Dual-mode Wireless LAN Interface for Secure Content Delivery
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Ad hoc mode in wireless LAN settings for Epidemic Routing in DTNs is vulnerable to security threats, has low communication speed, and inefficient resource utilization, particularly when dealing with a large number of terminals.
Innovation Solution
A communication terminal with dual-mode wireless LAN interface capabilities, allowing dynamic switching between ad hoc and infrastructure modes for control messages and content delivery respectively, enabling secure, high-speed, and efficient content sharing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If ad hoc mode is used for wireless LAN settings in Epidemic Routing, then peer-to-peer link capability and rapid session establishment are improved, but security performance and communication speed deteriorate
Solution Approach 1:
The patent dynamically switches between ad hoc mode and infrastructure mode based on the operational phase. During the discovery phase, ad hoc mode is used for rapid peer-to-peer link establishment. During the content delivery phase, infrastructure mode is activated to provide secure and high-speed communication. This dynamic mode switching resolves the contradiction by allowing each mode to operate in its optimal phase.
2Loss of time
If ad hoc mode is used for wireless LAN settings in Epidemic Routing, then rapid session establishment is improved, but communication speed deteriorates
Solution Approach 1:
The patent segments the communication process into two distinct phases: discovery phase and content delivery phase. The discovery phase uses ad hoc mode for rapid session establishment with minimal overhead. The content delivery phase uses infrastructure mode for high-speed data transmission. This segmentation allows each phase to utilize the most appropriate mode, resolving the speed-time contradiction.
3Adaptability or versatility
If ad hoc mode is used for wireless LAN settings in Epidemic Routing, then peer-to-peer communication capability is improved, but resource utilization efficiency deteriorates
Solution Approach 1:
The patent implements dynamic mode switching that adapts to the communication phase. Ad hoc mode provides the necessary peer-to-peer communication capability during discovery, while infrastructure mode optimizes resource utilization during content delivery. This dynamic adaptation resolves the contradiction between versatility and productivity by allowing each mode to excel in its appropriate phase.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A control message transmission/reception unit (112) sets a wireless LAN interface unit (116) at an ad hoc mode and exchanges control messages with other communication terminals via the wireless LAN interface unit (116), and a content transmission/reception unit (113), when requested to deliver a content, sets the wireless LAN interface unit (116) at an infrastructure mode, and delivers the content via the wireless LAN interface unit (116).