Synchronization Block Reception Timing in 5G Cell Handovers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In 5G communication systems, user equipment faces challenges in quickly determining the time to receive synchronization blocks from adjacent cells, leading to delays and potential failures during handovers, especially during high-speed movements, due to the need to parse system information from each cell.
Innovation Solution
A method and apparatus that determine whether adjacent cells belong to a synchronous system based on indication information, allowing synchronization blocks to be received at the same time as the primary cell, without parsing system information from the second cell, thereby enabling quicker acquisition of synchronization information for seamless handovers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If user equipment parses system information from each adjacent cell to determine synchronization block reception time, then the reception time can be accurately determined, but the handover process becomes delayed and more complex
Solution Approach 1:
The network side pre-configures synchronization block reception time information in system information of the source cell before handover occurs. This preliminary provision of timing information eliminates the need for the terminal to parse target cell system information during handover, thereby reducing handover delay while maintaining accurate synchronization block reception timing.
Solution Approach 2:
The source cell system information acts as an intermediary that carries synchronization block reception time information for adjacent cells. Instead of directly accessing target cell system information, the terminal obtains this critical timing data through the source cell's system information, simplifying the handover process and reducing complexity.
2Measurement precision
If user equipment parses system information from adjacent cells to determine synchronization block reception time, then accurate timing can be achieved, but the operation becomes more complex
Solution Approach 1:
The necessary synchronization timing information is prepared in advance by the network and included in the source cell system information. This preliminary action eliminates the need for complex real-time parsing operations during handover, making the terminal's operation simpler while maintaining timing accuracy.
Solution Approach 2:
The source cell system information serves as an intermediary that provides synchronization block reception time information for adjacent cells. This approach simplifies the terminal's operation by eliminating the need to directly access and parse target cell system information, thereby reducing operational complexity while maintaining accurate timing determination.
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
The present invention relates to a synchronized block receiving method and apparatus, and a system information transmission method and apparatus. The synchronized block receiving method comprises: receiving system information about a first cell where a synchronized block is located, wherein the system information includes indication information; determining, according to the indication information, whether the first cell and N second cells adjacent to the first cell belong to a synchronization system, wherein N is an integer greater than or equal to 1; and if same belong to the synchronization system, receiving synchronized blocks of the N second cells according to the time when a synchronized block of the first cell is received. According to the embodiments of the present disclosure, there is no need to parse system information about the second cell, and therefore, the time when the synchronized block of the second cell is received may be determined more rapidly, and the synchronized block is thus received more rapidly, and therefore, synchronization information in the synchronized block is acquired more rapidly, such that a user equipment is capable of quickly completing switching between cells.