# 1 © NOKIA Presentation_Name.PPT / 13-11-2003 / Jukka K. Nurminen OR at Nokia Research Center Jukka K. Nurminen Nokia Research Center

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1 © NOKIA Presentation_Name.PPT / 13-11-2003 / Jukka K. Nurminen OR at Nokia Research Center Jukka K. Nurminen Nokia Research Center jukka.k.nurminen@nokia.com

2 © NOKIA Presentation_Name.PPT / 13-11-2003 / Jukka K. Nurminen Where is OR at NRC? OR analysts => No LP & Simplex => No Dynamic programming => No Integer programming => No Game theory => No Decision analysis => No At first glance there is little use of OR BUT…

3 © NOKIA Presentation_Name.PPT / 13-11-2003 / Jukka K. Nurminen Design an electronic circuit fulfilling a given specification with minimum cost minimum power usage minimum size maximum reuse … Simulation -> Analog Circuit Design

4 © NOKIA Presentation_Name.PPT / 13-11-2003 / Jukka K. Nurminen Client 3 Client 2Client/Server 1 Client 4 Client 5 Root server Lucas-Lehmer test: 2 p -1 is prime if and only if S(p-1) = 0 (mod 2 p -1), where S(1) = 4 and S(k+1) = S(k) 2 -2. Personal Java on Nokia Communicator mobile phone + Simulations -> Distributed computing

5 © NOKIA Presentation_Name.PPT / 13-11-2003 / Jukka K. Nurminen Plan the transmission network to connect GSM basestations with minimum cost high reliability easy maintenance flexibility for growth … Graph theory -> Network Planning Tool

6 © NOKIA Presentation_Name.PPT / 13-11-2003 / Jukka K. Nurminen Queuing Models -> IP network analysis time Packets in the system: - under service - waiting 1 2 3 4 N - arriving packet - departing packet Little’s law: E[N]=E[W]  If:  =   L/C < 1 i.e. if the system is stabile

7 © NOKIA Presentation_Name.PPT / 13-11-2003 / Jukka K. Nurminen Data analysis -> Location Detection Algorithms

8 © NOKIA Presentation_Name.PPT / 13-11-2003 / Jukka K. Nurminen Statistical analysis -> Analysis of management data

9 © NOKIA Presentation_Name.PPT / 13-11-2003 / Jukka K. Nurminen Non-linear programming -> Auto-tuning of base station parameters Cell pilot power P(t) is controlled with formulas:

10 © NOKIA Presentation_Name.PPT / 13-11-2003 / Jukka K. Nurminen Self-organizing maps -> Context recoqnition Sensor signals for various user movements Data from a user scenario snapshot of three acc signals

11 © NOKIA Presentation_Name.PPT / 13-11-2003 / Jukka K. Nurminen What kind of OR works? OR tools and techniques embedded to application domain specific solutions Problem-solving mindset Simple, straightforward solutions Flexibility to evolve Fast and evolutionary development Meeting new and unexpected needs Tools complement rather than replace human experts Strict optimality or highly efficient algorithms are seldom needed

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