Station TXOP Utilization for Wireless Data Transmission
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Solution Overview
Problem
In IEEE 802.11 standard-based wireless local area networks, channel resources are wasted and data transmission efficiency is low because the channel is directly released after transmission of data from an access category (AC) is completed, even if there is remaining time in the transmission opportunity (TXOP).
Innovation Solution
A method where a station transmits data from a primary AC within a TXOP, and if there is remaining time, it transmits data from one or more secondary ACs, optimizing the use of the TXOP by determining priority sequences and aggregating data to ensure efficient data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the channel is released after transmission of data from an access category (AC) is completed, then the transmission process is simple and clear, but channel resources are wasted and data transmission efficiency is low
Solution Approach 1:
The patent applies the continuity of useful action principle by enabling the station to continuously transmit data from multiple access categories (ACs) within a single TXOP. Instead of releasing the channel after completing transmission from one AC, the station checks for remaining time and transmits data from secondary ACs, ensuring the transmission action continues without interruption and fully utilizing the allocated channel resource.
Solution Approach 2:
The patent implements dynamics by making the transmission process adaptive based on remaining TXOP time. The station dynamically adjusts its behavior: if time remains after transmitting primary AC data, it transitions to transmitting secondary AC data; if no time remains, it releases the channel. This dynamic adjustment optimizes channel utilization based on real-time conditions.
2Productivity
If the station transmits data from multiple ACs within remaining TXOP time, then channel resource utilization is improved, but the transmission control complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the transmission process into distinct stages based on AC priority. Primary AC data transmission is performed first, followed by secondary AC data transmission only if time remains. This segmentation simplifies control logic compared to managing all ACs simultaneously, as each AC group has a defined transmission sequence and condition.
3Productivity
If the station checks for remaining TXOP time and transmits secondary AC data, then data transmission efficiency is improved, but the transmission delay for secondary AC data increases
Solution Approach 1:
The patent changes the transmission parameter from single-AC to multi-AC within the same TXOP. By modifying the transmission scope parameter to include secondary ACs when time permits, the system improves overall efficiency without fundamentally changing the transmission mechanism, thus balancing efficiency gains with acceptable delay increases for secondary AC data.
Data Source
AI summary
Embodiments of the present invention provide a data transmission method and a station. The method includes: transmitting, by a station, data of a primary access category (AC) of the station within a current transmission opportunity (TXOP), where to-be-transmitted data of the station includes the data of the primary AC and data of at least one secondary AC; after transmission of the data of the primary AC is completed, determining, by the station, whether there is remaining time in the TXOP; and if there is remaining time in the TXOP, transmitting, by the station, the data of the at least one secondary AC within the remaining time. According to the method provided in the embodiments of the present invention, the current TXOP is fully utilized without a channel resource wasted, thereby improving data transmission efficiency of the station.