Direct Wireless Frequency Band Switching for Reliable Peer Links
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Solution Overview
Problem
Apparatuses capable of supporting both the 2.4 GHz and 5 GHz frequency bands often fail to communicate suitably in direct wireless communication with counterpart devices.
Innovation Solution
An information processing apparatus with a processor and memory that sets operation settings for direct wireless communication, allowing negotiation or fixed operation as an access point, and selects a frequency band for communication based on user input, enabling suitable communication in either the 2.4 GHz or 5 GHz band.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an apparatus supports both 2.4 GHz and 5 GHz frequency bands for direct wireless communication, then communication versatility is improved, but communication reliability deteriorates because the apparatus cannot communicate suitably with counterpart apparatuses
Solution Approach 1:
The patent applies parameter changes by dynamically switching the operating frequency band between 2.4 GHz and 5 GHz based on the operational mode. When operating as a group owner, the apparatus uses the 5 GHz band for direct wireless communication, while when operating as a client, it uses the 2.4 GHz band. This parameter change resolves the contradiction by ensuring reliable communication in each specific role rather than attempting to support both bands simultaneously in all modes.
2Ease of operation
If an apparatus automatically negotiates to determine access point role in direct wireless communication, then ease of operation is improved, but device complexity increases due to negotiation protocols
Solution Approach 1:
The patent applies inversion by reversing the conventional approach: instead of using complex negotiation protocols to determine roles, the apparatus uses fixed role assignments based on operational modes. The group owner mode is hardcoded to use 5 GHz band, and client mode is hardcoded to use 2.4 GHz band. This eliminates the need for complex role negotiation while maintaining ease of operation, as the system automatically selects the appropriate mode and corresponding frequency band without negotiation overhead.
Data Source
AI summary
An information processing apparatus includes a processor and a memory. The memory stores instructions for causing the processor and the memory to set an operation setting related to a direct wireless communication function to a first operation setting with which a negotiation is performed with the counterpart apparatus for determining which one is to be operated as an access point or to a second operation setting with which the information processing apparatus operates as the access point without the negotiation, as a second setting, set a frequency band used in the direct wireless communication by receiving an operation from a user, and control, when the first operation setting is set, to use any one of the plurality of frequency bands for the direct wireless communication, and when the second operation setting is set, to use the frequency band set by the second setting for the direct wireless communication.