Assisted SU Wireless Transmission With Explicit TXOP Ownership
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Solution Overview
Problem
Wireless devices face challenges in differentiating frame transmissions and determining the TXOP owner during frame exchanges, leading to errors and inefficient communication.
Innovation Solution
A device, such as an access point (AP), allocates part of a Transmission Opportunity (TXOP) to a station (STA) for various frame transmissions, with the AP or STA becoming the TXOP owner during the allocated time, and utilizes explicit indications and resource requests through HE Control fields to manage frame exchanges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If conventional wireless communication techniques are used, then devices can exchange frames, but devices cannot differentiate which frame transmission is being initiated by the AP or determine which device is the TXOP owner
Solution Approach 1:
The patent segments the TXOP into multiple allocated times, with each allocated time explicitly assigned to a specific device (AP or STA) as the TXOP owner. This segmentation allows clear differentiation of frame transmission responsibilities and eliminates ambiguity about which device initiated which transmission.
Solution Approach 2:
The patent applies different TXOP owner designations to different allocated times within the same TXOP. The AP may be the TXOP owner during one allocated time while a STA is the TXOP owner during another allocated time, allowing local optimization of frame exchange efficiency for different transmission types.
2Productivity
If the AP allocates part of the TXOP to the STA, then communication efficiency is improved, but the complexity of managing TXOP allocation and frame exchanges increases
Solution Approach 1:
The patent establishes TXOP allocation and TXOP owner designation in advance through the Trigger frame before frame exchanges occur. This preliminary action defines the rules for each allocated time, eliminating the need for complex real-time negotiations and reducing management complexity during actual frame exchanges.
Solution Approach 2:
The Trigger frame acts as an intermediary that carries the TXOP allocation information and TXOP owner designation from the AP to the STA. This intermediary structure simplifies the management complexity by providing a centralized mechanism for defining transmission parameters before frame exchanges begin.
3Ease of operation
If the STA becomes the TXOP owner during allocated time, then the STA can initiate frame exchanges autonomously, but the AP loses control over the frame exchange process
Solution Approach 1:
The patent makes the TXOP owner designation dynamic, allowing it to change between different allocated times. The AP can be the TXOP owner during some allocated times while the STA is the TXOP owner during other allocated times, providing flexibility and adaptability in frame exchange control.
Solution Approach 2:
The patent structures frame exchanges as periodic actions with distinct allocated times, where the TXOP owner designation is reassigned for each allocated time according to the Trigger frame specifications. This periodic structure allows the STA to have autonomous control during its allocated times while the AP regains control in subsequent allocated times.
Data Source
AI summary
Embodiments of a device, a system, and a method for wireless communications are disclosed. In an embodiment, a device includes a processor configured to initiate an assisted single-user (SU) transmission, where the device is a Transmission Opportunity (TXOP) owner that allocates part of a TXOP, and exchange frames according to the assisted SU transmission.