PUCCH Resource Mapping Across Multiple PRBs Under Power Limits

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Solution Overview

Problem

Existing wireless communication systems face limitations in PUCCH transmission due to regulatory constraints on maximum power spectral density and equivalent isotropic radiated power, leading to reduced coverage performance, particularly in unlicensed bands like 60 GHz, where conventional power boosting schemes are insufficient.

Innovation Solution

The solution involves determining a target PUCCH resource that includes at least one resource element in multiple physical resource blocks, allowing for PUCCH transmission across a configurable number of PRBs, optimizing coverage performance by balancing system overhead and interference management.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If PUCCH transmission is limited to one PRB under regulatory constraints, then power spectral density and equivalent isotropic radiated power limits are satisfied, but coverage performance is degraded

Engineering Contradiction:

Improvecoverage performanceVSAvoidtransmission resource configuration

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent segments the PUCCH transmission across multiple PRBs instead of confining it to a single PRB. By distributing the control channel transmission over multiple physical resource blocks, the system achieves better coverage performance while adhering to regulatory constraints on power spectral density and equivalent isotropic radiated power.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent extends PUCCH transmission from a single-dimension (one PRB) approach to a multi-dimensional approach by utilizing multiple PRBs. This dimensional expansion allows the system to improve coverage performance by spreading transmission resources across the frequency domain while maintaining compliance with regulatory power limits.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Reliability

If multiple PRBs are configured for PUCCH transmission, then coverage performance is improved, but system overhead and interference management complexity increase

Engineering Contradiction:

Improvecoverage performanceVSAvoidresource allocation and interference management

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies local quality by configuring PUCCH transmission with specific properties in different PRBs. Each PRB can have optimized transmission parameters tailored to local channel conditions, allowing the system to improve coverage performance while managing the complexity of multi-PRB resource allocation through localized optimization.

Inventive Principle:

Principle #3Local quality

Data Source

PatentEP4322658B1Wireless communication method, terminal device, and network device

Publication Date: 2026.03.25 GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD

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AI summary

A wireless communication method, a terminal device, and a network device are provided. The method includes the following. A terminal device determines a target physical uplink control channel (PUCCH) resource corresponding to a PUCCH, where the PUCCH resource includes at least one resource element (RE) in each of physical resource blocks (PRBs) of a target PRB-number, and the target PRB-number is a positive integer greater than or equal to 1. The terminal device transmits the PUCCH on the target PUCCH resource. As such, it is possible to realize transmission on at least one PRB by the terminal device, thereby improving uplink (UL) coverage performance of the terminal device.