Terminal Adaptor Error Code Reporting via AT Commands
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Solution Overview
Problem
Current mechanisms lack a clear method for terminal equipment to receive network reject/error codes from terminal adaptors, leading to unclear reasons for service request failures, which can result in inefficient retry attempts and network overload.
Innovation Solution
The introduction of AT$ARMEE and AT$ARME commands enables the terminal adaptor to send error information, including error types and codes, to the terminal equipment through the AT command interface, providing clear indications of network entities and error causes, even for unsolicited reject codes and ignored requests.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the terminal adaptor does not forward error information to the terminal equipment, then the communication mechanism remains simple, but the terminal equipment cannot identify the reason for service request failures
Solution Approach 1:
The patent introduces an intermediary mechanism (AT command interface with specific error reporting commands) between the terminal adaptor and terminal equipment to transfer error information. This intermediary structure enables information flow without requiring fundamental changes to the existing communication architecture, thus resolving the contradiction between information completeness and mechanism simplicity.
Solution Approach 2:
The error reporting mechanism is designed to be universal, handling multiple types of error conditions (network reject, network ignore, unsolicited errors) through a unified AT command interface. This multi-functional approach allows the same communication channel to serve both traditional control functions and error information reporting, avoiding the need for separate complex error reporting channels.
2Object-generated harmful factors
If the terminal equipment continues to send service requests without knowing the failure reason, then the terminal equipment maintains simple retry logic, but the network receives excessive signaling messages
Solution Approach 1:
The patent implements a feedback mechanism where the terminal adaptor provides error information back to the terminal equipment through AT commands. This feedback enables the terminal equipment to make informed decisions about retry behavior, adjusting its operations based on the specific error conditions received from the network, thereby reducing excessive signaling messages while maintaining operational simplicity.
Solution Approach 2:
The error information is provided to the terminal equipment before the equipment executes retry logic. This preliminary information allows the terminal equipment to pre-determine appropriate retry behavior based on the error type, preventing unnecessary retry attempts that would generate excessive signaling messages to the network.
3Loss of energy
If the terminal equipment does not receive error codes, then the battery consumption remains normal, but the user experience deteriorates due to failed service access
Solution Approach 1:
The terminal equipment uses the received error information to autonomously determine appropriate retry strategies and service access decisions. This self-service capability allows the equipment to optimize its own operation based on network conditions, improving service access reliability while maintaining efficient battery consumption through intelligent, error-driven decision-making.
Data Source
AI summary
Error information is sent from a terminal adaptor that accesses a wireless network to terminal equipment coupled to access the wireless network through the terminal adaptor. The error information is sent in response to existence of any one of a plurality of errors conditions with respect to access to the wireless network. The error information includes an error type identifying a domain associated with a source of the error condition being reported and an error code providing a reject error cause for the error condition. One of the error conditions may include an unsolicited error received by the terminal adaptor from the wireless network or when a request by the TA is ignored by the wireless network.