PUSCH Repetition Scheduling With Time Gaps for Spatial Diversity

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Solution Overview

Problem

Current wireless networks lack support for consecutively transmitting multiple sets of physical uplink shared channel (PUSCH) repetitions with different sets of transmission parameters, leading to impaired performance due to lack of spatial diversity and increased resource consumption.

Innovation Solution

Implementing time gaps between scheduled repetitions of PUSCH transmissions using different sets of transmission parameters, allowing for interleaving of repetitions and improving spatial and time diversity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple sets of PUSCH repetitions with different transmission parameters are transmitted consecutively without time gaps, then transmission continuity is maintained, but spatial diversity is reduced and performance is impaired

Engineering Contradiction:

Improvetransmission reliabilityVSAvoidspatial diversity

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent applies periodic action by introducing regular time gaps between consecutive PUSCH repetition transmissions. These periodic interruptions allow the system to switch transmission parameters (such as spatial filters or beams) between repetitions, thereby achieving spatial diversity while maintaining overall transmission continuity. The time gaps create a rhythmic pattern of transmit-gap-transmit that enables parameter adaptation.

Inventive Principle:

Principle #19Periodic action

2Reliability

If time gaps are inserted between scheduled PUSCH repetitions, then spatial and time diversity are improved, but transmission continuity is reduced

Engineering Contradiction:

Improvetransmission reliabilityVSAvoidtransmission time continuity

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent applies partial action by inserting time gaps only between repetitions with different transmission parameters, rather than between all consecutive repetitions. This selective approach maintains spatial diversity where needed while preserving transmission continuity where the same parameters are used, thereby reducing overall time loss while still achieving the diversity benefits.

Inventive Principle:

Principle #16Partial or excessive action

3Productivity

If multiple sets of PUSCH repetitions are transmitted without parameter switching, then transmission simplicity is maintained, but resource consumption increases due to lack of diversity

Engineering Contradiction:

Improveresource efficiencyVSAvoidtransmission parameter management

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent applies parameter changes by dynamically adjusting transmission parameters (such as spatial filters, beams, or precoding vectors) between PUSCH repetitions. By changing these parameters based on channel conditions or scheduling requirements, the system achieves better spatial diversity and resource efficiency. The time gaps provide the necessary transition time for parameter switching without disrupting overall transmission flow.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS12477532B2Time gaps between physical uplink shared channel repetitions

Publication Date: 2025.11.18 QUALCOMM INC

AI summary

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive at least one downlink control information message that schedules multiple sets of repetitions of a physical uplink shared channel transmission with different sets of transmission parameters. The scheduled repetitions of the multiple sets of repetitions may be transmitted consecutively. The UE may transmit one or more of the scheduled repetitions of the multiple sets of repetitions using one or more time gaps between the scheduled repetitions of the multiple sets of repetitions. Numerous other aspects are provided.