Power Headroom Reporting for Full-Duplex Cross-Link Interference Control
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Solution Overview
Problem
The existing wireless communication systems face challenges in measuring and addressing cross-link interference between terminals, particularly in full-duplex transmission scenarios, as base stations cannot obtain measurement results until after scheduling is complete.
Innovation Solution
Implementing a power headroom report method that includes reporting capability information, such as support for full duplex, through specific channels and resources, allowing base stations to adjust transmit power and manage interference effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If full-duplex transmission is implemented to increase data rate and spectrum efficiency, then productivity is improved, but cross-link interference between terminals occurs causing loss of information
Solution Approach 1:
The terminal performs cross-link interference measurement before data transmission by receiving a reference signal from another terminal. Based on this preliminary measurement, the terminal determines whether to transmit data, thereby preventing interference-related information loss before it occurs
Solution Approach 2:
The measurement result of cross-link interference is fed back to control the data transmission decision. The terminal uses the measured interference level to determine whether the channel is suitable for transmission, creating a closed-loop control system that prevents information loss
2Ease of operation
If base station schedules terminals without prior interference measurement, then ease of operation is improved, but measurement precision is insufficient because measurement can only be done at terminal after scheduling
Solution Approach 1:
The system performs preliminary interference measurement by transmitting a reference signal before actual data transmission. This allows the terminal to measure cross-link interference in advance, providing accurate measurement data for scheduling decisions
Solution Approach 2:
A reference signal is introduced as an intermediary element between scheduling and data transmission. This reference signal enables the terminal to measure cross-link interference without requiring base station involvement in the measurement process, maintaining ease of operation while improving measurement precision
Data Source
AI summary
There is provided a power headroom report method, a configuring method, a power control method, a data transmission method, a terminal, a base station, and an apparatus of the same. The power headroom report method may include reporting capability information, and reporting power headroom according to a report condition corresponding to the capability information, wherein the capability information includes: information indicating whether the terminal supports full duplex.