PUSCH Skipping Indication Timing for Flexible Uplink Scheduling
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Solution Overview
Problem
In wireless communications systems, UEs may skip physical uplink shared channel (PUSCH) occasions, but network entities struggle to reallocate resources efficiently due to insufficient timing of skipping indications, leading to reduced scheduling flexibility and resource waste.
Innovation Solution
UEs indicate a timeline prior to PUSCH occasions when they can provide skipping indications, allowing network entities to schedule and reallocate resources more effectively, improving resource utilization and reducing latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If UEs skip PUSCH occasions without timely indication, then resource allocation flexibility is improved, but resource utilization deteriorates due to waste of scheduled resources
Solution Approach 1:
The UE performs preliminary action by transmitting the skipping indication before the PUSCH occasion occurs. The indication is transmitted at a determined time prior to the PUSCH occasion, allowing the network entity to reallocate resources in advance rather than after the fact, thus preventing resource waste while maintaining scheduling flexibility
Solution Approach 2:
The UE provides feedback to the network entity about its transmission status by transmitting the skipping indication. This feedback mechanism allows the network entity to understand whether the UE will use the scheduled PUSCH occasion or skip it, enabling efficient resource reallocation and preventing resource waste
2Adaptability or versatility
If UEs provide skipping indications at the last moment, then scheduling flexibility is improved, but system latency deteriorates due to delayed resource reallocation
Solution Approach 1:
The UE transmits the skipping indication at a determined time prior to the PUSCH occasion, performing the indication action in advance rather than at the last moment. This preliminary transmission gives the network entity sufficient time to process the skipping information and reallocate resources efficiently, reducing system latency while preserving scheduling flexibility
3Loss of energy
If network entities reallocate resources without timely skipping indications, then resource efficiency is improved, but scheduling flexibility deteriorates due to constrained reallocation options
Solution Approach 1:
The skipping indication is transmitted at a determined time prior to the PUSCH occasion, providing the network entity with advance notice. This timing allows the network entity to maintain scheduling flexibility by considering multiple reallocation options while simultaneously improving resource efficiency through timely awareness of skipping events
Solution Approach 2:
The UE provides feedback about its skipping decision in advance, enabling the network entity to optimize resource allocation based on this information. The feedback mechanism ensures that resource reallocation can be performed efficiently while maintaining flexibility in the scheduling decisions
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit a capability information message indicating a timeline prior to a physical uplink shared channel (PUSCH) occasion that the UE may be capable of transmitting a PUSCH skipping indication. The PUSCH skipping indication may indicate that the UE may skip uplink transmission in at least one PUSCH occasion. In some cases, the UE may receive signaling indicating that the UE is scheduled with one or more PUSCH occasions. The UE may transmit, at least at the indicated timeline to a first PUSCH occasion, a control message including the PUSCH skipping indication.