El grup de recerca de Xarxes definides per software (SN) impulsa les capacitats de les xarxes de nova generació mitjançant l’automatització, la intel·ligència, la federació i la integració. Amb el pas progressiu d’infraestructures centralitzades cap a models distribuïts, el grup aborda reptes de gestió de recursos. El grup combina IA, automatització i integració per simplificar la gestió de xarxes complexes per garantir escalabilitat, fiabilitat i eficiència per a aplicacions i serveis de nova generació.
Group leader
Pouria Sayyad Khodashenas
Àrees
Xarxes definides per software
Sergio Giménez-Antón, Eduard Grasa, Jordi Perelló, Maryan Rizinski, Mohammadreza Mosahebfard, John Day, Lubomir Chitkushev, Topological forwarding for LEO constellations: A scope-specific routing policy in a recursive user-plane architecture, Computer Networks, 2026, 112923, ISSN 1389-1286, https://doi.org/10.1016/j.comnet.2026.112923. (https://www.sciencedirect.com/science/article/pii/S1389128626009357) Abstract: A Low Earth Orbit (LEO) mega-constellation never stops moving, yet Internet Protocol (IP)-based routing ties each satellite’s forwarding state to constellation size and recomputes routes as the shell turns. We treat routing instead as a policy of one layer of the 6G Recursive User Plane Architecture (6G-RUPA), in which a satellite’s address states its position in the shell, so that forwarding becomes arithmetic: a distance policy prices the remaining path in kilometers from seven shell constants and the clock, a progress guard keeps every walk loop-free, and exception entries repair what failures break. We test the scheme in LEOPath, an open-source simulator, on four constellations and eleven shells from published filings, with Ring, +Grid, open-seam and three-laser brick-wall wirings and fifteen failure conditions, against link-state and explicit-path routing and a hop-only ablation. Per-satellite forwarding state, a proxy for router memory, falls from 351-1584 routes to the node degree, and where a full link-state table rewrites 12 to 65 routes per satellite and minute as a failure-free shell moves, a topological satellite rewrites none. Under the same addresses, forwarding matches the mean path length and delay of link-state without failures and, with northbound addresses, its delivery under failures, on paths up to 13% longer. At realistic failure rates the busiest satellite holds 25 to 474 exact exception entries, which group into 3 to 8 address regions. The price moves to the edge, as station renumbering and 7-22 ms of extra delay for attachment addressing, which a second address per station roughly halves. Whether smaller tables save lookup energy remains untested. Keywords: Routing; LEO satellites; 6G-RUPA; Satellite networks; Topological routing; Network scalability; Network architecture
M. Mosahebfard, A. Cárdenas and L. Tomaszewski, «Towards Seamless Integration of terrestrial and Non-Terrestrial 6G Networks: An NFV-SDN Framework for Infrastructure Mobility Management,» in IEEE Open Journal of the Communications Society, vol. 7, Jun. 2026. doi: 10.1109/OJCOMS.2026.3705345
M. Masoumi, E. Carmona-Cejudo, I. de Miguel, C. Torres-Pérez, R.J. Durán Barroso, «Dynamic Joint Scheduling of Movement and Data Processing Tasks using Extreme-Edge Computing in Multi-AGV Scenarios,» in IEEE Open Journal of the Industrial Electronics Society, in press.
C. Torres-Pérez, E. Carmona-Cejudo, C. Cervelló-Pastor, M. Masoumi, E. Coronado and M. S. Siddiqui, «Service Placement in Dynamic Multi-AGV Environments for Minimized Energy Consumption,» in IEEE Robotics and Automation Letters, vol. 11, no. 1, pp. 714-721, Jan. 2026, doi: 10.1109/LRA.2025.3636026
@article{palomares2025hardware, author = {Palomares, Javier and Coronado, Estefanía and Tzenetopoulos, Achilleas and Lentaris, George and Cervelló-Pastor, Cristina and Siddiqui, Muhammad Shuaib}, title = {Hardware-Accelerated Edge AI Orchestration on the Multi-Tier Edge-to-Cloud Continuum}, journal = {Journal of Network and Systems Management}, year = {2025}, doi = {10.1007/s10922-025-09959-4}, publisher = {Springer Nature} }
H. Chergui, F. Rezazadeh, M. Debbah, and C. Verikoukis, “A tutorial on cognitive biases in agentic AI-driven 6G autonomous networks,” IEEE Open Journal of the Communications Society (Accepted)
8 de juny de 2026
21 de març de 2025
6 de març de 2025
3 d’octubre de 2024
1 d’agost de 2024
24 d’octubre de 2022
21 d’octubre de 2022
16 de setembre de 2022
7 de febrer de 2022
3 de febrer de 2022