Random-Access Acknowledgment Repetition by Configured Thresholds

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Solution Overview

Problem

The existing communication methods in contention-based random access procedures lack an effective mechanism to protect the transmission of acknowledgment information (Msg5) in mobile communication systems, leading to inefficiencies in resource usage and signaling overheads.

Innovation Solution

Implementing different repeat transmission quantities for acknowledgment information (Msg5) based on specific thresholds to optimize transmission resources and flexibility, using various modes such as preconfigured preamble sequences, scrambling codes, and signaling indications.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If repeat transmission of Msg5 is always performed to protect acknowledgment information, then transmission reliability is improved, but transmission resource consumption increases

Engineering Contradiction:

Improvetransmission reliabilityVSAvoidtransmission resource consumption

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The patent applies parameter changes by dynamically adjusting the repeat transmission quantity of Msg5 based on channel conditions and message importance. The network device configures different repeat quantities (e.g., 1, 2, or 4 repetitions) according to the measured channel quality and the specific message being transmitted, thereby optimizing the balance between reliability and resource consumption rather than using fixed repetition schemes.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent implements dynamics by making the Msg5 repeat transmission quantity adaptable and configurable rather than static. The network device can dynamically adjust the repeat quantity based on real-time channel conditions, message priority, and system load, allowing the system to respond flexibly to changing conditions and optimize performance accordingly.

Inventive Principle:

Principle #15Dynamics

2Device complexity

If a unified threshold is used for both Msg3 and Msg5 transmission quantity determination, then device complexity is reduced, but transmission optimization precision deteriorates

Engineering Contradiction:

Improvethreshold configuration complexityVSAvoidtransmission optimization precision

Core Design Contradiction:

Device complexityVSManufacturing precision

Solution Approach 1:

The patent applies segmentation by separating the threshold configuration for Msg3 and Msg5 into distinct parameters. The network device configures different thresholds (first threshold for Msg3, second threshold for Msg5) independently, allowing each message type to be optimized according to its specific requirements rather than using a unified threshold approach.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements local quality by applying different threshold values and repeat transmission quantities tailored to each message type (Msg3 vs. Msg5). Each message can have its own optimized parameters based on its specific characteristics, such as importance, size, and channel requirements, rather than applying a uniform configuration to all messages.

Inventive Principle:

Principle #3Local quality

3Adaptability or versatility

If multiple transmission quantity request modes are supported for Msg5, then system flexibility is improved, but signaling overhead increases

Engineering Contradiction:

Improvesystem flexibilityVSAvoidsignaling overhead

Core Design Contradiction:

Adaptability or versatilityVSLoss of information

Solution Approach 1:

The patent applies the taking out principle by extracting the transmission quantity request functionality into separate, independent modes. The terminal device can select from multiple request modes (e.g., mode 1, mode 2, mode 3) each with different signaling characteristics, allowing the system to choose the most appropriate mode for each situation rather than using a single monolithic signaling approach.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent implements universality by designing a multi-functional transmission quantity request mechanism that can operate in multiple modes. The same basic framework supports different request approaches (e.g., explicit indication, implicit indication, fallback mechanisms), making the system versatile enough to handle various scenarios while maintaining a unified overall structure.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20250280449A1Communication method, device, storage medium, and program product

Publication Date: 2025.09.04 HUAWEI TECH CO LTD

AI summary

Embodiments of this disclosure provide a communication method, a terminal device, a network device, a computer-readable storage medium, and a computer program product. In the method, a first communication apparatus receives a first threshold, where the first threshold is used to determine whether acknowledgment information of a message 4 (Msg4) in a random access procedure between the first communication apparatus and a second communication apparatus is repeatedly transmitted; and the first communication apparatus performs the random access procedure based on the first threshold. In this way, a transmission quantity of the acknowledgment information of the Msg4 is controlled based on the first threshold, to save transmission resources and provide high flexibility for transmission of the acknowledgment information of the message 4.