User Equipment Logging Random Access Failure Data
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Solution Overview
Problem
In wireless communication systems, user equipment (UE) faces challenges in efficiently transitioning from an idle state to a connected state due to failed connection establishment procedures, particularly in logging and reporting information about random access failures, which hinders network optimization and service quality.
Innovation Solution
The method involves logging information about failed connection establishment procedures, including random access preamble transmission attempts, maximum power usage, and contention occurrences, and transmitting this information to the network during successful subsequent connection establishment, allowing for improved network awareness and optimization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE logs information about random access failure and transmits it during successful connection establishment, then the network can optimize performance and reduce costs, but the device complexity increases due to additional logging and transmission procedures
Solution Approach 1:
The UE performs preliminary logging of random access failure information during the connection establishment procedure. The log includes details such as the number of preamble transmission attempts, maximum power usage, and contention occurrence. This preliminary action allows the network to receive valuable failure data without requiring separate dedicated logging procedures, thus improving reliability while managing device complexity.
Solution Approach 2:
The invention implements a feedback mechanism where the UE reports logged failure information to the network during successful connection establishment. The network uses this feedback to identify coverage holes, optimize random access parameters, and improve overall connection reliability. The feedback loop enables continuous network optimization based on actual failure data collected from UEs.
2Reliability
If the UE reports detailed failure information to the network, then the network can identify coverage holes and optimize parameters, but the loss of time increases due to additional information processing
Solution Approach 1:
The UE prepares and logs failure information in advance during the connection establishment procedure, so that when the connection succeeds, the information is already formatted and ready for transmission. This preliminary preparation minimizes the time required for information processing and transmission, while still providing the network with detailed failure data for optimization purposes.
Solution Approach 2:
The UE logs only the most critical failure information parameters such as preamble transmission count, power usage, and contention status. By selecting only the most relevant data points, the system achieves effective network optimization without the overhead of logging and processing excessive information, thus balancing reliability improvement with time efficiency.
3Loss of information
If the UE stores failure information in idle state and reports it during connection setup, then the network awareness improves, but the use of energy increases due to additional storage and transmission operations
Solution Approach 1:
The invention merges the failure information reporting with the existing connection establishment procedure. Instead of requiring separate dedicated reporting sessions, the failure log information is transmitted along with standard connection setup messages. This merging approach ensures that failure information is communicated to the network without requiring additional energy-intensive separate transmission operations.
Solution Approach 2:
The UE automatically logs and manages failure information without requiring network intervention or additional power-intensive processing. The logging function operates passively during connection attempts, and the information is transmitted opportunistically when connection establishment succeeds, allowing the system to minimize energy consumption while maintaining information availability.
Data Source
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Figure 3(a)~3(b)
AI summary
Disclosed herein is a method of, at a user equipment (UE), transmitting and receiving a signal to and from a network in a wireless communication system. The method includes logging information about failure of a first connection establishment procedure if the first connection establishment procedure with the network has failed, and transmitting the logged information to the network when a second connection establishment procedure with the network is successful.