Excessive Interference Detection in 5G Network Devices
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Solution Overview
Problem
In modern wireless communication systems, particularly with 5G technology, network devices often experience excessive interference due to the proximity of aggressor network devices, leading to receiver malfunctions and potential permanent damage from strong incoming RF signals, which existing technologies fail to adequately mitigate.
Innovation Solution
A network device equipped with a transceiver and processor that detects excessive interference and responds by transmitting a notification to a network entity, switching to a different receive antenna beam, or alerting the user, thereby mitigating the interference through network-assisted, self-implemented, or user-interface-implemented methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If network devices are deployed in close proximity to increase network capacity, then network coverage and connectivity are improved, but excessive interference is generated causing receiver malfunctions and potential permanent damage
Solution Approach 1:
The interference detector proactively monitors incoming RF signals and detects excessive interference conditions before they cause receiver damage. By performing preliminary detection and triggering early warnings or mitigation actions, the system prevents the harmful effects from materializing, resolving the contradiction between deploying devices close together for capacity and preventing interference damage.
2Reliability
If the receiver processes strong incoming RF signals, then signal reception capability is maintained, but the low-noise amplifier enters compression or saturation causing non-linear behavior and signal degradation
Solution Approach 1:
The interference detector continuously monitors the RF signal strength and provides feedback about excessive interference conditions. This feedback mechanism enables the system to detect when the low-noise amplifier is approaching compression or saturation, allowing for timely mitigation actions that maintain both signal reception capability and amplifier linearity.
3Device complexity
If no interference detection mechanism is implemented, then device complexity is reduced, but receiver components are vulnerable to permanent failure from prolonged exposure to strong signals
Solution Approach 1:
The interference detector enables the receiver to self-monitor and self-protect against excessive interference. By incorporating this detection capability, the system performs its own health assessment and triggers mitigation actions without requiring external monitoring, thereby protecting receiver components from permanent failure while maintaining reasonable device complexity.
Data Source
AI summary
A network device is provided with excessive interference mitigation. In one implementation, the network device transmits a notification of the excessive interference to a network entity. In another implementation, the network device changes a receive beam or begins to acquire a new cell in response to a detection of the excessive interference. In yet another implementation, the network device alerts a user in response to a detection of the excessive interference.