-30 2009.
Hungarian-Japanese Conference
65
MIK
Professional program (8.)
 Development of mobile applications,
investigation of application development
and content handling solutions (cont.)
 Application - distribution strategy of the future shall be of multiplatform like (Cross-media publishing, Create once, publish
everywhere). Obvious test application areas: education and
certain payable student services, part of which serves elaboration
of broadcasting and interactive multimedia possibilities in
experimental way and their demonstration (applications enabling
mobile access to information network of the university e.g.
„wireless room", wireless student administration, depending on
location connected to university area services, broadcasting and
archiving of lectures). The artificial speech functions are also
included into access techniques (e.g. automatic text read out,
control by speech, speech recognition etc.), which enables also
integration of handicapped people into the information society
June 29-30 2009.
Hungarian-Japanese Conference
66
MIK
Professional program (9.)
 Studies on user’s behaviour
 Preliminary goal of the project is wide investigation of user's
behaviour and use of results in other projects of the Centre.
 Spread of various mobile technologies affects and changes
behaviour of users. The Internet and the next generation mobile
technologies have been bringing unimaginable before
applications and services, these will affect significantly
behaviour of the users, again. Behaviour of individual users is
different, but contain similar elements too on daily, weekly or
even yearly level, which can be shown up by appropriate
methods (e.g. sociological, network analyses, multivariable
statistical and data mining methods). Knowledge of these
behaviour samples promotes identification of various user
groups and providing suitable for them electronic services and
required content, prediction of expected acceptance of new
applications. Handling of more and more complicate end
equipment can be provided only by adequate multimodal user
surfaces.
June 29-30 2009.
Hungarian-Japanese Conference
67
MIK
Professional program (10.)
 Development of telecommunication service
models, formation of common platform
 Goals of the project are support of realizing software for
infocommunication services and intelligent mobile functions
based on visual modeling languages with use of generative
techniques, and establishment of uniform software platform for
various mobile software systems
 Tasks of the project are essentially two-fold: development of
meta-modeling technique providing fast constructing of visual
languages, flexibly satisfying the continuously developing
requirement system, and realization of automatic code generation
for tasks formulated on level of these visual languages (Domain
Specific Languages, DSL). We wish to provide this by
elaboration of adequate development methodology, metamodeling techniques included into effective frame system.
Different approach and character of different mobile platforms
(Java, Symbian, Windows CE, etc.) made difficult work of
developers
June 29-30 2009.
Hungarian-Japanese Conference
68
MIK
Some newest results (1.)
 Extension of radio access planning software system with new
technologies and services
 Development of professional MIMO antenna and receiver
• Operator-independent mobile terminal positioning systems
and its implementation
• IMS-based click-to-dial services and the implemented
elements of the intelligent office concept
• Realization of an intelligent client and gateway based remote
control system that supports industrial object monitoring with
mobile technologies
• Development of a WLAN-based localization system
• Realization of a framework that supports the development of
context dependent (e.g. location dependent) applications
• Realization of a framework that supports platform
interoperability
• Software framework that supports the processing of huge
amount of data for users behavior and identification
June 29-30 2009.
Hungarian-Japanese Conference
69
MIK
Some newest results (2.)
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Sensor network and SMS gateway
WiFi dynamic direct communication
SOMOSI user mobility and source modeling software
HSDPA schedulers, HSDPA simulator
VMTS system
Thin client based far management solution
CM system
Location based Parlay application
Cellular phone measurement
mVPN
QoS driver
Mobile ticket
Experimental development of new user interface prototypes
Digital beamforming (DBF)
June 29-30 2009.
Hungarian-Japanese Conference
70
Thank you for your attention
June 29-30 2009.
Hungarian-Japanese Conference
71