M2M Mobile Device Capability Update via General Extension Message
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Solution Overview
Problem
In Machine To Machine (M2M) communication using CDMA 2000 systems, mobile devices cannot promptly inform the base station of changes in their capability information, leading to potential communication errors as this information is typically transmitted only during registration messages, which are sent infrequently.
Innovation Solution
A method and device for M2M communication where the mobile device determines support for transmitting capability information via a General Extension Message with the base station, and when changes occur, the updated information is tied with a Registration Message and transmitted immediately using the General Extension Message.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If capability information is transmitted only with Registration Messages, then transmission overhead is reduced, but the timeliness of capability information updates deteriorates
Solution Approach 1:
The capability information transmission is segmented into two paths: periodic transmission via Registration Messages and event-triggered transmission via Origination Messages. This segmentation allows the system to balance between transmission overhead and timeliness by using different message types for different update scenarios.
Solution Approach 2:
The transmission mechanism dynamically adapts based on whether capability information has changed. When changes occur, the system transitions from periodic Registration Message transmission to immediate Origination Message transmission, optimizing both energy efficiency and update timeliness according to actual needs.
2Reliability
If Registration Messages are sent periodically, then capability information is eventually updated, but real-time notification of capability changes is lost
Solution Approach 1:
The mobile device performs preliminary detection of capability information changes before the next scheduled Registration Message is due. When changes are detected, an Origination Message is sent immediately to notify the base station, ensuring real-time notification while maintaining the periodic Registration Message structure for reliability.
3Reliability
If capability information is not updated promptly, then communication between mobile device and base station may contain errors, but frequent transmission increases network traffic
Solution Approach 1:
The system implements a feedback mechanism where the mobile device monitors its own capability information for changes. When changes are detected, the device provides feedback to the base station through an Origination Message, ensuring communication accuracy is maintained without requiring continuous periodic transmissions that would increase network traffic.
Data Source
AI summary
A mobile device and information transmission method are provided. The information transmission method is applied to the mobile device in M2M communication and includes the steps of determining whether a base station and the mobile device support transmission of capability information of the mobile device by a General Extension Message; and determining whether the capability information of the mobile device is changed when the base station and the mobile device support transmission of the capability information by the General Extension Message, wherein when the capability information of the mobile device is changed, the changed capability information is tied up with a Registration Message and transmitted to the base station by the General Extension Message.