Tampere University and Ericsson Research Win Best Paper Award at IEEE VTC Spring 2026 for 6G Sensing Study

"Native support for ISAC and establishing corresponding situational awareness is one of the genuinely new capabilities in emerging 6G networks, with major added value expected in applications such as connected vehicles and defense or dual-use systems," notes Professor Mikko Valkama from Tampere University, a co-author of the study. 

When autonomous vehicles rely solely on cameras or lidar, blind spots and poor visibility create safety gaps. While sharing sensor data via collaborative radio simultaneous localization and mapping (SLAM) can fill these gaps, unconstrained communication threatens to overwhelm next-generation networks with massive amounts of data. The award-winning 2026 IEEE VTC research addresses this bottleneck by establishing mathematical performance bounds for collaborative radio SLAM. By demonstrating diminishing returns from additional data sharing, where excessive data sharing ceases to yield better positioning accuracy, the study helps identify when additional data sharing provides little further improvement in positioning and mapping accuracy. These findings could help engineers limit unnecessary network data exchange while working toward reliable, cooperative environmental sensing in dense urban environments. 

The study models centralized multi-user radio SLAM within heavy traffic environments. By calculating a posterior Cramér-Rao bound, a theoretical lower bound for tracking and mapping errors, the authors established algorithm-independent performance limits for tracking vehicles and mapping landmarks simultaneously. Ultimately, this framework reveals how mapping performance scales as vehicle density grows, showing where additional data sharing begins to provide diminishing returns. 

"Understanding the value of collaboration among network nodes is crucial to developing practical ISAC deployments with implementation-feasible signaling overheads and processing requirements," Valkama explains. 

The paper, “Improving Radio SLAM via Information Sharing: Collaborative Performance Bounds”, was authored by Radovan Juran, Julia Equi, Dr. Ossi Kaltiokallio, Dr. Jukka Talvitie, Prof. Simona Lohan, and Prof. Mikko Valkama. As the premier semi-annual conference of the IEEE Vehicular Technology Society, VTC brings together international experts across industry and academia to advance technologies at the physical and medium access control layers for mobile infrastructure and intelligent transportation systems. The research was carried out under the Horizon Europe MSCA doctoral network entitled MiFuture (https://mifuture.tsc.uc3m.es/).