Queuing Delay Measurement Report in Wireless Communication
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently reporting queuing delay measurement reports, particularly in minimizing signaling overhead for uplink Packet Data Convergence Protocol (PDCP) queuing delay measurements.
Innovation Solution
User Equipment (UE) reports an average uplink PDCP queuing delay as a ratio of the PDCP Service Data Unit (SDU) discard timer value, reducing signaling overhead by using a ratio rather than absolute time duration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If absolute time duration is used to report queuing delay measurements, then measurement precision is improved, but signaling overhead increases
Solution Approach 1:
The patent transforms the queuing delay measurement from absolute time duration to a ratio relative to the PDCP SDU discard timer value. This parameter change allows the measurement to be represented with fewer bits while maintaining meaningful information about delay conditions, directly resolving the contradiction between measurement precision and signaling overhead.
2Quantity of substance
If ratio of PDCP SDU discard timer value is used to report queuing delay, then signaling overhead is reduced, but measurement precision deteriorates
Solution Approach 1:
The PDCP SDU discard timer value serves as an intermediary reference that contextualizes the queuing delay measurement. By expressing delay as a ratio of this timer value, the system maintains meaningful measurement information while using compact representation, thus reducing signaling overhead without completely sacrificing measurement utility.
Data Source
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Figure 2B~3
Figure 4~5(b)
AI summary
The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for transmitting a queuing delay measurement report in a wireless communication system, the method comprising: receiving a queuing delay measurement configuration including discard timer values and a measurement period from an eNB, wherein each of the discard timer values respectively corresponds to one radio bearer among a set of radio bearers associated with a QCI configured for the UE, determining a queuing delay for the QCI based on queuing delays for PDCP SDUs from the set of radio bearers during the measurement period, selecting a specific discard timer value among the discard timer values, calculating a queuing delay ratio for the QCI by dividing the queuing delay for the QCI by the specific discard timer value, and transmitting a queuing delay measurement report including the QCI and the queuing delay ratio for the QCI to the eNB.