Packet Origin Detection in Multicast Network Nodes
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Solution Overview
Problem
In multicast networks, the method of flooding leads to inefficiencies and resource waste due to repeated packet transmission and processing, as nodes receive and retransmit packets, including those from themselves, causing bandwidth and CPU resource wastage.
Innovation Solution
A control method where nodes determine the origin of received packets and selectively drop or save them based on throughput capacity and time intervals, using an access control list to manage packet handling and reduce duplicate processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If flooding method is used to forward packets to all needed nodes, then packet delivery coverage is improved, but bandwidth waste and CPU resource waste increase
Solution Approach 1:
Each node applies different packet handling behaviors based on local conditions - nodes selectively drop packets from themselves while forwarding packets from other nodes, creating localized optimization without global flooding
Solution Approach 2:
The patent extracts and removes duplicate packets from the network flow by having nodes identify and drop packets that originated from themselves, eliminating redundant transmissions while maintaining necessary packet delivery
2Extent of automation
If nodes transmit information back and forth to the controller in SDN, then centralized control is improved, but time consumption and computing resource waste increase
Solution Approach 1:
Nodes autonomously determine packet origins and make local decisions about packet handling without requiring constant controller intervention, reducing communication overhead while maintaining control functionality
Solution Approach 2:
Nodes perform preliminary packet origin determination and filtering locally before transmitting to the controller, reducing the amount of information that needs to be communicated and processed centrally
Data Source
AI summary
A control method, suitable for a network structure including several nodes, is disclosed. Each of the nodes is directly or indirectly electrically coupled with other nodes. The control method includes following steps. At least one packet is received by one of the nodes. The one of the nodes determines whether the received packet is originally transmitted from the node itself or other nodes. The one of the nodes drops the received packet if the received packet is originally transmitted from the same node itself. The one of the nodes selectively saves the packet according to a throughput capacity and a time interval if the received packet is originally transmitted from the other nodes.