Semi-Persistent Resource Group Switching With Mutex Activation

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Solution Overview

Problem

In mobile communication systems, the coexistence of multiple semi-persistent resource groups that are inadvertently activated due to failed deactivate signaling leads to overlapping time-frequency resources, causing retransmissions and reducing transmission efficiency.

Innovation Solution

Implement a mutex group mechanism where at most one semi-persistent resource group is activated at a time by ensuring that the terminal deactivates an existing group before activating a new one, or activates directly if no existing group is active, using signaling to manage and configure these groups effectively.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If deactivate signaling is used to switch between semi-persistent resource groups, then resource group switching is enabled, but signaling overhead increases and retransmissions occur when deactivation fails

Engineering Contradiction:

Improveresource group switching capabilityVSAvoidsignaling overhead

Core Design Contradiction:

Adaptability or versatilityVSLoss of information

Solution Approach 1:

The patent extracts the deactivation function from a separate signaling message and integrates it into the activation message. When the network device wants to switch from one semi-persistent resource group to another, it sends a single activation message that simultaneously activates the new resource group and deactivates the old one, eliminating the need for separate deactivate signaling and reducing signaling overhead.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent merges the activation and deactivation operations into a single signaling message. The activation message contains both the activation instruction for the new semi-persistent resource group and the implicit deactivation instruction for the old group, combining two separate control operations into one unified message to reduce signaling overhead and prevent retransmission issues.

Inventive Principle:

Principle #5Merging (Combining)

2Productivity

If multiple semi-persistent resource groups are configured for terminal, then transmission efficiency is improved through resource flexibility, but resource overlap and retransmissions occur when multiple groups are simultaneously activated

Engineering Contradiction:

Improvetransmission efficiencyVSAvoidresource activation accuracy

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent applies preliminary anti-action by including an implicit deactivation instruction for existing semi-persistent resource groups within the activation message for new groups. This prevents the harmful effect of simultaneous activation of multiple resource groups with overlapping time-frequency resources by proactively deactivating old groups before or during the activation of new ones, ensuring resource activation accuracy and preventing retransmissions.

Inventive Principle:

Principle #9Preliminary anti-action

Data Source

PatentUS20260019224A1Method and device for activating a resource and storage medium

Publication Date: 2026.01.15 BEIJING XIAOMI MOBILE SOFTWARE CO LTD

AI summary

A method for activating a resource, including: a terminal receiving an activate signaling sent by a network device, the activate signaling is configured to indicate to activate a first semi-persistent resource group; deactivating a second semi-persistent resource group; and activating the first semi-persistent resource group, where a mutual exclusion group includes the first semi-persistent resource group and an activated second semi-persistent resource group, and at most one semi-persistent resource group is activated in the mutual exclusion group at a same moment.