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

VSEngineering 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

Engineering Contradiction:
Improvebeamforming capabilityVSAvoidantenna mounting complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

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.

Inventive Principle:
Principle #1Segmentation

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.

Inventive Principle:
Principle #15Dynamics

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

Engineering Contradiction:
Improveconnection reliabilityVSAvoidpower consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

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.

Inventive Principle:
Principle #16Partial or excessive action

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.

Inventive Principle:
Principle #10Preliminary action

3Measurement precision

If all beam training processes are performed to establish beam patterns, then connection accuracy is improved, but time efficiency deteriorates

Engineering Contradiction:
Improvebeam pattern accuracyVSAvoidbeam training time
Core Design Contradiction:
Measurement precisionVSLoss of time

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.

Inventive Principle:
Principle #1Segmentation

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.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS11088742B2Electronic device for performing beamforming in wireless communication system and method therefor
Publication Date: 2021.08.10 SAMSUNG ELECTRONICS CO LTD
  • US11088742B2 patent drawing
  • US11088742B2 patent drawing
  • US11088742B2 patent drawing

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.