Beamforming Antenna Array with Dual-Circuit Proximity Detection
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Solution Overview
Problem
In WLAN systems using the 2.4 GHz and 5 GHz bands, the limited antenna mounting space makes it difficult to precisely adjust beam width and direction for beamforming, while mmWave systems face high path loss due to strong signal straightness and frequency characteristics, requiring inefficient beam training processes.
Innovation Solution
An electronic device with both non-directional and directional wireless communication circuits, including a processor and memory, efficiently performs beamforming by reflecting specific events or states, enabling precise beam pattern setting and fixed usage in mmWave communication to optimize antenna usage and reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large number of antennas are mounted to apply beamforming in mmWave systems, then beamforming capability is improved, but device complexity and antenna mounting space requirements increase
Solution Approach 1:
The patent divides the beamforming operation into two distinct phases: a beam training phase using multiple antennas to establish beam patterns, and a data transmission phase using a reduced subset of antennas. This segmentation allows the system to achieve reliable beamforming capability during training while reducing complexity during actual data transmission, as only the necessary subset of antennas remains active.
Solution Approach 2:
The system dynamically adjusts the number of active antennas based on the operational phase. During beam training, all antennas are activated to perform comprehensive beam pattern establishment. During data transmission, the system transitions to a dynamic state where only a subset of antennas remains active, reducing complexity while maintaining beamforming effectiveness through the pre-established beam patterns.
2Reliability
If all beam training processes are performed to form a beam pattern for connection, then connection reliability is improved, but power consumption and time efficiency deteriorate
Solution Approach 1:
The patent applies partial action by performing beam training only to the extent necessary for reliable connection establishment. Instead of continuously executing complete beam training processes, the system performs beam training once to establish beam patterns, then uses a reduced subset of antennas for data transmission. This partial approach maintains connection reliability while significantly reducing power consumption during ongoing communications.
Solution Approach 2:
The beam training process is performed as a preliminary action before data transmission. By completing the beam pattern establishment in advance using all antennas, the system creates a foundation for reliable connection that eliminates the need for repeated full beam training sequences during data transmission, thereby reducing power consumption while maintaining connection reliability.
3Measurement precision
If all beam training processes are performed to establish beam patterns, then connection accuracy is improved, but time efficiency deteriorates
Solution Approach 1:
The patent segments the beamforming process into an initial beam training phase that achieves accurate beam pattern establishment, followed by a data transmission phase that uses a subset of antennas. This segmentation ensures that beam pattern accuracy is achieved during the training phase through comprehensive antenna usage, while the subsequent transmission phase reduces time loss by using pre-established patterns with fewer antennas.
Solution Approach 2:
The beam training process is executed as a preliminary action before data transmission begins. By completing the time-consuming beam pattern establishment in advance with all antennas, the system achieves high measurement precision for beam directions. The pre-established beam patterns then enable faster data transmission without repeatedly incurring the full beam training time penalty.
Data Source
AI summary
Disclosed is an electronic device comprising: a touch screen display; a battery; a plurality of antenna elements arranged in order to perform beamforming for directional wireless communication; a first wireless communication circuit configured to provide, through the antenna elements, first wireless communication having a first coverage; a second wireless communication circuit configured to provide second wireless communication having a second coverage greater than the first coverage; and a processor connected to the display, the battery, the first wireless communication circuit, and the second wireless communication circuit, wherein the processor stores instructions for determining whether an external device is close to the electronic device by using the first wireless communication circuit, enabling at least one antenna element, rather than all the antenna elements, among the plurality of antenna elements, and transmitting data to the external device by using the second wireless communication circuit and the enabled at least one antenna element.


