Directional Antenna Steering for Fast Mobile Cell Handover
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing mobile devices with non-directional antennas experience communication delays when in high-speed motion, as they cannot seamlessly handover to neighboring cells due to continuous signal reception from the current cell.
Innovation Solution
A mobile device equipped with a direction sensor, signal processing unit, and directional antenna unit that adjusts its antenna direction based on the device's movement direction, using a phased array liquid crystal antenna or metamaterial antenna to maximize signal strength and establish connections with the next cell in time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a non-directional antenna is used in high-speed motion environment, then the mobile device can maintain continuous signal reception from the current cell, but it cannot handover to the next cell in time, resulting in communication delay
Solution Approach 1:
The patent applies the dynamics principle by making the antenna directional and adjustable rather than fixed and non-directional. The antenna direction is dynamically changed according to the movement direction of the mobile device, allowing it to track the next cell proactively. This dynamic adjustment enables timely handover in high-speed motion environments while maintaining reliable signal reception.
2Loss of time
If a directional antenna with adjustable direction is implemented, then timely handover to next cell is enabled, but the device complexity increases due to additional components like direction sensors and control units
Solution Approach 1:
The patent applies the universality principle by integrating multiple functions into existing device components. The direction sensor not only detects movement direction for antenna adjustment but also serves as part of the device's orientation sensing system. The control unit that manages antenna direction also coordinates with other device functions, reducing the need for entirely separate dedicated components and minimizing overall system complexity.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A mobile device (100), including: a direction sensor (110), a signal processing unit (120) and a directional antenna unit (130), said direction sensor (110) being configured to detect a current movement direction of said mobile device (100); said signal processing unit (120) being configured to determine an antenna adjustment direction of said directional antenna unit (130) according to said current movement direction, said antenna adjustment direction being related to said current movement direction; and said directional antenna unit (130) being configured to adjust the antenna direction from a first direction to a second direction according to said antenna adjustment direction. The mobile device (100) can adjust direction in which signals are received and realize directional signal reception and transmission function. The communication effect is better for a mobile device in motion to receive base station signals transmitted in the motion direction, enabling faster response to mobile device (100)'s switching base station. A method for adjusting an antenna of a mobile device is further provided.