Wireless Node Signaling for Flexible Random Access Switching
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently switching between 2-step and 4-step random access procedures due to excessive signaling overhead, limiting adaptability to diverse application scenarios.
Innovation Solution
A method that reinterprets existing signaling to determine the format of MsgB for 2-step random access and Msg2 for 4-step random access, allowing flexible shifting between the two procedures without additional signaling overhead, by using characteristic sequences and information blocks to identify time-frequency resources and modulation schemes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional signaling methods are used to indicate MsgB and Msg2 formats, then signaling overhead increases, but switching between 2-step and 4-step random access becomes less flexible
Solution Approach 1:
The patent applies universality by making the first information block serve multiple functions: it indicates both the format of the second radio signal (MsgB or Msg2) and carries information blocks corresponding to characteristic sequences. This multi-functional design eliminates the need for separate signaling messages, thereby reducing signaling overhead while maintaining flexible switching capability between 2-step and 4-step random access procedures
Solution Approach 2:
The patent merges the format indication function with the information block transmission function into a single first information block. By combining these functions, the patent eliminates redundant signaling and achieves efficient indication of random access procedure types without increasing overall signaling load
2Adaptability or versatility
If separate signaling is introduced to indicate random access procedure format, then adaptability improves, but device complexity increases
Solution Approach 1:
The first information block is designed as a universal structure that can indicate different random access procedure formats (2-step or 4-step) while simultaneously carrying sequence-specific information blocks. This universal design allows the same signaling structure to handle multiple scenarios without increasing processing complexity
Solution Approach 2:
The patent uses parameter changes within the existing information block structure to indicate different procedure formats. By modifying parameters within the first information block rather than introducing new signaling structures, the patent maintains adaptability while avoiding increased device complexity
Data Source
AI summary
The present disclosure provides a method and device used in node for wireless communication. A first node transmits a first sequence and a first radio signal; receives a first signaling; and receives a second radio signal; the second radio signal carries a first information block and a second information block, the first information block being used to determine X characteristic sequence(s), X being a positive integer; the second information block comprises X second-type information sub-block(s), and the X second-type information sub-block(s) corresponds(correspond) to the X characteristic sequence(s) respectively. By interpreting the existing signaling in a new way, the method provided in the present disclosure prevents unnecessary signaling overhead and meanwhile supports a flexible switch between 2-step random access and 4-step random access.