Per-AC Switching Timer for Wireless Medium Efficiency
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in switching from multiple user (MU) mode to single user (SU) mode due to the use of a single timer value for all access categories, leading to sub-optimal latency and medium efficiency, as it fails to account for varying delay sensitivity of different traffic types.
Innovation Solution
Implementing multiple timer values for different access categories (ACs) to enable timely switching to SU mode for delay-sensitive traffic while minimizing unnecessary switches for delay-tolerant traffic, thereby optimizing packet transmission and medium access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a single timer value is used for all access categories in MU mode, then device complexity is reduced and operation is simplified, but latency for delay-sensitive traffic increases and medium efficiency deteriorates
Solution Approach 1:
The patent segments the single timer value into multiple timer values, each associated with a specific access category (AC). This allows different timer values to be assigned to different traffic types (e.g., voice, video, best effort, background), enabling fine-grained control over switching behavior for each AC while managing complexity through structured organization.
Solution Approach 2:
The patent applies local quality by assigning different timer values to different access categories based on their specific delay sensitivity requirements. Delay-sensitive ACs (e.g., voice, video) receive shorter timer values for faster SU mode switching, while delay-tolerant ACs (e.g., background) receive longer timer values, optimizing performance locally for each traffic type.
2Productivity
If a single timer value is used for all access categories, then ease of operation is improved, but medium efficiency and resource allocation worsen
Solution Approach 1:
The patent introduces dynamic timer values that can be adjusted based on traffic conditions and access category requirements. The system can dynamically select appropriate timer values from a set of predefined values or adjust them adaptively, allowing the medium efficiency to be optimized in real-time while maintaining manageable operation through standardized procedures.
Solution Approach 2:
The patent changes the timer parameter from a single fixed value to multiple variable values associated with different access categories. This parameter change enables the system to adapt timer durations to match the delay sensitivity of different traffic types, thereby improving medium efficiency and resource allocation while maintaining operational simplicity through structured parameter management.
3Loss of time
If timer value is extended for delay-tolerant traffic, then medium efficiency is improved, but latency for delay-sensitive traffic increases
Solution Approach 1:
The patent segments the timer duration into multiple distinct values, each optimized for specific access category requirements. Delay-sensitive ACs are assigned shorter timer durations to minimize latency, while delay-tolerant ACs are assigned longer durations to improve medium efficiency. This segmentation resolves the contradiction by allowing different duration characteristics coexist within the same system.
Solution Approach 2:
The patent applies local quality by tailoring timer durations to the specific needs of each access category. Local optimization is achieved by assigning shorter timers to voice and video traffic where latency is critical, and longer timers to background traffic where medium efficiency is more important, thereby resolving the global contradiction through localized adaptations.
Data Source
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AI summary
Certain aspects of the present disclosure relate to timers used to control switching from SU to MU transmission modes. In some examples, a frame is generated having an indication of multiple timer values for one or more wireless devices to be used for switching from a multiple user (MU) mode to a single user (SU) mode. In other examples, when to switch from a MU mode to a SU mode is determined based on multiple timer values obtained from a frame, and one or more second frames are generated for transmission via the SU mode or the MU mode based on the determination.