Full-Duplex Sidelink Synchronization via Frequency Segmentation
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G NR, face inefficiencies in spectral and time-domain usage due to half-duplex sidelink synchronization methods, which limit spectral efficiency and increase latency.
Innovation Solution
Implementing full-duplex sidelink synchronization techniques that allow UEs to monitor and transmit synchronization blocks simultaneously at specific frequency locations and occasions, enabling coexistence with half-duplex UEs and optimizing resource allocation for full-duplex operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If half-duplex sidelink synchronization methods are used, then device complexity is reduced, but spectral efficiency deteriorates
Solution Approach 1:
The patent implements dynamic full-duplex synchronization where UEs can simultaneously monitor and transmit SSBs at different frequency locations within the same occasion. This dynamic operation allows the system to transition from static half-duplex modes to flexible full-duplex modes, resolving the contradiction by enabling concurrent transmission and reception operations that improve spectral efficiency while maintaining manageable device complexity through standardized procedures
2Ease of operation
If half-duplex sidelink synchronization methods are used, then ease of operation is improved, but latency increases
Solution Approach 1:
The patent enables continuous synchronization operations by allowing UEs to monitor and transmit SSBs simultaneously in full-duplex mode. This eliminates the sequential waiting periods inherent in half-duplex operations, maintaining continuous synchronization activities that reduce latency while preserving operational simplicity through standardized full-duplex procedures
3Loss of energy
If full-duplex sidelink synchronization is implemented, then spectral efficiency is improved, but device complexity increases
Solution Approach 1:
The patent segments the synchronization operation into distinct frequency locations within the same time occasion, allowing simultaneous monitor and transmit operations at different frequencies. This segmentation enables full-duplex functionality by separating receive and transmit operations in the frequency domain, improving spectral efficiency while managing device complexity through structured frequency resource allocation
Solution Approach 2:
The patent introduces frequency location as an intermediary dimension that mediates between simultaneous monitor and transmit operations. By using different frequency locations for monitoring and transmitting SSBs within the same occasion, the system enables full-duplex operation without requiring complex self-interference cancellation, thus improving spectral efficiency while keeping device complexity manageable
4Productivity
If full-duplex sidelink synchronization is implemented, then data rate is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic full-duplex synchronization operations that enable concurrent data transmission and reception through simultaneous SSB monitoring and transmitting at different frequency locations. This dynamic capability increases data rate by utilizing both transmit and receive channels simultaneously while managing device complexity through standardized full-duplex procedures and frequency resource allocation
Data Source
AI summary
Certain aspects of the present disclosure provide techniques for full-duplex sidelink synchronization. A method that may be performed by a user equipment (UE) includes monitoring for a first synchronization block (SSB) at a first frequency location and at a first occasion within a period and transmitting a second SSB at a second frequency location and at the first occasion within the period.