Border Node Packet Bridging for Duplicate-Safe Mesh Communication
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Solution Overview
Problem
Existing wireless mesh networks face challenges in cross-border communication due to limitations in flexibility and the potential for duplicate messages to cause undesired behavior when multiple paths are used, leading to inconsistent operation across networks.
Innovation Solution
Implementing a border node that filters duplicates by maintaining the same network source address and sequence number across networks, allowing seamless communication while reducing congestion and interference by operating on different frequency channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple border nodes are deployed to create multiple communication paths between networks, then communication reliability is improved, but duplicate message generation increases causing inconsistent network operation
Solution Approach 1:
The patent introduces a message sequence number mechanism as an intermediary to identify and filter duplicate messages. Each message is tagged with a sequence number that allows border nodes to recognize duplicates across multiple communication paths without blocking legitimate redundant paths for reliability
Solution Approach 2:
The patent changes the message parameter by adding sequence numbers to messages. This parameter change enables border nodes to distinguish between original and duplicate messages, allowing multiple communication paths to coexist without causing inconsistent network operation
2Object-generated harmful factors
If networks operate on different frequency channels, then interference and congestion are reduced, but cross-border communication complexity increases
Solution Approach 1:
The border node is designed with multi-functionality to operate on multiple frequency channels and handle messages from different networks. This universal design allows a single device to manage cross-border communication between networks on different channels, reducing overall system complexity
3Stability of the object's composition
If duplicate filtering is implemented at border nodes, then network operation consistency is improved, but message processing time increases
Solution Approach 1:
The patent applies preliminary action by pre-tagging messages with sequence numbers at the source before transmission. This allows border nodes to perform rapid duplicate detection through simple sequence number comparison rather than complex message analysis, minimizing processing time while ensuring consistency
Data Source
AI summary
A border node (200) located in an overlapping area of a first wireless mesh network (110) and a second wireless mesh network (120) with the second wireless mesh network (120) having a different network configuration as compared to the first wireless mesh network (110), the border node (200) comprising a radio configured to receive a first packet from the first wireless mesh network (110) operating on a first frequency channel; detect a data message from the first packet; compile the detected data message into a second packet with the second packet having a network header comprising a same network source address and a same network sequence number as comprised in a network header of the first packet; and send the second packet to the second wireless mesh network (120) operating on a second frequency channel, with the second frequency channel same or different from the first frequency channel.