CLI Measurement Resource Preemption for Accurate UE Interference Reporting
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing cross-link interference (CLI) measurements, leading to unnecessary power consumption and inaccurate reporting due to the measurement of non-existent interference.
Innovation Solution
A method and apparatus for wireless communication systems that allow a user equipment (UE) to receive an indication to refrain from measuring or filtering CLI in specific portions of the CLI measurement resource, using dynamic signaling akin to downlink preemption or uplink cancellation, enabling accurate reporting and power savings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If UE continuously measures CLI in all configured measurement resources, then measurement coverage is complete, but power consumption increases and measurement accuracy decreases due to measuring non-existent interference
Solution Approach 1:
The network entity performs preliminary action by determining which CLI measurement resources will actually contain interference before the UE performs measurements. The network entity identifies resources where the second UE is scheduled to transmit and sends indication information to the first UE in advance, allowing the UE to skip measurements in resources where no interference exists, thereby reducing power consumption while maintaining measurement accuracy.
2Reliability
If UE measures CLI in all configured measurement resources, then measurement completeness is maintained, but power consumption increases unnecessarily
Solution Approach 1:
The network entity performs preliminary action by determining which CLI measurement resources will actually contain interference before the UE performs measurements. The network entity identifies resources where the second UE is scheduled to transmit and sends indication information to the first UE in advance, allowing the UE to skip measurements in resources where no interference exists, thereby reducing power consumption while maintaining measurement accuracy.
Solution Approach 2:
The indication information mechanism extracts and removes the unnecessary measurement tasks from the UE's workload. By identifying and indicating specific resources where interference does not exist, the system extracts these resources from the set of resources requiring measurement, allowing the UE to focus only on meaningful measurements and reduce overall power consumption.
3Ease of operation
If UE measures CLI in resources where no interference exists, then measurement process is simplified, but measurement accuracy decreases
Solution Approach 1:
The network entity performs preliminary action by determining which CLI measurement resources will actually contain interference before the UE performs measurements. The network entity identifies resources where the second UE is scheduled to transmit and sends indication information to the first UE in advance, allowing the UE to skip measurements in resources where no interference exists, thereby reducing power consumption while maintaining measurement accuracy.
Data Source
AI summary
This disclosure provides methods, components, devices and systems for preemption of CLI measurement and filtering in a CLI measurement resource. Some aspects more specifically relate to skipping measurement or filtering of CLI in response to a dynamic signal. In some examples, a base station may send a first UE a dynamic signal indicating the first UE is not to measure or filter CLI from a second UE in a CLI measurement resource indicated in the dynamic signal. The CLI measurement resource may be previously configured in a CLI resource configuration, such as an RRC configuration indicating time-frequency resources associated with a CLI-RSSI resource or an SRS resource, and the dynamic signal may indicate one or more of these time-frequency resources in which the UE is to skip measuring or filtering CLI. After receiving the dynamic signal, the UE may skip measuring or filtering CLI in the indicated resources.