Configured Grant State Reporting With Per-PDCCH MAC CE Bits

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Solution Overview

Problem

Inconsistent understanding of configured grant (CG) states between terminal devices and network devices in radio access networks leads to transmission or reception errors due to multiple physical downlink control channels (PDCCHs) indicating the same CG activation/deactivation, which is not accurately reflected in the current multiple entry configured grant confirmation media access control-control element (MAC CE).

Innovation Solution

Implementing a method where the terminal device reports a MAC CE with indication bits corresponding to each CG state, ensuring consistent understanding by indicating whether each PDCCH is received, thereby aligning the CG states between the terminal and network devices.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple PDCCHs are used to indicate activation or deactivation of different CGs, then the capability to manage multiple configured grants is improved, but inconsistency in CG state understanding between terminal and network devices occurs

Engineering Contradiction:

Improvecapability to manage multiple configured grantsVSAvoidconsistency of CG state understanding

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The terminal device sends a MAC CE feedback message to the network device, indicating whether it has received each PDCCH. This feedback mechanism allows the network device to verify if the terminal has correctly received the activation or deactivation commands for each CG, thereby resolving the inconsistency in CG state understanding between the terminal and network devices.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The MAC CE serves as an intermediary message that carries information about PDCCH reception status. By introducing this intermediate feedback layer, the system enables the terminal and network device to align their understanding of CG states without requiring direct observation of each other's internal state.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Measurement precision

If a MAC CE is used to report PDCCH reception status, then the accuracy of state synchronization is improved, but the complexity of the reporting mechanism increases

Engineering Contradiction:

Improveaccuracy of state synchronizationVSAvoidcomplexity of reporting mechanism

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The MAC CE is segmented into multiple indication bits, with each bit corresponding to a specific PDCCH. This segmentation allows for precise reporting of each individual PDCCH reception status while maintaining a structured and manageable format. The segmented approach enables accurate state synchronization without requiring a completely complex reporting mechanism.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS20250338286A1Method for information reporting, terminal device, and network device

Publication Date: 2025.10.30 GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD

AI summary

A method for information reporting, a terminal device, and a network device are provided. The method includes the following. At least one first physical downlink control channel (PDCCH) transmitted by a network device is received, where the at least one first PDCCH indicates activation or deactivation of a configured grant (CG) configured by the network device for the terminal device, and different first PDCCHs indicate activation or deactivation of different CGs. A media access control-control element (MAC CE) is reported to the network device, where the MAC CE indicates that the first PDCCH is received.