Selective Muting of Reference Signal Resource Elements for 5G Positioning
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Solution Overview
Problem
Current 5G wireless communication systems face challenges in efficiently managing positioning reference signals, particularly in reducing interference and enhancing orthogonality, which affects the accuracy and reliability of mobile device location determination.
Innovation Solution
Implementing a resource-based muting technique that allows specific resource elements of reference signals to be transmitted unmuted despite a muting pattern, improving orthogonality and maintaining essential signal content for user equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a muting pattern is applied to reference signal transmission, then interference between different reference signals is reduced, but signal availability and positioning accuracy deteriorate
Solution Approach 1:
The patent applies different muting configurations to different resource elements within the same reference signal. Specifically, certain resource elements are configured with muting patterns while others are exempted, allowing localized interference reduction without completely muting the reference signal. This selective approach maintains signal availability while reducing harmful interference in specific regions.
Solution Approach 2:
The reference signal is segmented into multiple resource elements, and muting patterns are applied selectively to specific segments rather than the entire signal. This segmentation allows the system to mute only those resource elements that cause interference while preserving others that are critical for positioning accuracy, thus resolving the contradiction between interference reduction and signal availability.
2Stability of the object's composition
If a muting pattern is applied to reference signal transmission, then orthogonality between signals is enhanced, but positioning accuracy deteriorates due to reduced signal content
Solution Approach 1:
The patent implements local quality by applying muting patterns selectively to specific resource elements rather than uniformly across the entire reference signal. This allows orthogonality to be enhanced in specific regions where interference occurs, while preserving signal content in other regions that is essential for maintaining positioning accuracy.
Solution Approach 2:
The system dynamically adjusts muting configurations based on network conditions and signal requirements. By selectively muting only certain resource elements that cause orthogonality issues while preserving others, the system maintains dynamic adaptability that balances orthogonality enhancement with positioning accuracy requirements.
3Object-generated harmful factors
If all resource elements are muted according to the muting pattern, then interference is reduced, but essential signal content for positioning is lost
Solution Approach 1:
The patent extracts and exempts specific resource elements from the muting pattern that contain essential positioning information. By identifying and taking out these critical resource elements from the muting configuration, the system reduces interference on non-essential elements while preserving the signal content necessary for accurate positioning measurements.
Solution Approach 2:
Different muting configurations are applied to different resource elements based on their importance for positioning. Essential resource elements are configured with exemptions from muting, while non-essential elements are muted to reduce interference. This local differentiation prevents information loss while still achieving interference reduction.
Data Source
AI summary
A method of managing positioning reference signal transmission includes: instructing a transmission point to apply a muting pattern regarding transmission of a reference signal including first and second reference signal resources, where a first instance of the first reference signal resource includes one or more first resource elements across one or more first OFDM symbols within a slot, and a second instance of the second reference signal resource includes one or more second resource elements across one or more second OFDM symbols within the slot; and instructing the transmission point to transmit, unmuted, at least one of the one or more second resource elements, of at least one of the one or more second OFDM symbols, despite the muting pattern indicating to mute transmission of the at least one of the one or more second resource elements of the at least one of the one or more second OFDM symbols.