AP Selective Data Storage for WLAN Power Management
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Solution Overview
Problem
Conventional APs fail to implement a deep sleep mode for WLAN clients due to broadcast and multicast data in Ethernet environments, preventing continuous power-saving operation.
Innovation Solution
The AP selectively stores data received during specific timing intervals, discards multicast or broadcast data during other intervals, and buffers them for transmission during designated periods, allowing the WLAN client to maintain a deep sleep mode by transmitting data only during optimized intervals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the AP continuously transmits broadcast and multicast data to WLAN clients, then data delivery reliability is improved, but power consumption of the WLAN client increases and prevents deep sleep mode
Solution Approach 1:
The patent implements periodic action by dividing data transmission into specific intervals (first and second time intervals) where broadcast/multicast data is transmitted only during designated periods while allowing deep sleep mode during other periods, thus achieving both reliable data delivery and power savings
2Use of energy by moving object
If the AP enables deep sleep mode for WLAN clients, then power consumption is reduced and idle time is extended, but continuous data delivery during all time intervals cannot be guaranteed
Solution Approach 1:
The patent applies segmentation by dividing the transmission time into multiple intervals (first and second time intervals) with different data delivery strategies, where each interval serves a specific purpose in balancing power savings and data delivery reliability
3Reliability
If the AP transmits data during all time intervals, then data transmission completeness is improved, but the idle time of WLAN devices cannot be extended
Solution Approach 1:
The patent implements periodic action by transmitting data during specific intervals rather than continuously, allowing WLAN devices to extend idle time while maintaining data transmission completeness for time-sensitive applications
Data Source
AI summary
A method and system or access point (AP) for performing a data transmission process supporting power management of wireless local area network (WLAN) clients comprises the steps of and means for performing the following functions, respectively: when data are received through a network, storing the data selectively, wherein the received data are not stored in a memory when a current operation timing is in a first timing interval, and the received data are stored in the memory when the current operation timing is in a second timing interval; generating a beacon frame after determining whether data to be transmitted to the WLAN clients are stored in the memory according to a beacon frame generation interval; transmitting the generated beacon frame to the WLAN clients every beacon interval; and, when the transmission of data stored in the memory during the second timing interval is requested from the WLAN clients, transmitting the appropriate data to the WLAN clients. As a result, power consumption by remote stations is minimized.