Synchronization Signal Block Decoding via Frame-Dependent Resource Allocation
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Solution Overview
Problem
Wireless communication networks face challenges in managing interference and decoding performance when transmitting synchronization signal blocks at narrow bandwidths, particularly in scenarios like coexistence with earlier systems where redesigning the signal structure is undesirable.
Innovation Solution
The solution involves an apparatus with a processor and memory configured to allocate data to resource elements of a synchronization signal block based on the frame number, puncturing resource elements at the block's edges, and using scrambling and resource allocation schemes to enhance interference management and decoding efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If resource elements are punctured at the edges of the synchronization signal block to enable narrow bandwidth operation, then the system can operate at narrow bandwidth, but decoding performance deteriorates
Solution Approach 1:
The patent changes the parameter of resource element allocation by making it frame number dependent. Different frame numbers map data to different resource element patterns, ensuring that punctured edges affect different portions of data across frames. This parameter variation maintains decoding performance while enabling narrow bandwidth operation through selective puncturing.
Solution Approach 2:
The resource element allocation is made dynamic rather than static. The allocation pattern changes based on the frame number, creating a dynamic mapping that adapts to the puncturing pattern. This dynamic allocation ensures that important data is not consistently located at punctured edge positions, thereby maintaining decoding reliability while supporting narrow bandwidth operation.
2Device complexity
If data is allocated to resource elements in a fixed pattern, then the allocation is simple, but interference management is poor
Solution Approach 1:
The patent introduces frame number as a parameter that changes the resource element allocation pattern. This parameter-based allocation creates diversity in resource usage across different frames, which helps spread interference and improve interference management. The complexity increases only slightly by incorporating the frame number into the allocation logic.
Data Source
AI summary
Various example embodiments may relate to punctured transmission of data within synchronization signal blocks. An apparatus may obtain data for transmission on a data channel of a synchronization signal block of a transmission frame and allocate the data to resource elements of the data channel. The allocation of the data may be dependent on the frame number of the transmission frame. The apparatus may further puncture one or more resource elements at edge(s) of the synchronization signal block and transmit the synchronization signal block. Another apparatus may receive the synchronization signal block and decode the data. Apparatuses, methods, and computer programs are disclosed.