Uplink Grant Cancellation Timing for Reliable Resource Allocation

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Solution Overview

Problem

Existing wireless communications networks face challenges in efficiently managing uplink communication resources to accommodate diverse data traffic profiles with varying latency, reliability, and priority requirements, leading to resource collisions and inefficiencies.

Innovation Solution

A method for a communications device to receive an uplink grant indication and a subsequent uplink cancellation indication, determining whether to transmit data based on the timing of these indications, allowing the device to ignore the cancellation indication if the grant is received within a defined time window associated with the cancellation indication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If uplink cancellation indications are used to manage resource allocations dynamically, then resource allocation efficiency is improved, but false positives in resource allocation decisions increase

Engineering Contradiction:

Improveresource allocation efficiencyVSAvoidresource allocation decision accuracy

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent applies preliminary action by establishing a time window before the uplink transmission time when cancellation indications must be received to be valid. This preliminary temporal constraint prevents false positives by ensuring that only timely cancellation indications (received within the defined window) can override granted resources, while filtering out late-arriving indications that may be outdated or erroneous.

Inventive Principle:

Principle #10Preliminary action

2Productivity

If multiple devices share uplink communication resources dynamically, then resource utilization is improved, but resource collisions increase

Engineering Contradiction:

Improveresource utilizationVSAvoidresource collisions

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent implements feedback mechanisms where infrastructure equipment monitors resource usage and sends cancellation indications to devices when resource conflicts are detected. The time window constraint ensures that feedback is timely and actionable, allowing devices to adjust their transmissions to avoid collisions while maintaining high resource utilization through dynamic reallocation.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS12588030B2Communications device, infrastructure equipment, and methods for determining whether to transmit first data using first uplink communication resources

Publication Date: 2026.03.24 SONY GROUP CORP

AI summary

A method of operating a communications device in a wireless communications network. The method includes receiving at a first time an uplink grant indication, the uplink grant indication indicating first uplink communication resources allocated for the transmission of first data by the communications device, receiving at a second time an uplink cancellation indication (UL-CI), the UL-CI indicating second uplink communication resources, the second uplink communication resources including at least a portion of the first uplink communication resources, and in response to receiving the uplink grant information and the uplink cancellation indication, determining based on the first time and the second time whether to transmit the first data using the first uplink communication resources.