SSID-Specific DTIM Periods for Wireless Access Point Power Optimization
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Solution Overview
Problem
Current wireless access points can only store a single Delivery Traffic Indication Message (DTIM) period, leading to conflicting requirements for power consumption and communication throughput among different client devices in multiple wireless networks, as they all wake up for the same beacon frames, necessitating a single configuration that balances these competing needs.
Innovation Solution
Implementing SSID-dependent DTIM periods in wireless access points, allowing network managers to configure different DTIM periods for each service set identifier (SSID), enabling client devices to wake up for beacon frames at intervals tailored to their specific power-saving and communication requirements, thereby optimizing power consumption and throughput for each network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single DTIM period is configured for all SSIDs, then device complexity is reduced and ease of operation is improved, but power consumption optimization and communication throughput are compromised for devices with different requirements
Solution Approach 1:
The patent segments the unified DTIM period configuration into separate SSID-specific DTIM periods. Each SSID can now have its own customized DTIM period value, allowing devices in different wireless networks to wake up at different intervals based on their specific power-saving requirements. This segmentation resolves the contradiction by enabling fine-grained control while maintaining a relatively simple implementation through per-SSID configuration parameters.
Solution Approach 2:
The patent applies local quality by allowing different DTIM period values for different SSIDs based on local network requirements. Each wireless network can be optimized independently with appropriate DTIM periods tailored to the typical device characteristics and power-saving needs of devices in that specific network, rather than applying a uniform configuration across all networks.
2Device complexity
If a single DTIM period is configured for all SSIDs, then device complexity is reduced, but the ability to optimize power consumption for diverse device requirements deteriorates
Solution Approach 1:
The configuration is segmented into multiple independent DTIM period parameters, one for each SSID. This allows the access point to maintain relatively low complexity by using straightforward parameter storage and comparison logic, while simultaneously achieving high adaptability by supporting different DTIM periods for different wireless networks and their associated devices.
Solution Approach 2:
The patent changes the DTIM period parameter from a single unified value to multiple SSID-specific values. This parameter change enables the system to adapt to different power-saving requirements of devices in different networks while maintaining implementation simplicity through consistent parameter management approaches.
3Use of energy by moving object
If different DTIM periods are configured for different SSIDs, then power consumption optimization for specific devices is improved, but device complexity and configuration management increase
Solution Approach 1:
The patent implements local quality by configuring DTIM periods at the SSID level rather than globally. Each SSID can have its own optimized DTIM period value tailored to the specific power-saving needs of devices in that network. The access point manages this complexity through organized data structures that store and retrieve SSID-specific parameters efficiently.
Solution Approach 2:
The system undergoes parameter changes from a single DTIM period value to multiple SSID-specific DTIM period values. This enables fine-grained power consumption optimization for devices in different networks while managing complexity through systematic parameter organization and retrieval mechanisms in the access point.
4Ease of operation
If a single DTIM period is used for all networks, then configuration management is simplified, but communication throughput optimization for different network types deteriorates
Solution Approach 1:
The patent segments the DTIM period configuration into SSID-specific values, allowing different wireless networks to have optimized DTIM periods tailored to their specific throughput requirements. Networks requiring higher throughput can use shorter DTIM periods for more frequent wake-ups, while networks prioritizing power saving can use longer intervals, thus optimizing productivity for each network type.
Solution Approach 2:
The patent applies local quality by enabling different DTIM period configurations for different SSIDs based on their specific communication requirements. This allows networks with different throughput needs to be optimized independently, with each network's DTIM period configured to balance power consumption and throughput performance appropriately for its specific use case.
Data Source
AI summary
A single access point may manage two or more wireless networks, each having a network name. The access point may be configured to store delivery traffic indication message (DTIM) period values on a per network name basis. A processor of the access point may manage, on a per network name basis, timing of transmission of delivery traffic indication messages.