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Regional Multi-RAT Dual Connectivity Management for Reliable 5G V2X Communications

Abstract:

Release 16 of the Third Generation Partnership Project (3GPP) standards contains the first set of Fifth Generation (5G) Vehicte-to-Anything (V2X) specifications based on the New Radio (NR) interface. The coexistence of NR and Long Term Evolution (LTE) V2X rollouts paves the way for communications involving multiple Radio Access Technologies (multi-RAT). From 5G-CARMEN project viewpoint, non-standalone multi-RAT Dual Connectivity (MR-DC) architectures enable support of cross-border Cooperative, Connected and Automated Mobility use cases with stringent requirements. However, the joint coordination of multiRAT, cross-RAT, and sidelink interfaces is still a complex issue. This paper presents an MR-DC aware, regional multi-RAT management (MRM) entity, particularizing such approach for improving the reliability of 5GV2X through the use of redundant transmissions. A comparative study is carried out in MATLAB targeting a proof-ofconcept scenario on the 5G-CARMEN project corridor. Simulation results show better Packet Reception Ratio (PRR) performance when the MRM entity is enabted.