Access Point Selection via Uplink Processing Rate
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Solution Overview
Problem
In wireless networks with high density of mobile users, existing access point selection methods based on signal strength lead to congestion and performance degradation due to uneven distribution of traffic, causing service disruptions and inefficient resource utilization.
Innovation Solution
An access point selection apparatus and method that calculates the uplink packet processing rate by determining the retransmission rate, collision probability, and number of terminals for each access point, allowing the selection of the access point with the highest processing rate for connection, rather than relying solely on received signal strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If access point selection is based on signal strength (RSSI), then connection simplicity is improved, but traffic distribution becomes uneven and congestion occurs
Solution Approach 1:
The patent changes the selection parameter from simple signal strength (RSSI) to a composite metric that includes throughput, retransmission rate, and collision probability. This allows the system to consider multiple factors beyond just signal strength, enabling better traffic distribution while maintaining automated selection.
Solution Approach 2:
The patent implements feedback mechanisms by monitoring retransmission rates and collision probabilities from packet sniffing. This feedback information is used to dynamically adjust access point selection decisions, allowing the system to respond to actual network conditions rather than relying solely on static signal strength measurements.
2Speed
If access point selection is based on signal strength (RSSI), then connection speed is improved, but service disruption occurs during handovers
Solution Approach 1:
The patent performs preliminary assessments of access points by sniffing packets and calculating throughput, retransmission rates, and collision probabilities before making connection decisions. This preliminary action allows the system to identify suitable access points in advance, reducing service disruptions during handovers while maintaining connection speed.
3Device complexity
If access point selection is based on signal strength (RSSI), then measurement simplicity is improved, but traffic distribution becomes uneven
Solution Approach 1:
The patent enables access points to self-report their performance characteristics through packet sniffing and analysis. The system automatically calculates throughput, retransmission rates, and collision probabilities without requiring complex manual configuration, allowing sophisticated traffic distribution with minimal additional complexity.
4Ease of operation
If access point selection is based on signal strength (RSSI), then connection establishment is simplified, but congestion at access points increases
Solution Approach 1:
The patent introduces dynamic selection criteria that adapt to current network conditions. By continuously monitoring throughput, retransmission rates, and collision probabilities, the system can dynamically adjust which access points are selected, preventing congestion from developing while maintaining simple automated connection establishment.
Data Source
AI summary
An apparatus for access point selection are disclosed. The disclosed access point selection apparatus includes: a sniffing unit configured to sniff packets transmitted to each of a multiple number of access points during a preset duration of time; a calculation unit configured to calculate a retransmission rate for each of the access points, calculate a collision probability of packets transmitted to each of the access points and a number of terminals transmitting packets to each of the access points by using the retransmission rate, and calculate an uplink packet processing rate of each of the access points by using the collision probability and the number of terminals transmitting packets; and a selection unit configured to select the access point having the highest value of the uplink packet processing rate from among the access points as the access point to which a target terminal is to be wirelessly connected.