DTIM Interval Control for Mobile Power Save
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Solution Overview
Problem
Wireless local area networks face challenges in managing power save performance due to varying power saving strategies among diverse wireless devices, as different devices have different requirements for DTIM interval settings based on their usage patterns and capabilities, leading to inefficient wake-up frequencies and power consumption.
Innovation Solution
The implementation of automatic DTIM interval control, where a network device determines and dynamically adjusts the DTIM interval based on client sleep pattern metrics, device types, and current network conditions, allowing for optimal power save performance by matching APs' DTIM intervals to clients' power save profiles through steering, dynamic recalibration, or a hybrid approach.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If devices wake up frequently to check for buffered multicast/broadcast data, then network performance is maintained, but power consumption increases
Solution Approach 1:
The patent dynamically adjusts the DTIM interval based on client device characteristics, traffic patterns, and network conditions. The system transitions from a static, one-size-fits-all DTIM interval to a dynamic, adaptive mechanism that modifies wake-up frequencies in real-time to balance network performance and power consumption requirements.
Solution Approach 2:
The patent applies different DTIM interval settings to different client devices based on their specific power saving profiles, device types, and usage patterns. Each client receives a customized DTIM interval tailored to its local requirements, rather than a uniform setting for all devices in the network.
2Device complexity
If a fixed DTIM interval is used for all clients, then configuration is simple, but power save performance varies across different device types
Solution Approach 1:
The system automatically determines optimal DTIM intervals for each client device based on their characteristics and behavior patterns. The access point monitors client power saving profiles, device types, and usage patterns, then autonomously configures appropriate DTIM intervals without requiring manual intervention or complex user configuration.
Solution Approach 2:
The patent changes the DTIM interval parameter dynamically based on client-specific factors such as device type, power saving mode capabilities, traffic patterns, and usage behavior. This allows the system to adapt the time parameter to match different client requirements while maintaining a unified configuration mechanism.
3Productivity
If DTIM interval is shortened to accommodate active devices, then multicast/broadcast data delivery is improved, but devices with less active usage wake up more often than necessary
Solution Approach 1:
The patent implements location-specific (client-specific) DTIM interval settings where each device receives a customized wake-up frequency based on its activity level and power saving profile. Active devices receive shorter DTIM intervals for timely data delivery, while inactive devices receive longer intervals to minimize unnecessary wake-ups.
Solution Approach 2:
The system dynamically adjusts DTIM intervals in response to changing client activity patterns and network conditions. The access point monitors client behavior and modifies wake-up frequencies in real-time, transitioning from static to adaptive interval settings that respond to actual usage patterns.
Data Source
AI summary
The present disclosure discloses a method and network device for automatic delivery traffic indication message (DTIM) interval control for better mobile power save performance. The disclosed network device determines one or more characteristics for at least one client device connected to an Access Point (AP). The network device then dynamically selects a DTIM interval for the AP based on the characteristics for the at least one client device, and configures the AP to transmit a DTIM beacon frame at a frequency based on the dynamically selected DTIM interval. Alternatively, the network device can determine one or more characteristics for a client device, and dynamically select a Virtual Access Point (VAP) for providing network access to the client device based on the characteristics for the client device and a DTIM interval configured for the VAP, and then cause the client device to connect to the VAP.