Wireless LAN TXOP Sharing for Multi-STA P2P Frame Timing
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Solution Overview
Problem
Existing wireless LAN systems lack efficient methods for transmitting and receiving in enhanced triggered transmission opportunity (TXOP) sharing procedures, particularly for supporting multiple peer-to-peer communications and configuring frame durations within shared TXOPs.
Innovation Solution
A method and device that enable stations (STAs) to receive a trigger frame for TXOP sharing, transmit a response frame, and perform frame exchanges within allocated time durations, with the TXOP sharing mode subfield set to indicate the duration based on the end timing of the TXOP or frame exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional TXOP sharing procedures are used, then system simplicity is maintained, but efficiency of multiple P2P communications and bandwidth utilization is insufficient
Solution Approach 1:
The TXOP sharing procedure is segmented into distinct phases: AP initiates TXOP with trigger frame, AP allocates specific time durations to individual STAs within the TXOP, and each STA performs frame exchanges during its allocated time slot. This segmentation enables multiple P2P communications to occur concurrently or sequentially within a single TXOP, improving overall system productivity while maintaining manageable complexity through structured organization.
2Adaptability or versatility
If fixed frame duration is used, then timing synchronization is simplified, but adaptability to different communication requirements is reduced
Solution Approach 1:
The frame duration is made dynamic rather than fixed. The AP configures the duration of each frame based on the specific communication requirements and allocates time durations to different STAs within the TXOP. This dynamic duration configuration allows the system to adapt to varying communication needs (such as different data sizes, QoS requirements, or application scenarios) while the AP maintains control over the timing coordination, preventing excessive complexity from arising.
3Productivity
If enhanced TXOP sharing with multiple P2P communications is implemented, then bandwidth utilization improves, but timing coordination complexity increases
Solution Approach 1:
The AP performs preliminary actions by configuring the TXOP parameters and allocating time durations to multiple STAs before the actual frame exchanges occur. The trigger frame carries pre-configured information about which STAs can communicate, their allocated time slots, and duration settings. This preliminary configuration enables subsequent P2P communications to proceed efficiently without real-time coordination overhead, maximizing bandwidth utilization while minimizing timing coordination complexity during the actual data transmission phase.
Data Source
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AI summary
A method and a device for transmission or reception in an enhanced triggered transmission opportunity sharing procedure in a wireless LAN system are disclosed. The method performed by an STA in a wireless LAN system, according to one embodiment of the present disclosure, may comprise the steps of: receiving, from an AP, a trigger frame related to sharing of a TXOP; transmitting, to the AP, a response frame for the trigger frame; and, on the basis of the trigger frame, performing frame exchange with another STA in a time interval allocated to the STA. A TXOP sharing mode subfield included in the trigger frame can be set to a value indicating a TXOP sharing mode for allocating a time interval so that frame exchange is performed between the STA and the other STA. The duration of a frame transmitted in the time interval allocated to the STA can be set on the basis of an end point of the TXOP or an end point of the frame exchange.