UE-to-UE Cross-Link Interference Reporting in Dynamic TDD
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in effectively managing UE-to-UE cross-link interference (CLI) in full-duplex and dynamic TDD scenarios, which can degrade network performance and reliability.
Innovation Solution
Implementing techniques for UE-to-UE CLI reporting by measuring and transmitting characteristics of UE-to-UE CLI reference signals in uplink and sub-bands of network node symbols, allowing network nodes to adjust communication configurations for improved performance and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If full-duplex communication is implemented to improve spectral efficiency and network capacity, then system throughput increases, but UE-to-UE cross link interference occurs degrading communication reliability
Solution Approach 1:
The patent implements a feedback mechanism where UEs measure CLI reference signals and report CLI metrics to the network node. The network node uses this feedback information to dynamically adjust communication parameters, transmit power, or resource allocation to mitigate UE-to-UE cross link interference, thereby maintaining communication reliability while enabling full-duplex operation
Solution Approach 2:
The patent dynamically changes communication parameters including transmit power levels, resource block allocations, and modulation schemes based on measured CLI conditions. The network node adjusts these parameters in response to CLI reports to optimize the balance between spectral efficiency and communication reliability in full-duplex scenarios
2Adaptability or versatility
If dynamic TDD configurations are used to improve resource utilization, then network flexibility increases, but cross link interference between uplink and downlink increases
Solution Approach 1:
The patent employs feedback through CLI measurement and reporting mechanisms that enable the network to monitor interference levels in dynamic TDD configurations. Based on this feedback, the network can adjust TDD slot formats, switch between uplink and downlink directions, or modify resource allocation to reduce cross link interference while maintaining network flexibility
Solution Approach 2:
The patent implements dynamic adjustment of TDD configurations based on real-time CLI conditions. The network can dynamically switch between different TDD patterns, adjust slot formats, and reconfigure resource blocks in response to measured interference levels, enabling adaptive optimization of network flexibility versus interference mitigation
3Reliability
If UE-to-UE CLI measurement and reporting is implemented to mitigate interference, then communication quality improves, but system complexity increases
Solution Approach 1:
The patent extracts the CLI measurement and reporting functionality as a separate, dedicated mechanism with specific reference signals and reporting formats. This modular approach isolates the complexity of interference management into a distinct subsystem, making it easier to implement and maintain while improving communication quality through targeted CLI mitigation
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may measure a characteristic of a UE-to-UE cross link interference (CLI) reference signal in an uplink sub-band (SB) of a network node sub-band full-duplex (SBFD) symbol. The UE may transmit a report including information associated with the characteristic of the UE-to-UE CLI reference signal in the uplink SB. Numerous other aspects are described.