Route-Based Channel Map for Wireless Spectrum Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional geo-location database methods for managing wireless spectrum are inefficient for mobile devices that frequently change location, requiring continuous updates and re-registration, especially for devices moving at high velocities, as channel maps are only valid within a limited range and must be updated as the device moves.
Innovation Solution
A system and method that provides a channel map solution for a predetermined travel route or bound travel area, where the server constructs a channel map valid for the entire route or area, reducing the need for continuous communication and updates by pre-communicating a single data set of available channels to the device, using pixel-based, area-based, or vector-based approaches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional geo-location database methods are used to manage spectrum for mobile devices, then spectrum authorization and usage policies can be enforced, but continuous communication overhead and frequent updates are required as devices move
Solution Approach 1:
The system pre-calculates and provides channel maps for multiple future locations along a predicted device trajectory in advance, rather than waiting for real-time requests. This preliminary action allows the mobile device to operate continuously without frequent database communications, resolving the contradiction between maintaining reliable spectrum authorization and reducing communication overhead time
2Measurement precision
If channel maps are updated in real-time as devices move, then accurate spectrum availability information is maintained, but the system becomes inefficient for high-velocity mobile devices
Solution Approach 1:
The system segments the service area into multiple geographic zones with pre-determined channel maps. Instead of providing a single continuous channel map that must be constantly updated, the channel space is divided into discrete segments corresponding to different locations along the predicted trajectory. The mobile device receives appropriate segment maps in advance, maintaining measurement precision while improving spectrum management efficiency by eliminating continuous updates
Solution Approach 2:
The system performs preliminary calculations to determine channel availability for multiple future locations along the predicted device trajectory before the device actually reaches those locations. This advance preparation maintains accurate channel map information for each segment while avoiding the inefficiency of real-time updates during high-velocity movement
3Loss of time
If a single channel map is provided for the entire travel route, then communication overhead is reduced, but the channel map may not be valid for all locations along the route
Solution Approach 1:
The system divides the travel route into multiple segments, each with its own pre-calculated channel map. Instead of providing a single channel map for the entire route, the system segments both the geographic area and the corresponding channel information. This allows the mobile device to receive multiple smaller channel maps in advance, each valid for its specific segment, maintaining reliability while reducing the need for frequent updates compared to a single comprehensive map
Solution Approach 2:
The system provides different channel map characteristics for different locations along the trajectory. Each segment receives a channel map tailored to its specific geographic and spectral conditions rather than a generic map for the entire route. This local customization ensures channel map validity for each specific location while the overall system maintains reduced communication overhead through advance provision of all necessary segment maps
Data Source
AI summary
A spectrum management server generates and an electronic device uses a channel map solution for a predetermined travel route of the electronic device. The channel map solution includes at least one available channel for each of the plural geographic areas through which the planned travel route passes. At least two adjacent ones of the geographic areas have different channel availability.