CWC Centre for Wireless Communications. Ari Pouttu, Director - CWC

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1 CWC Centre for Wireless Communications Ari Pouttu, Director - CWC

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3 CWC Key Characteristics Project based operation, all funding outside university budget > 25 projects. Research partners include Tekes, Nokia, Nokia Siemens Networks, Xilinx, Finnish Defence Forces, European Commission, European Defence Agency, European Space Agency, Patria, Insta, Elektrobit, Nethawk, Ericsson. Annual budget of approximately 7 M EUR. 110 Staff All new initiatives funded by own surplus, which is used for CWC funded professorships (Currently 7) Internal strategic research projects Acquisition of high class research equipment CWC Overview

4 CWC in Figures RESEARCH FUNDING CWC Research funding division in NUMBER OF STAFF Research personnel Management and administration

5 CWC research activities Ari Pouttu, Director - CWC

6 CWC Research Arena Tekijöiden sukunimet aakkosjärjestyksessä

7 Some Dimensions/Drivers for Future Wireless Networks Development Strong component in GIGA projects Strong component in GIGA and EU FP7 projects Strong component in EU FP7 projects Evolution of mobile cellular networks Opportunistic communication Wireless Internet architectures Energy efficient ( green ) networking Ubiquitous Internet access Broadband mobile wireless Local connectivity Positioning enabled network management Intelligent network(s) management

8 Evolution of Mobile Cellular Networks Wide-Area Access Technologies 3G networks well established High speed access (HSDPA and HSUPA) largely emerged. Physical layer technology based on WCDMA. MIMO and other enhancements introduced currently. 3G LTE emerging: first standard versions completed Physical layer based on OFDM(A) in downlink and SC-FDMA in uplink; efficient user scheduling plays a big role. Multiple-input multiple-output (MIMO) used extensively. More network control functionalities to base stations. WiMAX also based on OFDM(A) and is very similar to LTE. IMT-A development has started and can potentially introduce totally news ways for wireless networking. European WINNER project has been investigating IMT-A radio access techniques since 2004.

9 Technical Enablers/Challenges for IMT-A Novel network topologies Co-operative relaying. Distributed antenna systems. Challenges in L1 Different multiantenna solutions for multiuser environment. Channel quality based link adaptation. Multiple access Fast user scheduling in OFDMA. Opportunistic spectrum use concepts. Network control Complexity (~smartness) increases => autonomosity required => cognitive radio networking (CRN) concepts. Spectrum sharing concepts Part of the spectrum will be shared between operators. Sharing schemes call for cognitive radio capabilities. None of these has been realised in any existing or emerging widely deployed standard yet.

10 Challenges for Future Internet Wireless Perspective The original Internet architecture is being pushed to it s limits due to: mobility, number of devices and pervasiveness, fast changing content, bandwidth availability, end user provided infrastructure and services, security, trust, dependability, QoS requirements, heterogeneity of devices, access technologies and services, complexity of network management.

11 Research Challenges for Wireless Networking Mobility, dynamically changing information needed for ubiquitous service infrastructure, number of active nodes, lack of transmission capacity etc. call for totally new type of networking architectures. It can be seen already now in the development of cellular networks in the need of development of local connectivity. How is information routed from multiple sources to destination(s)? How is the changing network(s) environment managed and used most efficiently? Some research themes driving for the change: Integration of sensor networks to the rest of Internet Intelligent management of heterog. wireless networks Mobile wireless driven future Internet architecture

12 Energy Efficient Green Networking The telecom industry is growing fast (more users & higher data rates), causing an increase in its environmental impact. This growth needs to be compensated by technology with improved energy efficiency - which is not yet achieved. ICT represents today a small part (2-3%) of CO2 emissions, BUT it is rapidly growing and energy costs for network operators are already huge. ICT has great potential to reduce CO2 emissions drastically in short to medium term. Future technology development should furher aim at reducing energy consumption. Interesting research issues can be identified both in networking and radio side energy efficient network topologies & architectures heterogeneous networks management devices & transmission

13 Local Connectivity in Mobile Cellular Systems During the recent years, mobile cellular standards have started to include local broadband connectivity on licenced bands. This benefits both user (lower costs per bit) and operators (increased network capacity and savings in CAPEX/OPEX). For the future development of them, a careful thinking is needed in which environments users need broadband wireless connectivity: Home Femtocells Commuting Office, public places Anywhere with friends Moving local access Evolutionary / networked femtocells Device-to-device communication

14 Research Challenges in Local Connectivity Femtonetwork management (handovers, resource management, distributed antenna solutions, user scheduling, etc.). Easy installation of multiple sites; autoconfiguration and autonoumous management (SON). Multioperator environment and spectrum sharing accross operators. Interference management between femtocells and micro/macro BSs. Co-existence with other access technologies (Wi-Fi). High-quality backhaul (either fixed or wireless).

15 Intelligent Network(s) Management or Cognitive Wireless Networking or... Dynamic spectrum access Frequency sharing view Try to encompass different approaches to spectrum reform. Autonomic communications Self-configuring networks AC initiative addresses the problem of self-configuring radio research management and MAC. Can be conceived as cognitive networks. Software defined radio The radio equipment A multiband radio capable to support different phy solutions. Different camps aiming at similar goals! Cognitive radios Typically lower layers physical layer and signal processing issues such as spectrum sensing. Some MAC control issues are addressed, but research on resource allocation is not well covered. Cognitive radio networks Intelligent management of networks RRM and distributed network control are the key issues. Ambient networks Typically higher layers With emphasis on upper layer issues, ambient network (AN) research addresses seamless interoperation of heterogeneous networks.

16 CWC s TEKES GIGA projects

17 CWC s TEKES Projects 18 Currently CWC is active in 13 projects that have strong TEKES funding including e.g. GIGA projects and 3 FiDiPro professors projects GIGA technology programme has strong wireless access and wireless networking component and is funding currently 6 projects These GIGA funded projects are presenting their main results in this seminar PANU - Packet Access Networks with Flexible Spectrum Use MITSE - MIMO Techniques for 3G System and Standard Evolution COGNAC - COGNitive And opportunistic wireless Communication networks CROSSNET - CROSSlayer solutions and NETwork support for broadband wireless access WINNER+ - Wireless World Initiative New Radio + IMT-A EVALUATION

18 PANU - Packet Access Networks with Flexible Spectrum Use Basic cellular network models are augmented into more flexible network structures (e.g., ad hoc mesh topologies, relay enhanced cells and direct device-to-device communications) as shown in Figure. All PANU research efforts are considered as possible intermediate steps towards IMT-Advanced and beyond 4G systems 19 Sponsors: Tekes, Nokia, Nokia Siemens Networks, Elektrobit, and CWC. Volume 2009: 990 k, 105 person months (PM) General research theme: radio resource management and radio network control techniques for mixed topology networks Enhanced cellular radio networks Wireless mesh router backbone IPv6 Radio Access Network Basic cellular B Inter-operator interaction A -> B A Local connectivity wireless networks Fundamental (inter-)networking theories and topics Wireless mesh clients relay node Expected Impact: supports the project sponsors in designing new system concepts as well standards, terminals, and base stations for IMT-Advanced and beyond 4G systems Relays for improved coverage/capacity Ad-hoc multihop extension via relay node Direct terminal-to-terminal communications Distributed antenna MIMO concept

19 MITSE - MIMO Techniques for 3G System and Standard Evolution MITSE is a B3G cellular communication system research project. The scope and content of the project covers future development and evolution of 3G cellular communication systems known as 3G Long-Term Evolution and IMT-A. The main emphasis is on MIMO transmission schemes and receiver algorithms and architectures as well as computation solutions needed by them in multiuser OFDM(A) and SC-FDMA systems 20 Sponsors: Tekes, Nokia, Nokia Siemens Networks, Elektrobit, Uninord and CWC. Volume 2009 : 873 k, 93 PM General research theme: The use of multiple antennas in both the transmitter and the receiver (MIMO) in 3G Long- Term Evolution and IMT-A Expected Impact: Algorithms utilized in MIMO-OFDM systems such as LTE/LTE-A, IMT-A and Mobile WiMAX C h a n n e l I F F T F F T S / P x S I S O d e t e c t o r Q A M M o d I n t L A 1 L E 2 I n t L E 1 D e I n t E n c o d e r S I S O d e c o d e r y L D 1 L A 2 L D 2 b

20 COGNAC - COGNitive And opportunistic wireless Communication networks The process of cognitive resource management can be best described as a cognition cycle. The cycle includes sensing of the operating environment, management decision algorithms and adaptation to better exploit the resources in the environment. Furthermore, the decision-making has to take into account any outside restrictions and policies. Sponsors: Tekes, CWC, VTT Partner: VTT Volume 2009 : CWC 285k, 31 PM VTT 355 k, 28 PM General research theme: Realizing the cognitive cycle in future highly heterogeneous networks Expected Impact: deep understanding of the key enabling technologies for opportunistic communication systems, such as: flexible frequency use, dynamic system management, radio resource management and multichannel medium access control methods. 21

21 CROSSNET - CROSSlayer solutions and NETwork support for broadband wireless access The anticipated integrated platform, i.e. CrossNet Common Laboratory, consists of existing technology building blocks provided by project partners: NetHawk, EB, VTT, Nokia Siemens Networks, Nokia Devices and CWC. Laboratory is targeted for experimental research on cross-layer optimisation. Sponsors: Tekes, Elektrobit, Nethawk, Nokia, Nokia Siemens Networks, CWC, VTT Partner: VTT Volume 2009 : CWC 175k, 20 PM VTT 194 k, 16 PM General research theme: to connect NetHawk s network simulator and analyzing tools to CWC s and VTT s computer simulation models and testing tools and EB s radio interface test systems Expected Impact: To combine the existing expertise of radio access and networking technology amongst the project partners to build a CrossNet research/testing laboratory for LTE and LTE-A 22

22 WINNER+ - Wireless World Initiative New Radio + The project focuses on developing and evaluating innovative concepts and technologies for systems beyond 3G LTE. The innovations are optimized and evaluated by simulations within the overall WINNER+ concept. Beyond that, parts of this concept are expected to be incorporated into candidate IMT-Advanced technology proposals. Sponsors: Tekes, CWC Partners: EUREKA Celtic Winner+ consortium comprises almost 30 partners including manufacturers, operators, R&D centers and universities Volume 2009 : 519 k, 51 PM General research themes: innovations in areas with a high potential of exploitation in IMT-A, harmonization of innovations in the prestandardization phase, participation in the evaluation of selected technology proposals, evaluation and demonstration of selected key technologies Expected Impact: candidate IMT- Advanced technology proposal 23

23 24 IMT-A EVALUATION The purpose of the project IMT-Advanced Evaluation is to participate in the evaluation work in WINNER+ project. Sponsors: Tekes, CWC Volume 2009 : 105 k, 10 PM General research themes: As support to WINNER +, the goal of the project is to provide reliable evaluations of IMT-Advanced compliant technologies that are submitted to ITU-R development of radio interface recommendations. Expected Impact: Evaluation results of candidate IMT-Advanced technology proposals, system level simulator based on the ITU-R IMT-A evaluation specifications