Reciprocal RIM Reference Signals for Base Station Interference Identification
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, remote interference between base stations due to overlapping downlink and uplink signals is challenging, especially when multiple aggressor base stations interfere with a single victim base station, making it difficult to effectively mitigate interference using existing remote interference management (RIM) operations.
Innovation Solution
Base stations employ a framework for RIM reference signal transmission, where a victim base station transmits a first reference signal to identify itself to an aggressor base station, and the aggressor base station responds with a second reference signal, enabling both to perform coordinated RIM operations to mitigate interference, including altering transmission parameters and angles to reduce interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a victim base station transmits reference signals to identify aggressor base stations, then interference identification precision is improved, but system complexity increases due to coordinated RIM operations between multiple base stations
Solution Approach 1:
The patent introduces reference signals as an intermediary mechanism that enables the victim base station to identify aggressor base stations. The reference signal acts as a mediator that carries identification information, allowing the victim base station to detect and locate interfering signals without direct communication between aggressor and victim stations, thus improving identification precision while managing system complexity
Solution Approach 2:
The patent implements a feedback mechanism where the victim base station transmits reference signals and receives responses from aggressor base stations. This feedback loop enables coordinated RIM operations, allowing both stations to adjust their transmission parameters based on the identified interference conditions, resolving the contradiction between precise identification and system complexity
2Reliability
If coordinated RIM operations are performed between victim and aggressor base stations, then interference mitigation effectiveness is improved, but communication overhead increases due to reference signal transmission and response coordination
Solution Approach 1:
The patent extracts the essential interference mitigation function from complex coordinated operations by using reference signals that carry embedded identification information. This extraction allows the system to achieve effective interference mitigation while minimizing communication overhead, as the reference signal itself contains the necessary identification data without requiring additional extensive coordination messages
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A method, base station (BS), user equipment (UE), apparatus, and computer program product for wireless communication are provided. An aggressor BS may cause a remote interference condition for a victim BS, and the victim BS may transmit a reference signal to the aggressor BS to enable a remote interference management (RIM) operation to be performed. However, the aggressor BS may be unable to identify the victim BS based at least in part on the reference signal, and may fail to transmit a reference signal as a response. Further, when the aggressor BS does transmit a reference signal, the victim BS may be unable to identify the aggressor BS. This may reduce an effectiveness of RIM operations. In some aspects, BSs may transmit reciprocal reference signals including identification information to enable effective RIM operations.