  Configured Grant-based allocation has been adopted in New Radio 3rd
Generation Partnership Project Release 16. This scheme is beneficial in
supporting Ultra-Reliable and Low Latency Communication for industrial
communication, a key Fifth Generation mobile communication usage scenario. This
scheduling mechanism enables a user with a periodic traffic to transmit its
data readily and bypasses the signaling entailed to scheduling requests and
scheduling grants; and provides low latency access. To facilitate
ultra-reliable communication, the scheduling mechanism can allow the user to
transmit redundant transmissions at consecutive repetition occasions in a
pre-defined period. However, for the user with semi-deterministic traffic, the
reliability and latency performance with Configured Grant-based allocation
deteriorates. This can be due to, e.g., late data arrival in the buffer, and
the user unable to transmit its repetitions, which leads to reliability
degradation. To improve the Configured Grant reliability performance with
semi-deterministic traffic, we consider various allocation designs utilizing,
e.g., additional unlicensed spectrum, or flexible transmission in a Configured
Grant period, or allowing time-gaps between the repetitions, etc. These
enhancements could be a stepping-stone for Sixth Generation Configured Grant
models.

Networking and Internet Architecture