Wireless Multi-Hop Network Load Distribution via Priority Forwarding
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Solution Overview
Problem
Conventional wireless communication systems face challenges in autonomously dispersing forwarding load in wireless multi-hop networks, leading to concentration of load in single nodes, which hinders efficient data collection and firmware updates in systems like smart meter communication networks.
Innovation Solution
A wireless communication device that collects forwarding load information, determines forwarding priority, and performs forwarding control to prioritize packet transmission through multi-cast or broadcast communications, thereby autonomously dispersing the load across nodes without concentrating it in a single node.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If forwarding load is concentrated in a single node, then forwarding control is simplified, but network reliability and scalability deteriorate
Solution Approach 1:
The patent segments the forwarding load by dividing the network into multiple forwarding domains, each managed by a different node. Instead of one node handling all forwarding decisions, multiple nodes independently manage forwarding within their respective domains based on local load conditions, thereby distributing the complexity while improving reliability
Solution Approach 2:
The patent introduces a new dimension of control by adding forwarding priority levels and load-based routing decisions. Nodes can select from multiple forwarding paths and priorities based on current network conditions, transforming a single-point control model into a multi-dimensional distributed control model that enhances both reliability and scalability
2Stability of the object's composition
If firmware updates are performed across all nodes, then system consistency is improved, but network traffic congestion increases
Solution Approach 1:
The patent implements preliminary action by pre-positioning firmware update packets at strategic nodes before they are needed. Update packets are forwarded ahead of time through the network using available bandwidth, so that when a node needs an update, it is already available locally or nearby, reducing the impact on data collection operations
Solution Approach 2:
The patent applies dynamics by making forwarding decisions adaptive to current network conditions. The forwarding priority and path selection for firmware updates dynamically adjust based on real-time network load, ensuring that updates are propagated when bandwidth is available without causing congestion during peak data collection periods
3Ease of operation
If forwarding priority is determined by single criterion, then decision-making is simplified, but forwarding efficiency deteriorates
Solution Approach 1:
The patent applies local quality by allowing different forwarding priorities and criteria to be applied to different types of packets and different network conditions. Instead of a uniform forwarding rule, the system selectively applies different priority levels and routing criteria based on packet type, network state, and local node conditions, optimizing forwarding efficiency while maintaining operational simplicity
Data Source
AI summary
A wireless communication device according to an embodiment includes one or more hardware processors. The one or more hardware processors: collect forwarding load information about wireless communications in a wireless multi-hop network; determine, based on the forwarding load information, a degree of forwarding priority for a packet corresponding to a forwarding determination target; perform a forwarding control such that the packet corresponding to the forwarding determination target is forwarded earlier as the degree of forwarding priority is higher; and, when the packet corresponding to the forwarding determination target is forwarded, transmit the packet corresponding to the forwarding determination target by multi-cast communications or broadcast communications.