Aggregated Packet Directory for Power Saving
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Solution Overview
Problem
In shared medium networks, devices waste resources by unnecessarily receiving and processing entire communications packets, even if only a portion is addressed to them, due to the lack of efficient addressing protocols that allow for early power-saving modes.
Innovation Solution
Implementing an aggregated packet format with a directory section listing addresses in order of transmission, allowing receiving devices to determine the last relevant frame and enter a low power mode for the remainder of the packet, and organizing frames by address type to promote power savings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a device listens to the entire aggregated packet to check for addressed frames, then it ensures it does not miss any frames addressed to it, but it wastes battery power by processing frames not addressed to it
Solution Approach 1:
The patent applies preliminary action by placing a directory section at the beginning of the aggregated packet that lists all destination addresses in advance. This allows receiving devices to check the directory first, determine whether they are addressed in the packet, and only then decide whether to continue receiving and processing the full packet or enter low-power mode, thus avoiding unnecessary power consumption while ensuring reliable frame reception.
Solution Approach 2:
The patent segments the aggregated packet into distinct sections: a directory section listing destination addresses, and a data section containing the actual frames. This segmentation allows receiving devices to process only the relevant portion of the packet (either the directory to check addresses, or skip to specific frames if addressed), rather than processing the entire packet, thereby reducing power consumption while maintaining reliability.
2Use of energy by moving object
If a device enters low power mode after receiving the last relevant frame, then it conserves battery power, but it requires accurate knowledge of when the last relevant frame occurs
Solution Approach 1:
The directory section provides preliminary information about all destination addresses and their corresponding frame positions in advance. Receiving devices can use this pre-provided information to accurately determine when the last frame addressed to them occurs, enabling them to enter low-power mode at the precise moment without needing complex real-time analysis, thus balancing power savings with manageable processing complexity.
Data Source
AI summary
In a communications packet directed to multiple addresses and having a directory of the addresses in order of transmission, a device receiving the packet may use the directory to help determine when the last frame in which the device has an interest is received, and then enter a low power mode for the remainder of the packet reception. The device constructing the packet for transmission may arrange the frames in a manner that promotes overall power savings in the group of addressed devices.