TWT Session Setup Within Fast BSS Transition Frames
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently transitioning between Basic Service Sets (BSSs) during fast transitions, leading to inefficiencies in establishing Target Wake Time (TWT) sessions, which can delay power-saving states and increase network overhead.
Innovation Solution
A wireless communication device initiates TWT session establishment during a fast BSS transition by including a resource information container (RIC) in a frame, which can convey TWT requests along with other resource requests, such as TSPEC or block acknowledgment (BA) setup requests, to streamline the transition process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If TWT session establishment is conducted separately after fast BSS transition, then security and QoS exchanges can be completed, but TWT session establishment time is delayed and additional frame exchanges are required
Solution Approach 1:
The patent combines TWT session establishment with fast BSS transition by integrating the TWT request into the reassociation frame. This merging eliminates the need for separate frame exchanges, allowing both security/QoS exchanges and TWT session establishment to occur simultaneously during the transition process, thereby reducing overall establishment time while maintaining reliability
Solution Approach 2:
The patent performs TWT session establishment as a preliminary action during the fast BSS transition process itself, rather than waiting for the transition to complete. By initiating TWT request inclusion in the reassociation frame, the system establishes TWT sessions before the transition is fully complete, reducing subsequent delays and optimizing power-saving state transitions
2Adaptability or versatility
If multiple frame exchanges are used for TWT session establishment, then parameter negotiation can be thorough, but network overhead increases
Solution Approach 1:
The patent merges multiple communication exchanges into a single reassociation frame by including the TWT request within it. This consolidation maintains comprehensive parameter negotiation capabilities while reducing the total number of frames exchanged, thereby decreasing network overhead and optimizing resource utilization during fast BSS transition
3Adaptability or versatility
If TWT parameters are negotiated after transition completion, then all transition information is available, but power-saving state transitions are delayed
Solution Approach 1:
The patent performs TWT parameter negotiation as a preliminary action during the fast BSS transition process by including the TWT request in the reassociation frame. This allows the system to obtain necessary transition information and establish TWT sessions simultaneously, rather than waiting for transition completion, thereby reducing power-saving state transition delays while maintaining adaptability
Data Source
AI summary
This disclosure provides wireless communication methods, components, devices and systems for target wake time (TWT) session establishment. In some examples, a wireless communication device can include, in a frame that it transmits in conjunction with a fast basic service set (BSS) transition, a resource information container (RIC) containing a resource request that indicates a set of proposed TWT parameters for a TWT session between the wireless communication device and a target access point (AP) of the fast BSS transition. In some examples, the RIC can additionally include resource request(s) indicating traffic specification (TSPEC) traffic stream setup request(s), block acknowledgment setup request(s) or a combination of both. In some examples, the wireless communication device can include multiple TWT requests in the RIC, optionally in combination with one or more TSPEC resource requests, one or more block acknowledgment resource requests or a combination of both.