Rate-Splitting Multiple Access (RSMA) has emerged as a powerful multiple access, interference management, and multi-user strategy for next generation communication systems. In this tutorial, we depart from the orthogonal multiple access (OMA) versus non-orthogonal multiple access (NOMA) discussion held in 5G, and the conventional multi-user linear precoding approach used in space-division multiple access (SDMA), multi-user and massive MIMO in 4G and 5G, and show how multi-user communications and multiple access design for 6G and beyond should be intimately related to the fundamental problem of interference management. We start from foundational principles of interference management and rate-splitting, and progressively delineate RSMA frameworks for downlink, uplink, and multi-cell networks. We show that, in contrast to past generations of multiple access techniques (OMA, NOMA, SDMA), RSMA offers numerous benefits. We then discuss how those benefits translate into numerous opportunities for RSMA in over forty different applications and scenarios of 6G. We finally address common myths and answer frequently asked questions, opening the discussions to interesting future research avenues. Supported by the numerous benefits and applications, the tutorial concludes on the underpinning role played by RSMA in next generation networks, which should inspire future research, development, and standardization of RSMA-aided communication for 6G.
翻译:超速多存(RSMA)已成为下一代通信系统的强大多重存取、干扰管理和多用户战略(RSMA ) 。 在本次辅导中,我们脱离了在5G中进行的正方形多存取(OMA)与非正方形多存取(NOMA)的讨论,并脱离了在空间司多存取(SDMA)、多用户和大型MIMO(4G和5G)中使用的常规多用户线性预编码方法(SDMA)、多用户和大型MIMO(4G和5G)中采用的常规多用户多码存取(RSIMO),并展示了6G及以后的多码多码存取(6G)如何与干扰管理的根本问题密切相关。 我们从干扰管理和分率分解的基本原则开始,逐步界定RSMA下行、上行和多细胞网络的下行连接(NOMA)框架。我们展示了与过去几代多代多码多码存取(OMA、NOMA、SDMA(SMA)多重存取的多样技术相比,这些好处如何转化为6G的应用程序和设想。 我们最后回答了共同的谜和回答了常见的问题并回答了问问题,开启了未来应用、未来研究、开启了RMA(RSMA)的研究成果,这些好处和启发的后期研究网络的下一代网络的后期)的后期研究。