SRS Positioning Guard Periods in Aggregated Component Carriers
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Solution Overview
Problem
Interference management is required in RF tuning based on bandwidth aggregation for accurate positioning in 3GPP LTE and NR systems, particularly in scenarios involving bandwidth aggregation.
Innovation Solution
Implementing guard zones to minimize interference in wireless communication systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If bandwidth aggregation is used for accurate positioning, then positioning accuracy is improved, but interference increases
Solution Approach 1:
The patent divides the frequency spectrum into multiple component carriers (CCs) for bandwidth aggregation, with each CC being independently configurable with guard bands. This segmentation allows the system to achieve wide bandwidth for accurate positioning while managing interference through individual carrier protection mechanisms.
Solution Approach 2:
The patent applies guard bands locally at the edges of each component carrier to suppress interference. Instead of applying a uniform approach across the entire aggregated bandwidth, guard bands are selectively placed at specific locations (edges of each CC) where interference is most likely to occur, optimizing the balance between bandwidth utilization and interference management.
2Object-affected harmful factors
If guard zones are set to minimize interference, then interference is reduced, but bandwidth utilization decreases
Solution Approach 1:
The patent segments the total bandwidth into multiple component carriers, allowing guard bands to be distributed across different segments rather than requiring a single large guard band. This enables more efficient use of the total available bandwidth while still providing interference protection where needed.
Solution Approach 2:
The patent allows flexible configuration of guard band parameters (width, position, presence) for each component carrier based on actual interference conditions. This adaptive approach optimizes the balance between interference suppression and bandwidth utilization by adjusting guard band characteristics rather than using fixed, conservative values.
Data Source
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AI summary
One disclosure of the present specification provides a method by which a UE communicates. The method comprises the steps of: transmitting an uplink signal from a data resource to a base station; and transmitting, from a sound reference signal (SRS) resource to the base station, a SRS for positioning, wherein the SRS resource includes a first resource configured as a first component carrier (CC), and a second resource configured as a second CC, the first resource is connected for bandwidth aggregation to the second resource, and the UE skips the transmitting of the uplink signal in the guard period.