Power Line Multicast Frames With Embedded Member Information
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Solution Overview
Problem
The existing power line communication systems face significant resource overheads in maintaining multicast group members due to the need for additional management frames for group establishment and maintenance, especially in IoT scenarios with large numbers of nodes having diverse attributes.
Innovation Solution
A power line communication method where multicast frames include member information, allowing nodes to determine their membership and respond accordingly, reducing the need for separate management frames by using time and frequency domain resources for response information based on their location within the multicast member information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional management frames are sent for establishment and maintenance of multicast group, then multicast group management is achieved, but resource overheads increase
Solution Approach 1:
The patent merges the multicast group management function into the data frame structure itself. The management frame is integrated with the data frame, allowing simultaneous transmission of data and group membership information. This eliminates the need for separate management frames and reduces resource overheads while maintaining reliable multicast group management.
Solution Approach 2:
The data frame is designed to serve multiple functions: carrying data payload and simultaneously conveying multicast group membership information. This multi-functional frame structure eliminates the need for dedicated management frames, reducing system resource consumption while achieving both data transmission and group management objectives.
2Reliability
If separate management frames are used for multicast group maintenance, then group establishment and maintenance is ensured, but system bandwidth resources decrease
Solution Approach 1:
The patent combines group establishment and maintenance information within the data frame structure. By integrating management functions into the data frame, the system eliminates redundant management frames and optimizes bandwidth utilization while ensuring reliable group management.
Solution Approach 2:
The data frame is designed as a universal structure that handles both data transmission and group management tasks. This multi-functional approach ensures that bandwidth resources are not wasted on separate management frames, thereby improving system productivity while maintaining group management reliability.
3Adaptability or versatility
If broadcasting data packets to all nodes, then data transmission coverage is achieved, but additional retransmission or broadcast storm occurs
Solution Approach 1:
The patent implements selective reception based on local node identification. Each node checks the member list in the data frame to determine if it should process the data. This local quality approach allows data transmission coverage while preventing broadcast storms by having nodes selectively process only relevant data packets.
Solution Approach 2:
The patent employs acknowledgment mechanisms where nodes provide feedback about data reception status. This feedback system enables the transmitter to understand which nodes have successfully received data, allowing for targeted retransmissions only when necessary and preventing unnecessary retransmission storms.
Data Source
AI summary
A power communication method includes a first node that receives a first multicast frame. The first multicast frame includes multicast member information and a payload of a multicast member. When the multicast member information indicates that the multicast includes the first node, the first node sends response information. The response information indicates whether one or more units in the payload are correctly received. When the multicast member information indicates that the first node is not a multicast member, no response information is sent.