Relay Synchronization Signal Configuration for Resource Overhead Reduction
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Solution Overview
Problem
In new radio (NR) communications systems, relay nodes face high resource and time overheads when detecting synchronization signals for mutual discovery, especially in high frequency carrier networks with poor diffraction capabilities and severe propagation attenuation, making it difficult to coordinate resources for continuous signal transmission and reception.
Innovation Solution
A synchronization signal configuration method where a parent node sends configuration information indicating specific time-frequency positions for both sending and receiving synchronization signals to child nodes, reducing the need for each node to detect all possible positions, thereby minimizing resource and time overheads for mutual discovery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If relay nodes detect all possible synchronization signal positions (W positions) to implement mutual discovery, then discovery reliability is improved, but resource overhead and time consumption increase significantly
Solution Approach 1:
The patent segments the synchronization signal detection process by dividing relay nodes into different groups (first relay nodes and second relay nodes) with different detection requirements. First relay nodes detect only N synchronization signals, while second relay nodes detect M synchronization signals, where M < N. This segmentation allows the system to maintain reliable mutual discovery while reducing overall detection time overhead.
Solution Approach 2:
The patent applies local quality by assigning different detection capabilities to different relay nodes based on their specific roles and requirements. Relay nodes closer to the root node or with specific functional requirements detect more synchronization signals (N positions), while other relay nodes detect fewer signals (M positions). This localized differentiation optimizes the balance between discovery reliability and time overhead.
2Reliability
If relay nodes detect all possible synchronization signal positions (W positions) to implement mutual discovery, then discovery reliability is improved, but resource overhead increases significantly
Solution Approach 1:
The patent segments the synchronization signal detection process by dividing relay nodes into different groups (first relay nodes and second relay nodes) with different detection requirements. First relay nodes detect only N synchronization signals, while second relay nodes detect M synchronization signals, where M < N. This segmentation allows the system to maintain reliable mutual discovery while reducing overall detection time overhead.
Solution Approach 2:
The patent applies local quality by assigning different detection capabilities to different relay nodes based on their specific roles and requirements. Relay nodes closer to the root node or with specific functional requirements detect more synchronization signals (N positions), while other relay nodes detect fewer signals (M positions). This localized differentiation optimizes the balance between discovery reliability and time overhead.
3Adaptability or versatility
If relay nodes perform extensive synchronization signal detection to implement mutual discovery, then discovery capability is improved, but continuous signal transmission and reception become difficult to coordinate
Solution Approach 1:
The patent segments the synchronization signal detection process by dividing relay nodes into different groups (first relay nodes and second relay nodes) with different detection requirements. First relay nodes detect only N synchronization signals, while second relay nodes detect M synchronization signals, where M < N. This segmentation allows the system to maintain reliable mutual discovery while reducing overall detection time overhead.
Solution Approach 2:
The patent applies preliminary action by pre-configuring the network device with information about which relay nodes should detect which synchronization signals. This pre-configuration allows relay nodes to know in advance which positions to monitor, eliminating the need for extensive real-time detection and facilitating better coordination of signal transmission and reception.
Data Source
AI summary
Examples synchronization signal configuration methods and apparatus are described. One example method is applied to a relay network including a first node and a second node, and the first node is a parent node of the second node. The example method includes sending synchronization signal configuration information by the first node to the second node, where the synchronization signal configuration information is used to indicate M first synchronization signal time-frequency positions and N second synchronization signal time-frequency positions in a candidate synchronization signal time-frequency position set. The first synchronization signal time-frequency position is used by the second node to send a first synchronization signal, the second synchronization signal time-frequency position is used by the second node to receive or detect a second synchronization signal, the candidate synchronization signal time-frequency position set includes W synchronization signal time-frequency positions, and W≥(M+N).