Sidelink Transmission Segmentation for Mixed-Numerology Alignment
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Solution Overview
Problem
Concurrent transmissions using different numerologies in wireless communications systems can cause alignment issues, leading to loss of phase continuity and reduced data throughput due to the need to shorten longer transmissions to align with shorter transmissions, resulting in inefficient use of the transmission medium.
Innovation Solution
Methods for segmenting longer transmissions on a first component carrier to align in time with shorter transmissions on a second component carrier, regardless of same or different numerologies, maintaining phase continuity and transmission coherency across component carriers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If shorter transmissions are used to align with longer transmissions in time, then transmission alignment is achieved, but data throughput is reduced due to truncating the longer transmission
Solution Approach 1:
The patent segments the longer transmission into multiple segments that can be transmitted concurrently with the shorter transmission on different component carriers. This allows the longer transmission to maintain its full data throughput while achieving time alignment through parallel transmission segments, resolving the contradiction between maintaining alignment and preserving throughput.
2Stability of the object's composition
If longer transmissions are truncated to align with shorter transmissions, then phase continuity is maintained, but use of the transmission medium becomes inefficient
Solution Approach 1:
By segmenting the longer transmission and transmitting it in parallel across multiple component carriers, the patent maintains phase continuity within each segment while utilizing the full transmission medium capacity. This eliminates the waste associated with truncating transmissions while preserving the stability of phase continuity through coordinated segment transmission.
3Adaptability or versatility
If concurrent transmissions use different numerologies, then transmission flexibility is improved, but alignment issues occur leading to reduced performance
Solution Approach 1:
The patent segments transmissions on component carriers with different numerologies into aligned time segments, allowing each segment to maintain its native numerology flexibility while achieving synchronization at the segment level. This enables concurrent transmissions with different numerologies to coexist without alignment issues, preserving both flexibility and throughput.
Solution Approach 2:
The patent resolves alignment issues by transitioning from time-domain alignment to a multi-dimensional approach where transmissions are aligned across frequency (component carriers) and segment boundaries. This allows different numerologies to operate independently in their respective frequency segments while maintaining overall system coordination, preserving flexibility without sacrificing productivity.
Data Source
AI summary
Certain aspects of the present disclosure provide techniques for wireless communications by a user equipment (UE). In one aspect, a method includes determining that (1) a first scheduled sidelink transmission to a first receiving UE using a first set of component carriers and (2) a second scheduled sidelink transmission to a second receiving UE using a second set of component carriers will overlap in a time domain; determining that the first scheduled sidelink transmission has a first transmission time length and the second scheduled sidelink transmission has a second transmission time length, wherein the second transmission time length is shorter than the first transmission time length; segmenting the first scheduled sidelink transmission into a plurality of first sidelink transmission segments; and sending, to the first receiving UE, an indication of the plurality of first sidelink transmission segments.