Ambient IoT Command Segmentation for Low-Power Wireless Response
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing command message transmission and response in ambient IoT devices, particularly in low-power devices with limited capabilities, such as those used in applications like automated warehouses and health monitoring, due to their low power consumption and limited mobility support.
Innovation Solution
A method and apparatus are developed for transmitting and receiving segmented command messages in ambient IoT devices, where each segment includes information indicating whether it is the last segment, enabling efficient communication with low-power devices using energy harvesting and bidirectional communication with base stations or intermediate nodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If command messages are transmitted to low-power ambient IoT devices, then communication functionality is enabled, but power consumption increases and device complexity increases
Solution Approach 1:
The command message is divided into multiple segments, where each segment contains a segment identifier and a flag indicating whether it is the last segment. This segmentation allows the receiver to process and acknowledge each segment independently, enabling early termination of communication when the complete message is received, thus reducing overall power consumption.
Solution Approach 2:
The system implements bidirectional communication with acknowledgment mechanisms. The receiver sends feedback to the transmitter indicating successful reception of command segments. This feedback loop enables the transmitter to stop sending segments once the command is fully received and executed, preventing unnecessary power consumption from continued transmission.
2Productivity
If segmented command messages are transmitted with last segment indicators, then communication efficiency is improved, but message structure complexity increases
Solution Approach 1:
The command message structure is segmented into multiple parts, each containing a segment identifier and a boolean flag indicating whether it is the last segment. This structured segmentation enables efficient processing by the receiver, which can determine message completion status without complex parsing, thereby improving communication efficiency while maintaining manageable structure.
Solution Approach 2:
The message structure includes specific parameters (segment identifier and last segment flag) that change based on the segmentation state. These parameter changes provide clear, unambiguous information to the receiver about message progression and completion, improving efficiency without requiring complex structural variations.
3Reliability
If bidirectional communication is implemented for command and response, then reliability is improved, but device complexity and power consumption increase
Solution Approach 1:
Bidirectional communication is implemented with acknowledgment messages sent from receiver to transmitter. The receiver confirms successful reception and execution of command segments, providing feedback that enhances reliability. This feedback mechanism ensures that commands are properly received and executed before the transmitter proceeds or terminates communication.
Solution Approach 2:
The bidirectional communication protocol segments commands and responses into manageable units with clear delimiters and status indicators. Each segment can be independently acknowledged and processed, improving reliability by enabling granular error detection and correction without requiring complex overall protocol structures.
Data Source
AI summary
The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method performed by an ambient internet of things (IoT) (A-IoT) device in a wireless communication system is provided. The method includes receiving, from a reader, a command message and transmitting, to the reader, at least one of segments of a command response message, wherein each of the at least one of the segments includes information indicating whether a segment including the information is a last segment or not.