Semi-Persistent Scheduling Re-Deactivation via Indication Mechanisms

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Solution Overview

Problem

In communication technology, terminals face challenges in accurately determining which semi-persistent scheduling (SPS) to deactivate based on network device instructions, leading to potential communication disruptions due to incorrect deactivation of SPS types.

Innovation Solution

A method and apparatus for determining and re-deactivating SPS, where the network device provides an indication to the terminal to accurately identify the type of SPS to be re-deactivated, using explicit or implicit indications such as RNTI scrambling, DCI formats, and frequency domain resources, ensuring correct deactivation and minimizing communication disruptions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If the network device sends a deactivation instruction for SPS, then the terminal can deactivate the SPS to save resources, but the terminal cannot accurately determine which SPS type to deactivate, leading to communication disruptions

Engineering Contradiction:

Improveresource consumptionVSAvoidcommunication reliability

Core Design Contradiction:

Loss of energyVSReliability

Solution Approach 1:

The patent introduces an intermediary indication mechanism (such as specific DCI formats, RNTI types, or indication fields) that mediates between the network device's deactivation instruction and the terminal's SPS identification. This intermediary carries explicit or implicit information about the SPS type, enabling the terminal to accurately determine which SPS to deactivate without directly exposing the complex SPS configuration details, thus resolving the contradiction between resource saving and communication reliability.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Measurement precision

If the network device provides detailed indication information for SPS type identification, then the terminal can accurately determine the SPS to deactivate, but the signaling overhead increases

Engineering Contradiction:

ImproveSPS type identification accuracyVSAvoidsignaling overhead

Core Design Contradiction:

Measurement precisionVSLoss of information

Solution Approach 1:

The patent applies partial action by providing only the necessary portion of SPS identification information through indication mechanisms (such as DCI format type, RNTI scrambling, or specific indication fields) rather than transmitting complete SPS configuration details. This partial information is sufficient for the terminal to identify the SPS type and proceed with deactivation, achieving accurate identification while minimizing signaling overhead.

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

The patent utilizes parameter changes in the indication mechanism to encode SPS type information efficiently. By varying parameters such as DCI format selection, RNTI type, or indication field values, the network device can convey multiple bits of SPS identification information through compact signaling, reducing the overhead while maintaining high identification accuracy at the terminal side.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS20250016796A1Method and apparatus for re-deactivation and determination of semi-persistent scheduling

Publication Date: 2025.01.09 BEIJING XIAOMI MOBILE SOFTWARE CO LTD

AI summary

A method for determining re-deactivation of a semi-persistent scheduling (SPS), performed by a terminal, includes: determining a type of the semi-persistent scheduling (SPS) to be re-deactivated according to an instruction from a network device. The type includes at least one of: a group common semi-persistent scheduling (group common SPS); or a user equipment-specific semi-persistent scheduling (UE-specific SPS).