Selective Satellite Signal Measurement Under Transmit Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge in wireless communication systems, particularly in 5G networks, is the interference caused by outbound signals that affect the measurement of satellite signals, leading to reduced positioning and time determination accuracy.
Innovation Solution
A device is configured to transmit outbound signals while inhibiting the processing of interference-causing frequency portions of satellite signals, either by attenuating or blanking these portions, allowing for accurate measurement of non-interfered frequency portions to determine arrival times and locations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the device transmits outbound signals, then communication functionality is improved, but interference with satellite signal measurement increases
Solution Approach 1:
The patent divides the satellite signal into multiple frequency portions and processes them independently. The processor identifies which frequency portions contain interference and selectively processes only the clean portions, enabling the device to maintain communication functionality while preserving measurement accuracy through frequency-domain segmentation.
Solution Approach 2:
The patent applies different processing qualities to different frequency portions of the satellite signal. Instead of uniformly processing the entire signal, the system selectively attenuates or blanking specific frequency portions that contain interference, while preserving and processing other frequency portions that remain clean, thus achieving local optimization of signal quality.
2Adaptability or versatility
If frequency portions with interference are processed, then measurement coverage is improved, but measurement accuracy deteriorates
Solution Approach 1:
The patent extracts and removes the harmful interference components from the satellite signal by identifying frequency portions containing interference and selectively attenuating or blanking them. This extraction of harmful elements allows the system to maintain measurement coverage through remaining frequency portions while ensuring high measurement accuracy by eliminating corrupt data.
Solution Approach 2:
The patent converts the harmful interference pattern into a useful filtering criterion. By analyzing which frequency portions contain interference, the system learns to selectively process only the clean portions, transforming the interference problem into a guide for improving signal selection and enhancing overall measurement quality.
3Reliability
If selective frequency filtering is applied, then interference rejection is improved, but signal processing complexity increases
Solution Approach 1:
The patent performs preliminary analysis of the satellite signal to identify frequency portions that will contain interference before processing begins. By anticipating which frequency portions are problematic and pre-planning selective attenuation or blanking, the system reduces real-time processing complexity while maintaining high interference rejection capability.
Solution Approach 2:
The system uses its own outbound signal transmission characteristics to identify and filter interference in the satellite signal. The device leverages knowledge about its own transmissions to automatically determine which frequency portions need filtering, eliminating the need for external interference detection systems and simplifying the overall processing architecture.
Data Source
AI summary
An apparatus includes: a transceiver configured to receive a satellite signal and to transmit one or more outbound signals; a memory; and a processor, communicatively coupled to the transceiver and the memory, configured to: transmit, via the transceiver, the one or more outbound signals; blank a first portion of the satellite signal spanning a first frequency set that includes at least a portion of an interference signal corresponding to transmission of the one or more outbound signals by the transceiver; and process a second portion of the satellite signal spanning a second frequency set that includes no frequencies of the interference signal; wherein the first frequency set and the second frequency set are different frequency portions of a same time portion of the satellite signal.