Ad Hoc Network Management Device for Reliable Multi-Hop Routing
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Solution Overview
Problem
In multi-hop communication systems, such as M2M systems, communication quality is often compromised due to traffic concentration, leading to suboptimal performance in applications requiring varying communication qualities like sound, image, and real-time data transmission.
Innovation Solution
A management device and system that obtain link information about communication devices and required transmission qualities to determine and establish reliable transmission paths, ensuring communication quality by specifying suitable ports and communication methods, and notifying devices for efficient data routing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If wireless terminal devices autonomously perform routing in a wireless ad hoc network, then network construction is immediate and infrastructure is not required, but communication quality is compromised due to traffic concentration in multi-hop communication
Solution Approach 1:
The patent introduces a management device as an intermediary that centrally manages communication paths in the wireless ad hoc network. This mediator collects link information from all terminal devices, determines optimal transmission paths considering communication quality requirements, and notifies devices of the determined paths, thereby resolving the contradiction between easy network construction and maintained communication quality
Solution Approach 2:
The patent changes the management approach from completely autonomous device-level routing to a hybrid model where a management device controls path selection based on link quality parameters. By monitoring communication quality parameters and dynamically determining paths, the system maintains high communication quality while preserving the infrastructure-less advantage of ad hoc networks
2Area of stationary object
If multiple communication devices relay information in multi-hop communication, then network coverage is extended, but communication quality deteriorates due to traffic concentration
Solution Approach 1:
The patent dynamically selects transmission paths based on link quality parameters collected from multiple communication devices. By evaluating communication quality metrics and choosing optimal paths, the system extends network coverage through multi-hop communication while preventing quality deterioration that would result from arbitrary path selection
Solution Approach 2:
The patent implements dynamic path determination where the management device continuously collects link information and adjusts transmission paths based on current communication quality conditions. This dynamic adaptation allows the network to maintain high quality communication across extended coverage areas by rerouting traffic away from congested or low-quality links
3Adaptability or versatility
If autonomous routing is performed by each wireless terminal device, then device independence is maintained, but communication quality cannot be ensured due to lack of centralized path management
Solution Approach 1:
The patent introduces a management device as a mediator that maintains device independence while ensuring communication quality. Terminal devices remain autonomous in their local operations but cooperate with the management device for path determination, allowing each device to maintain its independence while benefiting from centralized quality management
Solution Approach 2:
The management device performs multiple functions including collecting link information from various devices, determining optimal paths for different communication requirements, and notifying devices of path assignments. This multi-functional approach maintains device versatility while centrally managing communication quality across the diverse ad hoc network
Data Source
AI summary
A management device according to one mode of the present invention includes: a link information obtaining unit configured to, with respect to a plurality of communication devices capable of relaying information and capable of establishing communication connection with each other, obtain link information including communication connection relationship of each communication device and communication quality between the communication devices; a transmission information obtaining unit configured to obtain transmission information including specification information for specifying target information and required quality which is communication quality required for transmitting the target information; and a determination unit configured to search for a transmission path formed by the communication devices and capable of transmitting the target information while satisfying the required quality, on the basis of the link information obtained by the link information obtaining unit and the transmission information obtained by the transmission information obtaining unit.