Wireless Access Point Association Limitations for Load Balancing
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Solution Overview
Problem
In wireless communication systems, especially in areas with numerous terminal devices, access points often become overloaded while others have available capacity, leading to congestion and inefficient distribution of terminal devices across radio interfaces.
Innovation Solution
Access points can set association limitations, such as maximum idle periods, initial silent periods, and maximum association times, to prefer certain terminal devices, balancing the distribution and managing frame transmissions, thereby optimizing the association process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If access points allow all terminal devices to associate freely, then the network coverage is maximized, but congestion and overload occur at popular access points
Solution Approach 1:
The patent applies parameter changes by introducing association limitation parameters (maximum idle period, initial silent period, maximum association time) that dynamically control terminal device associations. These parameters are adjusted based on access point load conditions, allowing the system to adapt between maximizing coverage and preventing congestion by changing the association behavior parameters.
2Ease of operation
If access points accept all association requests, then terminal device connectivity is improved, but frame transmission timing and network performance deteriorate
Solution Approach 1:
The patent applies preliminary action by establishing association limitation parameters before terminal devices attempt to associate. The access point pre-configures maximum idle periods, initial silent periods, and maximum association times that will govern future associations, allowing the system to maintain good connectivity while preventing future transmission conflicts and performance degradation.
Solution Approach 2:
The patent uses parameter changes to control association behavior, where the access point sets specific time-based parameters (maximum idle period, initial silent period, maximum association time) that modify how terminal devices can associate and transmit frames, thereby improving transmission efficiency without sacrificing connectivity.
3Productivity
If association limitations are imposed on terminal devices, then access point load balancing is improved, but the complexity of the association process increases
Solution Approach 1:
The patent applies feedback by having the access point monitor its load conditions and adjust association limitation parameters accordingly. The access point receives feedback about current associations and traffic patterns, then modifies the maximum idle period, initial silent period, or maximum association time parameters to optimize load distribution while managing the complexity through automated adjustments.
Data Source
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Figure 2B~3
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AI summary
This document relates to a wireless network where an access node may define association limitations to prefer some terminal devices over the other. A terminal device may determine the association limitations on the basis of a frame received from the access node and choose, on the basis of the received frame, whether or not to associate to the access node.