Wireless LAN Access Control for Low-Latency Data Prioritization
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Solution Overview
Problem
In wireless LAN systems, data requiring shorter latency often cannot be preferentially transmitted due to random access control delays, leading to issues with data prioritization and unfairness in transmission order, especially for real-time applications.
Innovation Solution
A communication device and method that estimates and determines a predetermined transmission capacity at each interval, allowing preferential transmission of data with specific attributes such as real-time applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If random access control is used for data transmission in wireless LAN systems, then any communication device can transmit data after a predetermined random transmission waiting time, but data requiring low latency cannot be prioritized effectively and experiences transmission delays
Solution Approach 1:
The patent applies preliminary action by having communication devices estimate transmission capacity in advance and determine predetermined transmission capacities before actual data transmission occurs. The control unit calculates expected transmission capacities based on current channel conditions and stores this information, so that when data needs to be transmitted, the device can immediately use the pre-determined capacity information to prioritize low-latency data without waiting for real-time capacity assessment.
Solution Approach 2:
The patent implements dynamics by making the transmission capacity estimation adaptive and variable. The control unit continuously estimates transmission capacity based on current network conditions and adjusts the predetermined transmission capacities accordingly. This dynamic adjustment allows the system to optimize latency performance under varying channel conditions while maintaining the simplicity of random access control.
2Speed
If data transmission capacity is increased to reduce latency, then real-time application data can be transmitted faster, but the transmission burden on the communication device and network increases
Solution Approach 1:
The patent applies partial action by determining predetermined transmission capacities that are optimized for low-latency data rather than maximizing total transmission capacity. The control unit calculates transmission capacities based on actual channel conditions and only allocates capacity when needed for prioritized data transmission. This partial application of capacity increases speed for critical data without unnecessarily increasing overall transmission burden.
3Reliability
If transmission capacity is estimated and predetermined transmission capacities are determined, then data prioritization is improved, but the control complexity of the communication device increases
Solution Approach 1:
The patent implements self-service by having the control unit automatically estimate transmission capacity and determine predetermined capacities without external intervention. The control unit monitors its own transmission conditions, calculates appropriate capacities, and manages prioritization internally. This self-service approach improves reliability through adaptive capacity management while minimizing the need for complex external control mechanisms.
Data Source
AI summary
A communication device that includes a control unit that performs control to estimate a transmission capacity to repeatedly transmit data of a specific attribute by a predetermined amount of information at each of a plurality of predetermined transmission intervals, and determine, in a case where a transmission opportunity is acquired by random access control with another communication device, a predetermined transmission capacity to be transmitted according to an elapsed time of a predetermined transmission interval, and transmit the data of the specific attribute.