Layer 1 Cross-Link Interference Management for Low-Latency Scheduling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication networks face challenges in managing cross-link interference (CLI) due to large delays and latencies associated with layer 3 (L3) radio resource control (RRC) layer measurements and reporting, which degrade receiver performance and reduce throughput.
Innovation Solution
Implementing layer 1 (L1) cross-link interference management through periodic, semi-persistent, and aperiodic measurement and reporting configurations, utilizing channel state information (CSI) and cross-link interference (CLI) measurements to enhance scheduling and resource allocation in wireless networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If layer 3 (RRC layer) measurements and reporting are used for cross-link interference management, then the system can perform interference management, but large delays and latencies occur which degrade receiver performance and reduce throughput
Solution Approach 1:
The patent segments the interference management function by introducing a separate layer 1 (physical layer) measurement mechanism independent from the traditional layer 3 RRC layer. This segmentation allows fast physical layer measurements to operate concurrently with slower RRC layer procedures, reducing the overall delay while maintaining reliability through multi-layer cooperation.
Solution Approach 2:
The patent implements preliminary action by performing layer 1 CLI measurements in advance before scheduling decisions are made. The user equipment performs measurements of downlink reference signals from neighboring cells and reports them to the network node, which then uses this advance information to make informed scheduling decisions, thereby reducing latency and improving receiver performance.
2Loss of time
If layer 1 (L1) cross-link interference management is implemented, then latency is reduced and communication reliability is improved, but measurement and reporting complexity increases
Solution Approach 1:
The patent applies universality by designing the layer 1 measurement mechanism to serve multiple functions: it measures CLI for interference management, identifies suitable beams for communication, and provides information for scheduling decisions. This multi-functionality reduces the need for separate dedicated measurement procedures, thereby managing complexity while achieving low latency.
Solution Approach 2:
The patent implements feedback mechanisms where the user equipment measures CLI and reports to the network node, which then adjusts scheduling decisions. This feedback loop enables dynamic adaptation to interference conditions, reducing latency by allowing real-time adjustments while managing complexity through structured feedback protocols.
3Productivity
If periodic, semi-persistent, and aperiodic measurement configurations are used, then resource allocation efficiency is improved, but system complexity increases
Solution Approach 1:
The patent applies dynamics by implementing three flexible measurement configuration types (periodic, semi-persistent, and aperiodic) that can adapt to different network conditions and requirements. This dynamic approach allows the system to optimize resource allocation efficiency by selecting the appropriate configuration type based on current traffic patterns and interference conditions, while managing complexity through standardized configuration protocols.
Data Source
AI summary
The present application relates to devices and components including apparatus, systems, and methods for supporting layer 1 cross-link interference measurement and reporting.