Remote Interference Management Reference Signal Transmission
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Solution Overview
Problem
Current wireless communication systems face challenges in managing remote interference across multiple sub-bands, leading to inefficient resource utilization and persistent interference issues due to the limitations of existing reference signal transmission methods.
Innovation Solution
A method and apparatus for detecting interference in a remote interference management scenario, where a base station identifies and transmits reference signals to indicate the specific sub-bands affected by interference, allowing for targeted interference mitigation and improved network resource utilization by distinguishing between fully and partially interfered sub-bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional reference signal transmission methods are used, then interference management is simplified, but interference mitigation effectiveness deteriorates due to inability to distinguish between fully and partially interfered sub-bands
Solution Approach 1:
The patent segments the frequency spectrum into multiple sub-bands and further divides each sub-band into sub-sub-bands for granular interference detection. This segmentation enables the system to identify and mitigate interference at the sub-sub-band level, significantly improving interference mitigation effectiveness while maintaining manageable complexity through structured organization.
Solution Approach 2:
The patent applies local quality by transmitting reference signals with different densities in different sub-bands based on interference conditions. In sub-bands with detected interference, reference signals are transmitted at higher density to enable precise interference identification, while in clean sub-bands, lower density is used. This localized adaptation optimizes interference mitigation where needed while conserving resources elsewhere.
2Measurement precision
If reference signals are transmitted in all sub-bands at high density, then interference detection precision is improved, but network resource utilization deteriorates due to excessive resource consumption
Solution Approach 1:
The patent implements partial action by transmitting reference signals at high density only in sub-bands where interference is detected, rather than uniformly across all sub-bands. The reference signal density is adjusted based on interference conditions - high density in interfered sub-bands for precise detection, and low or no transmission in clean sub-bands to conserve resources.
Solution Approach 2:
The patent dynamically changes the reference signal transmission parameters (density, frequency, time) based on interference detection results. When interference is detected in a sub-band, the system increases reference signal density and adjusts transmission parameters to improve detection precision. When no interference is present, parameters are reduced to optimize network resource utilization.
3Reliability
If interference is mitigated by blocking entire sub-bands, then interference mitigation effectiveness is improved, but network resource utilization deteriorates due to blocking of unaffected portions
Solution Approach 1:
The patent segments sub-bands into smaller sub-sub-bands to enable granular interference mitigation. When interference is detected in only a portion of a sub-band, the system blocks only the affected sub-sub-bands while allowing transmission in unaffected sub-sub-bands. This segmentation approach maintains interference mitigation effectiveness while preserving resource utilization in clean frequency portions.
Solution Approach 2:
The patent applies local quality by applying different transmission policies to different portions of the frequency spectrum. Affected sub-sub-bands are blocked or have reduced transmission, while unaffected sub-sub-bands continue normal operations. This localized approach ensures reliable interference mitigation in contaminated areas while maintaining high resource utilization in clean areas.
4Adaptability or versatility
If reference signal transmission is increased to cover more sub-bands, then interference detection capability is improved, but system complexity and resource consumption deteriorate
Solution Approach 1:
The patent manages system complexity through hierarchical segmentation of the frequency spectrum into sub-bands and sub-sub-bands. This structured segmentation allows the system to scale interference detection capability by adjusting the granularity and coverage of monitored segments, rather than treating the entire spectrum as a single complex unit.
Solution Approach 2:
The patent creates a universal reference signal transmission framework that can adapt to different interference scenarios across multiple sub-bands. The same reference signal structure and detection mechanisms are applied universally across all sub-bands, but with configurable density and scope parameters that can be adjusted based on network conditions, providing both adaptability and manageable complexity.
Data Source
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AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a base station may detect interference, in a remote interference management (RIM) scenario, in a set of sub-bands of a plurality of sub-bands of a bandwidth portion. The base station may transmit, to identify the set of sub-bands in which interference is detected, a set of reference signals configured to indicate the set of sub-bands in which the interference is detected. Numerous other aspects are provided.