Jamming Signal Receiver for 5G URLLC Interference Cancellation
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Solution Overview
Problem
Ultra-reliable low latency communications (URLLC) networks in 5G are susceptible to radio jamming, which can disrupt critical industrial operations, whether intentional or unintentional, posing a challenge for achieving high reliability and low latency.
Innovation Solution
A dedicated jamming signal receiver, separate from base stations, detects and obtains a sample waveform of the jamming signal, processes it to improve quality, and sends information to the network core, which distributes it to base stations for interference cancellation, using techniques like spatial domain filtering, null-steering, and learning rules to minimize jamming energy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dedicated jamming signal receiver is deployed to detect and obtain sample waveforms of jamming signals, then the reliability of URLLC networks is improved by enabling interference cancellation, but the device complexity and system cost increase
Solution Approach 1:
The system is divided into functional segments: a dedicated jamming signal receiver that operates independently from base stations to detect and sample jamming signals, and base stations that receive the sampled waveforms for interference cancellation. This segmentation allows the complex jamming detection function to be isolated in a dedicated device while base stations focus on communication and cancellation.
Solution Approach 2:
The dedicated jamming signal receiver acts as an intermediary between the jamming signal source and the base stations. It receives jamming signals, processes them into sample waveforms, and transmits this information to base stations, which then use the samples for interference cancellation. This intermediary role enables reliable jamming detection without requiring each base station to independently handle complex detection tasks.
2Measurement precision
If spatial domain filtering and null-steering techniques are applied to avoid interfering signals from scheduled user equipment, then the quality of jamming signal samples is improved, but the processing time and computational complexity increase
Solution Approach 1:
The system performs preliminary actions by obtaining jamming signal samples during periods when user equipment transmissions are scheduled or predicted to be minimal. The dedicated receiver proactively captures jamming signal waveforms before they fully interfere with communications, allowing processing to occur in advance rather than reacting to interference after it occurs.
Solution Approach 2:
The system applies spatial domain filtering and null-steering selectively rather than continuously. These processing techniques are applied partially - only when and where needed to obtain sufficient jamming signal samples, rather than processing all incoming signals through complex filtering, thus reducing overall computational burden while maintaining sample quality.
3Productivity
If jamming signal samples are obtained during scheduled user equipment transmissions, then the availability of jamming signal information is improved, but the presence of interfering signals degrades the quality of the samples
Solution Approach 1:
The dedicated jamming signal receiver applies different processing strategies for different temporal and spatial conditions. During periods when user equipment transmissions are present, the receiver uses spatial domain filtering and null-steering to create localized reception zones that prioritize jamming signal capture while suppressing user equipment interference. When user transmissions are absent, the receiver captures jamming signals directly without additional processing.
Data Source
AI summary
There is disclosed an apparatus. The apparatus comprises means for performing: in response to detecting a jamming signal, obtaining a sample waveform of the jamming signal; and sending information of the jamming signal to another apparatus.