Cross Link Interference Measurement Resource Configuration
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Solution Overview
Problem
Cross-link interference (CLI) in wireless networks, particularly due to large transmit power discrepancies and propagation conditions, negatively impacts network performance by causing detrimental interference between user equipment (UE) and base stations (BS).
Innovation Solution
Implementing CLI measurement indication apparatuses and methods that include CLI resource configuration, activation, deactivation, and on-demand configuration and activation, using Radio Resource Control (RRC) messages, Medium Access Control (MAC) Control Elements, and Layer 1/2 signaling to manage CLI resources for performing measurements and signal transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If CLI measurement resources are continuously configured and activated, then CLI measurement accuracy is improved, but network signaling overhead and resource management complexity increase
Solution Approach 1:
The patent implements dynamic CLI resource configuration where the network can activate or deactivate CLI measurement resources based on actual interference conditions. The MAC CE activation message enables flexible switching between different CLI resource sets without requiring full reconfiguration, allowing the system to adapt measurement activity to current network conditions and reduce unnecessary signaling overhead.
Solution Approach 2:
The patent divides CLI measurement resources into multiple separable resource sets, each configurable independently. This segmentation allows the network to activate only specific CLI resource sets when needed rather than continuously activating all resources, thereby reducing signaling overhead while maintaining measurement accuracy when interference is present.
2Adaptability or versatility
If multiple CLI resource sets are configured for different scenarios, then adaptability to various interference conditions is improved, but configuration and management complexity increases
Solution Approach 1:
The patent pre-configures multiple CLI resource sets with different parameters (time-domain, frequency-domain, beam configurations) during RRC setup, preparing them in advance for different interference scenarios. When specific interference conditions arise, the network simply activates the appropriate pre-configured resource set using MAC CE signaling, avoiding complex real-time configuration while maintaining high adaptability.
3Loss of energy
If CLI resources are activated on demand rather than continuously, then signaling overhead is reduced, but measurement response time may increase
Solution Approach 1:
The patent pre-configures multiple CLI resource sets with different parameters (time-domain, frequency-domain, beam configurations) during RRC setup, preparing them in advance for different interference scenarios. When specific interference conditions arise, the network simply activates the appropriate pre-configured resource set using MAC CE signaling, avoiding complex real-time configuration while maintaining high adaptability.
Data Source
AI summary
Some aspects of this disclosure relate to apparatuses and methods for implementing cross link interference (CLI) measurement indication. For example, a user equipment (UE) includes a transceiver configured to enable wireless communication with a base station and a processor communicatively coupled to the transceiver. The processor can be configured to receive, using the transceiver, a configuration message from the base station indicating a plurality of cross link interference (CLI) resources. The processor is further configured to receive, using the transceiver, an activation message from the base station activating one or more of the plurality of CLI resources. The processor is further configured to perform a CLI measurement during at least one CLI resource of the activated one or more of the plurality of CLI resources.