Hierarchical Underwater Communication System Frequency Allocation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional underwater communication networks face limitations in managing a large number of sensor nodes due to restricted frequency usage, leading to inefficient control and increased battery consumption, especially when multiple sensor nodes compete for limited frequencies, resulting in reduced operational periods and decreased data transmission efficiency.
Innovation Solution
A hierarchical underwater communication system is implemented, where a central underwater base station controller manages multiple underwater base stations, which in turn manage sensor nodes, using different frequency bands for communication between the base stations and sensor nodes, and between base stations and the controller, allowing for efficient frequency allocation based on estimated distances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If only one frequency is allocated to one sensor node in conventional underwater communication networks, then communication reliability is improved, but the number of communicable sensor nodes is limited
Solution Approach 1:
The system segments the frequency resource management into hierarchical levels: underwater base station controller manages frequencies for multiple base stations, and each base station manages frequencies for its sensor nodes. This segmentation allows multiple sensor nodes to communicate simultaneously using different frequencies without interference, resolving the contradiction between communication reliability and the number of communicable nodes.
Solution Approach 2:
The patent introduces a hierarchical management dimension to frequency allocation, moving from flat single-frequency assignment to multi-level frequency management. Base station controllers allocate frequencies across base stations, which then allocate to sensor nodes, creating a two-dimensional frequency management structure that expands the number of simultaneous communications while maintaining reliability through organized frequency separation.
2Quantity of substance
If multiple frequencies are used to increase the number of sensor nodes, then the number of communicable sensor nodes increases, but battery consumption greatly increases due to continuous frequency inspection
Solution Approach 1:
Sensor nodes are assigned dedicated frequencies by base stations, allowing them to communicate without continuously inspecting for available frequencies. The system provides self-service frequency allocation where nodes know their assigned frequencies in advance, eliminating the energy-consuming frequency inspection process while maintaining the ability to support multiple sensor nodes.
Solution Approach 2:
Frequency allocation is performed in advance by base station controllers before sensor nodes begin communication. This preliminary frequency assignment eliminates the need for sensor nodes to continuously search for available frequencies during operation, significantly reducing battery consumption while still enabling multiple nodes to communicate simultaneously on their pre-assigned frequencies.
3Reliability
If frequency is allocated to one sensor node in conventional networks, then communication reliability is improved, but all other sensor nodes cannot transmit or receive signals simultaneously
Solution Approach 1:
The patent merges multiple frequency channels into a unified hierarchical communication system. Base station controllers coordinate frequencies across multiple base stations, and each base station coordinates frequencies for its sensor nodes. This merging of frequency resources through hierarchical management allows simultaneous transmissions on different frequencies, maintaining communication reliability while dramatically improving overall data transmission efficiency through parallel communications.
Data Source
AI summary
The present invention provides an underwater communication system capable of efficiently communicating with a plurality of sensor nodes by using a limited frequency in the water. The present invention has a hierarchical structure in which one underwater base station control station manages a plurality of underwater base stations in the water, and each underwater base station within a plurality of underwater base stations centrally manages a plurality of underwater sensor nodes. Furthermore, the present invention enables efficient underwater communication the underwater environment by using different frequencies, when the underwater base station control station performs the underwater communication with the plurality of underwater base stations, and when the underwater base stations perform the underwater communication with the plurality of underwater sensor nodes.