Sandra Lagén

Ico_CTTC
Sandra Lagén | CTTC

Open Simulations (OpenSim)

Phd , Researcher

Phone: +34 93 645 29 00

Sandra Lagén received the Telecommunication Engineering degree, the Master’s degree, and the Ph.D. degree (with honors) from Universitat Politècnica de Catalunya (UPC), Barcelona, Spain, in 2011, 2013, and 2016, respectively. From 2010 to 2011, she was with Abertis Telecom, Barcelona, as an internship for projects related to infrastructures for surveillance and smart cities. From 2012 to 2017 she was a research assistant in the Signal Processing and Communications group at UPC, where she carried out her Ph.D. thesis “Coordination Strategies for Interference Management in MIMO Dense Cellular Networks” thanks to a Spanish Ministry of Education grant (FPU). At that time, she participated in two FP7-ICT projects funded by the European Commission (FREEDOM and TROPIC), a collaborative project with Huawei on flexible duplexing for 5G systems, and various projects funded by MINECO (MOSAIC, DISNET, and 5G-RUNNER). She contributed to 3GPP standardization; being UPC the first university world-wide contributing to 3GPP LTE-A. In 2015, she did a three-month research appointment at Nokia Networks and Aalborg University in Aalborg, Denmark. She joined CTTC in 2017, where she currently is a Senior Researcher in the Mobile Networks Department of the Communication Networks Division. In CTTC, she has participated in collaborative projects with InterDigital about 5G NR, NR-U design and coexistence studies with Wi-Fi (leading the research and code design WPs); a grant from the NIST (National Institute of Standards and Technology) – US Dept. Commerce to accelerate V2X communications; and a project from the LLNL (Lawrence Livermore National Lab) – US Dept. of Defense about spectrum sharing. Also, she was the Principal Investigator in a collaborative project with Huawei-Sweden on fronthaul compression control for next-generation RAN, and she is the Principal Investigator of a collaborative project with Meta-Facebook about cellular and coexistence studies for AR/VR use cases. Also, she has participated in the ITN Scavenge and ITN Greenedge (European training networks), supervising PhD students. Since 2021, she is member of the executive board of ns-3 consortium.

In 2017, she was awarded by COIT the best national Ph.D. thesis on high-speed broadband mobile communications, sponsored by Orange. The Ph.D. thesis also received the UPC’s Premio Extraordinario de Doctorado in 2019. Also, in 2012 she was awarded by Red.es the best final project in Telecommunications Engineering in the area of Information Systems, and in 2013 by COIT the best national Master Thesis on Analysis and Optimization of Wireless Networks, sponsored by Ingenia Telecom. She is the co-recipient of the IEEE WCNC 2018 best paper award and the 2020 WNS3 best paper award. She is co-inventor in two non-provisional patent applications granted, three provisional applications, and has participated in several contributions to 3GPP-LTE release 11 and 12. Her main research interests are in designing and analyzing wireless communication systems and network protocols with emphasis on cross-layer optimizations, especially with PHY and MAC layers.

She holds the AQU Research accreditation and is IEEE Senior member.

ORCID ID: https://orcid.org/0000-0003-4986-5104

Scopus Author ID: 47061381500

WoS Researcher ID: K-7542-2017

Google scholar profile: https://scholar.google.com/citations?user=_H0oJkMAAAAJ

 

MISCELLANEOUS

Scientific Journal papers 

16 journal papers. 14 journals in Q1, 2 articles in Q2.

Citations 

600 citations / h-index=14 / i10 index= 21 (Google scholar).

Highlights 

2 best paper awards: IEEE WCNC 2018 and WNS3 2020.

IPR

2 non-provisional applications granted, 3 provisional applications.

Project participation

4 EU projects (TROPIC, FREEDOM, SCAVENGE, GREENEDGE), 4 National (MOSAIC, DISNET, 5GRUNNER, 5GREFINE), 7 industrial (Huawei-China, Huawei-Sweden, InterDigital Communications (2), NIST, LLNL, Meta-Facebook).
Project participation and project leader at CTTC (since 2017) Participation in 9 projects: 1 national, 6 industrials, 2 EU.In two industrial projects (Huawei-Sweden and Meta-Facebook), she has acted as Principal Investigator. In the other industrial projects and the national project, she has lead WPs and tasks. Also, she has participated in the definition of project proposals, with direct communications as CTTC representative with important companies.

PhD, Master thesis, GSoC supervision 

2 master thesis (in telecom and aerospace sectors). 1 PhD research stage supervision. 1 Google Summer of Code supervision. 1 (ongoing) PhD supervision.

Invited talks/keynotes

6: 2 international (technical), 4 national (1 technical and 3 informative, in STEAM like programs).

Contribution to Conferences

29 contributions to conferences.

Contributions to 3GPP and 3GPP TRs

12 technical contributions: 1 to LTE Rel-11, 11 to LTE Rel-12. Notably, the results were included in 3GPP TR 36.874 (LTE Rel-12).
Grants FI and FPU to pursue and complete the PhD. FPU mobility grant. EnginyCat grant (teaching). Introduction to research grant.
Awards 2 awards for the PhD thesis: COIT best national PhD thesis award (2017) and UPC Extraordinary award (2019). 2 awards for the master thesis: Red.es award (best thesis in UPC-TelecomBcn, 2012), COIT best national master thesis (2013). CIRIT award (bachelor research project, 2016). Caixa Manresa award (selectivity marks, 2016). Coca-Cola Catalan&Spanish awards (writing, 2013).

Courses and workshops   organizations

She co-organized the CTTC Workshop 2018, and has co-chaired multiple sessions in international conferences.

Stages

3-month research stage at Nokia Networks, Aalborg (Denmark), in 2015.
 ns-3 design and development She participates in the design and development of the modules: 5G NR, NR-U and NR V2X (details can be found here). She is member of the executive board of ns-3 consortium.
Research Habilitations She holds the Acreditació de Recerca by Catalan Agency for the Quality of the University System (AQU) (Nov. 2020). She is IEEE Senior Member (Feb. 2021).
Deep Attention Recognition for Attack Identification in 5G UAV Scenarios: Novel Architecture and End-to-End Evaluation
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY. Vol. 73. No. 1. pp. 131-146 January 2024.
Viana J., Farkhari H., Sebastiao P., Campos L.M., Koutlia K., Bojovic B., Lagen S., Dinis R.
10.1109/TVT.2023.3302814 Google Scholar
Is Music in the Air? Evaluating 4G and 5G Support for the Internet of Musical Things
IEEE Access. Vol. 12. pp. 38081-38101 January 2024.
Vignati L., Nardini G., Centenaro M., Casari P., Lagen S., Bojovic B., Zambon S., Turchet L.
10.1109/ACCESS.2024.3374641 Google Scholar
Attack Identification and Classification in V2X Scenarios
2024 23rd International Symposium Infoteh-Jahorina, Infoteh 2024 - Proceedings. January 2024.
Timcenko V., Rakas S.B., Morancho S.L., Bojovic B., Koutlia K., Haro C.A.
10.1109/INFOTEH60418.2024.10495939 Google Scholar
An open-source implementation and validation of 5G NR configured grant for URLLC in ns-3 5G LENA: A scheduling case study in industry 4.0 scenarios
JOURNAL OF NETWORK AND COMPUTER APPLICATIONS. Vol. 215. April 2023.
Larrañaga A., Lucas-Estañ M.C., Lagén S., Ali Z., Martinez I., Gozalvez J.
10.1016/j.jnca.2023.103638 Google Scholar
Fronthaul-Aware Scheduling Strategies for Dynamic Modulation Compression in Next Generation RANs
IEEE TRANSACTIONS ON MOBILE COMPUTING. Vol. 22. No. 5. pp. 2725-2740 January 2023.
Lagen S., Gelabert X., Giupponi L., Hansson A.
10.1109/TMC.2021.3128700 Google Scholar
System analysis of QoS schedulers for XR traffic in 5G NR
SIMULATION MODELLING PRACTICE AND THEORY. Vol. 125. January 2023.
Koutlia K., Bojovic B., Lagén S., Zhang X., Wang P., Liu J.
10.1016/j.simpat.2023.102745 Google Scholar
Enhancing 5G QoS Management for XR Traffic Through XR Loopback Mechanism
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS. Vol. 41. No. 6. pp. 1772-1786 January 2023.
Bojovic B., Lagen S., Koutlia K., Zhang X., Wang P., Yu L.
10.1109/JSAC.2023.3273701 Google Scholar
Enabling QoS Provisioning Support for Delay-Critical Traffic and Multi-Flow Handling in ns-3 5G-LENA
Acm International Conference Proceeding Series. pp. 45-51 January 2023.
Koutlia K., Lagen S., Bojovic B.
10.1145/3592149.3592159 Google Scholar
Improving the Efficiency of MIMO Simulations in ns-3
Acm International Conference Proceeding Series. pp. 1-9 January 2023.
Pagin M., Lagén S., Bojovic B., Polese M., Zorzi M.
10.1145/3592149.3592167 Google Scholar
QoS Management for XR Traffic in 5G NR: A Multi-Layer System View and End-To-End Evaluation
IEEE COMMUNICATIONS MAGAZINE. Vol. 61. No. 12. pp. 192-198 January 2023.
Lagen S., Bojovic B., Koutlia K., Zhang X., Wang P., Qu Q.
10.1109/MCOM.015.2200745 Google Scholar
Calibration of the 5G-LENA system level simulator in 3GPP reference scenarios
SIMULATION MODELLING PRACTICE AND THEORY. Vol. 119. May 2022.
Koutlia, K, Bojovic, B, Ali, Z, Lagen, S
10.1016/j.simpat.2022.102580 Google Scholar
Enabling NGMN Mixed Traffic Models for ns-3
Acm International Conference Proceeding Series. pp. 127-134 January 2022.
Bojovic B., Lagen S.
10.1145/3532577.3532602 Google Scholar
ns-3 and 5G-LENA Extensions to Support Dual-Polarized MIMO
Acm International Conference Proceeding Series. pp. 1-9 January 2022.
Bojovic B., Ali Z., Lagen S.
10.1145/3532577.3532595 Google Scholar
Fronthaul Compression Control for Shared Fronthaul Access Networks
IEEE COMMUNICATIONS MAGAZINE. Vol. 60. No. 10. pp. 36-42 January 2022.
Lagen, S., Gelabert, X., Hansson, A., Requena, M., Giupponi, L.
10.1109/MCOM.001.2100959 Google Scholar
A Convolutional Attention Based Deep Learning Solution for 5G UAV Network Attack Recognition over Fading Channels and Interference
IEEE Vehicular Technology Conference Proceedings. Vol. 2022-September. January 2022.
Viana J., Farkhari H., Campos L.M., Sebastiao P., Koutlia K., Lagen S., Bernardo L., Dinis R.
10.1109/VTC2022-Fall57202.2022.10012726 Google Scholar
Novel radio environment map for the ns-3 NR simulator
Acm International Conference Proceeding Series. pp. 41-48 January 2021.
Koutlia K., Bojovic B., Lagén S., Giupponi L.
10.1145/3460797.3460803 Google Scholar
Extending the ns-3 spatial channel model for vehicular scenarios
Acm International Conference Proceeding Series. pp. 25-32 January 2021.
Zugno T., Drago M., Lagén S., Ali Z., Zorzi M.
10.1145/3460797.3460801 Google Scholar
Realistic beamforming design using SRS-based channel estimate for ns-3 5G-LENA module
Acm International Conference Proceeding Series. pp. 81-87 January 2021.
Bojovic B., Lagén S., Giupponi L.
10.1145/3460797.3460809 Google Scholar
3GPP NR V2X Mode 2: Overview, Models and System-Level Evaluation
IEEE Access. Vol. 9. pp. 89554-89579 January 2021.
Ali, Z, Lagen, S, Giupponi, L, Rouil, R
10.1109/ACCESS.2021.3090855 Google Scholar
Modulation compression in next generation RAN: Air interface and fronthaul trade-offs
IEEE COMMUNICATIONS MAGAZINE. Vol. 59. No. 1. pp. 89-95 January 2021.
Lagen, S, Giupponi, L, Hansson, A, Gelabert, X
10.1109/MCOM.001.2000453 Google Scholar
Semi-Static Modulation Compression Optimization for Next Generation RANs
IEEE International Conference on Communications. January 2021.
Lagen, S, Gelabert, X, Giupponi, L, Hansson, A
10.1109/ICC42927.2021.9500626 Google Scholar
Fronthaul-Aware Scheduling Strategies for Next Generation RANs
2021 Ieee Global Communications Conference, Globecom 2021 - Proceedings. January 2021.
Lagen S., Gelabert X., Giupponi L., Hansson A.
10.1109/GLOBECOM46510.2021.9685992 Google Scholar
On the impact of numerology in NR V2X Mode 2 with sensing and random resource selection
IEEE Vehicular Networking Conference. Vol. 2021-November. pp. 151-157 January 2021.
Ali, Z, Lagen, S, Giupponi, L
10.1109/VNC52810.2021.9644618 Google Scholar
New Radio Beam-Based Access to Unlicensed Spectrum: Design Challenges and Solutions
IEEE Communications Surveys and Tutorials. Vol. 22. No. 1. pp. 8-37 January 2020.
Lagen, S., Giupponi, L., Goyal, S., Patriciello, N., Bojovic, B., Demir, A., Beluri, M.
10.1109/COMST.2019.2949145 Google Scholar
NR-U and IEEE 802.11 technologies coexistence in unlicensed mmWave spectrum: Models and evaluation
IEEE Access. Vol. 8. pp. 71254-71271 January 2020.
Patriciello, N., Lagen, S., Bojovic, B., Giupponi, L.
10.1109/ACCESS.2020.2987467 Google Scholar
Wake-Up Scheduling for Energy-Efficient Mobile Devices
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS. Vol. 19. No. 9. pp. 6020-6036 January 2020.
Rostami, S., Trinh, H.D., Lagen, S., Costa, M., Valkama, M., Dini, P.
10.1109/TWC.2020.2999339 Google Scholar
Proactive Wake-up Scheduler based on Recurrent Neural Networks
IEEE International Conference on Communications. Vol. 2020-June. January 2020.
Rostami, S., Trinh, H.D., Lagen, S., Costa, M., Valkama, M., Dini, P.
10.1109/ICC40277.2020.9148671 Google Scholar
New Radio Physical Layer Abstraction for System-Level Simulations of 5G Networks
IEEE International Conference on Communications. Vol. 2020-June. January 2020.
Lagen, S., Wanuga, K., Elkotby, H., Goyal, S., Patriciello, N., Giupponi, L.
10.1109/ICC40277.2020.9149444 Google Scholar
Cellular and Wi-Fi in unlicensed spectrum: Competition leading to convergence
2nd 6g Wireless Summit 2020: Gain Edge For The 6g Era, 6g Summit 2020. January 2020.
Lagen, Sandra, Patriciello, Natale, Giupponi, Lorenza
10.1109/6GSUMMIT49458.2020.9083786 Google Scholar
Wake-Up Radio Based Access in 5G under Delay Constraints: Modeling and Optimization
IEEE TRANSACTIONS ON COMMUNICATIONS. Vol. 68. No. 2. pp. 1044-1057 January 2020.
Rostami, S., Lagen, S., Costa, M., Valkama, M., Dini, P.
10.1109/TCOMM.2019.2954389 Google Scholar
An E2E simulator for 5G NR networks
SIMULATION MODELLING PRACTICE AND THEORY. Vol. 96. January 2019.
Patriciello, N, Lagen, S, Bojovic, B, Giupponi, L
10.1016/j.simpat.2019.101933 Google Scholar
The impact of NR scheduling timings on end-to-end delay for uplink traffic
2019 Ieee Global Communications Conference (globecom). January 2019.
Patriciello N., Lagen S., Giupponi L., Bojovic B.
10.1109/GLOBECOM38437.2019.9013231 Google Scholar
Optimized wake-up scheme with bounded delay for energy-efficient MTC
2019 Ieee Global Communications Conference (globecom). January 2019.
Rostami S., Lagen S., Costa M., DIni P., Valkama M.
10.1109/GLOBECOM38437.2019.9013534 Google Scholar
An improved MAC layer for the 5G NR ns-3 module
Acm International Conference Proceeding Series. pp. 41-48 January 2019.
Patriciello N., Lagen S., Giupponi L., Bojovic B.
10.1145/3321349.3321350 Google Scholar
Efficient Use of the Spectrum in Small Cell Deployments for 5G Wireless Communications Networks
Frontiers in Science and Engineering. Vol. 7. No. 1. February 2018.
S. Lagen, A. Agustin, J. Vidal
Google Scholar
Performance analysis of feedback-free collision resolution NDMA protocol
EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING. Vol. 2018. No. 1. January 2018.
Lagen, S, Agustin, A, Vidal, J, Garcia, J
10.1186/s13638-018-1049-x Google Scholar
Implementation and evaluation of frequency division multiplexing of numerologies for 5G new radio in ns-3
Workshop On Network Simulator (ns)-3 (wns3 2018). pp. 37-44 January 2018.
Bojovic, B, Lagen, S, Giupponi, L, Assoc Comp Machinery
10.1145/3199902.3199905 Google Scholar
Paired Listen Before Talk for multi-RAT Coexistence in Unlicensed mmWave Bands
Ieee International Conference On Communications Workshops. January 2018.
Lagen, S, Giupponi, L, Bojovic, B, Demir, A, Beluri, M
Google Scholar
Listen before receive for coexistence in unlicensed mmWave bands
IEEE Wireless Communications and Networking Conference. Vol. 2018-April. pp. 1-6 January 2018.
Lagen, S, Giupponi, L
10.1109/WCNC.2018.8377293 Google Scholar
5G New Radio Numerologies and their Impact on the End-To-End Latency
IEEE International Workshop on Computer Aided Modeling and Design of Communication Links and Networks. Vol. 2018-September. pp. 44-49 January 2018.
Patriciello, N, Lagen, S, Giupponi, L, Bojovic, B
10.1109/CAMAD.2018.8514979 Google Scholar
LBT Switching Procedures for New Radio-Based Access to Unlicensed Spectrum
2018 Ieee Globecom Workshops (gc Wkshps). January 2018.
Lagen S., Giupponi L., Patriciello N.
10.1109/GLOCOMW.2018.8644176 Google Scholar
Subband Configuration Optimization for Multiplexing of Numerologies in 5G TDD New Radio
2018 Ieee 29th Annual International Symposium On Personal, Indoor And Mobile Radio Communications (pimrc). Vol. 2018-September. January 2018.
Lagen S., Bojovic B., Goyal S., Giupponi L., Mangues-Bafalluy J.
10.1109/PIMRC.2018.8580813 Google Scholar
Paired listen before talk for multi-RAT coexistence in unlicensed mmWave Bands
2018 Ieee International Conference On Communications Workshops (icc Workshops). pp. 1-6 January 2018.
Lagen S., Giupponi L., Bojovic B., Demir A., Beluri M.
10.1109/ICCW.2018.8403586 Google Scholar
Energy Efficiency in Latency-Constrained Application Offloading from Mobile Clients to Multiple Virtual Machines
IEEE TRANSACTIONS ON SIGNAL PROCESSING. Vol. 66. No. 4. pp. 1065-1079 January 2018.
Lagen S., Pascual-Iserte A., Munoz O., Vidal J.
10.1109/TSP.2017.2778692 Google Scholar
LBT Switching Procedures for New Radio-based Access to Unlicensed Spectrum
Ieee Globecom Workshops. January 2018.
Lagen, S, Giupponi, L, Patriciello, N
Google Scholar
On the Superiority of Improper Gaussian Signaling in Wireless Interference MIMO Scenarios
IEEE TRANSACTIONS ON COMMUNICATIONS. Vol. 64. No. 8. pp. 3350-3368 August 2016.
S. Lagen, A. Agustin, J. Vidal
10.1109/TCOMM.2016.2584601 Google Scholar
Coexisting Linear and Widely Linear Transceivers in the MIMO Interference Channel
IEEE Transactions on Signal Processing. Vol. 64. No. 3. pp. 652-664 February 2016.
S. Lagen, A. Agustin, J. Vidal
Google Scholar
Decentralized Coordinated Precoding for Dense TDD Small Cell Networks
IEEE Transactions on Wireless Communications. Vol. 14. No. 8. pp. 4546-4561 August 2015.
S. Lagen, A. Agustin, J. Vidal
Google Scholar
Network-MIMO for downlink in-band relay transmissions
EURASIP Journal on Wireless Communications and Networking. February 2013.
S. Lagen, A. Agustin, J. Vidal
Google Scholar
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Researcher R2
Researcher R3