Beam Direction Priority Control for Millimeter Wave Signal Continuity
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Solution Overview
Problem
High-frequency millimeter wave radio communication in indoor environments faces challenges such as signal attenuation and shadowing due to human bodies, leading to difficulties in maintaining continuous transmission, especially when direct waves are blocked, and existing solutions require complex user intervention or additional infrastructure like reflectors.
Innovation Solution
A radio control method that rapidly sets beam directions based on communication quality by prioritizing beam directions with the highest quality and using a weighting coefficient to adjust priorities, allowing for efficient switching between direct and reflected waves without the need for additional infrastructure or complex user setup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If millimeter wave radio communication is used for high-speed data transmission, then data transmission speed is improved, but signal attenuation and shadowing occur due to human bodies and obstacles
Solution Approach 1:
The patent implements dynamic beam direction switching by storing multiple beam directions in priority order and automatically switching between them based on communication quality detection. The system dynamically adjusts the beam direction without user intervention, allowing the communication system to adapt to changing indoor environments and maintain reliable transmission despite signal attenuation from human bodies or obstacles.
2Reliability
If multiple receiving parts are arranged to form multiple transmission lines, then communication reliability is improved when direct waves are blocked, but device complexity increases
Solution Approach 1:
Instead of adding multiple receiving parts to create multiple transmission lines, the patent inverts the approach by using a single receiving part that can dynamically switch between multiple beam directions. This achieves the same reliability benefit of having multiple communication paths while avoiding the complexity of multiple receiving parts and their associated transmission lines.
3Reliability
If reflectors are mounted on walls or ceilings to provide multiple transmission lines, then communication reliability is improved, but ease of operation deteriorates due to requiring user consideration and setup
Solution Approach 1:
The patent enables the communication device to automatically determine and switch between optimal beam directions without requiring user setup or consideration of reflector placement. The system self-services by detecting communication quality and autonomously selecting the best beam direction from stored options, eliminating the need for users to manually configure reflectors or consider their arrangement.
4Productivity
If beam direction switching is performed rapidly to reduce data transmission interrupt time, then productivity is improved, but measurement precision deteriorates due to difficulty in detecting arrival direction
Solution Approach 1:
The patent performs preliminary action by storing multiple beam directions in priority order before actual communication occurs. This pre-prepared list of beam directions allows the system to rapidly switch between them during communication without needing to perform complex real-time arrival direction detection, thus maintaining both fast switching capability and measurement accuracy.
Data Source
AI summary
Provided is a radio control method for a radio communication being performed in a beam direction that is set on the basis communication quality basis, including a step of acquiring a data string formed of at least a beam direction and communication quality in the beam direction; and a step of sequentially assigning a priority rank for setting the beam direction for performing the radio communication from the beam direction in which the highest communication quality is obtained, according to the data string. In the step of assigning a priority rank, no priority rank is assigned to the beam direction adjacent to the beam direction to which a priority rank has been already assigned or to the beam direction in the vicinity containing the adjacent beam direction.