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GOTOTWIN – Spodbujanje povezovanja in inovacij na področju obnovljivih virov energije s tehnologijo digitalnih dvojčkov

Mihael Mohorčič, Odsek za komunikacijske sisteme (E6)

Za obnovljive vire energije v jadransko-jonski regiji je značilna razdrobljenost in omejeno čezmejno sodelovanje energetskih sistemov. Projekt GOTOTWIN v okviru programa Interreg ADRION želi to stanje izboljšati s pomočjo zasnove in implementacije odprte platforme za integracijo digitalnih dvojčkov obnovljivih virov energije v širši regiji, ki bo pomagala deležnikom v realnem času spremljati osnovna sredstva, simulirati zapletene energetske scenarije in načrtovati naložbe v infrastrukturo. Pri tem projekt vključuje univerze, raziskovalne inštitute, ponudnike energije in tehnološka podjetja iz Grčije, Hrvaške, Slovenije, Srbije, Bosne in Hercegovine ter Severne Makedonije.

Mapiranje področja obnovljivih virov in deležnikov

Projekt se je začel z oceno stanja na področju obnovljivih virov energije, ki je pokazala ogromen neizkoriščen potencial vetrnih, sončnih, vodnih in biomasnih virov v regiji ter poudarila, da lahko tehnologija digitalnih dvojčkov pomaga pri boljšem izkoriščanju teh virov. Poleg tega je študija izpostavila ključni pomen sodelovanja med državami članicami in nečlanicami EU za doseganje ciljev evropskega zelenega dogovora in načrta REPowerEU, pri čemer imajo ključno vlogo naložbe v platforme digitalnih dvojčkov in usklajene politike.

Sočasno so projektni partnerji pod vodstvom raziskovalcev z IJS izvedla mapiranje deležnikov na področju obnovljive energije. S preiskavo nacionalnih ekosistemov je bil ustvarjen obsežen seznam operaterjev elektrarn in omrežij, regulatorjev, občin, raziskovalnih laboratorijev in inštitutov, tehnoloških ponudnikov in nevladnih organizacij. Da bi zagotovili vključenost vseh ključnih akterjev, je postopek mapiranja sledil štirim strukturiranim korakom, od identifikacije preko konsolidacije in kategorizacije do preverjanja. S tem postopkom je bil ekosistem deležnikov, katerega osnovo predstavljajo uveljavljena omrežja na področju energetike, razširjen z novimi deležniki kot so zagonska podjetja in lokalne energetske skupnosti.

Zasnova arhitekture

V naslednjem koraku so projektni partnerji v sodelovanju z deležniki ter s pomočjo vprašalnikov, intervjujev in delavnic zbrali funkcionalne in nefunkcionalne zahteve za platformo digitalnih dvojčkov. Zahteve poudarjajo potrebo po zajemanju podatkov v realnem času, visoki prepustnosti podatkov, varni komunikaciji, uporabniku prijaznih vmesnikih, združljivosti z obstoječimi sistemi in skladnosti s predpisi EU o podatkih. Za prikaz in validacijo delovanja platforme znotraj projekta so bili določeni trije prednostni pilotni primeri uporabe:

deljenje podatkov med obnovljivimi viri in operaterji omrežij,
storitve napovedovanja in optimizacije na osnovi modelov umetne inteligence, in
eksperimentalno okolje za testiranje novih tržnih in regulatornih scenarijev v varnem virtualnem okolju.

Na podlagi zbranih zahtev je bila določena tronivojska konceptualna arhitektura, v kateri:

komunikacijski prehod povezuje sredstva obnovljivih virov energije (vetrne, sončne in hidroelektrarne ter okoljske in vremenske senzorje) z uporabo standardnih protokolov.
jedro platforme digitalnih dvojčkov zajema, shranjuje in analizira podatke.
vizualizacija ponuja nadzorne plošče za spremljanje v realnem času, napovedno vzdrževanje sredstev, napovedovanje proizvodnje in porabe energije ter agregacijo virov v virtualne elektrarne.

Spodnji diagram prikazuje podatkovni tok od obnovljivih virov energije in senzorjev skozi jedro platforme digitalnih dvojčkov do različnih vizualizacijskih modulov, ki se lahko prilagodijo potrebam operaterjev, regulatorjev ali raziskovalcev.

Slika 1: Zasnova platforme digitalnih dvojčkov za obnovljive vire energije projekta GOTOTWIN

Predlagano tronivojsko arhitekturo smo v projektu realizirali kot modularen, storitveno-orientiran, oblačni sistem. Celotna zasnova temelji na odprtokodnih tehnoloških komponentah Kubernetes za orkestriranje mikrostoritev in ustrezno prilagajanje sistemskih virov, Eclipse Hono kot prehod interneta stvari (angl. Internet of Things gateway) za varno povezovanje sredstev in senzorjev, Eclipse Ditto za upravljanje stanj digitalnih dvojčkov, InfluxDB za shranjevanje podatkovnih časovnih vrst in Grafana za zagotavljanje interaktivnih nadzornih plošč. Uporaba odprtih standardov in odprtokodnih orodij zagotavlja interoperabilnost in preprečuje odvisnost od enega samega ponudnika. Takšna zasnova omogoča modularnost, prilagodljivost, interoperabilnost, varnost in razširljivost npr. z moduli za napovedovanje, optimizacijo, trgovanje in analizo politik.

Sodelovanje z deležniki in usklajevanje energetskih politik

Poleg tehnične zasnove in izvedbe platforme digitalnih dvojčkov za obnovljive vire energije je pomemben del projekta GOTOTWIN tudi vzpostavitev sodelovanja z deležniki in usklajevanje energetskih politik v širši regiji. V ta namen projekt organizira različne delavnice in dogodke.

Prva dvodnevna delavnica, ki je potekala maja 2025 v grškem mestu Kozani pri partnerju University of Western Macedonia, je obsegala tri vsebinsko ločene dogodke. Na prvem dogodku so udeleženci primerjali različna ogrodja mikrostoritev, odprtokodne komponente in orodja ter preučevali, kako najbolj učinkovito v bodočo platformo povezati senzorje, robne naprave in sredstva obnovljivih virov energije v obstoječih živih laboratorijih partnerjev iz Severne Makedonije, Srbije, Grčije in Hrvaške. Razprava je zajela tudi čezmejno eksperimentiranje in za to potrebno uskladitev vrst senzorjev, podatkovnih formatov in vmesnikov. Drugi dogodek je bil osredotočen na energetske politike in regulativo. Projektni partnerji in zunanji udeleženci so kot ključne izzive za čezmejno uporabo digitalnih dvojčkov in energetsko povezovanje identificirali različna tveganja kibernetske varnosti, vprašanja lastništva podatkov in neskladne regulatorne okvire med državami. Tretji dogodek z gosti iz vladnih agencij, energetskega regulatorja in industrije se je podrobneje posvetil vprašanjem o kibernetski varnosti, interoperabilnosti in upravljanju podatkov. Udeleženci v razpravi so izpostavili potrebo po usklajevanju predpisov med državami, določitvi jasnih pravil o lastništvu in zasebnosti podatkov ter uvedbi spodbud za naložbe v infrastrukturo digitalnih dvojčkov. Poudarili so tudi pomembnost vključevanja državljanov in malih podjetij v energetsko tranzicijo z namenom izkoriščanja digitalnih dvojčkov tako za družbene inovacije kot tehnično optimizacijo.

Drugo dvodnevno delavnico je decembra 2025 v Ljubljani gostil Institut “Jožef Stefan”. S to delavnico je projekt označil dosežek pomembnega mejnika, to je delujoč prototip platforme digitalnih dvojčkov za obnovljive vire energije projekta GOTOTWIN. Delavnica je obsegala dva dogodka: prvi je bil usmerjen v mreženje in vključevanje deležnikov, drugi pa je namenjen začetku integracije obnovljivih energetskih sistemov iz živih laboratorijev v Severni Makedoniji, Srbiji, Grčiji in na Hrvaškem v platformo digitalnih dvojčkov. Odprta Delavnica o digitalnih dvojčkih za energetsko tranzicijo, s številnimi povabljenimi deležniki in sorodnimi projekti, je obsegala 18 predstavitev, namenjena pa je bila tako razširjanju dosežkov projekta GOTOTWIN kot predstavitvam sorodnih projektov in aktivnosti drugih deležnikov. Drugi dogodek je bil zaprte narave in namenjen projektnim partnerjem za pridobivanje praktičnih izkušenj z integracijo obnovljivih virov energije v platformo ter preskušanju zajemanja podatkov v realnem času, podprtih komunikacijskih protokolov in vključenih modulov za vizualizacijo.

Slika 2: Udeleženci delavnice GOTOTWIN na IJS (©Marjan Verč, 2025)

Trenutno stanje in nadaljnji koraki

Do začetka leta 2026 je projekt GOTOTWIN zaključil vrsto osnovnih študij in poročil, določil arhitekturo platforme digitalnih dvojčkov, realiziral delujoč prototip in vzpostavil sodelovanje z deležniki na področju obnovljivih virov energije v regiji. Partnerji iz živih laboratorijev sedaj vključujejo svoje vire v prototip platforme digitalnih dvojčkov, ki mogoča integracijo senzorjev, zajem podatkov v realnem času preko Eclipse Hono, shranjevanje časovnih vrst podatkov v bazo InfluxDB in njihovo vizualizacijo preko interaktivnih nadzornih plošč v okolju Grafana. Sočasno partnerji razvijajo modele umetne inteligence za kratkoročno napovedovanje proizvodnje in porabe energije ter zaznavanje anomalij, pripravljajo pa tudi čezmejne eksperimente, ki bodo povezovali žive laboratorije iz različnih držav.

V naslednji fazi bo platforma razširjena z vključitvijo naprednih optimizacijskih algoritmov za uravnavanje ponudbe in povpraševanja, orodij za simulacijo trga in testiranje regulatornih scenarijev ter modulov za analizo energetskih politik. Ob tem bo projekt nadaljeval z vključevanjem deležnikov prek različnih delavnic in tematskih dogodkov, končni cilj pa je postati referenčna točka za regionalno sodelovanje na področju obnovljivih virov energije.

Projekt GOTOTWIN spodbuja integracijo obnovljivih virov energije v jadransko-jonski regiji s pomočjo napredne tehnologije digitalnih dvojčkov. Pobuda z namenom izboljšanja čezmejnega izkoriščanja obnovljivih virov združuje raziskovalne inštitute, univerze in energetska podjetja iz šestih držav. Začetna faza je vključevala celovito mapiranje trga, deležnikov in regulative, kar je razkrilo velik neizkoriščen potencial regije, čemur je sledila zasnova platforme digitalnih dvojčkov. Razvita platforma digitalnih dvojčkov temelji na odprtokodnih orodjih, ki omogočajo varno zajemanje podatkov v realnem času in simulacijo kompleksnih scenarijev. Decembra 2025 je bil v Ljubljani predstavljen prvi delujoč prototip platforme, v katero se zdaj povezujejo živi laboratoriji (angl. living labs) projektnih partnerjev iz Severne Makedonije, Srbije, Grčije in Hrvaške. Platforma je zasnovana modularno in omogoča spremljanje sredstev, napovedno vzdrževanje in vizualizacijo energetskih tokov. Trenutno projektni partnerji razvijajo modele umetne inteligence za kratkoročno napovedovanje proizvodnje in porabe energije ter zaznavanje anomalij. Poseben poudarek projekta je namenjen usklajevanju regulative in energetskih politik ter zagotavljanju kibernetske varnosti v energetskem omrežju. V naslednji fazi bodo v platformo vključeni algoritmi za optimizacijo trgovanja in uravnoteženje omrežja. Projekt GOTOTWIN tako postavlja temelje za regionalni energetski prehod, ki temelji na digitalizaciji in skupnih standardih.

PhD Student in Intelligent Orchestration

We are looking for a motivated, pro-active PhD student that would join a growing young team.

Position: PhD Student / Research Assistant
Contract: Temporary Position Longer Than 6 Months
Employment: Full-Time
Location: Ljubljana, Slovenia (On-Site)
Salary: ~39.600 €/year gross salary, ~3.300 €/month gross

Deadline:

Till the position is filled.

Description:

The work plan consists of 1) Formulate a device and input agnostic fluid communication and computation scenario where humans can architect and instantiate their home digital space with personalized software digital assistants (i.e. customized GPTs or Personas) and inputs (i.e. home speaker systems, touch pads, readable holographic projections etc). 2) Extract the network and computation orchestration challenges for supporting such scenario 3) Analyse the SoA of theoretical advancements of neuro-symbolic AI 5) Develop the theoretical framework to enable zero-touch orchestration of the personalized digital space by proposing a neuro-symbolic formalism to address the challenges. The applicant’s tasks will be:

Conducting world-class, original scientific research.
Writing scientific papers for high impact journals and conferences.
Regularly complete all coursework as outlined in the PhD program of study.
Contributing to project activities, including research and scientific dissemination.

Required qualifications and selection criteria:

The applicant must hold a MSc degree or equivalent in related field (computer science, electrical engineering, physics, or mathematics). For this position, it is required to have analytic thinking, good knowledge of at least one programming or scripting language (Python, Matlab, Javascript, C++, etc.) and a good command of English language. Any prior experience with data analytics, code development, communication networks or/and embedded systems is a plus.

About us:

Jožef Stefan Institute is the leading Slovenian scientific research institute, covering a broad spectrum of basic and applied research. The staff of more than 1000 specializes in natural sciences, life sciences and engineering. The mission of the Jožef Stefan Institute is the accumulation and dissemination of knowledge at the highest international levels of excellence. The Institute is also a local leader in technology transfer through extensive collaborations with industry and associated spin-offs and start-ups. The announced post is with SensorLab.

Jožef Stefan Institute’s offices are located a 20-minutes’ walk from the center of Ljubljana, with convenient public transport connections. Ljubljana is a human sized city and a very pleasant place to live in with only 40 mins drive to ski resorts and 1 hour drive to the Adriatic sea.

What we offer:

Cover tuition fees
Working in a world class international research environment involved in international collaborative projects
Opportunities to publish in the best journals and conferences in the field
Additional training in the form of specialized workshops, tutorials, summers schools, technical events
Connections to deep tech start-ups
Flexible working hours
Eligibility for accommodation with subventions at Dormitory for Postgraduate students

Employment: The contract will cover 3 years full-time employment

Place of work: Ljubljana

Application: The application must include CV and a statement describing your research interest. The application must include a cover letter describing motivation, research interests & relevant experience, a detailed CV, a digital copy of BSc/MSc certificate an possibly an access to a recent relevant project (e.g. GitHub repository) or/and any publication. Submit you application to sensorlab@ijs.si.

Type of employment: Temporary position longer than 6 months

Contract type: Full time

First day of employment: Subject to agreement (study year starts in October)

Salary: Standard academic salary with possibility for additional bonus for good performance

Number of positions: 1

City: Ljubljana.

Country: Slovenia

AeroDrops: Selective Detection of Individual Airborne Droplets

Airborne diseases transmitted through respiratory droplets pose a serious public health risk

AeroDrops is the first device to selectively detect and count respiratory droplets in real time, enabling smart, data-driven ventilation control that reduces infection risk, improves indoor air quality, and lowers energy costs. The project received RSF-IND funding at Jožef Stefan Insitute.

Watch AeroDrops promotional video.

And explore AeroDrops technology offer.

Visit of the Beijing Jiaotong University delegation at the Jozef Stefan Institute

On 22nd November 2023 the director of the Jožef Stefan Institute, Prof. Dr. Boštjan Zalar, met with the delegation of Beijing Jiaotong University (BJTU), consisting of the Vice President of BJTU, Mr. Qiang Wu, Prof. Dr. Ke Guan and Dr. Lei Fan.

BJTU is active in the fields of electrical engineering, computer science, economics, transportation, civil engineering, mechanical engineering, physics, architecture, and law. The university, which enrolls 30,000 students each year, comprises 18 schools.

The aim of the visit was to strengthen and expand the cooperation between BJTU and IJS, which has successfully existed for more than 10 years with the Department of Communication Systems (E6). During the meeting, the director of IJS presented the institute, its research areas, research infrastructure and highlighted some of the most important achievements. Following this, the Vice President of BJTU, Mr. Qiang Wu, also provided key information about their university, in particular about its operation and organization, areas of activity and international cooperation. Subsequent discussion was focusing on the supporting activities to innovation processes that IJS offers to researchers, which was supported by M.Sc. Robert Blatnik.

At the end of the successful meeting the Vice President of BJTU, Mr. Qiang Wu, and the Director of IJS Prof. Dr. Boštjan Zalar signed a Memorandum of Understanding governing future collaboration.

Best Paper Award

Sodelavec Odseka za komunikacijske sisteme Instituta “Jožef Stefan” Blaž Bertalanič je s soavtorji dr. Halilom Yetginon, dr. Gregorjem Cerarjem in dr. Carolino Fortuna na mednarodni konferenci IEEE 17th International Conference on Wireless and Mobile Computing, Networking and Communications WiMob’2021 prejel nagrado za najboljši študentski članek z naslovom “A Deep Learning Model for Anomalous Wireless Link Detection”..

V prispevku so predstavili zasnovo in razvoj avtomatskega razpoznavalnika anomalij na povezavah med napravami v brezžičnih omrežjih. Z nenehnim povečevanjem števila naprav, ki se povezujejo v brezžična omrežja, postaja ročno upravljanje in nadzor slednjih vse bolj zahtevno. Z avtomatskim zaznavanjem in prepoznavanjem značilnosti v signalih, ki kažejo na odstopanje od pričakovanega delovanja, lahko močno skrajšamo odzivni čas za odpravo napak in posledično skrajšamo izpade kritičnih storitev in z njimi povezane stroške. Takšni nadzorni algoritmi bodo ključni za zanesljivo obratovanje in upravljanje brezžičnih omrežij prihodnosti.

Postdoc in generative design and optimization of networks

We are looking for a motivated, pro-active and independent researcher that would join a growing young team.

Description:

We are looking for a motivated, pro-active and independent researcher that would join a growing young team. The research of the team focuses on data driven generative design and optimization of various aspects of wireless and energy networks. Some recent research topics: event detection, anomaly detection, non-intrusive monitoring, data pipelines, embedded AI.

You will contribute to:

The establishment of short and long term research agenda
Generate new ideas for research and projects
Lead the activities of running projects
Coordinate/write scientific papers for dissemination in journals and at conferences
Advise PhD students

About us:

Jožef Stefan Institute’s offices are located a 20-minutes’ walk from the center or Ljubljana, with convenient public transport connections. Ljubljana is a human sized city and a very pleasant place to live in with only 40 mins drive to ski resorts and 1 hour drive to the Adriatic sea.

What we offer:

Working in a world class international research environment involved in international collaborative projects
Opportunities to publish in the best journals and conferences in the field
Additional training in the form of specialized workshops, tutorials, summers schools, technical events
Connections to deep tech start-ups
Flexible working hours
Subsidized child care, Slovenia offers a very good environment for families
12 months of paid maternity leave, also some paid paternity leave according to the existing laws and regulations

Required qualifications and selection criteria:

The applicant must hold a PhD degree or equivalent in related field (computer science, electrical engineering, physics or mathematics) obtained no more than three years prior to the application due date; however, for example, periods of sick leave or parental leave can be deducted from the three-year period. For this position, it is required to have analytic thinking, a good track record of publications, good knowledge of at least one programming or scripting language (Python, Matlab, Javascript, C++, etc.) and a good command of English language. Any prior experience with data analytics, code development and communication networks as well as knowledge of embedded systems is a plus.

Employment: The default is one year full-time employment with possible extension.

Place of work: Ljubljana.

Information: Further information is available from sensorlab@ijs.si and the head of the lab, Dr. Carolina Fortuna, carolina.fortuna@ijs.si. More information can also be found at https://sensorlab.ijs.si (lab) and https://e6.ijs.si (department).

Application: The application must include a cover letter describing motivation, research interests & relevant experience, a detailed CV, pointers to recent relevant project (e.g. GitHub repository) or/and journal publications, a digital copy of PhD certificate and possibly one letter of recommendation.

Type of employment: Temporary position longer than 6 months

Contract type: Full time

First day of employment: Subject to agreement

Salary: Standard academic salary and additional bonus for good performance

Number of positions: 1

City: Ljubljana.

Country: Slovenia

Machine Learning for Wireless Link Quality Estimation: A Survey

Excellent overview of machine learning for estimating the quality of wireless links including an application perspective analysis and a design process perspective analysis.

Excellent overview of machine learning for estimating the quality of wireless links including an application perspective analysis and a design process perspective analysis. To appear as early access in IEEE Communications Surveys and Tutorials.

In the meantime, the work is available at https://lnkd.in/dSqWvSy.

Congrats go to Cerar, Yetgin and Mohorčič.

#machinelearning #communications #quality #design

A new Wiley book “The Internet of Things: From Data to Insight” edited by John Davies and Carolina Fortuna

comprehensive coverage of the current state of IoT, focusing on data processing infrastructure and techniques

Written by experts in the field, this book addresses the IoT technology stack, from connectivity through data platforms to end-user case studies, and considers the tradeoffs between business needs and data security and privacy throughout. There is a particular emphasis on data processing technologies that enable the extraction of actionable insights from data to inform improved decision making. These include artificial intelligence techniques such as stream processing, deep learning and knowledge graphs, as well as data interoperability and the key aspects of privacy, security and trust. Additional aspects covered include: creating and supporting IoT ecosystems; edge computing; data mining of sensor datasets; and crowd-sourcing, amongst others. The book also presents several sections featuring use cases across a range of application areas such as smart energy, transportation, smart factories, and more. The book concludes with a chapter on key considerations when deploying IoT technologies in the enterprise, followed by a brief review of future research directions and challenges.

The Internet of Things: From Data to Insight

Provides a comprehensive overview of the Internet of Things technology stack with focus on data driven aspects from data modelling and processing to presentation for decision making
Explains how IoT technology is applied in practice and the benefits being delivered.
Acquaints readers that are new to the area with concepts, components, technologies, and verticals related to and enabled by IoT
Gives IoT specialists a deeper insight into data and decision-making aspects as well as novel technologies and application areas
Analyzes and presents important emerging technologies for the IoT arena
Shows how different objects and devices can be connected to decision making processes at various levels of abstraction

The Internet of Things: From Data to Insight will appeal to a wide audience, including IT and network specialists seeking a broad and complete understanding of IoT, CIOs and CIO teams, researchers in IoT and related fields, final year undergraduates, graduate students, post-graduates, and IT and science media professionals.

The Springer publishing house has published a book by associates of the Department of communications systems Urban Kuhar, Gregor Kosec, and Aleš Švigelj entitled Observability of Power-Distribution Systems: State-Estimation Techniques and Approaches. The book is part of the Springer Briefs series. The book describes the design and implementation of a three-phase state estimation that is suitable for power-distribution networks. It gathers all relevant state-of-the-art knowledge and provides the missing pieces to offer readers a complete picture of several essential design and implementation factors and ways to address them. The modelling of all the major power-distribution components to enable a three-phase network model’s construction is described, while sensitivity analyses shows how uncertain conductor lengths influence the state-estimation results.

Založba Springer je objavila knjigo sodelavcev Odseka za komunikacijske sisteme Urban Kuharja, Gregorja Kosca in Aleša Šviglja z naslovom Observability of Power-Distribution Systems: State-Estimation Techniques and Approaches. Knjiga je del serije Springer Briefs. V knjigi je opisana zasnova in izvedba trifaznega ocenjevalnika stanja, ki je primerna za distribucijska električna omrežja. Predstavljen je predlagan poenoten tri-fazni model veje električnega omrežja, s katerim je možno enotno predstaviti vse, za naš problem relevantne, gradnike distribucijskega električnega omrežja. Obravnavani so različni ocenjevalniki stanja. Ovrednotena je tudi občutljivost obravnavanih ocenjevalnikov stanja na majhne napake parametrov modela ter majhne napake meritev v omrežju. njiga je del serije Springer Briefs.

V knjigi sta opisani zasnova in izvedba trifaznega ocenjevalnika stanja, ki sta primerni za distribucijska električna omrežja. Predstavljen je predlagan poenoten trifazni model veje električnega omrežja, s katerim je možno enotno predstaviti vse, za naš problem relevantne, gradnike distribucijskega električnega omrežja. Obravnavani so različni ocenjevalniki stanja. Ovrednotena je tudi občutljivost obravnavanih ocenjevalnikov stanja na majhne napake parametrov modela in majhne napake meritev v omrežju.

Emeritus Scientist

Prof. Gorazd Kandus, now retired...

Prof. Gorazd Kandus, now retired long-time head of Department of Communication Systems, was awarded Emeritus Scientist of the Jozef Stefan Institute (= Zaslužni znanstvenik IJS). Congrats, Gorazd!

Obisk in predavanje izr. prof. dr. Ke Guana, Beijing Jiaotong University

Izr. prof. dr. Ke Guan, Beijing Jiaotong University, je v okviru Slovenske sekcije IEEE in organizaciji Odseka za komunikacijske sisteme E6 vodil predavanje z naslovom...

Izr. prof. dr. Ke Guan, Beijing Jiaotong University, je v okviru Slovenske sekcije IEEE in organizaciji Odseka za komunikacijske sisteme E6 vodil predavanje z naslovom:

Towards Smart Rail Mobility at mm Wave and THz Bands: Challenges, Solutions, and Future Directions

Prof. Guan je v svojem predavanju izpostavil glavne izzive brezžičnih kanalov in predstavil trenutno rešitve na področju pametne mobilnosti. Predstavil je module referenčnih modelov kanalov za železniška okolja za milimetrske in teraherčne radijske pasove. Za obdelavo kompleksnih scenarijev z uporabo tehnike sledenja žarkom je predstavil visoko zmogljivo računsko platformo. Ključne tehnologije, ki jih je predstavil, so združene v prototipnem sistemu MHN-E (Mobile Hotspot Network – Enhanced), ki so ga uspešno demonstrirali na Zimskih olimpijskih igrah v PyongChang-u.

European Conference on Networks and Communications – EuCNC 2018

Ljubljana je v dneh od 18. do 21. junija 2018 gostila Evropsko konferenco o omrežjih in komunikacijah EuCNC.

Ljubljana je v dneh od 18. do 21. junija 2018 gostila Evropsko konferenco o omrežjih in komunikacijah EuCNC (European Conference on Networks and Communications), na kateri je pri izmenjavi mnenj in predstavitvi raziskovalnih dosežkov na področjih razvoja mobilnih komunikacij 5. generacije (5G), izvajanja komunikacijskih storitev v oblaku, virtualizacije in upravljanja omrežij sodelovalo več kot 600 udeležencev iz več kot 30 držav z več kot 200 prispevki in 40 pilotnimi demonstracijami. Tehnični programski odbor sta skupaj vodila izr. prof. dr. Mihael Mohorčič z Odseka za komunikacijske sisteme Instituta “Jožef Stefan” in dr. Mojca Volk s Fakultete za elektrotehniko Univerze v Ljubljani.

Ljubljana gosti mednarodno konferenco EuCNC o tehnologijah 5G

Na konferenci EuCNC letos o tehnologijah pete generacije

Prestižno Puhovo priznanje raziskovalcem Odseka za komunikacijske sisteme

V četrtek, 23. 11. 2017 so podelili najvišje državne nagrade za delo na znanstvenem, raziskovalnem in razvojnem področju.

Puhovo priznanje za pomembne dosežke na področju medicinske opreme je prejela raziskovalno-razvojna skupina strokovnjakov Odseka za komunikacijske sisteme iz Instituta “Jožef Stefan” ter podjetij SAVING in L-TEK za pomemben dosežek na področju mobilnega zdravja. Razvili so prenosni medicinski pripomoček za trajno in natančno spremljanje srčnega ritma SAVVY EKG. Naprava omogoča samostojne in zanesljive meritve delovanja srca, ki jih lahko izvede vsakdo.

Prejemniki nagrade so:

Prof. dr. Roman Trobec, dr. Viktor Avbelj, dr. Matjaž Depolli, dr. Aleksandra Rashkovska Koceva, dr. Gregor Kosec, Tomaž Krištofelc, Klemen Bregar, dr. Ivan Tomašić – vsi raziskovalci Instituta Jožef Stefan, Odsek E6

Uroš Stanič – Zavod BRIS, Ljubljana, Slovenija, Boštjan Barbiš – L-TEK Elektronika d.o.o., Marino M. Samardžija – Saving d.o.

Čestitke!

Experiments with ultra-narrowband networks

A flexible, ultra-narrowband transceiver has been developed at the Department of Communication Systems.

It can be used with the SIGFOX toolbox for rapid development of experiments using a visual editor. An innovative approach combining an embedded CPU and a software defined radio allows the use of original binary modem firmware while at the same time enabling simple modifications to the transmitted waveform and packet data.

A commercial SIGFOX base station has also been installed at the out-door testbed located at the Jožef Stefan Institute campus in Ljubljana. Together with the experimental transceiver, this setup allows for data collection, modeling and optimization of ultra-narrowband low-power wide-area networks.

Jožef Stefan Institute and SIGFOX are partners in the Horizon 2020 project eWINE. eWINE is focusing on improvements to current technologies that would enable dense and dynamic wireless networks of the future. One of the active areas of research is coexistence of different low-power wide-area networks in unlicensed bands. These networks provide connectivity to a large variety of small, constrained devices such as sensors and smart meters, and are predicted to grow considerably with the Internet of Things.

The Best paper Award IEEE ITST 2017

The paper “Challenges and Chances for Smart Rail Mobility at mmWave and THz Bands from the Channels Viewpoint”...

The paper “Challenges and Chances for Smart Rail Mobility at mmWave and THz Bands from the Channels Viewpoint”, authored by Ke Guan, Danping He, Andrej Hrovat, Bo Ai, Zhangdui Zhong, Thomas Kurner, was given the certificate of the Best Paper Award of IEEE 15th International Conference on ITS Telecommunications 2017.

Savvy ECG – a miniature personal ECG monitor

Savvy is a miniature personal device with an on-board ECG sensor for long-term measurement of heart rhythm. It was designed and developed in collaboration with a partner firm Saving d.o.o.. It’s a certified product (CE, medical device), already on sale in Slovenia.

It was designed to offer a multi-day autonomy and a wireless connection (Bluetooth Low Energy) to a Smartphone. The high-quality ECG measurements produced by Savvy are suitable for medical use (observation of atrial P wave for the control of atrial fibrillation and extrasystoles). The device can provide solutions to everyday problems of the medical personal in hospitals, health clinics, homes for the elderly and health resorts. Its exceptionally lightweight design allows for unobstructed use during sports activities or during exhaustive physical work.

Best Paper Award of the IEEE ComSoc Technical Committee Committee on Communications Systems Integration and Modeling

The paper entitled »Network traffic modeling for load prediction: a user-centric approach« published in IEEE Network, authored by two researchers from the Department of communications systems prof. dr. Aleš Švigelj and dr. Kemal Alič and dr. Radovan Sernec from Telekoma Slovenije, was selected for the Best Paper Award of the IEEE ComSoc Technical Committee on Communications Systems Integration and Modeling.

The award will be presented during the prestigious IEEE Globecom 2016 conference held in December in Washington D.C., USA. The paper addresses an innovative user-centric approach to network traffic modelling that was validated and used in the process of introducing, optimizing, and planning of new services at the Slovenian national telecom operator and service provider.

Sodelavca IJS iz Odseka za komunikacijske sisteme prof. dr. Aleš Švigelj in dr. Kemal Alič ter dr. Radovan Sernec iz Telekoma Slovenije, so bili za članek z naslovom »Network traffic modeling for load prediction: a user-centric approach« objavljenem v reviji IEEE Network, izbrani za nagrado »Best Paper Award of the IEEE ComSoc Technical Committee on Communications Systems Integration and Modeling«. Nagrada bo podeljena decembra na prestižni konferenci IEEE GLOBECOM v Washingtonu v ZDA. V članku je predlagan inovativen uporabniško usmerjen pristop k modeliranju prometa v velikih telekomunikacijskih omrežjih, ki je bil ovrednoten in uporabljen pri uvajanju, optimizaciji in načrtovanju novih storitev pri slovenskem nacionalnem ponudniku telekomunikacijskih storitev.

A new four channel AlphaSat Ka- and Q- band receiver station established in Ljubljana

In August 2015, a new beacon receiver station has been set-up at Jozef Stefan Institute in Ljubljana.

It is one of the three European stations with capabilities to measure the 19.7 GHz and 39.4 GHz satellite beacons and their cross-polar components and with capabilities to track the satellite in its geosynchronous orbit. The purpose of the project is to analyse the measured data and to research the atmosphere impacts on the radio wave propagation. Up to now, these effects were rather unexplored, especially at Q-band (39.4 GHz). The results will enable the communication engineers to develop efficient technology at high frequency bands and hence enable high satellite communication throughputs in the order of terabits/s. The results and analyses will be made in the scope of the actions of the European international group ASAPE (Group of the AlphaSat Aldo Paraboni propagation Experimenters).

Measurements and Analysis of Large-Scale Fading Characteristics in Curved Subway Tunnels at 920 MHz, 2400 MHz, and 5705 MHz

he paper titled “Measurements and Analysis of Large-Scale Fading Characteristics in Curved Subway Tunnels at 920 MHz, 2400 MHz, and 5705 MHz” written...

The paper titled “Measurements and Analysis of Large-Scale Fading Characteristics in Curved Subway Tunnels at 920 MHz, 2400 MHz, and 5705 MHz” written in collaboration with State Key Laboratory of Rail Traffic Control and Safety, Beijing Jiaotong University, China and Universidad Politécnica de Madrid, Spain has been published in IEEE Transactions on Intelligent Transportation Systems.

Sensing TVWS spectrum in London

As part of activities in the FP7 CREW project the Department of Communication Systems at JSI installed two VESNA SNE-ESTHER devices in London.

SNE-ESHTER is a radio receiver for the UHF band designed at JSI based on the VESNA sensor platform. Installed devices will be used for advanced spectrum sensing, contributing to the large scale Ofcom TV White Spaces pilot. One device was installed on the roof of a building in the King’s College London Strand campus and the other on the roof of Queen Mary University London. Long term measurements will be used to support the experimentation with advanced, so called cognitive radio devices, as secondary users in currently unused parts of the spectrum.

VESNA-based Intelligent Motorhome

See our intelligent, VESNA based moving lab developed in collaboration with Adria Mobil.

Jozef Stefan Institute and Adria Mobil, one of the leading European manufacturers of caravans and motorhomes, are collaboratively developing and implementing a prototype of an intelligent motorhome. The novel concept, which is referred to as Adria moving lab, focuses on hardware enablers and intelligent software that automates the motorhome and improves user experience. The goal is to build a smart motorhome that understands user needs, autonomously adapts to its users and environment, and consequently improves the comfort, safety and energy efficiency. The motorhome is equipped with multiple sensor-actutor units based on VESNA hardware platform that connected into a wired bus network, gather the data and forwarding it to software for real-time data analysis based on the QMiner data analytics platform. The latter is compiled for the BeagleBone platform and AI reasoning. The new integrated technology upgrades an existing service and enables smarter use of energy sources and more flexible control of heating, lighting, water supply etc.

VESNA Based Air Quality Monitoring

VESNA is now also used for air quality monitoring.

The VESNA-based platforms as planned within the project were primarily designed for the use as personal/portable sensor units in selected pilot cities (Belgrade, Ljubljana and Vienna). However, functionally the same unit with some further sensors for context enrichment will also be used as a reference static outdoor platform for relative calibration and the same unit with different set of sensors could be used as an indoor platform. The version for initial Phase 1 tests in pilot cities has been developed in the form of a personal sensor unit.

To learn more about VESNA Based Air Quality Monitoring, navigate the tabs of this site.

Extended LOG-a-TEC cognitive radio facility

The LOG-a-TEC cognitive radio facility has been extended with a new TV white space receiver and the ProtoStack tool.

LOG-a-TEC covers a set of diverse testbeds used for research purposes. It initially started 7 years ago as an outdoor environmental sensing facility, it evolved towards spectrum sensing and cognitive radio as its largest component. It is also covering application areas (verticals) such as photovoltaics, air quality and automotive. More recently, it is evolving towards a comprehensive heterogeneous M2M/MTC/dense IoT setup comprising LR-WPAN and LPWAN technologies. The one thing all setups have in common is that they are based on a version of the VESNA hardware platform which can be used as standalone or combined with other more powerful machines. VESNA is a modular and configurable embedded hardware platform developed by SensorLab.

To learn more about LOG-a-TEC, navigate the tabs of this site.

A Survey of Radio Propagation Modeling for Tunnels

A comprehensive paper entitled “A Survey of Radio Propagation...

A comprehensive paper entitled “A Survey of Radio Propagation Modeling for Tunnels” by Andrej Hrovat et al has just been published in IEEE Communications Surveys and Tutorials.

Experimental coexistence

The CREW OC2 project CREWTV (Feb. 1 2013 March 31 2014) focuses ...

The CREW OC2 project CREWTV (Feb. 1 2013 March 31 2014) focuses on the experimental coexistence in TV bands and will involve the LOGaTEC testbed where also the final demonstration will be given.

Talk about VESNA and Cognitive radio

Tomaz talked about VESNA and Cognitive...

Tomaz talked about VESNA and Cognitive radio in Kibepipa (talk in Slovenian).

CREW repository

The CREW repository containing information such as full ...

The CREW repository containing information such as full experiment descriptions, traces, background environments, processing script and performance metrics and benchmarking scores is now available here.