Radio Communication Antenna Setting Pair Storage for Link Re-establishment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In indoor millimeter wave systems, when one propagation path is blocked, minimizing the transmission disconnection period is crucial, especially for real-time data transmission, but existing methods require extensive processing time to switch to alternative paths, making them impractical for high-rate applications like non-compressed image transmission.
Innovation Solution
A method that involves determining and storing multiple antenna-setting pairs during initial link establishment, allowing for rapid selection and re-establishment of communication using stored pairs when a link is disconnected or quality deteriorates, ensuring time synchronization between devices to resume communication quickly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple receiving units are installed to provide multiple transmission paths, then transmission reliability is improved when one path is shielded, but device complexity increases and cannot carry out transmission when all paths are shielded or shielding occurs near the transmitter
Solution Approach 1:
The patent performs preliminary actions by establishing multiple antenna-setting pairs during initial link training and storing them in advance. When link disconnection occurs, the system can immediately select from pre-stored pairs without performing complex real-time search, thus reducing reconnection time while maintaining reliability
Solution Approach 2:
The patent segments the beam direction control into discrete antenna-setting pairs that are predetermined and stored. Instead of continuously searching for optimal beams, the system selects from segmented pre-established pairs, simplifying the reconnection process and reducing computational complexity
2Strength
If beam width is narrowed to increase directive gain for reflected waves, then reception strength is improved, but the time necessary to search beam directions increases
Solution Approach 1:
The patent performs preliminary beam direction determination during initial link training and stores the results in advance. When link disconnection occurs, the system can immediately select from pre-determined beam directions without performing time-consuming real-time search, thus reducing reconnection time while maintaining strong signal reception
Solution Approach 2:
The patent creates copies of optimal antenna-setting pairs from the initial training phase and stores them for later use. These copied settings allow the system to rapidly re-establish links without重新performing complex beam searching, effectively copying the success of initial training to subsequent reconnections
3Productivity
If link re-establishment is performed quickly to minimize disconnection time, then productivity is improved, but time synchronization between devices may not be sufficiently maintained
Solution Approach 1:
The patent performs preliminary time synchronization during initial link training and establishes synchronization parameters in advance. When link disconnection occurs, the system can quickly resume using pre-established synchronization settings, thus maintaining both speed and synchronization reliability without requiring lengthy real-time synchronization procedures
Data Source
AI summary
When communication is to be performed between communication devices having a directivity control function, a plurality of antenna-setting pairs available for the communication are stored by an initial training, and the communication is started by using one of the plurality of antenna-setting pairs. When the communication quality is deteriorated, firstly, a training signal is transmitted while successively setting each one of the plurality of antenna-setting candidates determined in the initial training in a transmitting antenna of one of the communication devices (400), and the training signal is received in a state where a quasi-omni pattern is generated in a receiving antenna of the other communication device (500). In this way, in radio communication performing beam forming, it is possible to ensure the time synchronization between the communication devices when communication is disconnected or communication quality is deteriorated due to shielding or the like.