Uplink Power Capability Signaling for Accurate Wireless Scheduling

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Solution Overview

Problem

Existing wireless communication systems face challenges in accurately controlling the transmit power of terminal devices due to unknown uplink duty cycle capabilities, leading to inaccurate power scheduling by network devices.

Innovation Solution

The terminal device transmits first indication information to the network device, indicating its maximum transmit power capability, allowing the network device to perform precise power scheduling based on this information.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If the network device performs uplink scheduling without knowing the terminal's maximum transmit power capability, then the scheduling can be performed without additional signaling overhead, but the transmit power control accuracy deteriorates

Engineering Contradiction:

Improvesignaling overheadVSAvoidtransmit power control accuracy

Core Design Contradiction:

Loss of informationVSMeasurement precision

Solution Approach 1:

The terminal device performs preliminary action by determining its maximum transmit power capability before uplink scheduling and proactively reporting this information to the network device through indication information. This allows the network device to have advance knowledge of the terminal's power capabilities, enabling accurate transmit power control without requiring complex real-time measurements or feedback loops.

Inventive Principle:

Principle #10Preliminary action

2Measurement precision

If the terminal device reports its maximum transmit power capability to the network device, then the transmit power control accuracy is improved, but the signaling overhead increases

Engineering Contradiction:

Improvetransmit power control accuracyVSAvoidsignaling overhead

Core Design Contradiction:

Measurement precisionVSLoss of information

Solution Approach 1:

Instead of reporting complete and detailed power capability information continuously, the terminal device applies partial action by reporting only the essential maximum transmit power capability information when needed. The indication information contains targeted power class or maximum power values that are sufficient for the network device to perform accurate scheduling, avoiding unnecessary detailed reporting that would increase signaling overhead.

Inventive Principle:

Principle #16Partial or excessive action

3Adaptability or versatility

If the network device schedules uplink transmission without accurate knowledge of terminal power capability, then the scheduling flexibility is maintained, but the uplink transmission reliability deteriorates

Engineering Contradiction:

Improvescheduling flexibilityVSAvoiduplink transmission reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The terminal device provides feedback to the network device by reporting its maximum transmit power capability through indication information. This feedback mechanism enables the network device to adapt its uplink scheduling decisions to match the terminal's actual power capabilities, ensuring reliable transmission while maintaining scheduling flexibility. The network device can adjust resource allocation, modulation schemes, and power commands based on the received power capability information.

Inventive Principle:

Principle #23Feedback

Data Source

PatentEP4654636A1Wireless communication methods, terminal devices and network devices

Publication Date: 2025.11.26 GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD

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AI summary

Provided in the present application are wireless communication methods, terminal devices, and network devices. A method comprises: a terminal device sends first indication information to a network device, the first indication information being used for indicating first information, and the first information being related to the maximum transmission power capability of the terminal device.