Synchronization Signal Burst Set Configuration via Location Indication
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Solution Overview
Problem
In next-generation communications systems, the inefficiency of downlink synchronization due to the need for multiple detections by user equipment (UE) to determine the cycle and time location of synchronization signal bursts in a radio frame, leading to low downlink measurement efficiency.
Innovation Solution
The transmission reception point sends configuration information including location and time cycle indication to the user equipment, allowing it to accurately determine the synchronization signal and PBCH block locations within a burst set, thereby improving synchronization efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the SS burst set has multiple optional cycles and the SS block can be at multiple time locations, then the system has high flexibility and adaptability, but the UE needs to perform multiple detections to determine the cycle and time location, resulting in low downlink measurement efficiency
Solution Approach 1:
The network pre-configures and informs the UE about the SS burst set cycle and SS block time location through higher layer signaling (RRC message, PBCH, or SIB) before the UE needs to perform synchronization. This preliminary provision of location indication information eliminates the need for multiple blind detections, allowing the UE to directly access synchronization signals at the indicated location while maintaining the flexibility of multiple optional cycles and time locations.
2Adaptability or versatility
If the UE performs multiple detections to determine SS burst set cycle and SS block time location, then the system maintains flexibility in configuration, but the time required for synchronization increases
Solution Approach 1:
The network provides location indication information containing the SS burst set cycle and SS block time location through higher layer signaling before the UE performs synchronization. This advance information provision allows the UE to immediately access the synchronization signal at the indicated location without performing multiple detections, thereby reducing synchronization time while preserving configuration flexibility.
3Quantity of substance
If the SS block is transmitted at various time locations including vacant locations, then spectrum resource utilization is improved, but the UE cannot efficiently determine the SS block location without multiple detections
Solution Approach 1:
The network provides location indication information through higher layer signaling that explicitly indicates the time location of the SS block within the SS burst set. This preliminary information provision allows the UE to directly access the synchronization signal at the indicated location without performing multiple blind detections, making the system efficient even when SS blocks are transmitted at various including vacant time locations.
Solution Approach 2:
Location indication information acts as an intermediary that bridges the network's flexible SS block placement strategy and the UE's synchronization needs. This intermediary provides the UE with the exact time location of the SS block, eliminating the need for multiple detections while allowing the network to utilize spectrum resources efficiently by placing SS blocks at various time locations including previously vacant ones.
Data Source
AI summary
A downlink synchronization method and apparatus, the method including receiving configuration information of a synchronization signal and physical broadcast channel (PBCH) block and that is sent by a transmission reception point (TRP), where the configuration information of the synchronization signal and PBCH block includes at least one of location indication information or time cycle indication information, determining at least one of a location of the synchronization signal and PBCH block in a synchronization signal burst set according to the location indication information or a time cycle of a synchronization signal burst set according to the time cycle indication information, receiving the synchronization signal and PBCH block according to at least one of the location or the time cycle, and performing downlink synchronization according to the synchronization signal and PBCH block.