Wireless Mesh Node Channel Hopping for High-Priority Message Delivery
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Solution Overview
Problem
Conventional wireless mesh networks experience reduced throughput due to nodes periodically tuning into a reserved channel for high-priority messages, which are rare, causing unnecessary channel reservation and preventing reception of other messages.
Innovation Solution
A method where nodes divide adjacent nodes into subsets based on their channel hopping sequences, allowing high-priority messages to be transmitted on specific channels during optimal time intervals, minimizing the need for nodes to constantly tune into a reserved frequency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If nodes periodically tune into a reserved channel for high-priority messages, then message delivery reliability is improved, but network throughput deteriorates
Solution Approach 1:
The patent segments the network nodes into different groups, each assigned to specific channels. High-priority messages are transmitted on dedicated channels to specific node groups without requiring all nodes to tune in, thus maintaining reliability for important messages while allowing other nodes to continue normal operations on their assigned channels.
Solution Approach 2:
The patent implements periodic channel hopping sequences where nodes systematically switch between channels at predetermined intervals. This allows nodes to access high-priority messages on reserved channels at specific times while minimizing the overall impact on network throughput by structuring the periodic tuning in an organized manner.
2Reliability
If nodes tune into a reserved channel for high-priority messages, then message reception capability is improved, but other message reception deteriorates
Solution Approach 1:
The patent divides nodes into multiple groups and assigns different channels to different groups. When a node tunes into a reserved channel for high-priority messages, only its assigned group is affected, while other groups continue receiving normal messages on their assigned channels, minimizing information loss across the network.
Solution Approach 2:
The patent implements dynamic channel assignment where nodes can switch between channels based on message priority and current channel conditions. This dynamic approach allows nodes to access high-priority messages when needed while maintaining flexibility to return to normal channel operations, reducing the loss of regular message reception.
3Speed
If nodes constantly tune into reserved frequency for high-priority messages, then message delivery speed is improved, but network efficiency deteriorates
Solution Approach 1:
The patent pre-assigns nodes to specific channels and groups based on their communication patterns and priorities. This preliminary organization allows high-priority messages to be delivered quickly to the appropriate node groups without requiring constant channel scanning or tuning by all nodes, thus improving delivery speed while maintaining network efficiency.
Solution Approach 2:
The patent applies different channel access strategies to different node groups based on their specific requirements. High-priority message-receiving nodes have access to reserved channels, while other nodes operate on normal channels. This localized quality approach ensures fast delivery where needed without compromising overall network efficiency.
Data Source
AI summary
A node within a wireless mesh network is configured to forward a high-priority message to adjacent nodes in the wireless mesh network by either (i) transmitting the message during successive timeslots to the largest subset of nodes capable of receiving transmissions during each timeslot, or (ii) transmitting the message on each different channel during the timeslot when the largest subset of nodes are capable of receiving transmissions on each of those channels.