PUCCH Parameter Determination for Unconfigured HARQ-ACK Transmission

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Solution Overview

Problem

In a 5G mobile communications system, user equipment (UE) faces challenges in determining parameters for a physical uplink control channel (PUCCH) resource when these parameters are not configured by the network device, affecting the transmission of hybrid automatic repeat request acknowledgment (HARQ-ACK) information.

Innovation Solution

A method for a terminal device to determine target parameters for PUCCH transmission based on parameter information of specified objects, such as spatial relation and power control parameters, using conditions like receipt of DCI from a TRP or multiple TRPs, or occurrence of periodic resources, and a network device configures PUCCH resources using RRC or MAC CE to facilitate grouping.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If the network device does not configure or activate related parameters for the PUCCH resource, then network resource overhead is reduced, but the terminal device cannot determine the target parameter for PUCCH transmission

Engineering Contradiction:

Improvenetwork resource overheadVSAvoidparameter determination capability

Core Design Contradiction:

Quantity of substanceVSEase of operation

Solution Approach 1:

The terminal device determines PUCCH parameters autonomously based on preset conditions and received signal information, without requiring explicit network configuration for each parameter. The terminal serves itself by deriving spatial relation information and power control parameters from downlink reference signals and DCI indications.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The network device configures reference signals and PUCCH resources in advance, establishing the framework for parameter determination. The terminal device then uses these pre-configured elements to determine target parameters by evaluating preset conditions against received signal characteristics.

Inventive Principle:

Principle #10Preliminary action

2Ease of operation

If the terminal device determines parameters autonomously based on preset conditions, then parameter determination capability is improved, but the complexity of determining which condition applies increases

Engineering Contradiction:

Improveparameter determination capabilityVSAvoidcondition evaluation complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The parameter determination process is segmented into distinct evaluation paths based on different preset conditions: single TRP condition, multiple TRPs condition, and periodic resource condition. Each condition has specific evaluation criteria and corresponding parameter determination rules, making the complex decision process manageable through structured segmentation.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS12464527B2Parameter determining method, information configuration method, and device

Publication Date: 2025.11.04 VIVO MOBILE COMM CO LTD

AI summary

This disclosure provides a parameter determining method, an information configuration method, and a device. The parameter determining method includes: in a case that a first preset condition is met, determining, based on parameter information of a specified object, a target parameter used in transmitting a PUCCH on a target physical uplink control channel PUCCH resource, where the specified object includes one of a specified resource, a specified channel, and a specified signal, and the target parameter includes at least one of spatial relation information and a power control parameter.