Single-User Multi-TID Aggregation for Wi-Fi Transmission Efficiency
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Solution Overview
Problem
Single-user (SU) transmissions in wireless communication systems lack the transmission efficiency and power consumption improvements afforded by utilizing multiple traffic identifiers (TIDs), limiting stations to transmit data units associated with a single access category.
Innovation Solution
Implementing a method and system for SU transmissions that allow the formation of aggregated data units with multiple TIDs by mapping traffic identifiers to different access categories, enabling contention for transmission opportunities and association with respective traffic identifiers, and determining whether to send the aggregated data unit as a single-user multiple traffic identifier data unit based on an aggregation rule.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If SU transmissions use a single TID associated with one access category, then the transmission protocol is simple and easy to implement, but transmission efficiency is limited and power consumption is higher
Solution Approach 1:
The patent merges multiple data units with different TIDs and access categories into a single aggregated A-MPDU frame. This allows the station to transmit multiple types of traffic (voice, video, best-effort, background) in one transmission opportunity, improving channel utilization and transmission efficiency without requiring separate TXOPs for each access category.
Solution Approach 2:
The patent enables the SU transmission mechanism to perform multiple functions by allowing a single TXOP to carry data units from multiple access categories. The aggregated frame structure provides universal compatibility with existing Wi-Fi protocols while extending functionality to support multi-TID transmissions, achieving both simplicity and efficiency.
2Use of energy by moving object
If SU transmissions are limited to a single access category per TXOP, then the transmission mechanism is simple, but the station must contend for multiple separate TXOPs to transmit different types of data, increasing power consumption
Solution Approach 1:
The patent combines multiple access category transmissions into a single aggregated frame, allowing the station to transmit voice, video, and data traffic in one TXOP. This eliminates the need to wake up and contend for multiple separate TXOPs, reducing power consumption while maintaining the ability to handle diverse traffic types.
Solution Approach 2:
The patent enables continuous transmission of multiple access categories within a single TXOP without requiring the station to release and re-acquire the channel. This continuous utilization of the transmission opportunity maximizes energy efficiency by keeping the radio active for a single, extended transmission rather than multiple short, fragmented transmissions.
3Productivity
If SU transmissions aggregate only data units with the same TID, then the aggregation process is simple and fast, but transmission efficiency is limited compared to MU transmissions that use multiple TIDs
Solution Approach 1:
The patent merges data units with different TIDs into a single aggregated A-MPDU frame, extending the aggregation capability beyond same-TID limitations. This allows the station to utilize the entire TXOP duration for transmitting diverse traffic types, significantly improving transmission efficiency and channel utilization.
Solution Approach 2:
The patent introduces dynamic aggregation rules that allow the station to adaptively include or exclude specific access categories based on current buffer status and QoS requirements. This dynamic approach enables flexible aggregation of up to four access categories (voice, video, best-effort, background) while maintaining control over transmission priorities and meeting QoS deadlines.
Data Source
AI summary
Disclosed herein are method, system, and computer program product embodiments for utilizing multiple traffic identifiers (TIDs) in a single user (SU) transmission. Some embodiments may operate by forming a SU multiple TID data unit that includes first data associated with a first access category and a first TID and second data associated with a second access category and a second TID. Some embodiments may further operate by transmitting the SU multiple TID data unit during a transmission opportunity based on configuration parameters associated with the transmission opportunity.