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In this paper, a novel multi-objective resource allocation scheme is proposed for downlink joint enhanced mobile broadband (eMBB) and ultra reliable low latency communication (URLLC) traffic with different quality-of-service (QoS) requirements. eMBB and URLLC are two service categories in the emerging fifth generation (5G) cellular networks which encompass applications with high throughput and stringent latency and reliability demands, respectively. To meet these heterogeneous requirements, 5G networks need impressive improvements in the air interface and core network architecture. In this paper, by applying a scalarization method for multi- objective optimization, both the eMBB and URLLC performance in the downlink channel are improved. Different types of URLLC users with various latency requirements are considered. To further enhance the reliability, the URLLC users with stringent delay demands are prioritized over the users with looser latency needs. In the simulation results, the performance of the proposed resource allocation policy is assessed and it is shown that our introduced scheme can achieve higher reliability and lower delay for the URLLC traffic compared with the other approaches in the literature. |
