Wireless Gateway Selection for Load Distribution
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Solution Overview
Problem
Conventional wireless network systems face issues with high communication load and limited flexibility in setting positions for gateways and wireless nodes due to reliance on a single gateway for interconnecting with IP networks, leading to potential failures and restricted network connectivity.
Innovation Solution
A wireless network system that allows for the selection of an optimal gateway from a plurality based on path search information, distributing communication loads and enhancing flexibility by using multiple gateways, with the ability to reroute data upon failure detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single gateway is used to interconnect the wireless network and IP network, then the system structure is simple, but the communication load on the gateway increases and the system reliability decreases
Solution Approach 1:
The patent divides the single gateway function into multiple gateways (first gateway and second gateway). Each gateway independently performs protocol conversion and data forwarding between the wireless network and IP network. This segmentation distributes the communication load and eliminates the single point of failure, thereby improving system reliability while maintaining relatively simple individual gateway structures.
Solution Approach 2:
The patent changes the parameter of gateway quantity from one to multiple. By introducing a plurality of gateways with different network addresses, the system transforms from a single-point architecture to a multi-point architecture, which fundamentally alters the load distribution and reliability characteristics without significantly complicating the overall system structure.
2Device complexity
If a single gateway is used for interconnection, then the gateway setting position is fixed, but the flexibility in positioning wireless nodes and gateways is limited
Solution Approach 1:
By segmenting the gateway function into multiple independent gateways, the patent enables flexible spatial distribution. Each gateway can be positioned at different locations within the wireless network, allowing wireless nodes to connect to the nearest or most suitable gateway, thereby enhancing positioning flexibility without requiring complex centralized control.
Solution Approach 2:
Each gateway in the system performs the same universal function of protocol conversion and data forwarding. This multi-functionality allows any gateway to serve any wireless node, providing adaptability in positioning. The system can dynamically assign different gateways to different nodes based on location, load, or network conditions without changing the fundamental architecture.
3Reliability
If multiple gateways are introduced to improve reliability and distribute load, then the communication load is reduced and reliability increases, but the device complexity increases
Solution Approach 1:
The patent creates copies of the gateway function with identical capabilities and interfaces. Each gateway is a copy that can independently perform protocol conversion and data forwarding. This copying approach increases reliability through redundancy while keeping each individual gateway simple and identical to others, minimizing the complexity increase compared to creating fundamentally different system components.
4Productivity
If multiple gateways are used to distribute communication load, then the communication load on each gateway is reduced, but the path selection complexity increases
Solution Approach 1:
Wireless nodes autonomously perform path selection by evaluating multiple routes through different gateways based on local information such as signal strength, gateway load, and network conditions. This self-service approach distributes the path selection intelligence to the edges of the network, avoiding the need for complex centralized path management while improving communication efficiency through load distribution.
Data Source
AI summary
In a wireless network system for interconnecting a wireless network and another network different from the wireless network, the wireless network system includes: a plurality of wireless nodes for establishing the wireless network; a control device connected to the other network; and a plurality of gateways for interconnecting the wireless network and the other network, wherein the wireless node searches a path from a gateway candidate list, selects a gateway on an optimal path based on information collected in searching the path, and transfers data to the control device through the gateway on the optimal path.