UL Muting Pattern Exchange for Cross-Link Interference Management
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G NR, face challenges in managing uplink (UL) muting patterns to reduce cross-link interference during measurements, which affects the efficiency and accuracy of CLI measurements and overall communication performance.
Innovation Solution
Implementing a method where network entities exchange UL muting patterns with user equipment (UEs) to restrict UL transmissions based on specific muting indications, allowing for configurable muted time and frequency resources to minimize interference during CLI measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If UL muting pattern is implemented to reduce cross-link interference during CLI measurements, then measurement accuracy is improved, but UL transmission efficiency deteriorates due to restricted transmission resources
Solution Approach 1:
The patent implements dynamic UL muting patterns where network entities can adjust muting configurations based on measurement requirements and traffic conditions. The muting pattern is not fixed but can be modified through RRC signaling to balance measurement accuracy and transmission efficiency according to current network state
Solution Approach 2:
The patent applies muting selectively to specific time-frequency resources rather than uniformly across all resources. By identifying specific CLI measurement occasions and applying muting only to those targeted resources, the system maintains measurement accuracy while preserving UL transmission efficiency on non-muted resources
2Reliability
If network entities exchange UL muting patterns with UEs, then interference management is improved, but signaling overhead increases
Solution Approach 1:
The patent configures UL muting patterns in advance through RRC signaling before CLI measurements are performed. By pre-configuring the muting patterns based on anticipated measurement requirements, the system establishes reliable interference management without requiring continuous real-time signaling during measurement operations
Solution Approach 2:
The patent employs periodic CLI measurement configurations where UL muting patterns are applied at regular measurement intervals. This periodic approach allows the system to maintain reliable interference management during measurement occasions while minimizing signaling overhead between periodic measurement cycles
Data Source
AI summary
A method for wireless communication at a user equipment (UE) and related apparatus are provided. In the method, a first network entity receives, from a second network entity, an uplink (UL) muting indication. The UL muting indication includes a UL muting pattern for a cross-link interference (CLI) measurement related to the first network entity and the second network entity. The first network entity further indicates, to one or more user equipment (UEs), the UL muting pattern for the one or more UEs to restrict first UL transmission to the first network entity based on the UL muting pattern. The method reduces the interferences during the measurement and transmission and improves the efficiency of wireless communication.