Sidelink Resource Segmentation With Time-Domain Bridges
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Solution Overview
Problem
In wireless communication, sidelink transmissions such as sidelink positioning reference signals often collide with other transmissions, leading to degradation and failure of both positioning and data transfer due to limited bandwidth and high accuracy requirements.
Innovation Solution
A modular approach is adopted where sidelink transmissions are divided into multiple segments across different time slots and frequency sub-bands, interconnected by time-domain 'bridges' to maintain phase continuity and avoid collisions, allowing for simultaneous transmission of sidelink positioning reference signals and other data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sidelink transmissions are transmitted using limited bandwidth resources, then transmission capacity is constrained, but transmission reliability deteriorates due to collisions with other transmissions
Solution Approach 1:
The patent divides the sidelink transmission into multiple segments in the frequency domain and multiple bridges in the time domain. Each segment occupies different frequency resources, and bridges connect these segments across time slots. This segmentation allows the transmission to utilize scattered bandwidth resources efficiently while reducing collisions, thereby improving reliability without sacrificing transmission capacity.
2Measurement precision
If sidelink positioning reference signals are transmitted with high accuracy requirements, then positioning precision is improved, but collision probability increases leading to transmission failure
Solution Approach 1:
The positioning reference signal transmission is segmented into multiple frequency-domain segments connected by time-domain bridges. This allows the signal to maintain high accuracy requirements through proper phase continuity preservation across bridges while distributing transmission across multiple resources, thereby reducing collision probability and improving overall transmission success rate.
Solution Approach 2:
The bridges act as intermediary elements that connect frequency-domain segments. These bridges preserve phase continuity information and enable the receiver to reconstruct the complete positioning reference signal from scattered segments, maintaining positioning precision while allowing flexible resource allocation that avoids collisions.
3Object-affected harmful factors
If bandwidth resources are scattered to avoid collisions, then interference is reduced, but maintaining phase continuity becomes more difficult
Solution Approach 1:
Bridges are introduced as intermediary time-domain elements that connect frequency-domain segments. These bridges carry phase continuity information that enables the receiver to correctly reconstruct the positioning reference signal even when segments are scattered in frequency and separated in time, thereby reducing interference while managing phase continuity complexity through structured design.
Solution Approach 2:
The patent performs preliminary actions by carefully designing the bridge structures and their timing relationships before transmission. The phase continuity requirements are pre-planned and embedded in the bridge design, allowing the system to scatter segments for interference reduction while automatically maintaining phase continuity through the pre-configured bridge connections.
Data Source
AI summary
Disclosed is a method comprising transmitting information indicating radio resources of a sidelink transmission divided into a plurality of first segments in a plurality of time slots, wherein the plurality of first segments partially overlap in frequency domain, and wherein the plurality of first segments are inter-connected in time domain by at least one second segment comprising one or more radio resources for combining the plurality of first segments.