Beamforming Transceiver Dynamic Beamwidth Adjustment
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Solution Overview
Problem
Current wireless communication systems face challenges in supporting different propagation characteristics, which affect signal transmission efficiency and coverage area, especially in high-frequency bands, due to increased path loss and reduced wave propagation distance.
Innovation Solution
The system allocates resource periods for various propagation characteristics, transmits system information including these characteristics, and receives feedback to determine optimal channel qualities, allowing for the selection and application of appropriate beamforming schemes based on antenna array configurations and polarization characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If beamforming is used to increase transmission distance by concentrating wave propagation in a specific direction, then propagation path loss is reduced and transmission distance is increased, but multipath channel characteristics are reduced making it difficult to support transmission diversity
Solution Approach 1:
The patent applies dynamics by making the beamforming configuration adjustable and adaptable based on channel conditions. The system dynamically selects between different beamforming modes (narrow beam for distance, wide beam for diversity) depending on the propagation environment, transforming a static beamforming approach into a dynamic one that can respond to changing channel characteristics.
Solution Approach 2:
The patent changes the beamwidth parameter of the beamforming scheme based on channel conditions. By adjusting the beamwidth parameter - using narrow beamwidth for long-distance transmission and wide beamwidth for environments requiring transmission diversity - the system adapts its propagation characteristics to match the channel conditions, thereby resolving the contradiction between path loss reduction and diversity support.
2Loss of energy
If a narrow beamwidth is used for beamforming to increase transmission distance, then propagation path loss is reduced, but the coverage area is limited
Solution Approach 1:
The patent implements dynamic beamwidth adjustment where the system can switch between narrow and wide beam patterns based on channel conditions and coverage requirements. This dynamic approach allows the system to optimize for either distance or coverage area depending on the specific propagation environment, rather than being constrained to a fixed beamwidth.
Solution Approach 2:
The patent changes the beamwidth parameter based on operational requirements. When long-distance transmission is needed, a narrow beamwidth is selected to concentrate energy and reduce path loss. When broader coverage is required, the system switches to a wide beamwidth configuration, thereby adapting the coverage area parameter to match the communication needs.
3Area of stationary object
If a wide beamwidth is used for beamforming to increase coverage area, then coverage area is increased, but propagation path loss increases reducing transmission distance
Solution Approach 1:
The patent applies dynamics by enabling the system to adaptively select beamwidth based on channel conditions. When coverage area is the priority, wide beamforming is used; when transmission distance is critical, the system dynamically switches to narrow beamforming to minimize path loss, making the system responsive to changing operational requirements.
Solution Approach 2:
The patent adjusts the beamwidth parameter according to the dominant communication requirement. The system monitors channel conditions and propagation characteristics, then changes the beamwidth parameter accordingly - selecting wide beamwidth for coverage-critical scenarios and narrow beamwidth for distance-critical scenarios, thereby optimizing the trade-off between coverage area and path loss.
4Reliability
If beamforming is applied to reduce propagation path loss, then transmission distance is increased, but it becomes difficult to support transmission diversity due to reduced multipath characteristics
Solution Approach 1:
The patent makes the beamforming configuration dynamic and adaptable to channel conditions. The system can switch between narrow-beam modes that optimize for transmission distance and reliability, and wide-beam modes that preserve multipath characteristics for transmission diversity, allowing flexible adaptation to different propagation environments.
Solution Approach 2:
The patent changes the beamwidth parameter based on the dominant channel characteristic. When line-of-sight or direct path propagation dominates, the system uses narrow beamforming to maximize distance and reliability. When multipath propagation is significant, the system switches to wide beamforming to maintain transmission diversity, thereby adapting to the prevailing channel conditions.
Data Source
AI summary
A method for operating a base station in a wireless communication system in order to support a plurality of propagation characteristics is provided. The method includes allocating resource periods for respective propagation characteristics, transmitting system information including information on the propagation characteristics, transmitting a reference signal with the propagation characteristic corresponding to the relevant resource period through at least one of the resource periods, and receiving feedback information determining channel qualities for all of the propagation characteristics.