Shared AP Frequency Coordination for Multi-AP Resource Allocation
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Solution Overview
Problem
In IEEE 802.11be wireless networks, the lack of subchannel availability information at relay stations and associated stations in relay and multi-AP systems hinders efficient resource allocation, leading to suboptimal utilization of transmission opportunities.
Innovation Solution
Implementing techniques for relay stations and shared APs to provide coordinated frequency resource availability information, such as subchannel availability, to access points, allowing for more efficient allocation of resources in relay and multi-AP systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If relay stations and shared APs operate without coordinated subchannel availability information, then device complexity is reduced, but resource utilization efficiency deteriorates
Solution Approach 1:
The patent introduces a coordination mechanism where relay stations and shared APs exchange subchannel availability information through defined message protocols. This intermediary information exchange enables centralized resource allocation decisions without requiring complex distributed coordination among all devices, thus improving resource utilization while controlling system complexity.
Solution Approach 2:
The patent implements feedback loops where relay stations report subchannel availability status to APs, and APs provide allocation decisions back to relay stations and STAs. This feedback mechanism enables dynamic resource optimization based on real-time channel conditions, resolving the contradiction between maintaining simplicity and achieving high resource utilization.
2Reliability
If the AP allocates DL/UL resources without knowing subchannel availability at dSTAs, then information exchange overhead is reduced, but transmission reliability deteriorates
Solution Approach 1:
The patent implements preliminary action by having relay stations report subchannel availability information to the AP before the AP makes resource allocation decisions. This advance information provision ensures the AP has complete knowledge of dSTA subchannel availability when allocating DL/UL resources, thereby ensuring transmission reliability without requiring complex real-time information exchange during transmission.
3Productivity
If sharing AP does not obtain subchannel availability information from shared AP, then communication overhead is reduced, but TXOP scheduling efficiency deteriorates
Solution Approach 1:
The patent introduces an intermediary information exchange mechanism where the shared AP provides subchannel availability information to the sharing AP through defined message protocols. This intermediary information flow enables the sharing AP to make informed TXOP scheduling decisions that coordinate with the shared AP's subchannel availability, thereby improving scheduling efficiency while managing communication overhead through structured information exchange.
Data Source
AI summary
An embodiment is a method performed by a shared access point (AP) to provide coordinated frequency resource information to a sharing AP. The method includes obtaining frequency resource availability information for one or more stations (STAs) that are associated with the shared AP, generating the coordinated frequency resource information based on aggregating the obtained frequency resource availability information for the one or more STAs and frequency resource availability information for the shared AP, generating a control frame that includes an aggregated control (A-control) field that includes the coordinated frequency resource availability information, and transmitting the control frame to the sharing AP.