5G NR Minimum SI Structure for SIB Access Authorization
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Solution Overview
Problem
Existing wireless communication systems, particularly in 5G NR, face inefficiencies in delivering and decoding system information blocks (SIBs), requiring UEs to decode large transport blocks to determine access authorization, which is resource-intensive and inefficient.
Innovation Solution
A method where a UE receives an indication of a first assignment of a first PDSCH via a PBCH, allowing it to obtain a first portion of a SIB, including access control information, to determine if it is permitted to access the network, thereby reducing the need for decoding large SIBs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UEs decode large transport blocks containing complete SIBs to determine access authorization, then access control information can be obtained, but resource consumption and decoding complexity increase significantly
Solution Approach 1:
The system segments SIB delivery into two parts: a first SIB (or first portion) containing access control information delivered via one transport block, and a second SIB (or second portion) containing additional system information delivered via another transport block. This allows UEs to decode only the first portion to determine access authorization, avoiding the need to decode complete large SIBs while ensuring reliable access control information delivery.
Solution Approach 2:
The patent extracts access control information from the complete SIB structure and delivers it separately in a first SIB or first portion of SIB. This extraction allows UEs to obtain essential access authorization information without processing the entire large SIB transport block, reducing decoding complexity and resource consumption while maintaining reliable access control.
2Reliability
If UEs decode complete large SIBs to check access permission, then accurate access control can be implemented, but time and computational resources are wasted
Solution Approach 1:
The SIB delivery is segmented such that access control information is placed in a first SIB or first portion that can be decoded independently and quickly. UEs can determine access authorization by decoding only this first portion, significantly reducing decoding time while maintaining accurate access control. The second SIB or second portion containing additional system information is only decoded if access is permitted.
3Loss of information
If complete SIBs are transmitted in single large transport blocks, then all system information is delivered, but network resource efficiency decreases
Solution Approach 1:
The system transmits SIB information segmented across multiple transport blocks: a first transport block carrying a first SIB or first portion with access control information, and a second transport block carrying a second SIB or second portion with additional system information. This segmentation improves network resource efficiency by allowing UEs to receive essential access control information in the first block without requiring complete SIBs, while still delivering all system information to authorized UEs through the second block.
Solution Approach 2:
The patent implements partial action by delivering only the essential first portion of SIB containing access control information in the first transport block. UEs can perform access authorization checks with this partial information, and only authorized UEs proceed to decode the second transport block for complete system information. This approach optimizes network resource efficiency by avoiding unnecessary transmission and decoding of complete large SIBs to all UEs.
Data Source
AI summary
A UE may receive an indication of a first assignment of a first PDSCH via a PBCH from a network entity. The first PDSCH may include at least a first portion of a SIB. The UE may receive the first portion of the SIB via the first PDSCH from the network entity based on the first assignment of the first PDSCH. The first portion of the SIB may include access control information for the network entity and the assignment for a second portion of the SIB. The UE may identify whether the UE is permitted to access the network entity based on the access control information for the network entity.