Reference signal configuration for measuring cross-link interference in a full duplex environment
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Solution Overview
Problem
Existing wireless communication systems face challenges in managing cross-link interference due to full-duplex communications, leading to increased latency and decreased throughput, as current methods for configuring resources for cross-link interference measurements result in excessive overhead and degraded performance.
Innovation Solution
Configuring zero-power and non-zero-power resources for cross-link interference measurements, aligning transmitting and receiving UEs, and reducing control signaling overhead through common configurations, enabling efficient interference mitigation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate control signaling is used to configure cross-link interference measurement resources for each UE, then measurement accuracy is improved, but control signaling overhead increases and spectral efficiency decreases
Solution Approach 1:
The patent combines separate UE-specific control signaling into a common group-based configuration. Multiple UEs are grouped together and configured with shared reference signal resources for cross-link interference measurement, reducing the total control signaling overhead while maintaining measurement capability through group-specific configurations.
Solution Approach 2:
The patent creates universal group-based reference signal configurations that can be applied to multiple UEs simultaneously. The same reference signal resources are configured for groups of UEs, allowing the system to serve multiple users with a single configuration message, thereby improving spectral efficiency while enabling cross-link interference measurement.
2Measurement precision
If more reference signal resources are allocated for cross-link interference measurement, then measurement precision is improved, but resource overhead increases and throughput decreases
Solution Approach 1:
The patent segments the UE population into groups based on their cross-link interference measurement requirements. Instead of allocating resources to every UE individually, the system divides UEs into groups and allocates reference signal resources at the group level, reducing total resource consumption while maintaining measurement precision for each group.
Solution Approach 2:
The patent implements partial measurement coverage by configuring reference signals for groups of UEs rather than all UEs simultaneously. This partial action approach reduces resource overhead while still providing cross-link interference measurement capability where needed, balancing measurement precision with system throughput.
3Reliability
If frequent cross-link interference measurements are performed, then interference mitigation performance is improved, but latency increases and system performance degrades
Solution Approach 1:
The patent implements periodic cross-link interference measurement configurations for grouped UEs, where measurements are performed at regular intervals rather than continuously. This periodic approach reduces the time loss associated with frequent measurements while maintaining reliable interference mitigation by updating measurements at optimal intervals.
Data Source
AI summary
Techniques and apparatus for configuring a reference signal for measuring cross-link interference in wireless communication systems. A method that may be performed by a user equipment (UE) includes receiving signaling indicating a configuration for a reference signal for measuring cross-link interference and indicating a type of the reference signal as zero-power or non-zero-power; and taking one or more actions in response to the type of the reference signal.