Dual Mode Receiver Interference Mitigation via Signal Erasure
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Dual mode devices face interference issues due to unscheduled service transmissions, which can cause performance degradation in scheduled service receivers, leading to resource wastage and increased packet error rates, especially when unscheduled service transmissions overlap with scheduled service bands.
Innovation Solution
The proposed solution involves determining if an unscheduled service transmission frequency is within a predefined range and if its power is below a threshold, and then either erasing the baseband signal or stopping the channel estimation process when the unscheduled service transmission is active, or initiating a smart channel information report to mitigate interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If unscheduled service transmission is performed in a dual mode device, then communication flexibility and service availability are improved, but interference to scheduled service receivers increases causing performance degradation and packet errors
Solution Approach 1:
The system performs preliminary detection of unscheduled service transmission status before scheduled service reception. The receiver determines whether an unscheduled service transmission is ongoing by checking frequency range and power threshold conditions, and proactively applies interference mitigation measures (erasing baseband signal or stopping channel estimation) before the interference degrades the scheduled service reception quality
Solution Approach 2:
The patent introduces an intermediary detection and control mechanism that monitors unscheduled service transmission parameters (frequency and power) and mediates between the unscheduled transmission function and scheduled reception function. Based on the detected conditions, the intermediary triggers appropriate mitigation actions to protect the scheduled service while allowing unscheduled service flexibility
2Reliability
If interference mitigation measures are applied to protect scheduled service reception, then packet error rates are reduced, but processing complexity and resource consumption increase
Solution Approach 1:
The system applies partial interference mitigation by selectively erasing only the baseband signal or stopping only the channel estimation process during unscheduled service transmission, rather than disabling the entire scheduled service reception. This partial action provides sufficient protection against interference while maintaining overall system operation and avoiding excessive processing complexity
Solution Approach 2:
The patent uses copying of channel information through smart channel information reports, where the receiver obtains channel state information from unscheduled service transmissions and uses this copied information to maintain scheduled service reception quality without directly processing the interfering signal, thereby reducing processing complexity
3Object-affected harmful factors
If baseband signal erasure and channel estimation stopping are performed during unscheduled service transmission, then interference impact is minimized, but data transmission continuity is affected
Solution Approach 1:
The system implements periodic monitoring of unscheduled service transmission status by continuously detecting frequency range and power threshold conditions. This periodic detection allows the receiver to dynamically switch between normal reception mode and interference mitigation mode, minimizing the duration of signal erasure while maintaining protection against interference
Solution Approach 2:
The patent employs feedback mechanisms where the receiver monitors the ongoing unscheduled service transmission conditions and provides feedback to adjust the interference mitigation strategy. Based on the detected frequency and power conditions, the system dynamically determines whether to erase baseband signal or stop channel estimation, optimizing the balance between interference protection and transmission continuity
Data Source
AI summary
An apparatus and method for interference mitigation comprising determining if an unscheduled service transmission frequency is in a predefined frequency range; determining if an unscheduled service transmission power is less than a predefined power threshold; and performing one or both of the following: a) erase the baseband signal when an unscheduled service transmission is ON and stop the channel estimation process when the unscheduled service transmission is ON; b) initiate a smart channel information report.