Wireless Communication Mode Setting for Post-NAN IP Address Assignment
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Solution Overview
Problem
Printing apparatuses with wireless LAN functions face challenges in establishing post-NAN connections for large data transmission, as they require separate wireless connections, which are not possible if IPv6 is disabled or if the opposing apparatus does not support post-NAN connections, hindering services like printing and scanning.
Innovation Solution
The implementation of an information processing apparatus with wireless communication capabilities that can operate in multiple modes, including a first mode for service notification and a second mode for IP address assignment, allowing for post-NAN communication regardless of the initial configuration, using IPv6 for P2P connections and enabling service execution even when IPv6 is disabled.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If IPv6 is disabled in the printing apparatus, then security is improved and device complexity is reduced, but post-NAN connection establishment fails and service functionality is lost
Solution Approach 1:
The patent introduces a mediator component that intercepts IP address assignment requests during post-NAN connection establishment. When IPv6 is disabled, the mediator automatically assigns IPv4 addresses as substitutes, ensuring that the connection establishment process succeeds without requiring IPv6 while maintaining simplified device configuration.
Solution Approach 2:
The system dynamically changes the IP address parameter based on the IPv6 enablement status. When IPv6 is disabled, the system switches from attempting IPv6 address assignment to IPv4 address assignment, allowing post-NAN connections to be established successfully without requiring IPv6 support while maintaining service functionality.
2Adaptability or versatility
If post-NAN connection is established using IPv6, then service functionality is improved, but adaptability is reduced because apparatuses that do not support post-NAN connections or have IPv6 disabled cannot connect
Solution Approach 1:
The printing apparatus is designed with multi-functionality to support both IPv6 and IPv4 address assignments during post-NAN connection establishment. The system first attempts IPv6 assignment for compatibility with modern apparatuses, and automatically falls back to IPv4 assignment when dealing with apparatuses that do not support post-NAN connections or have IPv6 disabled, thereby achieving universal compatibility across different device types and configurations.
Solution Approach 2:
The IP address assignment mechanism is made dynamic by implementing a fallback strategy. The system adaptively switches between IPv6 and IPv4 assignment methods based on the capabilities and configuration of the connecting apparatus, ensuring that connection establishment succeeds regardless of the opposing apparatus's IPv6 support status or post-NAN connection capability.
3Productivity
If multiple communication protocols are used for handover processing, then communication flexibility is improved, but processing time is increased due to the complexity of handover procedures
Solution Approach 1:
The patent implements preliminary action by pre-configuring the printing apparatus with multiple IP address assignment capabilities (IPv6 and IPv4) before the actual connection establishment process. When a post-NAN connection request is received, the system has already prepared both assignment methods and can immediately attempt IPv6 first, then quickly fallback to IPv4 if needed, significantly reducing the time required for connection establishment compared to configuring protocols during the handover process itself.
Data Source
AI summary
An information processing apparatus characterized by comprising: at least one wireless communication means capable of executing a plurality of communication modes that include a first communication mode in which the wireless communication means communicates information concerning a predetermined service to be provided to an external apparatus with the external apparatus; basic configuration means for deciding whether to assign an IP address used for a second communication mode different from the first communication mode to the wireless communication means; and communication mode setting means for setting the IP address for the wireless communication means regardless of a decision by the basic configuration means if the first communication mode is enabled.