5G中时间敏感通信半持久调度的递归周期移位算法
Recursive Periodicity Shifting for Semi-Persistent Scheduling of Time-Sensitive Communication in 5G
摘要：
各种传统和新兴的工业控制应用为5G/6 G网络创造了周期性和时间敏感的通信（TSC）需求。由于分配和到达分组之间的周期性不对准导致显著的等待延迟，最先进的半持久调度（SPS）技术不能满足这种类型的关键业务的要求。为了解决这一挑战，我们开发了一种新的递归周期性移位（RPS）-SPS计划，提供了一个最佳的调度策略，通过递归对齐的时间分配，直到时间不匹配被最小化。RPS可以在对调度框架进行最小修改的情况下在5G无线网络中实现。性能评估表明，所提出的方案的有效性，在任意流量周期的失调延迟最小化。
英文摘要：
Various legacy and emerging industrial control applications create the requirement of periodic and time-sensitive communication (TSC) for 5G/6G networks. State-of-the-art semi-persistent scheduling (SPS) techniques fall short of meeting the requirements of this type of critical traffic due to periodicity misalignment between assignments and arriving packets that lead to significant waiting delays. To tackle this challenge, we develop a novel recursive periodicity shifting (RPS)-SPS scheme that provides an optimal scheduling policy by recursively aligning the period of assignments until the timing mismatch is minimized. RPS can be realized in 5G wireless networks with minimal modifications to the scheduling framework. Performance evaluation shows the effectiveness of the proposed scheme in terms of minimizing misalignment delay with arbitrary traffic periodicity.
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