AP MLD Identification Sharing for Seamless STA Mobility
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Solution Overview
Problem
Existing communication systems struggle with managing identification information for a predetermined station (STA) when multiple physically different access points (APs) collaborate to function as a logically single AP Multi-Link Device (AP MLD), particularly in the context of IEEE 802.11be standard and its successor standards, which aim to improve mobility and communication efficiency.
Innovation Solution
A communication apparatus is designed with an establishment unit to create connections, an assignment unit to assign identification information, and a sharing unit to manage this information across external access points, ensuring seamless identification and management of STAs across multiple APs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple physically different APs are caused to cooperate to function as a logically single AP MLD, then mobility and communication efficiency are improved, but identification management becomes complex and ambiguous
Solution Approach 1:
The patent merges the identification management functions of multiple physically different APs into a unified AID assignment system. When APs cooperate as an AP MLD, they share a common AID assignment mechanism where the serving AP (the AP that the STA is currently connected to) is responsible for assigning and managing AIDs for all STAs across the entire AP MLD group. This consolidation resolves the identification management complexity by eliminating duplicate AID assignments and ensuring consistent identification across all cooperating APs.
Solution Approach 2:
The serving AP performs multiple functions: it acts as the primary AID assignment authority for the entire AP MLD, manages identification information for all STAs connected to any AP in the group, and coordinates with other APs to ensure consistent identification management. This universal role of the serving AP simplifies the overall system by centralizing identification management while enabling the APs to function cooperatively as a single logical entity.
2Adaptability or versatility
If a single STA switches connection among multiple physically different APs, then mobility is enhanced, but processing efficiency decreases due to lack of identification consistency
Solution Approach 1:
The system performs preliminary AID assignment through the serving AP before the STA switches connections. When a STA connects to any AP in the AP MLD group, the serving AP pre-assigns an AID and stores the association between the STA's identification and the assigned AID. This preliminary action ensures that when the STA switches to a different AP within the group, the new AP can immediately retrieve the pre-assigned AID from the serving AP without needing to perform a new assignment, thus maintaining processing efficiency during mobility transitions.
Solution Approach 2:
The serving AP acts as an intermediary that maintains the central AID assignment database for the entire AP MLD group. When a STA switches between APs, the serving AP mediates the identification management by providing the assigned AID to the new serving AP. This intermediary role ensures consistent identification management across AP switches while maintaining high processing efficiency, as the AID assignment itself is performed only once by the original serving AP rather than repeatedly during each switch.
3Ease of operation
If multiple APs independently manage AID assignment, then each AP operates autonomously, but identification conflicts and throughput loss occur
Solution Approach 1:
The system implements feedback mechanisms where APs exchange information about AID assignments and STA connection status. The serving AP receives feedback from other APs in the group about which STAs are connected and provides feedback about AID assignments. This feedback loop ensures that all APs have consistent information about STA identifications and current connection states, preventing identification conflicts while maintaining the ability of each AP to operate autonomously within the coordinated framework of the AP MLD.
Data Source
AI summary
A communication apparatus includes an establishment unit configured to establish a connection with another communication apparatus, an assignment unit configured to assign identification information for identifying the other communication apparatus to the other communication apparatus with which the connection is established, and a sharing unit configured to share the identification information with an external access point, wherein, based on the sharing of the identification information with the communication apparatus, the external access point manages the other communication apparatus and the identification information in association with each other.