With the exponential increase of the number of devices in the communication ecosystem toward the upcoming sixth generation (6G) of wireless networks, more enabling technologies and potential wireless architectures are necessary to fulfill the networking requirements of high throughput, massive connectivity, ultra reliability, and heterogeneous quality of service (QoS). In this work, we consider an uplink network consisting of a primary user (PU) and a secondary user (SU) and, by integrating the concept of cognitive radio and multiple access, two protocols based on rate-splitting multiple access and non-orthogonal multiple access with successive interference cancellation are investigated in terms of ergodic rate. The considered protocols aim to serve the SU in a resource block which is originally allocated solely for the PU without negatively affecting the QoS of the PU. We extract the ergodic rate of the SU considering a specific QoS for the PU for the two protocols. In the numerical results, we validate the theoretical analysis and illustrate the superiority of the considered protocols over two benchmark schemes.

翻译：随着通信生态系统中的设备数量向即将到来的无线网络第六代(6G)的第六代(6G)的无线网络的指数增长,为满足高传输量、大规模连通性、超可靠性和不同服务质量(Qos)等网络要求,需要更多的赋能技术和潜在的无线结构。 在这项工作中,我们考虑建立一个由初级用户(PU)和二级用户(SU)组成的上行链路网络,并且通过整合认知无线电和多重访问的概念,以分速多重访问和非横向多重访问为基础,通过连续取消干扰来调查两项协议。 所考虑的协议的目的是在一个资源区里为SU提供服务,最初只分配给PU,而不会对PU的QS产生消极影响。 我们从两个协议中提取了SU的ergodic率,考虑对POS进行特定的QS。 在数字结果中,我们验证了理论分析,并说明了经过考虑的议定书优于两个基准计划的优势。