Base Station Synchronization Signal Beamforming
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Solution Overview
Problem
Existing wireless communication networks face challenges in synchronizing terminal devices, particularly under poor reception conditions, as the initialization of wireless links between MIMO base stations and terminal devices does not benefit from enhanced antenna gain, and synchronization signal transmission is inefficient.
Innovation Solution
A method that uses precoding information to concentrate radio-frequency power and beamform synchronization signals to specific sub-areas within the coverage area of a base station, enhancing signal power and reducing energy consumption by allowing terminal devices to average fewer synchronization signals, and dynamically adjusts based on position and movement information of terminal devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional synchronization signal transmission is used without precoding, then terminal devices can receive synchronization signals, but the signal power is insufficient and energy consumption is high under poor reception conditions
Solution Approach 1:
The patent applies precoding to concentrate synchronization signal power in specific spatial directions corresponding to terminal device locations. By calculating precoding weights based on channel state information and applying them to synchronization signal transmission, the system achieves localized signal enhancement for terminals in poor reception conditions without increasing overall transmission power, thus improving synchronization reliability while managing energy consumption efficiently
2Area of stationary object
If multiple synchronization signals are transmitted to ensure coverage, then terminal devices can receive signals, but energy consumption increases due to repeated transmissions
Solution Approach 1:
The patent dynamically adjusts precoding weights based on real-time channel state information and terminal device positions. Instead of using fixed transmission patterns, the system continuously optimizes the spatial distribution of synchronization signal power according to current network conditions, enabling efficient coverage of multiple areas without repeated energy-consuming transmissions
3Adaptability or versatility
If synchronization signals are transmitted without spatial focusing, then all terminal devices can potentially receive signals, but signal power concentration is insufficient for distant or blocked terminals
Solution Approach 1:
The patent changes the spatial distribution parameters of synchronization signal power by applying precoding. Based on channel state information and terminal positions, the system calculates optimal precoding weights that modify the signal's spatial characteristics. This enables the same transmission to achieve different power intensity distributions in different spatial directions, adapting to various terminal locations and reception conditions while maintaining high signal power intensity for targeted areas
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach improves synchronization efficiency and reduces energy consumption by focusing synchronization signals on specific areas, enabling effective synchronization of multiple terminal devices even under critical reception conditions, while minimizing power usage.
Implementation Method 1
precoding information is applied to the antenna array in such a way that a radio-frequency power of transmitted radio-frequency signals is concentrated to a group of terminal devices which is arranged in a sub area of the coverage area of the base station
Data Source
AI summary
The present invention relates to a method for operating a base station (10) of a wireless communication network. Precoding information for concentrating a radio-frequency power of a transmitted radio-frequency signal to a group of terminal devices (41 to 43) arranged in a sub area (37) of a coverage area (30) of the base station (10) is determined and applied to an antenna array (11) of the base station (10). A synchronization signal is transmitted from the base station (10) to the group of terminal devices (41 to 43) using the precoding information.