UE Latency Measurement via Timing Information Reporting
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Solution Overview
Problem
Current wireless communication systems, such as LTE, lack the ability to accurately measure end-to-end latency, which hinders network optimization and user experience due to the absence of timing information for data transmission and reception.
Innovation Solution
User Equipment (UE) is equipped with the capability to receive and transmit transmission or reception timing information to the network, allowing for the calculation of latency through a method involving request messages and processing of this information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If timing information for data transmission and reception is not collected, then the system structure remains simple, but end-to-end latency cannot be measured accurately
Solution Approach 1:
The patent applies preliminary action by having the UE collect and store timing information (t1, t2, t3, t4) at the moment of data transmission and reception events. This pre-collection of timing data enables accurate latency calculation without requiring complex real-time measurement mechanisms, thus resolving the contradiction between measurement precision and device complexity
Solution Approach 2:
The patent uses timing information (t1, t2, t3, t4) as an intermediary element that mediates between the transmission and reception events. By introducing these timing markers, the system can calculate end-to-end latency through simple arithmetic operations on the timing values, avoiding the need for complex measurement systems while achieving precise latency measurement
2Measurement precision
If timing information is collected and reported, then latency measurement becomes possible, but signaling overhead increases
Solution Approach 1:
The patent extracts only the essential timing information (t1, t2, t3, t4) needed for latency calculation from the overall data transmission process. By taking out only these specific timing parameters and reporting them separately, the system achieves latency measurement capability while minimizing signaling overhead by excluding unnecessary information
3Measurement precision
If the UE reports timing information for each data transmission, then accurate latency measurement is achieved, but processing complexity increases
Solution Approach 1:
The patent applies self-service by having the UE automatically collect, store, and report its own timing information without requiring external assistance from the network side. The UE independently performs the timing measurement and reporting functions, which simplifies the overall system processing complexity while maintaining accurate latency measurement capability
Data Source
AI summary
End-to-end latency measurement scheme is discloses. In this scheme, the UE receives a request message from a network. This request message requests the UE to report transmission or reception timing information. And, the transmission or reception timing information may be for a latency measurement. Thereafter, the UE transmits the transmission or reception timing information to the network.