PUSCH Splitting for Time-Domain CSI Uplink Scheduling

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Solution Overview

Problem

Existing wireless communication systems face challenges in efficiently reporting time domain channel state information (TD CSI) using physical uplink shared channels, leading to suboptimal resource allocation and communication efficiency.

Innovation Solution

Implementing a PUSCH split operation where additional uplink information is transmitted during a first PUSCH occasion and TD CSI is transmitted during a second PUSCH occasion, allowing for separate handling of different types of uplink content.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If TD CSI and additional uplink information are transmitted together in a single PUSCH occasion, then resource allocation is simplified, but communication efficiency and resource optimization deteriorate

Engineering Contradiction:

Improveresource allocation complexityVSAvoidcommunication efficiency

Core Design Contradiction:

Device complexityVSProductivity

Solution Approach 1:

The patent divides the transmission of uplink information into two separate PUSCH occasions: the first PUSCH occasion transmits additional uplink information, while the second PUSCH occasion transmits TD CSI. This segmentation allows each transmission to be optimized independently, improving overall communication efficiency while maintaining manageable resource allocation through structured scheduling.

Inventive Principle:

Principle #1Segmentation

2Loss of time

If TD CSI is transmitted in the first PUSCH occasion along with additional uplink information, then transmission timing is simplified, but resource allocation optimization and communication efficiency worsen

Engineering Contradiction:

Improvetransmission timing complexityVSAvoidresource allocation optimization

Core Design Contradiction:

Loss of timeVSProductivity

Solution Approach 1:

The patent segments the transmission timeline into two distinct PUSCH occasions with specific functions: the first occasion is dedicated to additional uplink information, and the second occasion is dedicated to TD CSI. This temporal segmentation optimizes resource allocation by preventing resource conflicts and enabling targeted transmission strategies for each information type.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent schedules the transmission of additional uplink information in the first PUSCH occasion before transmitting TD CSI in the second occasion. This preliminary action ensures that scheduling decisions and resource allocations are made in a structured sequence, allowing the network to optimize resource distribution based on priority and timing requirements.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20260075605A1Physical uplink shared channel splitting for reporting time domain channel state information

Publication Date: 2026.03.12 QUALCOMM INC

AI summary

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, during a physical downlink control channel (PDCCH) occasion, scheduling information indicative of a scheduled physical uplink shared channel (PUSCH) communication corresponding to a first PUSCH occasion, wherein the scheduling information indicates a set of uplink contents associated with the scheduled PUSCH communication, the set of uplink contents comprising time domain channel state information (TD CSI) and additional uplink information. The UE may perform a PUSCH split operation, in which the first PUSCH occasion and a second PUSCH occasion correspond to the scheduled PUSCH communication, wherein performing the PUSCH split operation comprises transmitting the additional uplink information during the first PUSCH occasion, and transmitting the TD CSI during the second PUSCH occasion. Numerous other aspects are described.