Layered Division Multiplexing Enabled Broadcast Broadband Convergence in 5G: Theory, Simulations, and Scenarios

IF 3.2 1区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Broadcasting Pub Date : 2024-08-28 DOI:10.1109/TBC.2024.3437204

Yu Xue;Wei Li;Yuxiao Zhai;Liang Zhang;Zhihong Hong;Elvino Sousa;Yiyan Wu

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引用次数: 0

Abstract

The vision of the future 5G - Multicast Broadcast Services (5G-MBS) is to achieve full convergence of broadcast and broadband services by providing these services on the same infrastructure and dynamically switching between them without impacting user experiences. By incorporating Layered Division Multiplexing (LDM) into the new 5G-MBS system and performing proper antenna precoding, the network can transmit a 2-layered signal where the higher-power Core Layer (CL) transmits a Single Frequency Network (SFN) broadcast signal, and the lower-power Enhanced Layer (EL) is used for broadband services. To evaluate the performance of the 2-layered network, a 5G system-level simulator is created and configured according to the 3GPP self-evaluation scenarios to compare against the 3GPP calibration results. The resulting Signal to Interference & Noise Ratio (SINR) Cumulative Distribution Function (CDF) curves fall within the tolerance margin of 1~2 dB from the 3GPP calibration average. Full simulations of the 2-layered network show for an urban scenario with Inter-Site Distance (ISD) of less than 1 km, the network can provide up to three 4K video broadcast services in the CL while supporting a near full broadband network in the EL. For further ISDs up to 3 km, the network can sustain video broadcast service at 1080p while supporting a partial broadband network. For a rural scenario, at the reference ISD of 1732 m, the CL can support three 4k video broadcast services while the EL performance matches a standalone broadband network. Finally, for further ISD of up to 5 km, the CL can support one 1080p and one 720p video broadcast service, and for ISD up to 10 km, the network can provide one broadcast service at 720p in the CL, all while providing a full broadband network in the EL.

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分层时分复用支持 5G 广播宽带融合：理论、模拟和方案

未来 5G - 多播广播服务（5G-MBS）的愿景是实现广播和宽带服务的全面融合，在相同的基础设施上提供这些服务，并在不影响用户体验的情况下在两者之间动态切换。通过在新的 5G-MBS 系统中采用分层多路复用（LDM）技术并执行适当的天线预编码，网络可以传输双层信号，其中功率较高的核心层（CL）传输单频网（SFN）广播信号，功率较低的增强层（EL）用于宽带服务。为评估双层网络的性能，创建了一个 5G 系统级模拟器，并根据 3GPP 自我评估方案进行配置，以便与 3GPP 校准结果进行比较。所得到的信号干扰与噪声比（SINR）累积分布函数（CDF）曲线与 3GPP 校准平均值的误差范围在 1~2 dB 之间。对 2 层网络的全面模拟显示，在站点间距离（ISD）小于 1 公里的城市场景中，该网络可在 CL 中提供多达三种 4K 视频广播服务，同时在 EL 中支持接近完整的宽带网络。对于更远的 3 千米 ISD，网络可维持 1080p 的视频广播服务，同时支持部分宽带网络。在农村场景中，参考 ISD 为 1732 米，CL 可支持三个 4k 视频广播服务，而 EL 的性能与独立宽带网络相当。最后，在 5 千米以内的 ISD，CL 可支持一个 1080p 和一个 720p 视频广播服务；在 10 千米以内的 ISD，网络可在 CL 中提供一个 720p 的广播服务，同时在 EL 中提供一个完整的宽带网络。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Transactions on Broadcasting 工程技术-电信学

CiteScore

9.40

自引率

31.10%

发文量

审稿时长

6-12 weeks

期刊介绍： The Society’s Field of Interest is “Devices, equipment, techniques and systems related to broadcast technology, including the production, distribution, transmission, and propagation aspects.” In addition to this formal FOI statement, which is used to provide guidance to the Publications Committee in the selection of content, the AdCom has further resolved that “broadcast systems includes all aspects of transmission, propagation, and reception.”