Dynamic Wireless Network Topology with Balanced Root Access Points

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Solution Overview

Problem

Current wireless network topology systems based on IEEE 802.11 protocol face issues such as inflexibility, high complexity, unbalanced loading, and inefficient bandwidth usage, leading to poor performance and interference, especially when integrated with wired networks.

Innovation Solution

A dynamic wireless network topology system where access points are assigned default address group IDs, allowing them to automatically form optimal links with the wired network, reducing hop count, and balancing loading by designating root and backup access points to operate on different channels, thereby optimizing transmission efficiency and reducing interference.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a single root access point is designated to serve all back-end pure access points, then the network topology is simplified, but the loading of the root access point becomes unbalanced and congested

Engineering Contradiction:

Improvenetwork topology complexityVSAvoidroot access point loading balance

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent divides the wireless network into multiple independent topology systems, each with its own root access point. This segmentation distributes the dataflow across multiple root access points instead of concentrating it at a single root, thereby balancing the loading while maintaining topological simplicity within each subsystem.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements dynamic role assignment where access points can switch between root and backup roles based on real-time conditions. The system dynamically determines which access point becomes the active root and which becomes backup, allowing flexible load distribution and preventing static topological constraints from causing congestion.

Inventive Principle:

Principle #15Dynamics

2Ease of operation

If access points are assigned fixed roles as root or backup, then the network management is simplified, but the system becomes inflexible and cannot adapt to dynamic conditions

Engineering Contradiction:

Improvenetwork management simplicityVSAvoidsystem flexibility

Core Design Contradiction:

Ease of operationVSAdaptability or versatility

Solution Approach 1:

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system incorporates feedback mechanisms where access points continuously monitor network conditions and can request role changes or topology adjustments. This feedback loop enables the network to adapt to changing conditions while maintaining manageable operations through automated decision-making.

Inventive Principle:

Principle #23Feedback

3Area of stationary object

If multiple wireless links are added to expand network coverage, then the network coverage is improved, but the transmission performance diminishes due to shared medium interference

Engineering Contradiction:

Improvenetwork coverage areaVSAvoidtransmission performance

Core Design Contradiction:

Area of stationary objectVSReliability

Solution Approach 1:

The patent divides the wireless network into multiple independent topology systems, each operating on its own channel. This segmentation isolates traffic across different channels, reducing interference between simultaneous transmissions and maintaining high transmission performance while expanding overall network coverage through multiple parallel systems.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent utilizes multiple channels as an additional dimension for network expansion. Instead of increasing coverage by adding more links on a single channel (which increases interference), the system expands into the channel dimension, allowing multiple topology systems to operate simultaneously without mutual interference.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

4Quantity of substance

If the hop count of frames is increased to reach the wired network, then more access points can be connected, but the transmission efficiency decreases due to increased interference

Engineering Contradiction:

Improvenumber of connected access pointsVSAvoidtransmission efficiency

Core Design Contradiction:

Quantity of substanceVSProductivity

Solution Approach 1:

The patent creates multiple independent topology systems with separate root access points, allowing access points to reach the wired network through shorter paths. This segmentation reduces the maximum hop count needed while maintaining the ability to connect many access points, as each topology system operates independently with optimized local routing.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces backup access points as intermediary nodes that can serve as alternative routing paths. These backup access points act as mediators that can forward frames more efficiently, reducing the effective hop count and minimizing interference while still enabling connection of multiple access points to the wired network.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS7808959B2Topology system of wireless network with dynamic balance

Publication Date: 2010.10.05 ALPHA NETWORKS INC

AI summary

The present invention is to provide a topology system of wireless network with dynamic balance comprising at least one subsidiary topology system of wireless network each having a plurality of access points and only one access point automatically becomes a root access point which operates on a channel different from others, and dynamically generates an unique derivative group ID different from others as the root access point linked with a wired network; other access points not linked with the wired network join one of subsidiary topology systems of wireless network according to loading and dataflow of the subsidiary topology systems of wireless network, and automatically become either a pure access point or an escape access point, dynamically generate an unique derivative group ID same as those linked with other root access points, and operate on a channel same as those linked with other root access points.