Conditional Log Reporting Indication in Wireless UE
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Solution Overview
Problem
In wireless communication systems, particularly in E-UTRAN networks, the current log reporting methods lead to unnecessary signaling overhead due to incorrect indications of available logged measurement entries, causing the network to request retransmissions even when all entries have been included in the response message.
Innovation Solution
The method involves a UE checking if all stored logged measurement entries are included in the response message and only including an indication if not all entries are included, thereby preventing unnecessary retransmissions by accurately signaling the availability of remaining logged measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE includes an indication in the response message to show that logged measurement entries are available, then the network can request log transmission, but this causes unnecessary signaling overhead when all entries have already been included
Solution Approach 1:
The patent extracts the indication field from the response message when it is not needed (i.e., when all logged measurement entries have been successfully transmitted). This eliminates unnecessary signaling overhead while maintaining the indication mechanism when actually required, directly resolving the contradiction between reporting accuracy and signaling efficiency
Solution Approach 2:
Instead of always including the indication field regardless of whether entries remain, the patent inverts the approach by conditionally including it only when necessary. The indication is omitted when all entries have been transmitted, turning the default behavior around to achieve signaling optimization without compromising reliability
2Reliability
If the network requests retransmissions based on the indication, then log completeness can be ensured, but this causes unnecessary UE information procedures when all entries are already transmitted
Solution Approach 1:
The unnecessary retransmission requests are extracted/eliminated from the network's processing when the UE has already transmitted all logged measurement entries. By conditionally omitting the indication field, the network avoids generating spurious retransmission requests, thereby reducing wasted time in UE information procedures while maintaining log completeness
Solution Approach 2:
The patent implements feedback control where the presence or absence of the indication field provides information to the network about whether retransmission requests are needed. This feedback mechanism prevents unnecessary UE information procedures by accurately reflecting the transmission status, resolving the contradiction between ensuring completeness and avoiding wasted time
Data Source
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AI summary
A method and apparatus for log reporting in a wireless communication system includes receiving (602) a request message by a user equipment (UE), the request message requesting log reporting, wherein at least one logged measurement entry is stored in the UE (604) and the at least one logged measurement entry corresponds to a current Registered Public Land Mobile Network (RPLMN); including (606) all or parts of the at least one logged measurement entry in a response message; including (612) an indication in the response message if (608) less than all of the at least one logged measurement entry is included in the response message; and not including (610) the indication in the response message if (608) all of the at least one logged measurement entry is included in the response message.