TWT Identifier Subfield for Independent Schedule Suspension
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Solution Overview
Problem
Current target wake time (TWT) mechanisms struggle to efficiently manage and prioritize latency-sensitive traffic in artificial reality systems, leading to issues like motion sickness due to latency between user movement and image rendering, as they often require waiting for service periods of broadcast TWT schedules to suspend or resume specific schedules.
Innovation Solution
The introduction of a device with processors that generate frames with specific TWT identifier subfields to suspend or resume TWT schedules independently of service periods, allowing for the identification and management of specific broadcast TWT schedules, enabling separate and independent control of Restricted TWT schedules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the system waits for service periods to suspend or resume broadcast TWT schedules, then the existing TWT mechanism can be used, but latency increases and productivity decreases
Solution Approach 1:
The patent applies preliminary action by allowing the suspending device to initiate TWT schedule suspension before the actual service period begins. The device sets the TWT identifier subfield in advance, enabling the receiver to prepare for suspension without waiting for the service period to start, thus reducing latency and improving traffic prioritization efficiency.
Solution Approach 2:
The patent introduces dynamics by enabling independent control of TWT schedule suspension and resumption operations. The system can dynamically suspend specific broadcast TWT schedules identified by TWT identifier subfields without being constrained by fixed service period boundaries, allowing flexible real-time adjustment of traffic prioritization based on current needs.
2Adaptability or versatility
If the system uses broadcast TWT schedules for traffic management, then power saving is achieved, but inability to suspend independently reduces adaptability
Solution Approach 1:
The patent applies segmentation by dividing the broadcast TWT schedule into identifiable segments using TWT identifier subfields. This allows the system to suspend specific segments (particular TWT schedules) independently from the overall broadcast schedule, providing flexible adaptability while maintaining the power-saving benefits of broadcast-based management.
Solution Approach 2:
The patent introduces local quality by enabling selective suspension of specific TWT schedules identified by their TWT identifier subfields. Instead of suspending all broadcast TWT schedules uniformly, the system can apply localized suspension to specific schedules based on their identifiers, providing differentiated control while preserving energy efficiency.
3Measurement precision
If the system manages all TWT schedules uniformly, then device complexity is reduced, but inability to prioritize specific schedules worsens measurement precision
Solution Approach 1:
The patent applies local quality by introducing TWT identifier subfields that enable differentiation between specific TWT schedules. This allows the system to measure and manage latency precision for specific scheduled traffic types while maintaining a relatively simple overall management structure based on broadcast messages.
Solution Approach 2:
The patent uses TWT identifier subfields as intermediaries that carry specific schedule information within broadcast frames. These intermediary fields enable precise identification and measurement of specific TWT schedules without requiring complex direct management mechanisms, bridging the gap between simplicity and precision.
Data Source
AI summary
A device may include one or more processors. The one or more processors may generate a first frame including a first target wake time (TWT) identifier subfield. The one or more processors may determine whether a particular broadcast TWT schedule is to be suspended. The one or more processors may set, in response to determining that the particular broadcast TWT schedule is to be suspended, the first TWT identifier subfield to a particular identifier value identifying the particular broadcast TWT schedule, such that a receiver device receiving the first frame with the first TWT identifier subfield is to suspend the particular TWT schedule. The one or more processors may wirelessly transmit, via a transmitter, the generated first frame to the receiver device.