This letter proposes a scheme assisted by a reconfigurable intelligent surface (RIS) for efficient uplink traffic multiplexing between enhanced mobile broadband (eMBB) and ultra-reliable-low-latency communication (URLLC). The scheme determines two RIS configurations based only on the eMBB channel state information (CSI) available at the base station (BS). The first optimizes eMBB quality of service, while the second reduces eMBB interference in URLLC traffic by temporarily silencing the eMBB traffic. Numerical results demonstrate that this approach, relying solely on eMBB CSI and without BS coordination, can outperform the state-of-the-art preemptive puncturing by 4.9 times in terms of URLLC outage probability.

翻译：本文提出一种可重构智能表面（RIS）辅助的上行链路高效业务复用方案，同时支持增强型移动宽带（eMBB）与超可靠低时延通信（URLLC）。该方案仅依据基站（BS）可获取的eMBB信道状态信息（CSI）确定两种RIS配置：第一种优化eMBB服务质量，第二种通过临时静默eMBB业务降低其对URLLC业务的干扰。数值结果表明，该方案在仅依赖eMBB的CSI且无需基站协调的条件下，可将URLLC中断概率相比现有最优抢占式方案降低4.9倍。