Mesh Network Node Frequency Hopping for Interference Resilience
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Solution Overview
Problem
Existing mesh networks for utility data communication face challenges in noisy and high-traffic environments, where electromagnetic interference and communication traffic hinder effective data transmission between devices.
Innovation Solution
A data communication node in the mesh network is equipped with a radio frequency driver, a timing device for synchronization, and a memory device storing a frequency channel table, allowing for sequential transmission of data packets over a predetermined sequence of frequency channels, with retransmission attempts on different channels if initial attempts fail, to ensure reliable data transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data is transmitted using a single frequency channel, then transmission speed is maintained, but transmission reliability deteriorates in noisy environments
Solution Approach 1:
The system dynamically switches between frequency channels based on transmission success. Instead of using a fixed single channel, the communicating nodes adaptively hop to different channels when interference is detected, making the communication system flexible and responsive to environmental conditions while maintaining reliability without excessive complexity
Solution Approach 2:
The system changes the frequency parameter of the transmission channel systematically through a predetermined sequence. When transmission fails on one frequency, the system transitions to another frequency in the sequence, allowing reliable data transfer in noisy environments by varying the operational parameter (frequency) rather than maintaining a fixed configuration
2Reliability
If multiple frequency channels are used for retransmission, then transmission reliability improves, but transmission time increases
Solution Approach 1:
The frequency channel table with predetermined sequence is established in advance during system initialization. Both communicating nodes store and synchronize to this predetermined sequence beforehand, so when retransmission is needed, they can immediately jump to the next frequency without calculation or negotiation delays, reducing time loss while maintaining reliability
Solution Approach 2:
The system uses periodic time periods synchronized between nodes, where each time period corresponds to attempting transmission on a specific frequency channel. This structured periodic approach allows systematic retrying across multiple frequencies while maintaining timing synchronization, balancing reliability improvement with time efficiency
Data Source
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AI summary
Systems and methods for communicating data within mesh networks are provided. According to one implementation, a data communication node comprises a radio frequency (RF) driver configured to transmit RF signals to and receive RF signals from a remote device via an antenna. The node further comprises a timing device configured to establish a plurality of sequential time periods having start times and end times in synchronization with corresponding time periods of the remote device. The node also includes a memory device configured to store a frequency channel table listing a predetermined sequence of channels, the table also being stored in the remote device. Furthermore, the node comprises a transmitting module configured to forward information related to a data packet to the RF driver for transmission over a channel of the predetermined sequence of channels to the remote device during a first of the plurality of sequential time periods.