Radio Wave Map Reply Generation for Communication Overhead Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing methods for providing radio wave maps to mobile objects, such as vehicles, require significant communication resources due to the need to transmit extensive route maps, which can lead to increased communication overhead and inefficiency.
Innovation Solution
A radio wave map providing device that reduces communication overhead by generating a radio wave map reply based on reference position information and communication quality information, optimizing the amount of data transmitted by selecting only the necessary information for communication scheduling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a radio wave map of the entire route is transmitted to the mobile object, then the mobile object can perform communication scheduling in advance considering fading, but the amount of communication required becomes enormous
Solution Approach 1:
The patent extracts only the necessary communication quality information from the complete radio wave map. Instead of transmitting the entire route map, the system identifies and transmits only the communication quality data for positions that are actually needed for scheduling decisions, thereby reducing communication overhead while maintaining scheduling capability
Solution Approach 2:
The patent applies local quality by providing different levels of information detail for different positions along the route. Rather than uniform information distribution, the system selectively provides communication quality information only for relevant positions based on the mobile object's schedule and routing information, optimizing the balance between information completeness and communication efficiency
2Adaptability or versatility
If a new radio wave map is provided each time the route changes, then the mobile object can adapt to new routes, but the amount of communication required for transmission and reception further increases
Solution Approach 1:
The patent uses preliminary action by pre-storing complete radio wave map information at the providing device. When route changes occur, the system can quickly generate updated maps by selectively extracting information for the new route without needing to re-measure or re-transmit complete route data, enabling rapid adaptation with minimal communication
Solution Approach 2:
The patent implements dynamics by making the information transmission adaptive to route changes. The system dynamically adjusts which communication quality information is transmitted based on the mobile object's current routing information and schedule, rather than transmitting fixed or complete route maps, thereby reducing communication overhead while maintaining adaptability
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A radio wave map providing device includes: a radio wave map storage (101) configured to store a radio wave map including reference position information indicating a reference position and reference communication quality information indicating a communication quality at the reference position; a receiver (102) configured to receive the radio wave map request including movement section information indicating a movement schedule section of the mobile object and request communication quality information indicating a requested communication quality; a radio wave map reply generation unit (106) configured to compare, in the reference communication quality information at the reference position in the movement schedule section, an information amount of reference communication quality information equal to or greater than the request communication quality information with an information amount of reference communication quality information equal to or less than the request communication quality information, and generate a radio wave map reply based on provision reference communication quality information that is the reference communication quality information having a smaller information amount and provision reference position information that is reference position information according to the reference communication quality information; and a transmitter (103) configured to transmit the radio wave map reply.