Synchronization Raster Indicator for Wireless System Information
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In the next generation 5G wireless communication system, the existing methods for receiving system information are inefficient as they require transmitting system information on all synchronization signal blocks, leading to increased overhead and difficulty for User Equipment (UE) to quickly scan and obtain necessary system information for communication.
Innovation Solution
A method and apparatus for a UE to detect the presence or absence of system information within a synchronization raster by using a system information indicator, allowing it to determine a second synchronization raster if system information is not found in the first raster, and receive system information from a third synchronization signal block not included in the first and second rasters, thereby reducing unnecessary scanning and overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If system information is transmitted on all synchronization signal blocks, then system information coverage is improved, but overhead increases and UE scanning efficiency deteriorates
Solution Approach 1:
The patent divides the frequency spectrum into multiple synchronization rasters, with each raster containing synchronization signal blocks. System information is selectively transmitted only in specific rasters that have corresponding synchronization signal blocks, rather than transmitting on all possible blocks. This segmentation allows the system to maintain comprehensive coverage across multiple rasters while reducing the total amount of transmitted system information.
Solution Approach 2:
The patent extracts and identifies which specific synchronization rasters contain synchronization signal blocks that require system information transmission. By using indicators in the synchronization signal blocks to mark the presence or absence of system information, the system extracts only the necessary information transmission instances, eliminating redundant transmissions and reducing overhead.
2Reliability
If system information is transmitted on all synchronization signal blocks, then system information coverage is improved, but UE scanning speed deteriorates
Solution Approach 1:
The patent implements preliminary action by including indicators within the synchronization signal blocks that pre-mark whether system information is present in corresponding rasters. This allows User Equipment to quickly scan through multiple rasters and immediately identify which ones contain system information, eliminating the need to fully process every single synchronization signal block and significantly improving scanning speed.
3Loss of energy
If system information indicator is used to determine raster presence, then overhead is reduced, but device complexity increases
Solution Approach 1:
The patent changes the parameter representation by using compact indicators within synchronization signal blocks to convey system information presence/absence. These indicators encode the necessary information in a space-efficient manner, allowing User Equipment to determine whether to proceed with system information reception based on simple parameter checks rather than processing entire message structures, thus reducing overhead while maintaining manageable complexity.
Data Source
AI summary
The present invention discloses a method for a user equipment to receive system information in a wireless communication system. Particularly, the method is characterized in detecting a first synchronization signal block configured with a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS) and a Physical Broadcasting Channel (PBCH) at a specific frequency position, determining a presence or non-presence of system information corresponding to the first synchronization signal block within a first synchronization raster corresponding to a specific frequency position based on a system information indicator included in the PBCH, and if the system information corresponding to the first synchronization signal block is determined as not existing, determining a second synchronization raster having system information exist therein based on the system information indicator.