Abstract
Multi-connectivity with packet duplication across multiple links is a potential solution for the 5G ultra-reliable low latency communication (URLLC). However, the multi-link adaptation becomes a quite challenging problem of selecting not only the modulation and coding scheme (MCS) but also the appropriate links and per link decoding error targets, for efficient radio resource utilization while satisfying the users’ quality of service (QoS) requirements. We address these challenges in this work. Our proposed solution comprises: physical layer abstraction - a useful technique to adapt the MCS and links jointly - with more number of MCS values; short packet communication; 5G physical layer enablers like flexible numerology; and a novel time-frequency resource scheduling. Simulation results show that the proposed solution provides more efficient resource allocation, while satisfying the URLLC users’ QoS requirements, as compared to the existing schemes.
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