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Recursive Periodicity Shifting for Semi-Persistent Scheduling of Time-Sensitive Communication in 5G
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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