Multi-Link Power Save Indication for Independent Link Power States
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Solution Overview
Problem
The existing IEEE 802.11 standard lacks efficient mechanisms for power management in multi-link operations, as the PM and EOSP bits are not enhanced to allow independent power management modes per link, leading to inefficient power save operations and synchronized end-of-service periods across multiple links.
Innovation Solution
A multi-link power save indication system using a link bitmap in frames to manage power states independently for each link, allowing different end-of-service periods and enabling efficient power save operations across multiple links.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the PM and EOSP bits are used for power management in multi-link operations, then power save mode can be indicated, but independent power management per link cannot be achieved and end-of-service periods are synchronized across all links
Solution Approach 1:
The patent segments the power management indication by introducing a link bitmap field that individually identifies each link. This allows the PM and EOSP bits to be independently applied to specific links rather than forcing synchronized power management across all links, thereby achieving independent power management per link while maintaining the existing bit structure.
Solution Approach 2:
The patent adds a new dimension to power management by introducing the link bitmap field that maps power management parameters to specific links. This dimensional extension allows selective application of power save mode and end-of-service period indicators to individual links, resolving the contradiction between adaptability and complexity.
2Productivity
If synchronized end-of-service periods are used across multiple links, then power management is simplified, but power save operation efficiency is reduced due to inability to optimize per-link service periods
Solution Approach 1:
The link bitmap field segments the end-of-service period indication by allowing different EOSP bit values for different links. This enables asynchronous end-of-service periods where each link can be independently controlled, improving power save operation efficiency by optimizing service periods per link rather than forcing synchronization.
Solution Approach 2:
The patent applies local quality by allowing each link to have its own power management characteristics through the link bitmap. Each link can be individually configured with appropriate power save modes and end-of-service periods based on its specific traffic patterns and requirements, thereby improving overall power save efficiency without requiring complex centralized control.
Data Source
AI summary
This disclosure describes systems, methods, and devices related to multi-link power save indication. A device may establish two or more links with a non-access point (AP) multi-link device (MLD). The device may connect a first AP of the AP MLD to a first station device (STA) of the non-AP MLD using a first link. The device may connect a second AP of the AP MLD to a second STA of the non-AP MLD using a second link. The device may use a link bitmap field included in a frame, wherein the link bitmap field comprises a first bit associated with the first STA and a second bit associated with the second STA. The device may communicate with the non-AP MLD based on the link bitmap.