Fast BSS Transition With Integrated Block Acknowledgment Setup
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in basic service set (BSS) transitions due to the need for separate block acknowledgment (BA) negotiations during fast BSS transitions, which increase latency and packet losses, especially in applications with strict deterministic and low latency requirements like augmented reality (AR)/virtual reality (VR).
Innovation Solution
The enhanced fast BSS transition system integrates block acknowledgment (BA) negotiation into the reauthentication and reassociation frames, allowing simultaneous BA negotiation for multiple traffic identifiers (TIDs) during the FT protocol, thereby reducing the need for separate ADDBA request/response frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate ADDBA request/response frames are used for block acknowledgment negotiation during fast BSS transition, then BA negotiation can be performed, but latency increases and packet losses occur
Solution Approach 1:
The patent merges the ADDBA (Add Block Acknowledgement) negotiation process with the FT (Fast BSS Transition) protocol by integrating ADDBA request and response elements into the reauthentication and reassociation frames. This combination allows block acknowledgment negotiation to occur simultaneously with the BSS transition process, eliminating the need for separate ADDBA frame exchanges and thereby reducing transition latency while maintaining negotiation reliability
Solution Approach 2:
The patent performs BA (block acknowledgment) negotiation parameters setup in advance during the reauthentication and reassociation phases of the FT protocol, before actual data transmission begins. By pre-establishing the ADDBA elements and negotiation results during the transition process itself, the system avoids subsequent delays and ensures smooth transition with minimal packet losses
2Adaptability or versatility
If separate ADDBA request/response frames are used for block acknowledgment negotiation, then BA parameters can be exchanged, but the number of protocol steps increases
Solution Approach 1:
The patent combines multiple protocol functions into a single integrated process by embedding ADDBA negotiation elements within the FT reauthentication and reassociation frames. This merging reduces the total number of protocol steps while preserving the ability to configure diverse BA parameters for multiple TIDs (traffic identifiers), thus maintaining adaptability without increasing complexity
Solution Approach 2:
The reauthentication and reassociation frames in the FT protocol are enhanced to serve dual purposes: both completing the BSS transition function and performing ADDBA negotiation simultaneously. This multi-functionality allows a single frame exchange to accomplish what previously required separate dedicated frames, reducing protocol step count while maintaining comprehensive BA parameter exchange capabilities
Data Source
AI summary
This disclosure describes systems, methods, and devices related to enhanced fast BSS transition. A device may determine a need to transition to a target access point (AP) from a current AP. The device may send an authentication request frame to be sent to the target AP to perform a fast basic service set (BSS) transition (FT). The device may identify an authentication response frame received from the target AP comprising an add block acknowledgment (ADDBA) element. The device may establish a session and data transmission with the target AP.