Selective Redundant MP-QUIC for 5G Mission Critical Wireless Applications

In this paper we propose a multi-connectivity protocol suited for for mission critical applications that use wireless 5G multi-UE devices. It extends the MP-QUIC protocol by adding selective data duplication with strict prioritization to support a mix of critical and non-critical applications on a single end-to-end connection; e.g. suitable for self-driving cars getting mission critical drive control commands from the network (priority) while receiving map-updates (background). The Selective Redundant MP-QUIC solution thus simultaneously provides bandwidth aggregation and higher speeds for background data while ensuring maximum reliability and availability for the priority data. The proposed algorithm is first evaluated using a emulated fixed-delay channel as well as a well-known IEEE/IETF Internet connection model. Next, a highway drive test is conducted using two LTE modems, resembling a typical autonomous car scenario. The tests show that the algorithm can protect the critical data flow also in presence of very high background load of 10 Mbps and across a wide range of channel conditions. Using our proposed MP-QUIC solution over two LTE connections, the 99.9% guaranteed critical traffic latency improves 5 times versus using a single-path connection and 3 times versus using state of the art MP-QUIC protocols