5G中Multi-TRP based URLLC传输方案设计

The design of Multi-TRP based URLLC transmission scheme in 5G

超高可靠低时延通信(URLLC)作为5G的三大应用场景之一,受到了越来越广泛的关注。车联网是URLLC的主要应用之一,对信息传输的可靠性有很高的需求。为了增强传输的鲁棒性和可靠性,从空分、频分和时分的角度分别介绍了多种Multi-TRPbasedURLLC技术方案,对比分析了其优缺点。此外,设计了一种新的动态切换传输方式的信令指示方案,并对多种方案进行了性能仿真评估。仿真结果表明,动态切换的方式能提供显著的性能增益。

Ultra-reliable and low latency communication(URLLC) is one of the three big scenarios in 5G, and is paid more and more attention now. Internet of vehicle is one of the application about URLLC, and it has high requirement about reliability of information transmission. In order to improve the reliability and robustness of transmission, several transmission schemes of Multi-TRP based URLLC is introduced from the perspective of SDM, FDM and TDM, and the merit and demerit of these schemes are compared with each other. In addition, a new method of indicating dynamic switching between these schemes is proposed, and the performance is evaluated. Based on the simulation results, significant performance gain can be obtained by the scheme of dynamic switching.