Inter-gNB CLI Measurement Resource Mapping for Full Duplex Links
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in effectively mitigating cross-link interference (CLI) between network devices, particularly in scenarios involving in-band full duplex (IBFD) and sub-band full duplex (SBFD) communications, due to overlapping time and frequency resources, which legacy measurement reporting configurations fail to address.
Innovation Solution
A measurement resource configuration is implemented, including resource mapping and identification information, allowing network nodes to transmit and receive reference signals to accurately measure and mitigate CLI, enhancing communication with user equipment (UEs).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If legacy measurement reporting configurations are used, then device complexity is reduced, but cross-link interference measurement precision deteriorates
Solution Approach 1:
The measurement resource configuration is segmented into distinct components including resource mapping information, resource identification information, and CLI measurement parameters. This segmentation allows each component to be optimized independently for its specific function while maintaining overall system coherence, thereby improving measurement precision without proportionally increasing complexity.
Solution Approach 2:
The patent introduces new configuration parameters specifically for inter-gNB CLI measurement, including resource mapping information that defines time-frequency resources, resource identification information for reference signals, and measurement parameter settings. These parameter changes enable precise CLI measurement by providing detailed control over measurement resources while maintaining manageable complexity through structured parameter organization.
2Measurement precision
If reference signals are transmitted for CLI measurement, then measurement accuracy is improved, but interference between network nodes increases
Solution Approach 1:
The network nodes exchange measurement resource configurations and resource mapping information before actual CLI measurement takes place. This preliminary action allows receiving nodes to prepare appropriate measurement resources and filtering configurations in advance, enabling accurate CLI measurement of reference signals while minimizing the impact of these measurement signals on overall system interference.
Solution Approach 2:
The patent introduces measurement resource configuration information as an intermediary layer between network nodes. This intermediary contains resource mapping information and identification information that enables nodes to identify and measure CLI from specific reference signals without directly interfering with each other's data transmissions, thus improving measurement accuracy while controlling interference.
3Measurement precision
If detailed resource mapping information is configured, then CLI measurement accuracy is improved, but signaling overhead increases
Solution Approach 1:
The measurement resource configuration structure is designed to serve multiple functions simultaneously: it provides resource mapping information for CLI measurement, resource identification information for reference signal recognition, and measurement parameter settings. This multi-functionality reduces the need for separate signaling messages for each aspect, thereby improving measurement accuracy while controlling overall signaling overhead.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first network node may transmit, to a second network node, a measurement resource configuration. The first network node may transmit a reference signal in accordance with the measurement resource configuration. The first network node may receive, from the second network node, a cross-link interference (CLI) measurement. The first network node may communicate with one or more user equipments (UEs) in accordance with the CLI measurement. Numerous other aspects are described.