Dynamic CLI Measurement Control for Cross-Link Interference
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Solution Overview
Problem
In wireless communication systems, UEs near each other experience cross-link interference (CLI) due to differing uplink-downlink slot formats, leading to inefficient CLI measurements that consume power and cause signaling overhead through RRC reconfigurations.
Innovation Solution
A dynamic control mechanism is introduced to enable or disable CLI measurements without full RRC reconfiguration, allowing UEs to skip CLI measurements in response to a dynamic control signal from the base station.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If CLI measurements are continuously performed based on RRC configuration, then interference management capability is maintained, but power consumption increases and signaling overhead occurs
Solution Approach 1:
The patent implements dynamic control of CLI measurements by introducing a MAC CE activation command that can enable or disable measurements in real-time. This allows the system to transition from static continuous measurements to dynamic on-demand measurements, reducing power consumption when CLI management is not immediately needed while maintaining the capability when required.
Solution Approach 2:
The patent changes the operational state parameter of CLI measurements from a fixed RRC-configured state to a dynamically controllable state through MAC CE signaling. This parameter change enables the measurements to be activated or deactivated based on current network conditions, resolving the contradiction between maintaining capability and reducing power consumption.
2Loss of energy
If RRC reconfiguration is used to disable CLI measurements, then measurements can be stopped, but signaling overhead increases and resource efficiency decreases
Solution Approach 1:
The patent segments the CLI measurement control into two independent parts: RRC configuration (which sets up the measurement parameters) and MAC CE activation (which controls whether measurements are performed). This segmentation allows the system to maintain measurement capability without continuously performing measurements, reducing signaling overhead compared to full RRC reconfiguration.
Solution Approach 2:
The patent introduces MAC CE signaling as an intermediary mechanism between the RRC configuration layer and the actual measurement execution. This intermediary allows for lightweight activation/deactivation of measurements without triggering full RRC reconfiguration procedures, thereby reducing signaling overhead and improving radio resource efficiency.
3Reliability
If CLI measurements are always enabled, then interference management is robust, but system efficiency decreases due to unnecessary measurements
Solution Approach 1:
The patent implements a feedback-based control mechanism where the network can monitor CLI conditions and dynamically activate or deactivate measurements through MAC CE commands. This feedback loop ensures that measurements are performed only when necessary to maintain robust interference management, thereby improving system efficiency by eliminating unnecessary measurements while preserving reliability when needed.
Data Source
AI summary
Methods, apparatuses, and computer readable medium for wireless communication is provided to dynamic disabling and enabling of cross-link interference (CLI) measurements. An example method includes receiving a configuration from a base station for CLI measurement. The example method further includes receiving a dynamic control signal from the base station to disable the CLI measurement. The example method further includes skipping one or more CLI measurements in response to receiving the dynamic control signal.