标题： 蜂窝系统在非授权频谱中的吞吐量最优的先听后说机制 显示英文标题

标题： Throughput Optimal Listen-Before-Talk for Cellular in Unlicensed Spectrum

摘要： 将蜂窝技术扩展到非授权频谱的努力正在迅速获得动力。 在欧洲联盟和日本等地区，强制实施了先听后说（LBT）机制，以协调蜂窝系统和现有系统在非授权频谱中的共存。 本文研究了基于负载的设备（LBE）的吞吐量最优LBT传输策略。 我们发现，最优规则是一种纯阈值策略：一旦信道质量超过优化阈值，LBE应停止监听并开始传输。 我们还揭示了符合监管要求的最优LBT参数集。 我们的结果阐明了监管LBT要求如何影响非授权频谱中无线设备的传输策略。 显示英文摘要

摘要： The effort to extend cellular technologies to unlicensed spectrum has been gaining high momentum. Listen-before-talk (LBT) is enforced in the regions such as European Union and Japan to harmonize coexistence of cellular and incumbent systems in unlicensed spectrum. In this paper, we study throughput optimal LBT transmission strategy for load based equipment (LBE). We find that the optimal rule is a pure threshold policy: The LBE should stop listening and transmit once the channel quality exceeds an optimized threshold. We also reveal the optimal set of LBT parameters that are compliant with regulatory requirements. Our results shed light on how the regulatory LBT requirements can affect the transmission strategies of radio equipment in unlicensed spectrum.