Abstract
Cooperative user relaying (CUR) is emerged as an effective framework for 6G networks to address and improve the coverage, system capacity, and transference reliability, without the limitation of antennas at the transceivers. Based on the principle of CUR, CUR allows some users to receive information from the transmitter and forward them to other users. Rate Splitting Multiple Access (RSMA) currently has been noticed as a promising scheme for the management strategies of interference, the design of multiple access (MA) systems, and optimization of non-orthogonal transmission (non-OT) for 6G networks. Recently, one of the most outstanding schemes and interference strategies for CUR is RSMA. This paper presents a comprehensive tutorial on Cooperative User Relaying with RSMA of wireless network 6G. After analyzing the overview of CUR with RSMA and the cooperative rate-slipping (CRS) scheme, the core challenges of CUR with RSMA will be exploited. Finally, the future directions of CUR with RSMA are defined, aiming to conduct the optimization system of CUR with RSMA into 6G networks.
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