Uplink Resource Muting for Cross-Link Interference Measurement
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Solution Overview
Problem
In wireless communication systems, especially in 5G networks, accurate measurement of cross-link interference (CLI) is hindered when user equipment (UE) is not capable of supporting non-transparent uplink resource muting, leading to degraded measurement accuracy and network performance.
Innovation Solution
The implementation of capability signaling between UE and network nodes to indicate support for uplink resource muting patterns, allowing the UE to refrain from transmitting on muted resources during CLI measurements, thereby improving measurement accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If uplink resource muting is implemented for CLI measurements, then measurement accuracy is improved, but device complexity increases due to capability signaling requirements
Solution Approach 1:
The UE transmits capability signaling in advance to indicate whether it supports uplink resource muting for CLI measurements. This preliminary action allows the network node to configure appropriate muting patterns before actual measurements are performed, resolving the contradiction by preparing the system state beforehand to enable accurate measurements without adding operational complexity during the measurement process
2Measurement precision
If UE mutes uplink resources during CLI measurements, then measurement accuracy is improved, but loss of information occurs due to missed uplink transmissions
Solution Approach 1:
The system dynamically configures uplink resource muting patterns based on the UE's capability signaling and current CLI measurement requirements. The network node can adjust which uplink resources are muted and which are maintained, allowing flexible adaptation between measurement accuracy and data transmission needs, thus resolving the contradiction through dynamic resource allocation
Solution Approach 2:
The uplink resources are segmented into muted resources (for CLI measurement) and non-muted resources (for data transmission). This segmentation allows the system to isolate specific resources for measurement purposes while preserving other resources for normal communication, reducing information loss while maintaining measurement accuracy
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, an UE may transmit, to a first network node, capability signaling associated with an uplink resource muting, the capability signaling indicating that the UE is capable of muting an uplink resource during a transmission of a reference signal from a second network node for an inter-network-node cross-link interference (CLI) measurement. The UE may receive, from the first network node, an indication associated with the uplink resource muting in accordance with the capability signaling. Numerous other aspects are described.