Enery efficient joint delivery of unicast and multicase services through rate-splitting multiple-access approaches for the sixth-generation wireless

背景BBC的愿景是，在未来，所有媒体内容都将通过IP网络提供，提供线性、点播和其他个性化服务，其中出门和移动时都可以通过移动宽带网络访问这些服务。之前的几代移动宽带技术(例如4G和5G)主要设计为最大化数据吞吐量和最小化系统延迟作为关键标准。然而，很少或根本没有考虑网络的整体能效或可持续性。该项目将考虑基于速率分割多址(RSMA)的通用和强大的传输框架的理论和应用。RSMA是一种新的物理层传输策略，它通过解码部分干扰并将剩余部分视为噪声来桥接和推广现有的许多策略。最近的研究表明，RSMA在广泛的网络负载和用户部署中提供了频谱效率、能量效率和服务质量增强的空间，对不完美的信道知识具有健壮性，以及反馈开销和复杂性的降低。在论文[1]中，RSMA已被应用于联合多播和单播设置，并被证明比所有现有的基线提供了显著的频谱和能量效率优势。[1]Y.Ma.，B.Clerckx和V.O.K.Li，《用于多天线非正交单播和多播传输的速率分割：频谱和能量效率分析》，IEEE汇刊。本项目的总体目标是研究创新的物理层信号处理方法，以提高未来移动宽带网络的能量效率和可持续性，以提供IP多播和单播(实时和按需)服务。该项目将侧重于在移动环境中提供多播和单播信号的多用户多天线系统。目标包括：-了解在5G移动宽带网络中传输多播和单播信号的最先进的物理层方法和系统模型。-建立现有系统建模的局限性，以纳入系统不同阶段的代表性能耗。-调查和建立考虑系统不同阶段能耗的RSMA系统模型。频谱和能源效率将在不完善的信道知识的一般框架下考虑。-单播和多播服务中RSMA收发信机架构的设计。-展示开发的RSMA收发信机架构在6G部署中交付多播和单播信号的适用性和性能评估。-向广泛的受众传播这项工作，例如BBC、学术界、标准机构、工作描述和方法-回顾在5G移动宽带网络中传递多播和单播信号的最新物理层方法和系统模型。-识别发射器和接收器的现有建模的局限性，以纳入代表性的能量消耗。-开发RSMA的系统模型，以考虑发射器和接收器的能量消耗。频谱和能量效率将在不完善的信道知识的总体框架下进行考虑。-单播和多播服务中RSMA收发信机架构的设计。-通过系统模拟评估为在6G部署中传输多播和单播信号而开发的RSMA收发信机架构的性能。研究领域：射频和微波通信

BackgroundThe BBC's vision is that, in the future, all media content will be delivered via IP networks, providing linear, on-demand, and other personalised services and where access to these services out of the home and on the move would be provided via mobile broadband networks.Previous mobile broadband technology generations (e.g. 4G and 5G) have been mainly designed to maximise the data throughput and minimise latency of the system as key criteria. However, little or no consideration has been given to the overall energy efficiency or sustainability of the networks.The project will consider the theory and applications of general and powerful transmission frameworks based on Rate-Splitting Multiple Access (RSMA). RSMA is a novel physical layer transmission strategy that bridges and generalizes many existing strategies by decoding part of the interference and treating the remaining part of the interference as noise. Recent research shows that RSMA provides room for spectral efficiency, energy efficiency and quality of service enhancements in a wide range of network loads and user deployments, robustness against imperfect channel knowledge, as well as feedback overhead and complexity reduction. In the paper [1], RSMA has been applied to a joint multicast and unicast setting and has been shown to provide significant spectral and energy efficiency benefits over all existing baselines. [1] Y. Mao, B. Clerckx and V.O.K. Li, "Rate-Splitting for Multi-Antenna Non-Orthogonal Unicast and Multicast Transmission: Spectral and Energy Efficiency Analysis," IEEE Trans. on Commun., vol 67, no 12, pp. 8754-8770, Dec 2019.ObjectiveThe overall goal of the project is to investigate innovative physical layer signal processing approaches that improve the energy efficiency and sustainability of future mobile broadband networks for the delivery of IP multicast and unicast (live & on-demand) services. The project will focus on multiuser multi-antenna systems delivering multicast and unicast signals in mobile environments. The aims include:-To understand the state-of-the-art physical layer approaches and system models for the delivery of multicast and unicast signals in 5G mobile broadband networks.-Establish limitations of existing system modelling to incorporate representative energy consumption at the different stages of the system.-Investigate and build system models of RSMA considering energy consumption at the different stages of the system. Spectral and energy efficiencies will be considered under the general framework of imperfect channel knowledge.-Design of transceiver architectures for RSMA in unicast and multicast services.-Demonstrate the applicability and performance evaluation of the developed RSMA transceiver architectures for the delivery of multicast and unicast signals in 6G deployments.-Disseminate the work to a wide audience, e.g., the BBC, academia, standard bodies, and the greater public.Work Description and Methodology-Review of the state-of-the-art physical layer approaches and system models for the delivery of multicast and unicast signals in 5G mobile broadband networks.-Identification of limitations of existing modelling at transmitters and receivers to incorporate representative energy consumption.-Development of system models of RSMA for considering energy consumption at the transmitter and receivers. Spectral and energy efficiencies will be considered under the general framework of imperfect channel knowledge.-Design of transceiver architectures for RSMA in unicast and multicast services.-Performance evaluation of the developed RSMA transceiver architectures for delivering multicast and unicast signals in 6G deployments with system simulations.Research area: RF and microwave communications