Interference Measurement Signal Power Control
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Solution Overview
Problem
In communications systems with flexible duplex modes, cross-link interference between neighboring cells poses challenges due to dynamic changes in transmission directions, which existing power control methods fail to address effectively, especially in systems with semi-static TDD configurations.
Innovation Solution
An interference measurement method is implemented where terminals send interference measurement signals on designated resources, allowing for dynamic measurement of interference strength between links in different directions, enabling timely power control adjustments to mitigate interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If flexible duplex modes are used to dynamically allocate uplink and downlink resources, then resource utilization is improved, but cross-link interference between neighboring cells increases
Solution Approach 1:
The patent implements dynamic TDD configuration where uplink-downlink slot configurations can be changed in real-time based on service requirements. The network device can dynamically adjust the configuration of flexible frequency bands between uplink and downlink, allowing the system to adapt to varying traffic patterns while managing interference through coordinated configuration changes across neighboring cells
Solution Approach 2:
The patent introduces an interference measurement mechanism where terminals measure interference on specific resources and report back to the network device. The network device uses this feedback information to adjust power control parameters and configure interference mitigation strategies, creating a closed-loop system that responds to actual interference conditions
2Object-affected harmful factors
If fixed frequency spectrums in pairs and fixed uplink-downlink slot configuration are used, then interference between cells is reduced, but resource utilization deteriorates
Solution Approach 1:
The patent transforms fixed configurations into dynamic ones by introducing flexible frequency bands that can be reconfigured between uplink and downlink based on real-time service demands. The network device can adjust the uplink-downlink configuration of flexible frequency bands dynamically, allowing resource utilization to improve while maintaining interference management through coordinated configurations
3Object-affected harmful factors
If power control adjustments are made based on interference measurements, then cross-link interference is reduced, but system complexity increases
Solution Approach 1:
The patent extracts the interference measurement function to specific dedicated resources (interference measurement resources) separate from data transmission resources. Terminals measure interference on these dedicated resources and report only the measurement results, rather than processing all signals. This separation simplifies the overall system by isolating the measurement function to specific, controlled elements
Data Source
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AI summary
This application provides an interference measurement method. A first terminal sends an interference measurement signal on an interference measurement resource, where the interference measurement signal is a signal used to measure interference between links in different directions, and the different directions include a downlink direction between the first terminal and a first network device and an uplink direction between a second terminal and a second network device; and the second terminal monitors interference measurement signal strength based on information about the interference measurement resource and information about the interference measurement signal. The second terminal may further perform power control based on interference measurement, that is, control, based on the interference measurement signal strength, power at which the second terminal sends a data signal to the second network device. In addition, this application further provides a device related to interference measurement, to ensure actual application and implementation of the foregoing method.