Hierarchical Node Selection for LAN Wireless Coverage
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Solution Overview
Problem
Existing local area network (LAN) systems face challenges in optimizing the choice of nodes for wireless communication coverage extension, leading to suboptimal latency in data transmission and channel congestion due to the use of a single frequency band for backhaul subnetworks, and lack the ability to select the best node for association when multiple nodes are available.
Innovation Solution
A method and device for selecting a node in a LAN that involves obtaining and analyzing hierarchical level information from each node, including connection status to higher-level nodes, to optimize channel usage and reduce latency by allowing equipment to choose the node offering the best performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single frequency band is used for the backhaul subnetwork, then the channel configuration is simplified, but channel congestion and transmission latency increase
Solution Approach 1:
The patent segments the backhaul subnetwork into multiple frequency bands (2.4 GHz, 5 GHz, and 6 GHz) to distribute traffic across different channels. Each band can be independently configured and used by different nodes, thereby reducing channel congestion and transmission latency while maintaining manageable complexity through structured band assignment.
Solution Approach 2:
The patent introduces an additional dimension to the channel configuration by utilizing vertical frequency band separation (2.4 GHz, 5 GHz, 6 GHz) in addition to horizontal spatial distribution of nodes. This multi-dimensional approach allows simultaneous transmissions on different frequency layers, reducing latency without significantly increasing configuration complexity.
2Device complexity
If tree-form topology is used for the backhaul subnetwork, then node interconnection is simplified, but transmission latency increases
Solution Approach 1:
The patent implements dynamic node selection where nodes can dynamically choose their parent node in the tree-form topology based on current network conditions such as latency, bandwidth availability, and load. This dynamic adaptation allows the network to optimize transmission paths in real-time, reducing latency while preserving the simplified hierarchical structure.
Solution Approach 2:
The patent changes the selection parameter for parent nodes from static (fixed topology) to dynamic (based on latency measurements, signal strength, and network load). Nodes can switch between different parent nodes to minimize transmission latency, effectively adjusting the topology parameters without changing the fundamental tree structure.
3Ease of operation
If nodes are forced to use the same channel for backhaul communication, then coordination is simplified, but channel collisions and congestion increase
Solution Approach 1:
The patent applies local quality differentiation by allowing different nodes to operate on different frequency channels based on their local network conditions, geographic location, and traffic patterns. Each node can select the most appropriate channel (2.4 GHz, 5 GHz, or 6 GHz) for its specific context, reducing collisions and congestion while maintaining coordinated operation through centralized or distributed channel assignment protocols.
Data Source
AI summary
A method and a device for selecting a node in a local area network comprising nodes allowing an extension of wireless communication coverage, the nodes being interconnected by an access point interface of a backhaul subnetwork and a client interface of the backhaul subnetwork of another node, each node of the backhaul subnetwork emitting at least one wireless network called a fronthaul network, to associate itself with the local area network an item of equipment obtains, from each node allowing an extension of wireless communication coverage, information comprising at least one item of information representing the hierarchical level of the node and an item of information indicating whether the client interface of the backhaul subnetwork is connected to an access-point interface of the backhaul subnetwork of a node of a higher hierarchical level, selects, from the information obtained, the node allowing an extension of wireless communication coverage with which the equipment associates itself.