Synchronization Signal Block Time Domain Positioning for 5G Interference Reduction
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Solution Overview
Problem
In future communication systems like 5G, accurately transmitting synchronization signals across multiple beams covering an entire cell is challenging due to overlapping time domain resource positions, which can lead to interference and poor signal detection performance.
Innovation Solution
A method and device for transmitting synchronization signals, where a network device generates and sends time domain position indication information to terminal devices, including first and second time domain offset information, time domain resource indication, and time interval information, allowing terminal devices to accurately determine the positions of synchronization signal blocks and configure time domain resources for transmission, ensuring no overlap with adjacent cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple SS blocks are transmitted on different beams covering the entire cell, then the coverage area is improved, but the time domain resource positions overlap causing interference
Solution Approach 1:
The patent divides the cell coverage into multiple beams, with each beam transmitting SS blocks on different time domain resources. The network device configures specific time domain positions for each beam's SS blocks, segmenting the time domain resources to prevent overlap and interference while maintaining comprehensive coverage.
Solution Approach 2:
The patent introduces time domain positioning as an additional dimension for resource allocation. By configuring specific time domain offsets and positions for SS blocks on different beams, the system transforms the problem from spatial overlap to time-domain separation, eliminating interference while preserving coverage area.
2Measurement precision
If time domain resources are configured for multiple beams, then the signal detection performance is improved, but the resource position overlap occurs
Solution Approach 1:
The network device performs preliminary configuration of time domain resource positions for SS blocks before transmission. By pre-determining the time domain offsets and positions for each beam's SS blocks, the system ensures that resources are properly allocated without overlap, thereby maintaining both detection performance and reliability.
3Area of stationary object
If SS blocks are transmitted on different beams with beam sweeping, then the entire cell is covered, but the time domain resource positions need to be carefully managed
Solution Approach 1:
The terminal device autonomously determines the time domain resource positions of SS blocks by receiving time domain offset information from the network device. This self-service approach allows the terminal to independently calculate and identify SS block positions without requiring complex network coordination, simplifying resource management while maintaining full cell coverage.
Data Source
AI summary
A method and device for transmitting a synchronization signal are provided. The method includes: a terminal device receives time domain position indication information sent by a network device, wherein the time domain position indication information is used for indicating an offset of a position of a time domain resource of each SS block in M SS blocks relative to a predetermined position, and the M is a positive integer greater than or equal to 1; and the terminal device determines the time domain resource of each SS block according to the time domain position indication information.