This paper introduces a novel physical-layer method labelled as Multi-Modal Concurrent Transmission (MMCT) for efficient transmission of multiple data streams with different reliability-latency performance requirements. The MMCT arranges data from multiple streams within a same physical-layer transport block wherein stream-specific modulation and coding scheme (MCS) selection is combined with joint mapping of modulated codewords to Multiple-Input Multiple-Output spatial layers and frequency resources. Mapping to spatial-frequency resources with higher Signal-to-Noise Ratios (SNRs) provides the required performance boost for the more demanding streams. In tactile internet applications, wherein haptic feedback/actuation and audio-video streams flow in parallel, the method provides significant SNR and spectral efficiency enhancements compared to conventional 3GPP New Radio (NR) transmission methods.

翻译：本文提出了一种名为多模态并发传输（MMCT）的新型物理层方法，用于高效传输具有不同可靠性-时延性能要求的多个数据流。MMCT在同一物理层传输块内对多个数据流进行编排，结合了针对特定流的调制与编码方案（MCS）选择，并将调制后的码字联合映射到多输入多输出（MIMO）空间层和频率资源上。映射至具有更高信噪比（SNR）的空间-频率资源可为要求更严苛的数据流提供所需的性能提升。在触觉互联网应用中（其中触觉反馈/执行与音视频流并行传输），与传统的3GPP新空口（NR）传输方法相比，该方法在信噪比和频谱效率方面均有显著提升。