Network Device SSB Frequency Indication for UE Search
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Solution Overview
Problem
The initial search process for User Equipment (UE) to access a network device is time-consuming due to unnecessary searches in frequency domains where SSBs do not exist, leading to increased power consumption and delayed access.
Innovation Solution
A network device indicates the frequency domain position of an SSB associated with RMSI to the UE, avoiding useless searches in domains without SSBs, thereby speeding up the initial search process and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the user equipment performs a comprehensive search across the entire frequency domain range to ensure finding all SSBs, then the reliability of initial access is improved, but the time required for the initial search process increases
Solution Approach 1:
The network device performs preliminary action by indicating the frequency domain position of SSB to the UE before the UE starts its search process. This advance information allows the UE to skip unnecessary search operations in frequency domains where SSB does not exist, thereby reducing initial search time while maintaining access reliability.
2Reliability
If the user equipment searches across the entire frequency domain range to ensure finding SSBs, then the completeness of SSB detection is improved, but the power consumption during the initial search process increases
Solution Approach 1:
The network device provides advance information about the frequency domain position of SSB to the UE before the search begins. This preliminary action enables the UE to limit its search to only those frequency domains where SSB actually exists, significantly reducing power consumption while ensuring complete SSB detection.
3Adaptability or versatility
If the user equipment performs a wide frequency domain search to accommodate different operators' SSB positions, then the adaptability to different operators is improved, but the initial search time increases
Solution Approach 1:
The network device indicates the specific frequency domain position of SSB to the UE in advance. This preliminary action enables the UE to adapt to different operators' frequency allocations without performing time-consuming wide searches, as the UE can directly jump to the indicated frequency position for each operator.
4Loss of time
If the user equipment reduces the frequency domain search range to speed up initial access, then the initial search time is reduced, but the risk of missing SSBs increases
Solution Approach 1:
The network device provides advance indication of the frequency domain position of SSB to the UE. This preliminary action allows the UE to safely reduce its search range to only the indicated frequency domains without risking missed detections, as the network has already confirmed SSB presence at those positions.
Data Source
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AI summary
Provided in an embodiment of the present application are an indication method, a detection method, and a related device. In the present application, a network device prevents a user equipment from performing a useless search in a frequency domain range in which a synchronization signal block (SSB) does not exist by means of indicating to the user equipment a frequency domain position of the SSB in a certain frequency domain range of the user equipment, thereby accelerating an initial search process of the user equipment, which then reduces power consumption during the initial search process and helps the user equipment to search for SSBs in different frequency domains across different operators.