Sidelink Synchronization Signal Detection via Parallel Buffer Segmentation
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Solution Overview
Problem
In wireless communication systems, particularly in sidelink communication systems for device-to-device (D2D) and vehicle-to-everything (V2X) communications, existing methods are inefficient in detecting synchronization signals due to sequential detection processes, leading to increased cell search time and system load.
Innovation Solution
A method and apparatus that divide the cell search period into partial detection ranges, allowing for parallel detection of primary and secondary sidelink synchronization signals using multiple buffers, reducing redundant calculations and system load by bypassing secondary synchronization signal detection for candidate paths with existing correlation results.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sequential detection process is used for primary and secondary sidelink synchronization signals, then detection accuracy is maintained, but cell search time and system load increase
Solution Approach 1:
The patent divides the cell search period into multiple partial detection ranges and uses multiple buffers to store signals from different ranges. This allows parallel processing of primary and secondary synchronization signal detection, reducing cell search time while maintaining detection accuracy through segmented analysis of synchronization signals
2Device complexity
If sequential detection process is used for primary and secondary sidelink synchronization signals, then system load is manageable, but productivity and detection efficiency decrease
Solution Approach 1:
By segmenting the detection process into parallel operations across multiple buffers and partial detection ranges, the system achieves higher detection efficiency without proportionally increasing complexity. The parallel processing architecture allows simultaneous detection of primary and secondary signals while managing system load through structured buffer management
Solution Approach 2:
The patent performs preliminary correlation detection on primary synchronization signals before proceeding to secondary signal detection. Candidate paths are identified in advance through preliminary correlation results, allowing the system to focus subsequent detection efforts on promising candidates and bypass unnecessary processing, thereby improving overall detection efficiency
Data Source
AI summary
An operation method of an electronic device including: dividing a cell search period into a plurality of partial detection ranges based on the number of partial buffers and a size of the partial buffer; obtaining a first correlation detection information based on a first synchronization signal, while temporarily storing first signals in a first partial buffer among the partial buffers, in which the first signals are received during a first partial detection range among the plurality of partial detection ranges; and obtaining a second correlation detection information for the first signals based on the first correlation detection information and a second synchronization signal, during a second partial detection range among the plurality of partial detection ranges and obtaining the first correlation detection information for second signals based on the first synchronization signal, while temporarily storing the second signals received during the second partial detection range in a second partial buffer.