Millimeter-Wave Antenna Switching Using Grip and Motion Sensing
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Solution Overview
Problem
In 5G communication systems using millimeter waves, antennas on terminals experience poor channel environments due to low transmittance characteristics, leading to performance degradation when gripped or contacted by users or objects, necessitating a method to select an antenna with a better channel state in real-time.
Innovation Solution
A method involving sensors to acquire state information, such as movement and usage states, to select the most suitable antenna for signal transmission and reception, prioritizing antennas with minimal physical contact and optimal positioning, using grip sensors and 6-axis sensors to determine the best antenna configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single antenna is used for signal transmission and reception, then the device complexity is reduced, but the reliability deteriorates when the antenna is gripped or contacted by users or objects
Solution Approach 1:
The terminal divides the antenna system into multiple independent antenna elements (first antenna and second antenna) positioned at different locations. This segmentation allows the system to switch between antennas based on contact detection, ensuring that signal transmission continues reliably even when one antenna is gripped or contacted by a user or object.
Solution Approach 2:
The system dynamically changes the operational parameter (active antenna selection) based on the contact state detected by sensors. When contact is detected on one antenna, the system switches to the other antenna, adapting the antenna selection parameter in real-time to maintain reliable signal transmission despite changing physical conditions.
2Reliability
If multiple antennas are used for signal transmission and reception, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The antenna system implements dynamic selection between multiple antennas based on real-time contact state detection. The terminal switches between the first and second antennas according to which antenna is being gripped or contacted, making the system adaptive and reliable without requiring complex simultaneous operation of all antennas.
Solution Approach 2:
The terminal autonomously monitors its own contact state using integrated sensors and automatically switches between antennas without external intervention. This self-service mechanism maintains reliable signal transmission by detecting when an antenna is contacted and independently selecting an alternative antenna, reducing the need for complex external control systems.
3Reliability
If antenna selection is performed in real-time based on contact state, then the communication performance is improved, but the response time increases due to sensor detection and processing
Solution Approach 1:
The terminal pre-positions multiple antennas at different locations and pre-configures the switching mechanism before contact occurs. When contact is detected, the system can immediately switch to the appropriate pre-positioned antenna, minimizing the time loss associated with antenna selection and switching operations.
Data Source
AI summary
The present disclosure relates to a communication technique for converging IoT technology with a 5G communication system for supporting a higher data transmission rate beyond a 4G system, and a system therefor. The present disclosure may be applied to an intelligent service (for example, a smart home, a smart building, a smart city, a smart car or connected car, health care, digital education, retail business, a security and safety-related service, etc.) on the basis of 5G communication technology and IoT-related technology. The present invention proposes a method and a device, of a terminal using a millimeter wave, for selecting an antenna in order to transmit/receive a signal in a next-generation communication system. According to the present invention, the terminal may select, on the basis of information acquired from a sensor, an antenna having no physical contact or positioned in a relatively high position.