Wi-Fi Direct Group Communication Scheduling for Client State Changes
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Solution Overview
Problem
In Wi-Fi direct communication groups, group clients may temporarily stop data transmission due to changes in their operating state, leading to unnecessary power consumption by the group owner maintaining a communication channel.
Innovation Solution
An electronic device as a group client sends a schedule change request message to the group owner, adjusting the operation schedule based on its operating state changes, using peer-to-peer presence frames and beacon frames to facilitate communication channel changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the group owner maintains a communication channel in standby state to provide services, then service availability is improved, but power consumption increases
Solution Approach 1:
The group owner enters a sleep mode during periods when no data transmission is required, and wakes up periodically to check for pending data or service requests. This periodic activation allows the system to maintain service availability while significantly reducing power consumption during idle periods.
Solution Approach 2:
The group owner autonomously monitors its own operational state and automatically transitions between active and sleep modes based on data transmission requirements. The device can self-determine when to wake up for potential data reception without requiring continuous external signaling, thereby reducing power consumption while maintaining service readiness.
2Loss of energy
If the group client stops data transmission due to operating state changes, then energy efficiency is improved, but communication coordination becomes complex
Solution Approach 1:
The group client provides feedback to the group owner about its operational state changes, including when it enters sleep mode or stops data transmission. This feedback mechanism allows the group owner to adjust its behavior accordingly, such as waking up at appropriate times or modifying its transmission schedule, thereby maintaining energy efficiency while coordinating communication effectively.
Solution Approach 2:
The group client notifies the group owner in advance of upcoming state changes or sleep periods. This preliminary notification allows the group owner to prepare for potential data transmission interruptions and plan its operations accordingly, reducing the complexity of real-time coordination while maintaining energy efficiency.
Data Source
AI summary
An electronic device includes: a communication module; a memory; and at least one processor operatively connected to the communication module and the memory, wherein the at least one processor is configured to: control the communication module to generate a direct communication group in which an external electronic device operates as a group owner and the electronic device operates as a group client through a Wi-Fi direct connection with the external electronic device, to perform wireless communication; control the communication module to transmit, to the external electronic device, a schedule change request message requesting to change an operation schedule of the direct communication group, based on a change in an operating state, related to wireless communication through the direct communication group, of at least one of the at least one processor and the communication module; receive, through the communication module from the external electronic device, a response message including operation schedule information configured based on the schedule change request message; and control the communication module to perform wireless communication according to the operation schedule information of the response message received from the external electronic device.