Welcome to TURBAN TURBo codes, Access and Network Technology

TURBAN is a joint research project focused on the emerging technologies towards the Third Generation Mobile Communication Systems, which is currently under standardization worldwide. The project, with its focus on Universal Mobile Telecommunications System (UMTS), is funded by Telenor , and it is a collaboration between Norwegian University of Science and Technology (NTNU) and Telenor.

Two departments, Department of Telecommunications and Department of Telematics , from Faculty of Electrical Engineering and Telecommunications in NTNU, and the Research and Develepment Department of Telenor Telenor FoU are involved in this project. Professor Geir E. Øien from the Department of Telecommunications in NTNU is the project manager.

About TURBAN

 
Background Information
Objectives
Work Plan
Research Groups
Project Activities
Participants
Publications
TURBAN Internal

Additional Information

 
AES Workshop 1999 Oslo
UMTS in Telenor R&D
Multimedia Lab in NTNU
Related Conferences

Links

 
ITU
ETSI
IMT-2000
UMTS Forum
3GPP
3GPP2
HiperLAN/2 Global Forum
COST Action 273 Towards Mobile Broadband Multimedia Networks

Background Information

The subject of intense worldwide efforts on research and development throughout the present decade, UMTS has the support of many major telecommunications operators and manufacturers because it represents a unique opportunity to create a mass market for highly personalized and user-friendly mobile access to tomorrow's "Information Society".

UMTS will deliver pictures, graphics, video communications and other wide-band information as well as voice and data, direct to people who can be on the move. UMTS will build on and extend the capability of today's mobile technologies (like digital cellular and cordless) by providing increased capacity, data capability and a far greater range of services using an innovative radio access scheme and an enhanced, evolving core network.

UMTS is currently under standardization worldwide by Third Generation Partnership Project (3GPP). The launch of UMTS services from the year 2001 will see the evolution of a new, "open" communications universe, with players from many sectors (including providers of information and entertainment services) coming together harmoniously to deliver new communications services, characterized by mobility and advanced multimedia capabilities. The successful deployment of UMTS will require new technologies, new partnerships and the addressing of many commercial and regulatory issues.

TURBAN, the joint project between Telenor R&D and NTNU , was launched in 1999. The research work is focused on several hot topics within the area of ongoing activities in UMTS.

Objectives

• Perform research on UMTS related activities
• Establish a 3rd generation mobile communications environment in Norway

Work Plan

• Project proposed in 1998
• Project launched in 1999

Research Groups

• Integration of radio sub-system and network
• Network and architecture
• Turbocodes for mobile and cordless systems

Project Activities

• The 1st TURBAN workshop was held on Sept. 29, 2000 in Trondheim.

  Workshop minutes by Geir Øien

  UMTS related activities at Telenor by Josef Noll

• The 2nd TURBAN workshop was held on Feb. 12, 2001 in Trondheim.

  Workshop minutes by Norvald Stol and Josef Noll

  From 2G to 4G by Josef Noll

  BRAN - Broadband Radio Access Networks by Ragnar Eckhoff

• "Integration of radio and core network" -- Discussion Meeting NTNU-Telenor May 8, 2001, Kjeller

  Meeting minutes by Josef Noll

• "Channel Coding and Modulation for Wireless Systems" -- Discussion Meeting NTNU-Telenor Sept. 27, 2001, Kjeller

  Meeting minutes by Geir Øien

  Kanalkoding og modulasjon i trådløse systemer Presentation by Geir Øien

  Propagation Modeling and Channel Coding for Indoor Wireless Local Area Networks Presentation by Ola Jetlund

• "QoS and Resource Management in UMTS" -- Discussion Meeting NTNU-Telenor Oct. 18, 2001, Kjeller

  Meeting minutes by Stein Svaet and Frank Li

  QoS I UMTS Presentation by Thor Gunnar Eskedal

  Performance models for wireless networks Presentation by Terje Jensen

  QoS and resource management in UMTS Presentation by Frank Li

Participants

Publications

• Ola Jetlund, Geir E. Øien, Kjell J. Hole, , "Adaptive Gallager Coded Modulation on Rayleigh Fading Channels: Comparison of Simulated and Theoritical Performance", COST 273 TD (03)-040, presented at 6th Management Committee Meeting of COST Action 273, Towards Mobile Broadband Multimedia Networks, Barcelona, Spain, Janyary 15th - 17th, 2003

• Frank Y. Li and Norvald Stol, "A Study on Traffic Shaping, Policing and Conformance Deterioration for QoS Contracted Networks", Proceedings of IEEE Global Telecommunications Conference (GLOBECOM), Taipei, Taiwan, November 17-21, 2002, .

• Ola Jetlund, Geir E. Øien, Kjell J. Hole, Vidar Markus and Bård Myhus, "Rate-Adaptive Coding and Modulation with LDPC Component Codes", European Cooperation in the field of Scientific and Technical Research (ERUO-COST), COST 273 TD(02) 108 Conference, Lisboa, Portugal, September 19-20, 2002. Presentation.

• Tung T.Pham and Andrew Perkis, "Effect of interference on narrowband CDMA in hierarchical celluiar system", Proc. of IEEE/IEE International Conference on Telecommunications (ICT) 2002, Beijing, China, June 23-26.

• Frank Y. Li and Norvald Stol, "QoS provisioning using traffic shaping and policing in 3rd-generation wireless networks", Proc. of IEEE Wireless Communications and Networking Conference (WCNC) 2002, Orlando, FL. USA, Mar. 17-21, pages 139-143.

• Frank Y. Li, "Local and Global QoS-aware Token Bucket Parameters Determination for Traffic Conditioning in 3rd Generation Wireless Networks", Proc. of European Wireless (EW) 2002, Florence, Italy, Feb. 25-28, pages 362-368.

• Frank Y. Li and Norvald Stol, " Providing Conformance of the Negotiated QoS Using Traffic Conditioning for Heterogeneous Services in WCDMA Radio Access Networks", Proceedings of NIK'01, Norsk Informatikk Konferanse, Tromsø, Norway, Nov. 26-28, 2001.

• B. Myhre, V. Markhus, and G. E. Øien, "LDPC coded adaptive multilevel modulation for slowly varying Rayeigh-fading channels" Proc. IEEE Norwegian Signal Processing Symposium (NORSIG-2001), Trondheim, Norway, Oct. 18-20, 2001.

• Frank Y. Li, Norvald Stol, Tung Thanh Pham and Steinar Andresen,"A Priority-oriented QoS Management Framework for Multimedia Services in UMTS" Proc. of the 4th International Symposium on Wireless Personal Multimedia Communications (WPMC'01), Aalborg, Denmark, Sept. 9-12, 2001.

• Frank Y. Li, "Embodying Traffic Conditioning at Radio Access Network for QoS Provision in Next-Generation Wireless Networks" Proc. IFIP Workshop on IP and ATM Traffic Management WATM'2001 & EUNICE'2001, Paris, France, Sept. 3-5, 2001.

• Tung Pham Thanh, Andrew Perkis and Frank Y. Li, "Call Admission Control Algorithm for Multichannel Users in Hierarchical Cellular Systems " Proc. IEEE 3Gwireless'01, San Francisco, CA. USA, May 30 - June 2, 2001.

• Frank Y. Li and Norvald Stol, "A Priority-oriented Call Admission Control Paradigm with QoS Re-negotiation for Multimedia Services in UMTS," Proc. IEEE Vehicular Technology Conference (VTC'01spring), Rhodes, Greece, May 6-9, 2001.

• K. J. Hole and G. E. Øien, "Adaptive Coding and Modulation: A Key to Bandwidth-efficient Multimedia Communications in Future Wireless Systems" Telektronikk (special issue on "Wireless future") vol. 97, no. 1-2001, pp. 49-57, ISSN 0085-7130. May 2001.

• G. E. Øien and K. J. Hole, "Maximum Average Spectral Efficiency of Slowly Varying Rayleigh Fading Channels with Pilot-symbol-assisted channel Estimation" Proc. European Personal Mobile Communications Conference (EPMCC-2001), Vienna, Austria, Feb. 20-22, 2001.

• Tung Pham Thanh and Andrew Perkis, "Integration of Radio Access System and Networks" Proc. NORSIG, June 2000.

Research Groups in TURBAN

• Integration of radio sub-system and network

Ph.D student / Research fellow Than Tung Pham

NTNU supervisor: Andrew Perkis

Telenor FoU Contact person: Olaf Røstbakken, Josef Noll

This task represent key action points for bridging the gap between the WIRAC project and the network aspects of UMTS, including general architecture and possible services and applications. The task is absolutely necessary for generating a complete UMTS prototype and will involve multi-disciplinary work between Signal Processing, Communications, Radio systems and Telematics and include topics such as: QoS simulations for multimedia based applications and services using UMTS network and UTRA Bridging the gap between UTRA designers and Core network designers Implementation of the GRAN (Generic Radio Access Network) concept in the UMTS demonstrator.

For more information, see my Research Plan.

• Network and architecture

Ph.D student / Research fellow Frank Y. Li

NTNU supervisor: Norvald Stol, Steinar Andresen

Telenor FoU Contact person: Stein W. Svaet/Bjørn Harald Pedersen

The focus of this study is to investigate Quality of Service (QoS) issues in UMTS. The research work currently conducted is related to radio resource management in a Radio Network Subsystem (RNS). We are going to further stretch our studies into one or more of the following aspects:

. Radio Network Controller (RNC) resource management. Resource management in the RNC is certainly very interesting to study. Acting as the gateway interfacing the external networks and radio networks, the RNC controls more resources than base stations (Node Bs) and co-ordinates the service requirements from both the mobile stations and the external networks. Many interesting issues are under consideration within the resource management of the RNC, for instance, the resource management mechanisms when umbrella structure is introduced in a RNC area, how handover is conducted without QoS degradation and how renegotiation mechanism is employed to accept more higher priority calls while not dropping existing connections.

.Traffic shaping schemes. As many internet applications are very bursty, the resource manager needs to regulate the incoming traffic to allocate resources efficiently. A traffic shaping scheme known as ``Token Bucket Algorithm'' is proposed by IETF where the constant token rate R represents the maximum bitrate and the bucket size B corresponds to bounded burst size. But how this algorithm performs for UMTS applications needs to be further investigated.

.QoS parameters mapping. Mapping of UMTS bearer service parameters to core network (e.g. IP based) bearer service parameters is actually operator-dependent. As 3GPP and IETF have different definition on QoS parameters, how to match e.g. DiffServ classes to UMTS service classes and provide required QoS to end users is a great concern. We'll focus our work on QoS specification translation and parameters mapping between different protocol layers at network edge gateways.

.Resource reservation for UMTS. Resource ReSerVation Protocal (RSVP) is an important component for IntServ approach. But as for mobile systems, resource reservation might not be practical because the available bandwidth in a connection is highly variable for a reservation to be meaningful. However, it seems prudent if some resource allocation and admission control could be applied even if hard guarantees of resource provision are not possible. We shall further study RSVP for UMTS.

. For more information, see my Research Plan.

• Turbocodes for mobile and cordless systems

Ph.D student / Research fellow Ola Jetlund

NTNU supervisor: Geir Øien,

Telenor FoU Contact person: Ole Grøndalen

The development of future systems for high quality mobile and wireless multimedia communication requires a great amount of work, since mulimedia communication demands high capacity, and at the same time the available bandwidth and power is limited. Wireless systems suffer from time varying fading channels which limits the capacity and makes design of access- and coding methods more complex. We wish to

. Achieve increased theoretical insight in the mechanism which makes turbo codes so promising, with the intent to be able to do better coding design and parameter optimization than in existing systems.

. Study the use of highrate component codes based on trellis coded modulation (TCM) in a turbo coder structure.

. Study applications of turbo codes in an adaptive coded communication system optimized for fading channels.

. Identify possible simplifications of turbo decoding algorithms to achieve less delay (which is nessesary for fast varying channels).

. Study the use of the turbo decoding principle in estimating CDMA sequences (specially interesting with the development of UMTS).

. Take a closer look at generalizations and modifications of turbo codes that can give even higher performance.