Multi-Transceiver Interference Mitigation via Dynamic Control
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Solution Overview
Problem
Existing communications apparatuses face interference issues when simultaneously operating multiple cellular system radio transceivers in different networks, particularly due to the lack of guard bands between frequency bands, leading to undesired interference between transceivers.
Innovation Solution
A control entity is implemented to collect radio activity information, determine interference occurrences, and control either the aggressor or victim transceiver by adjusting transmission power, skipping or discarding transmission opportunities, or reselecting frequencies to mitigate interference, ensuring seamless operation across multiple cellular networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple cellular system radio transceivers operate simultaneously in different networks, then communication versatility and service capability are improved, but interference between transceivers occurs due to lack of guard bands between frequency bands
Solution Approach 1:
The control entity proactively monitors radio activity information and predicts potential interference scenarios before they occur. When interference is anticipated between an aggressor transceiver and a victim transceiver, the control entity preemptively adjusts transmission parameters or coordinates timing to prevent the interference from degrading communication quality, thereby maintaining versatile multi-network operation without harmful interference effects
2Reliability
If transmission power is increased to improve communication reliability, then signal strength is improved, but interference to other transceivers increases
Solution Approach 1:
The control entity dynamically adjusts the transmission power of aggressor transceivers based on real-time radio activity information and interference conditions. When a victim transceiver is actively receiving, the control entity reduces the aggressor's transmission power to minimize interference. This dynamic power control ensures that communication reliability is maintained when needed while preventing excessive interference generation, resolving the contradiction between reliable communication and interference reduction
3Productivity
If transmission opportunities are increased to improve data throughput, then productivity is improved, but interference occurrences increase
Solution Approach 1:
The control entity implements periodic monitoring of radio activity information and coordinates transmission opportunities for multiple transceivers in a time-division manner. By periodically assessing the radio environment and scheduling transmissions to avoid simultaneous aggressive transmissions that would cause interference, the system maintains high data throughput while minimizing interference occurrences through structured periodic coordination
Data Source
AI summary
A communications apparatus includes at least two cellular system radio transceivers capable of simultaneously performing transmitting/receiving radio activities in two cellular networks and a control entity. The control entity is coupled to the cellular system radio transceivers, collects radio activity information of the cellular system radio transceivers, determines whether interference will occur or is occurring and which cellular system radio transceiver is an aggressor transceiver and which cellular system radio transceiver is a victim transceiver when the interference occurs according to the radio activity information, and further determines control information according to the radio activity information for controlling the aggressor transceiver or the victim transceiver to mitigate the interference. The aggressor transceiver is the cellular system radio transceiver having the transmitting radio activity that will interfere or interferes with the receiving radio activity of the victim transceiver.