Synchronization Signal Block Resource Indication for 5G Access
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Solution Overview
Problem
In 5G NR systems, terminal devices face increased complexity, power consumption, and access delay due to the need to blindly detect synchronization signal blocks when no remaining minimum system information (RMSI) is present, as they lack resource information for other SS blocks.
Innovation Solution
The method involves a network device sending a synchronization signal block with PBCH information indicating the absence of RMSI, which includes resource information for a second synchronization signal block, allowing the terminal device to obtain this information and reduce detection complexity by specifying the resource location of the second SS block.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the terminal device receives indication information that the SS block is not associated with RMSI, then the terminal device knows RMSI is not present, but the terminal device must blindly detect other SS blocks to obtain RMSI, increasing complexity of SS block detection
Solution Approach 1:
The patent applies preliminary action by having the network device pre-configure and indicate the association relationship between SS blocks and RMSI through higher-layer signaling (e.g., RRC signaling). This allows the terminal device to obtain RMSI resource information in advance without needing to blindly detect multiple SS blocks, thus reducing detection complexity while maintaining complete information availability.
2Reliability
If the terminal device blindly detects other SS blocks to obtain RMSI, then the terminal device may find RMSI, but this increases power consumption and access delay
Solution Approach 1:
The network device performs preliminary action by indicating through higher-layer signaling which SS blocks are associated with RMSI and providing the corresponding resource information. This allows the terminal device to directly access RMSI without power-consuming blind detection, significantly reducing power consumption while ensuring reliable RMSI acquisition.
3Reliability
If the terminal device blindly detects other SS blocks to obtain RMSI, then the terminal device may find RMSI, but this increases access delay
Solution Approach 1:
The patent applies preliminary action by having the network device provide SS block-RMSI association information through higher-layer signaling before the terminal device needs to access RMSI. This eliminates time-consuming blind detection processes, significantly reducing network access delay while maintaining reliable RMSI acquisition through the pre-configured association relationship.
Data Source
AI summary
Provided are an information transmission method and device. The method includes: receiving, by a terminal device, a first synchronization signal block sent by a network device; and obtaining, by the terminal device, resource information of a second synchronization signal block based on the second information if the first information indicates that RMSI is not present, where the first synchronization signal block comprises a first physical broadcast channel (PBCH), and information carried on the first PBCH comprises first information and second information. The first information is used for indicating whether remaining minimum system information (RMSI) is present, and when the first information indicates that RMSI is not present, the second information is used for indicating resource information of a second synchronization signal block.