Radio Network Frequency Mode Switching
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Solution Overview
Problem
The duration of transitioning between frequency avoidance and fixed frequency transmission modes in radio networks is excessively long, limiting users' ability to leverage the advantages of each mode, particularly for services requiring different transmission characteristics such as voice communication or high-speed data transfer.
Innovation Solution
The method involves extending the duration of the test plateau by an integer factor (between 1 and 6) during the frequency determination process, which includes verifying the availability of the receiving station and determining the best fixed frequency for high-speed data transmission, allowing for rapid switching between modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the duration of the test plateau is extended by an integer factor (1 to 6) during frequency determination, then the transmission rate and reliability of the second mode improve, but the transition duration between modes increases
Solution Approach 1:
The patent changes the parameter of test plateau duration by multiplying it by an integer factor between 1 and 6, allowing optimization of the balance between reliable frequency determination and transition speed. This parameter adjustment enables the system to adapt the test duration based on operational requirements.
2Reliability
If the network operates in frequency avoidance mode (first mode) with EVF plateaus, then all stations can communicate conference information reliably, but the transmission rate is limited to 2400 bits per second
Solution Approach 1:
The patent implements dynamic mode switching between frequency avoidance mode and fixed frequency mode. The system can transition from the first mode (suitable for conference communication) to the second mode (suitable for high-speed data transmission) based on operational requirements, making the transmission characteristics adaptable rather than static.
Solution Approach 2:
The network is designed to support multiple transmission modes within the same infrastructure. The first frequency plan supports frequency avoidance for conference communication, while the second frequency plan supports fixed frequency for high-speed data transmission, making the system universally capable of handling different communication needs.
3Productivity
If the network switches to fixed frequency mode (second mode) for high-speed data transmission up to 19200 bits per second, then the transmission rate improves, but the transition duration from frequency avoidance mode becomes excessively long
Solution Approach 1:
The patent optimizes the transition duration parameter by allowing the test plateau duration to be multiplied by an integer factor between 1 and 6. This enables the system to achieve reliable frequency determination in the second mode while minimizing the transition time, balancing speed and reliability requirements.
4Measurement precision
If the test plateau duration is increased to ensure reliable frequency determination, then the accuracy of frequency selection improves, but the time required for mode transition increases
Solution Approach 1:
The patent introduces a configurable parameter (integer factor from 1 to 6) that multiplies the base test plateau duration. This allows the system to adjust the test duration to achieve sufficient frequency determination accuracy while minimizing transition time, optimizing the balance between measurement precision and transition speed.
Data Source
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AI summary
This method for transmitting information between a plurality of radioelectric stations of one and the same network, each station comprising a sender and a receiver, comprises: a first mode of transmission, in which the network operates under frequency evasion in a first frequency plan, the frequency used in the transmission of data being retained during an EVF plateau, and changing from one EVF plateau to another according to a frequency change law; a second mode of transmission in a second frequency plan, in which a sending station (A) sends data on a fixed frequency to a receiving station (B), the second mode comprising a step (120) of determining the fixed frequency, the determining step comprising the sending of a test word on each frequency of the second plan during a respective test plateau. The duration of the test plateau is equal to the duration of the EVF plateau multiplied by an integer factor whose value lies between 1 and 6.