Multi-Beam Timing Advance Synchronization for Wireless Interference Reduction
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Solution Overview
Problem
Current wireless communication technologies lack an effective solution for synchronizing timing advances across different beam transmission signals from a single transmitter to a receiver, leading to interference from asynchronous signals.
Innovation Solution
A wireless communication method and apparatus that utilize multiple timing advances on the same carrier to ensure synchronized transmission across multiple beams, allowing each target device to meet its timing requirements and reduce interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple beams are used for transmission on the same carrier, then transmission capacity and coverage are improved, but timing synchronization between different beams deteriorates
Solution Approach 1:
The patent divides the timing advance management into separate segments for each beam. Each beam is assigned its own timing advance value (TA1, TA2, etc.) calculated based on its specific propagation delay characteristics. This segmentation allows each beam to be independently synchronized without affecting other beams, resolving the timing synchronization issue while maintaining multi-beam transmission capacity.
Solution Approach 2:
The patent changes the timing advance parameter for each beam based on its propagation delay. By calculating and applying beam-specific timing advance values (TA = propagation delay × 2), the system adjusts the transmission timing parameter for each beam individually, ensuring that all beams arrive at the receiver within the cyclic prefix window and maintain proper synchronization.
2Reliability
If multiple antenna panels are used to form independent transmit beams, then transmission reliability and capacity are improved, but timing alignment control becomes more complex
Solution Approach 1:
The patent implements self-service timing alignment by having each antenna panel independently calculate its own timing advance value based on its measured propagation delay. Each panel autonomously determines its TA value without requiring complex centralized coordination, thereby maintaining transmission reliability while reducing the complexity of timing alignment control.
Solution Approach 2:
The patent performs preliminary timing advance calculation and configuration for each antenna panel before actual data transmission. The timing advance values are pre-computed based on propagation delay measurements and configured in advance, allowing each panel to self-align its transmission timing without real-time coordination complexity during data transmission.
Data Source
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AI summary
Embodiments of the present invention provide a wireless communications method and apparatus. The method includes: receiving, by a first device, at least two pieces of timing advance TA information, where the at least two pieces of TA information are corresponding to at least two beams of the first device on a same carrier; and performing, by the first device, timing adjustment on transmission on the at least two beams based on the at least two pieces of TA information. By using the foregoing technical solution, interference caused by asynchronous signals can be reduced or avoided.