M2M Paging Message Monitoring Using Extension Flags
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Solution Overview
Problem
In Machine To Machine (M2M) communication, existing methods for monitoring paging messages in idle mode are inefficient, leading to unnecessary battery consumption and prolonged wakefulness due to inefficient segmentation and lack of differentiation between human and M2M device communication protocols.
Innovation Solution
A method and device for monitoring paging messages in M2M communication that utilize a paging listening interval and a paging unavailable interval, with the use of extension flags to determine if additional message segments exist, allowing the M2M device to remain awake only when necessary and return to idle mode if not paged, optimizing battery life and reducing unnecessary monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the M2M device monitors paging messages continuously in idle mode, then the device can receive complete paging messages, but the battery consumption increases and wakefulness is prolonged
Solution Approach 1:
The paging message is divided into multiple segments transmitted in different subframes. The device monitors only the first segment containing the extension flag, and based on the flag value, determines whether to continue monitoring subsequent segments. This segmentation allows the device to minimize monitoring duration while ensuring complete message reception when necessary.
Solution Approach 2:
The extension flag in the paging message segment provides feedback information indicating whether remaining segments exist. The device uses this feedback to dynamically adjust its monitoring behavior - continuing to monitor if the flag indicates more segments, or returning to idle mode if the flag indicates the message is complete, thereby optimizing battery consumption.
2Reliability
If the M2M device monitors all subsequent subframes to ensure complete message reception, then no message segments are lost, but unnecessary monitoring occurs when the message is complete
Solution Approach 1:
The extension flag is placed in the first segment of the paging message, allowing the device to determine in advance whether remaining segments exist before committing to monitor all subsequent subframes. This preliminary information enables the device to avoid unnecessary monitoring of complete messages while ensuring complete reception when segments are actually present.
Solution Approach 2:
The monitoring duration is made dynamic rather than fixed. The device adjusts its monitoring behavior based on the extension flag value - monitoring only as long as necessary to receive complete segmented messages, and returning to idle mode promptly when the message is complete, thereby optimizing the balance between reliability and time efficiency.
3Use of energy by moving object
If the paging message is segmented across multiple subframes, then the device can manage wakefulness periods, but the device must check extension flags to determine monitoring duration
Solution Approach 1:
The extension flag is extracted as a separate, dedicated field within the paging message segment structure. This extraction provides clear, unambiguous information about message segmentation status, simplifying the device's decision-making process compared to analyzing the entire message structure or using complex protocols to determine whether to continue monitoring.
Data Source
AI summary
A method and device for monitoring a paging message in Machine To Machine (M2M) communication are provided. A M2M device receives a segment of the paging message that includes an extension flag and a M2M extension flag. The extension flag indicates that the M2M device checks the M2M extension flag and the M2M extension flag indicates whether a remaining segment of the paging message exists.