Adjustable Leak Guard for Wireless Power Save
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Solution Overview
Problem
Wireless communication devices face inefficiencies in power management due to the inability to accurately determine when access points attempt to transmit packets during their power save mode, leading to increased power consumption and potential packet loss.
Innovation Solution
Implementing a system that adjusts the time period for delaying entry into power save mode based on link quality and sequence number analysis, where the device remains awake to prevent packet transmission from the access point, and uses indicators within physical layer protocol data units to determine if packets were attempted during the power save mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the wireless communication device delays entering power save mode to prevent packet loss, then packet delivery reliability is improved, but power consumption increases
Solution Approach 1:
The device performs preliminary actions by sending a notification frame to the AP before entering power save mode, and adjusts the time period based on link quality assessment. This allows the device to prepare for power save mode in advance while maintaining reliability through selective delay adjustment based on current communication conditions.
Solution Approach 2:
The leak guard time period is made dynamic and adjustable rather than fixed. The processing system adjusts the time period based on link quality metrics and communication patterns, allowing the device to optimize between power saving and packet delivery reliability adaptively according to real-time conditions.
2Use of energy by moving object
If the wireless communication device enters power save mode immediately, then power consumption is reduced, but packet loss increases
Solution Approach 1:
The device sends a notification frame to the AP as a preliminary action before entering power save mode. This notification allows the AP to coordinate transmissions and prevents the device from entering power save mode too early, thereby avoiding packet loss while still enabling power savings.
Solution Approach 2:
The system uses feedback from link quality assessment and communication patterns to adjust the leak guard time period. By monitoring communication conditions and adjusting the delay period accordingly, the system ensures reliable packet delivery while maximizing power savings opportunities.
3Reliability
If the leak guard time period is increased to prevent packet loss, then packet delivery reliability is improved, but wireless medium throughput decreases
Solution Approach 1:
The leak guard time period is adjusted dynamically based on link quality and communication patterns rather than using a fixed conservative value. This allows the system to minimize the time period when conditions permit, thereby improving wireless medium throughput while maintaining adequate packet delivery reliability.
Solution Approach 2:
The system changes the time period parameter adaptively based on measured link quality metrics and communication patterns. By adjusting this critical parameter according to actual conditions, the system optimizes the balance between packet delivery reliability and wireless medium throughput.
Data Source
AI summary
This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for adjusting a time period to delay entering a power save mode (leak guard) for wireless communications. In one aspect, a wireless communication device may adjust a time period to delay entering a power save mode. The time period is associated with the wireless communication device remaining awake to prevent an access point from transmitting to the wireless communication device while the wireless communication device is in the power save mode. The wireless communication device also may provide, to the AP, an indication that the wireless communication device is entering a power save mode, and the wireless communication device may enter the power save mode. Entering the power save mode is at least the adjusted time period after providing the indication to the AP.