Preamble Sequence Mapping With Multi-RO Access for URAT Decoding
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Solution Overview
Problem
The performance of preamble sequences in uncoordinated random access and transmission (URAT) technology is affected by the decoding of physical uplink shared channels (PUSCH), necessitating improvements to enhance the accuracy and efficiency of preamble sequences.
Innovation Solution
A method and apparatus for determining multiple random access channel occasions (ROs) based on detected synchronization signal blocks (SSBs), where preamble sequences carry additional bits generated based on information bits, optimizing the mapping and selection of ROs to improve preamble sequence performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If uncoordinated random access and transmission (URAT) technology is used to support a massive number of terminals, then the number of connected devices can be increased, but the coordination resources of the network become limited and the preamble sequence performance deteriorates
Solution Approach 1:
The preamble sequence is segmented into multiple parts: original bits and additional bits. The additional bits are generated by segmenting and recombining the original information bits through specific bit position operations. This segmentation allows the preamble to carry more information while maintaining compatibility with existing decoding processes, thereby supporting more terminals without sacrificing performance.
Solution Approach 2:
The invention changes the parameter structure of the preamble sequence by adding additional bits generated from information bits. This parameter modification increases the information capacity of the preamble while maintaining the original sequence structure, allowing the system to support a massive number of terminals in URAT mode without degrading preamble performance.
2Adaptability or versatility
If the preamble sequence is required to carry data information related to PUSCH, then the access and transmission processes can be combined, but the decoding accuracy of the preamble sequence deteriorates
Solution Approach 1:
The additional bits are pre-generated from the information bits before the actual transmission. This preliminary processing of bit segmentation and recombination ensures that the extra information can be accommodated without interfering with the standard decoding process, thereby maintaining decoding accuracy while enabling integrated access and transmission.
Solution Approach 2:
The additional bits act as an intermediary carrier that conveys PUSCH-related information without directly interfering with the original preamble structure. This intermediary approach allows the preamble to carry both access information and data information while maintaining decodability through standard procedures.
3Reliability
If multiple random access channel occasions are determined based on detected synchronization signal blocks, then the preamble sequence performance can be improved, but the complexity of RO selection increases
Solution Approach 1:
Instead of uniformly processing all synchronization signal blocks, the invention selectively determines multiple random access channel occasions based on specific detected SSBs. This localized approach focuses computational resources on relevant SSBs, improving preamble performance while avoiding the complexity of processing all possible SSBs uniformly.
Data Source
AI summary
The present disclosure provides preamble sequence sending and receiving methods and apparatuses and a storage medium. The method includes: determining M random access channel occasions (ROs) based on detected synchronization signal blocks (SSBs), where M is an integer greater than 1; and sending preamble sequences on the M ROs, where the preamble sequences carry additional bits generated based on informational bits, thereby improving the performance of preamble sequences.