Synchronization Signal Beam Alignment in V2X
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing V2X communication systems face challenges in efficiently aligning beams between vehicles without occupying additional time-frequency resources, as existing methods require signal synchronization and the use of reference signals for beam training, leading to delays and resource wastage.
Innovation Solution
A method where a first communications device sends synchronization signal blocks with receive beam time sequence information to a second communications device, allowing both devices to determine their respective receive and transmit beams without an additional reference signal, thereby reducing the need for additional time-frequency resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If signal synchronization is completed first and then beam training is performed using reference signals, then beam alignment can be achieved, but additional time-frequency resources are occupied and the process is delayed
Solution Approach 1:
The patent merges the beam training function into the synchronization signal block by embedding receive beam time sequence information within the synchronization signal itself. This allows beam training to be performed simultaneously with synchronization rather than sequentially, eliminating the need for separate reference signals and reducing time-frequency resource consumption while maintaining beam alignment accuracy
Solution Approach 2:
The synchronization signal block is designed to serve multiple functions: it provides synchronization information, contains receive beam time sequence information for beam training, and enables both synchronization and beam alignment processes. This multi-functionality eliminates the need for dedicated reference signals and reduces overall signaling overhead
2Measurement precision
If additional reference signals are used for beam training, then beam alignment can be achieved, but time-frequency resources are wasted
Solution Approach 1:
The synchronization signal block is designed to serve multiple functions: it provides synchronization information, contains receive beam time sequence information for beam training, and enables both synchronization and beam alignment processes. This multi-functionality eliminates the need for dedicated reference signals and reduces overall signaling overhead
Solution Approach 2:
The patent merges the beam training function into the synchronization signal block by embedding receive beam time sequence information within the synchronization signal itself. This allows beam training to be performed simultaneously with synchronization rather than sequentially, eliminating the need for separate reference signals and reducing time-frequency resource consumption
Data Source
AI summary
In one embodiment, a method includes: sending, by a first communications device, B synchronization signal blocks to a second communications device by using A transmit beams, where each of the B synchronization signal blocks includes an identifier of the first communications device and receive beam time sequence information of the first communications device, and wherein the receive beam time sequence information indicates a time sequence location at which the first communications device receives feedback information; receiving first feedback information from the second communications device based on the time sequence location by using C receive beams; determining a first receive beam based on a receive beam that is in the C receive beams and on which the first feedback information is received; and determining a first transmit beam based on the first receive beam or the first feedback information, where the first transmit beam belongs to the A transmit beams.