Joint Scheduling Scheme for eMBB/URLLC Based on Multi-User Superposition Transmission

Amid the rise of Sixth Generation (6G) wireless net-works, expected to support vast connectivity and highly reliable transmissions, devising methods for efficient spectrum reuse is vital. This paper delves into the coexistence challenges facing enhanced Mobile Broadband (eMBB) and Ultra-Reliable Low Latency Communications (URLLC) services in cellular networks, proposing a superposition framework for transmitting multiple URLLC packets alongside a single eMBB user's signal. We've developed a mathematical model and formulated the URLLC allocation as a mixed-integer non-linear program (MINLP) to optimize URLLC admission rates and eMBB rate loss. We utilize one-to-many bipartite matching for eMBB-URLLC pairings and adopt the Non-Orthogonal Multiple Access (NOMA) for superim-posed transmissions, with a power allocation model. For unpaired users, a puncturing approach is used. The subsequent simulation showcases substantial performance gains from our approach.