As one of the key communication scenarios in the fifth generation (5G) and also the sixth generation (6G) of mobile communication networks, ultrareliable and low-latency communications (URLLC) will be central for the development of various emerging applications such as industry automation, tactile internet, augmented/virtual reality, and more. In order to support such mission-critical applications, according to the 5G standard requirements, the End-to-End (E2E) delay and the packet loss probability in current mobile networks need to be improved by at least two orders of magnitude. This capability gap cannot be fully resolved by the 5G New Radio, i.e., the physical-layer technology for 5G, even though the transmission delay in radio access networks achieves the 1-ms target. Transmission delay contributes only a small fraction of the E2E delay, as the stochastic delays in upper networking layers, such as queuing delay, processing delay, and access delay, are key bottlenecks for achieving URLLC.

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扫描问题

作为第五代（5G）和第六代（6G）移动通信网络中的关键通信方案之一，超可靠和低延迟通信（URLLC）对于各种新兴应用（例如工业自动化）的开发将至关重要。 ，触觉式互联网，增强/虚拟现实等等。为了支持此类关键任务应用，根据5G标准要求，当前移动网络中的端到端（E2E）延迟和丢包概率需要提高至少两个数量级。即使无线接入网络中的传输延迟达到了1毫秒的目标，这种能力差距也无法通过5G新无线电（即5G的物理层技术）完全解决。传输延迟仅占端到端延迟的一小部分，