Wireless Terminal Channel Access via Load and Interference Feedback
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Solution Overview
Problem
In wireless communication systems, especially in environments with multiple mixed wireless local area network (WLAN) access points, existing technologies fail to efficiently distribute network load and manage inter-channel interference, leading to suboptimal network performance and resource utilization.
Innovation Solution
A method and terminal that use a distributed or centralized user association scheme to determine the most suitable radio channel access based on load information and inter-channel interference, allowing terminals to switch between access points and frequency bands to optimize resource efficiency and minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If terminals use traditional AP scanning and association methods, then terminals can connect to available APs, but network load is not efficiently distributed and inter-channel interference is not managed, leading to suboptimal network performance
Solution Approach 1:
The patent implements feedback mechanisms where terminals receive load information from APs via beacon frames and use this information to make intelligent association decisions. The system continuously monitors channel load amounts and inter-channel interference levels, then adjusts terminal associations dynamically based on this feedback, resolving the contradiction between maintaining connectivity and optimizing network performance.
Solution Approach 2:
The patent changes the parameter basis for AP association from traditional signal strength metrics to channel load amount and inter-channel interference information. By using different parameters (load information, interference levels) to guide association decisions, the system achieves better load distribution and interference management while maintaining network connectivity.
2Reliability
If terminals associate with nearest or strongest signal APs, then connection reliability is improved, but network load becomes concentrated on specific APs causing inefficiency
Solution Approach 1:
The patent applies local quality by making association decisions individualized to each terminal based on its specific reception of load information from different APs. Each terminal independently evaluates channel load amounts and inter-channel interference relevant to its location and conditions, rather than following a uniform association rule, thus achieving both reliable connections and efficient load distribution.
Solution Approach 2:
The patent introduces dynamics by enabling terminals to continuously monitor load information from APs and dynamically adjust associations based on changing network conditions. This dynamic behavior allows the system to maintain connection reliability while adapting to load variations, preventing concentration on specific APs and improving overall network efficiency.
3Adaptability or versatility
If multiple APs operate on overlapping channels, then channel availability increases, but inter-channel interference increases reducing overall network quality
Solution Approach 1:
The patent applies preliminary action by having terminals proactively acquire load information including inter-channel interference data before making association decisions. By obtaining this information in advance through beacon frames and scanning processes, terminals can select APs and channels that minimize interference while maintaining good availability, preventing interference problems rather than reacting to them.
Data Source
AI summary
Provided are a terminal and a method of accessing an access point (AP) by the terminal, in a wireless communication system. The method includes determining whether to maintain access to a currently accessed radio channel, based on load information of a currently accessed AP, determining a radio channel to be accessed, based on the load information of the AP near the terminal and channel interference information, and accessing the determined radio channel.