BSS Delay Evaluation for Wi-Fi Contention and Interference
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Solution Overview
Problem
Existing wireless communication networks, particularly Wi-Fi, struggle to evaluate delay performance effectively, especially for low-delay services like virtual reality and online gaming, due to interference and contention issues, which affect reliability and robustness.
Innovation Solution
A method and apparatus for evaluating delay performance by analyzing internal communication contention and external interference within a basic service set (BSS) using pre-acquired delay evaluation parameters, allowing for optimization of access strategies to support low-delay services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If CSMA/CA mechanism is used for channel access, then multi-station fair access and relatively large throughput are achieved, but low-delay service transmission requirements cannot be strictly guaranteed
Solution Approach 1:
The patent segments the delay into two distinct components: internal delay (within BSS) and external delay (from overlapping BSS interference). This segmentation allows separate evaluation and optimization of each delay source, enabling targeted access strategies for different service types while maintaining overall system throughput.
Solution Approach 2:
The patent changes the evaluation parameters by introducing specific delay measurement metrics (internal delay and external delay) and uses these parameters to dynamically adjust access strategies. This enables the system to adapt transmission parameters based on measured delay characteristics, guaranteeing low-delay services while maintaining throughput.
2Ease of operation
If PCF or HCF controlled channel access is introduced to achieve controlled service access capability, then certain degree of service access control is achieved, but reliability and robustness are greatly reduced when service access capability evaluation is interfered in operating frequency band
Solution Approach 1:
The patent implements feedback mechanisms by measuring internal and external delays and using these measurements to adjust access strategies. This closed-loop feedback enables reliable service access control by continuously monitoring delay performance and adapting control parameters, maintaining robustness even in interfered frequency bands.
Solution Approach 2:
The system performs self-evaluation of delay performance by having communication nodes measure their own internal and external delays. This self-service capability allows the network to autonomously assess service access capability and adjust control strategies without external intervention, maintaining reliability and robustness.
3Device complexity
If delay performance evaluation is not implemented, then system complexity is low, but optimization of access strategies for low-delay services cannot be achieved
Solution Approach 1:
The patent performs preliminary delay evaluation by measuring internal and external delays before making access decisions. This preliminary action provides the necessary information for optimizing access strategies for low-delay services, enabling the system to adapt to different service requirements without adding significant complexity during actual transmission.
Data Source
AI summary
Provided are a delay performance evaluation method and apparatus and a storage medium. The delay performance evaluation method includes evaluating, by a communication node, a delay performance involved in an internal communication environment of a basic service set (BSS) where the communication node is located according to pre-acquired delay evaluation parameters caused by internal communication contention or control of the BSS; and/or evaluating, by a communication node, a delay performance involved in an external interference of a BSS where the communication node is located according to pre-acquired delay evaluation parameters caused by the external interference of the BSS.