Sleep Mode Power Saving via Session Delegation to Gateway
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Solution Overview
Problem
Information processing devices in local environments face inefficiencies in power-saving due to frequent mode changes when maintaining periodic connections with servers over firewalls, leading to reduced power-saving effects, especially when multiple devices are involved.
Innovation Solution
An information processing device and system that includes a session management component to establish and maintain periodic connections with a server, a power controller to enter sleep mode, and a substitute request mechanism to delegate periodic communication tasks to another device on the local network, thereby reducing the need for individual devices to constantly switch between normal and sleep modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the information processing device enters sleep mode to save power, then power consumption is reduced, but the periodic communication with the server cannot be maintained and the session may be terminated
Solution Approach 1:
The patent introduces a gateway device as an intermediary between the information processing device and the server. The gateway maintains the periodic communication and session with the server on behalf of the information processing device when it is in sleep mode, allowing the device to save power while keeping the session active through the gateway's periodic communications.
Solution Approach 2:
The patent separates the communication maintenance function from the information processing device itself by delegating it to a gateway device. This segmentation allows the information processing device to focus on power-saving operations while the gateway handles session maintenance, resolving the contradiction between power consumption and session reliability.
2Reliability
If the information processing device wakes up at predetermined time intervals to maintain periodic communication, then the session with the server is maintained, but the duration of sleep mode is shortened and power-saving effect is reduced
Solution Approach 1:
The gateway acts as an intermediary that takes over the periodic communication task, allowing the information processing device to remain in sleep mode for longer durations. The gateway's periodic communications maintain the session without requiring the information processing device to wake up frequently, thus preserving power-saving effects while maintaining session reliability.
3Reliability
If multiple information processing devices are installed in the local environment, then communication redundancy is improved, but each device individually waking up for periodic communication results in less efficient power-saving
Solution Approach 1:
The patent merges the periodic communication function for multiple information processing devices into a single gateway device. Instead of each device independently waking up to maintain its own session, the gateway consolidates these communications, maintaining sessions for multiple devices while requiring only one device (the gateway) to perform periodic communications, thereby improving overall power efficiency while maintaining communication redundancy.
Data Source
AI summary
An information processing device that communicates with a server on Internet over a local network, having: a session establishing part that establishes a session that enables a communication with said server over said local network; a periodic communicating part that establishes periodic communications at a predetermined time interval with said server to maintain said session; a power controller that stops a power supply to said periodic communicating part if a predetermined condition to enter sleep mode is met; and a substitute requesting part that requests another device installed on said local network to establish the periodic communication with said server that should be established by said periodic communicating part for said periodic communicating part when said power controller enables said information processing device to enter sleep mode.