UE AT Command for Satellite Coverage Reporting
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Solution Overview
Problem
Current user equipment (UE) lacks a method to report discontinuous satellite coverage status to the application layer or terminal, leading to inadequate decision-making for procedures such as data buffering or transmission during coverage gaps.
Innovation Solution
Introduction of a new interface, the attention (AT) command (+CDISCO), from the 3GPP modem to the terminal equipment (TE), to indicate discontinuous satellite coverage, allowing the UE to report its status and activate or deactivate services accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If discontinuous satellite coverage is implemented to enable satellite E-UTRAN access, then satellite coverage availability is improved, but the ability of the application layer to make informed decisions about data transmission is worsened due to lack of coverage status information
Solution Approach 1:
The patent implements a feedback mechanism where the mobile termination continuously monitors satellite coverage status and sends notifications to the application layer through the terminal equipment. This feedback loop provides real-time information about coverage gaps and availability, enabling the application layer to make informed decisions about data transmission, buffering, and procedure triggering during discontinuous satellite coverage periods.
2Device complexity
If no interface is provided from modem to terminal equipment, then device complexity is reduced, but the terminal's ability to respond to coverage changes is worsened
Solution Approach 1:
The patent introduces the terminal equipment as an intermediary layer between the mobile termination and the application layer. The terminal equipment receives coverage status information from the mobile termination and forwards it to the application layer, enabling communication without requiring direct complex interfaces between all components while maintaining the system's adaptability to coverage changes.
Data Source
AI summary
A method for indicating discontinuous satellite coverage and a user equipment (UE) using the same are provided. The user equipment (UE) includes a terminal equipment (TE) and a mobile termination (MT). The terminal equipment (TE) is for providing services to a user of the user equipment (UE). The mobile termination (MT) is further configured to send to the terminal equipment (TE) an information for indicating a discontinuous satellite coverage.