Controller TXOP Sharing for Non-TXOP Latency-Sensitive Traffic
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Solution Overview
Problem
Non-TXOP holder devices in wireless networks face challenges in transmitting latency-sensitive traffic during a TXOP period granted to a TXOP holder device, as they must wait for the next opportunity, leading to inefficiencies in data transmission.
Innovation Solution
A TXOP holder device identifies a first portion of the TXOP period for its own transmissions and determines a remaining portion available for other devices, transmitting an availability indication to allow non-TXOP devices to use this portion for their low-latency data transmissions, based on responses and priority considerations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a TXOP holder device transmits during the entire TXOP period, then the TXOP holder device achieves high transmission efficiency, but non-TXOP devices experience increased latency for their traffic
Solution Approach 1:
The TXOP period is divided into multiple portions: a first portion allocated to the TXOP holder device for its transmissions, and a remaining portion allocated to non-TXOP devices for latency-sensitive traffic. This segmentation allows both the TXOP holder and non-TXOP devices to transmit simultaneously in different time slots, resolving the contradiction between TXOP holder transmission efficiency and non-TXOP device latency.
2Reliability
If non-TXOP devices wait for the next TXOP opportunity to transmit, then collision avoidance is maintained, but transmission latency increases
Solution Approach 1:
The TXOP holder device preliminarily determines and announces the availability of the remaining TXOP period to non-TXOP devices before the TXOP period ends. This allows non-TXOP devices to prepare and transmit their latency-sensitive traffic in the remaining portion without waiting for the next TXOP opportunity, reducing latency while maintaining collision avoidance through controlled access.
3Loss of time
If the TXOP period is shared with non-TXOP devices, then latency-sensitive traffic transmission is improved, but TXOP holder device transmission time is reduced
Solution Approach 1:
The system dynamically adjusts the duration of the first portion and remaining portion of the TXOP period based on traffic conditions. When non-TXOP devices have latency-sensitive traffic, the remaining portion is extended; when TXOP holder device has urgent traffic, the first portion is extended. This parameter adjustment resolves the contradiction by flexibly allocating time resources based on real-time needs.
Data Source
AI summary
Technical solutions include systems and methods for transmission opportunity (TXOP) sharing for latency sensitive traffic of non-TXOP holder devices within a TXOP. A first device granted a TXOP can identify a first portion of a TXOP for a transmission of the first device. The first device can determine that a remaining portion of the TXOP subsequent to the first portion is available for data transmissions of other devices. The first device can transmit, to the other devices, an indication of availability of the remaining portion of the TXOP. The first device can allocate, responsive to one or more responses to the indication, the remaining portion of the TXOP to a second device of the one or more other devices to transmit data of the second device during the remaining portion of the TXOP period.