Synchronization Signal Block Allocation for Narrowband Decoding
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently transmitting and decoding synchronization signal blocks (SSBs) at narrower bandwidths than originally designed, leading to information loss and decoding difficulties due to puncturing of resource elements.
Innovation Solution
A predetermined allocation scheme is employed to allocate a first portion of data to resource elements outside a predetermined set and a second portion to elements within the set, with puncturing only occurring in the predetermined set, ensuring efficient transmission and decoding of SSB data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If resource elements are punctured to achieve narrowband operation, then bandwidth requirements are reduced, but information loss and decoding difficulties occur
Solution Approach 1:
The patent applies preliminary action by performing rate matching and data allocation before puncturing occurs. The transmitter pre-allocates data to resource elements, ensuring that critical data portions are placed in non-punctured resources. The receiver performs corresponding de-allocation and rate matching operations before decoding, preparing the data structure in advance to handle the punctured transmission effectively.
2Reliability
If a predetermined allocation scheme is used to minimize puncturing impacts, then data transmission reliability is improved, but system complexity increases
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the allocation of data portions to different resource element sets based on the puncturing pattern. The system changes the mapping parameters of data to resource elements, using different allocation schemes for different portions of data. This allows the system to adapt to the punctured transmission pattern while maintaining reliable decoding through standardized processing operations.
Data Source
AI summary
A method including providing data for transmission on a data channel of a synchronization signal block of a transmission frame; identifying a first portion of the data and a second portion of the data, wherein the second portion of the data repeats at least part of the first portion of the data. The data may be allocated to resource elements of the data channel according to a predetermined allocation scheme, wherein at least part of the first portion of the data is allocated to resource elements outside of a predetermined set and at least part of the second portion of the data is allocated to resource elements of the predetermined set. At least part of the one or more resource elements of the predetermined set may be punctured. A portion of the data on the data channel may be transmitted using available resource elements after the puncturing.