Temporary AID for Unassociated Stations in 802.11 Networks
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Solution Overview
Problem
Existing communication networks face inefficiencies in wireless communication methods, particularly for unassociated non-AP stations that lack an Association Identifier (AID), leading to low network efficiency and prolonged association procedures.
Innovation Solution
The method involves an unassociated non-AP station sending a first frame to an access point (AP), which responds with a multi-station block acknowledgment frame providing a temporary AID, allowing the unassociated station to participate in multi-user operations and accelerate the association process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If unassociated non-AP stations use traditional association procedures without temporary AID, then association reliability is maintained, but association time increases and network efficiency decreases
Solution Approach 1:
The patent applies preliminary action by providing a temporary AID to unassociated non-AP stations before the association procedure is complete. This allows stations to participate in multi-user operations during the association process, thereby reducing association time and improving network efficiency without compromising association reliability
2Productivity
If unassociated non-AP stations are excluded from multi-user operations, then association procedure reliability is maintained, but network resource utilization decreases
Solution Approach 1:
The patent uses a temporary AID as an intermediary identifier that allows unassociated non-AP stations to participate in multi-user operations. This temporary identifier enables network resource utilization while maintaining association procedure reliability, as the temporary AID can be revoked or updated upon successful association
3Productivity
If traditional single-user acknowledgment frames are used, then frame acknowledgment reliability is maintained, but network bandwidth efficiency decreases
Solution Approach 1:
The patent merges multiple acknowledgment functions into a single multi-station block acknowledgment frame that can acknowledge frames from multiple unassociated non-AP stations simultaneously. This improves bandwidth efficiency by reducing the number of acknowledgment frames transmitted while maintaining reliability through the comprehensive acknowledgment capability
Data Source
AI summary
Association procedure in 802.11 networks is bandwidth consuming because the management frames are sent in the low bitrate Single User mode. Multi-user operations are not available for unassociated stations because they are not assigned association identifiers. The present invention proposes to provide temporary AIDs to unassociated stations sending a frame to the AP, wherein the temporary AIDs are conveyed by a multi-station block acknowledgment. In an efficient scenario for station association, unassociated stations randomly access tone sets of a short feedback procedure. Based on the feedback responses, the AP subsequently provides MU UL RUs for the unassociated station to send a first management frame. Subsequently, the temporary AID may be used to schedule further MU UL RUs and to provide response in MU DL transmissions.