A relevant solution for the high demand for new multimedia applications and services is millimeter wave (mmWave) frequency band in 5G. However, in order to face the technological challenges of the present and those that will appear in the short-term future, it is necessary to improve the spectral efficiency of 5G systems. In particular, the Radio Resource Management (RRM) module is considered an essential component. Nevertheless, resource allocation techniques that combine orthogonal multiplexing (OMA) schemes, such as Time Division Multiple Access (TDMA), with Non-Orthogonal Multiple Access (NOMA) techniques have not been studied in-depth. Therefore, this article designs and evaluates different RRM models that combine TDMA with NOMA for innovative applications in the 5G mmWave frequency bands. To this end, the advantages and challenges associated with mmWave frequency bands and potential future applications are introduced. An innovative use case has been designed to test the RRM models. The use case is based on the on-demand distribution of multimedia content in high-density environments, such as museum halls. The on-demand content aims at offering Augmented Reality (AR) services to unicast users in order to provide personalized services. The models have been evaluated in terms of throughput, capacity, and availability. According to the results, the combined RRM techniques offer up to 50% more capacity than the single multiplexing technology models and can provide video-on-demand service to practically the entire cell.

中文翻译：

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用于 5G 毫米波频段广播的基于 NOMA 的先进 RRM 方案


满足新多媒体应用和服务高需求的相关解决方案是 5G 中的毫米波 (mmWave) 频段。然而，为了应对当前和短期内将出现的技术挑战，有必要提高5G系统的频谱效率。特别是，无线电资源管理（RRM）模块被认为是一个重要组件。然而，将诸如时分多址(TDMA)之类的正交复用(OMA)方案与非正交多址(NOMA)技术相结合的资源分配技术尚未得到深入研究。因此，本文设计并评估了将 TDMA 与 NOMA 相结合的不同 RRM 模型，以实现 5G 毫米波频段的创新应用。为此，介绍了毫米波频段的优点和挑战以及未来潜在的应用。设计了一个创新用例来测试 RRM 模型。该用例基于在高密度环境（例如博物馆大厅）中按需分发多媒体内容。点播内容旨在向单播用户提供增强现实（AR）服务，以提供个性化服务。这些模型已在吞吐量、容量和可用性方面进行了评估。根据结果​​，组合的 RRM 技术比单一复用技术模型提供高达 50% 的容量，并且几乎可以为整个小区提供视频点播服务。