Wireless Terminal Latency Feedback for Real-Time WLAN Admission
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless LAN systems prioritize traffic using relative priority schemes like EDCA, which do not account for absolute latency and jitter requirements of real-time applications such as network games and industrial robots, making it difficult to determine if these applications can meet their performance criteria.
Innovation Solution
A terminal apparatus equipped with a measurement unit to measure latency and jitter, and a data processing unit to generate reports on these metrics, which are transmitted to an access point, allowing the system to assess whether absolute requirements are met.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If relative priority schemes like EDCA are used for traffic prioritization, then transmission priority is provided among different traffic types, but absolute latency and jitter requirements of real-time applications cannot be guaranteed
Solution Approach 1:
The patent implements a feedback mechanism where the terminal measures latency and jitter of transmitted wireless signals and reports these measurements to the access point. The access point uses this feedback information to determine whether to accept new real-time application requests or adjust access parameters, thereby ensuring that absolute latency and jitter requirements are maintained through continuous monitoring and adaptive control.
Solution Approach 2:
The patent performs preliminary measurement of latency and jitter characteristics of the wireless channel before accepting new real-time application requests. By measuring these parameters in advance and reporting them to the access point, the system can proactively determine whether the channel conditions satisfy the absolute requirements of new real-time applications, preventing acceptance of requests that would not be satisfied.
2Measurement precision
If measurement and reporting of latency and jitter is implemented, then information for determining requirement satisfaction is provided, but system complexity and overhead increase
Solution Approach 1:
The terminal apparatus performs self-measurement of latency and jitter parameters using its own transmission and reception capabilities. The terminal measures the latency of its own transmitted signals and the jitter of received signals from the access point, then autonomously generates and transmits measurement reports. This self-service approach eliminates the need for separate measurement devices or complex centralized measurement infrastructure.
Solution Approach 2:
The patent uses existing wireless communication frames and protocols as intermediaries to carry measurement data. Latency and jitter measurement results are embedded within standard wireless communication frames transmitted between the terminal and access point, leveraging the existing communication infrastructure rather than requiring separate dedicated measurement channels or protocols.
Data Source
AI summary
A terminal apparatus includes: a measurement unit configured to measure at least one of a latency when a wireless signal is transmitted to a access point and a jitter of the wireless signal; a data processing unit configured to generate information including a result of the measurement; and a wireless communication processing unit configured to transmit the information to the access point.