LAA Inter-Frequency Measurement Scheduling Using Idle Component Carrier
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Solution Overview
Problem
In wireless communication systems using Licensed Assisted Access (LAA), the long measurement periodicities of Received Signal Strength Indicator (RSSI) and Discovery Signal Timing Configuration (DMTC) measurements often conflict, leading to missed measurements and inefficient resource utilization.
Innovation Solution
A method is introduced to perform RSSI and DMTC measurements on the same frequency using an idle component carrier or shared time slot, reducing the likelihood of missed measurements and optimizing resource allocation by scheduling these measurements jointly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If long measurement periodicities are used for RSSI and DMTC measurements, then measurement accuracy and reliability are improved, but measurement conflicts increase and resource utilization deteriorates
Solution Approach 1:
The patent combines RSSI measurement and DMTC measurement into a unified measurement process. The terminal performs both measurements simultaneously on the same frequency using the same idle component carrier, merging two previously separate measurement procedures into one integrated operation that shares measurement resources and time slots.
Solution Approach 2:
The idle component carrier serves multiple functions: it is used for both RSSI measurement and DMTC measurement, and also for LAA cell discovery. This multi-functional use of the same resource eliminates the need for separate dedicated resources for each measurement type, thereby resolving the conflict between measurement reliability and efficiency.
2Measurement precision
If separate measurement processes are used for RSSI and DMTC, then measurement specificity is maintained, but measurement conflicts increase and resource waste occurs
Solution Approach 1:
The patent merges RSSI measurement and DMTC measurement into a single unified process that executes simultaneously on the same frequency. Both measurements share the same idle component carrier and measurement resources, eliminating redundant resource allocation and reducing overall measurement time while maintaining the specificity of each measurement type through separate measurement result processing.
3Reliability
If measurement periodicities are extended, then measurement accuracy is improved, but LAA cell discovery time increases
Solution Approach 1:
The patent implements continuous measurement by performing both RSSI and DMTC measurements simultaneously in an ongoing manner. The terminal continuously monitors the idle component carrier for both measurement types without interruption, ensuring that measurement accuracy is maintained while reducing the total time required for LAA cell discovery through parallel processing of measurement tasks.
Solution Approach 2:
The patent performs preliminary measurement configuration where the terminal pre-configures measurement parameters and identifies idle component carriers before actual measurement execution. This preliminary preparation allows the terminal to immediately begin simultaneous RSSI and DMTC measurements when conditions are met, reducing overall cell discovery time while maintaining measurement accuracy through pre-established measurement protocols.
Data Source
AI summary
Embodiments of this application disclose a measurement method and a measurement apparatus, to perform RMTC measurement and DMTC measurement on an inter-frequency frequency. The method in the embodiments of this application includes: determining an idle component carrier; determining a RMTC measurement periodicity and a DMTC measurement periodicity of a first inter-frequency frequency for LAA; when the RMTC measurement periodicity and the DMTC measurement periodicity of the first inter-frequency frequency have a same time point, separately performing RMTC measurement on the first inter-frequency frequency by using the idle component carrier to obtain a first measurement result, and performing DMTC measurement on the first inter-frequency frequency to obtain a second measurement result; and sending the first measurement result and the second measurement result to a network device, where the first measurement result and the second measurement result are used to indicate the network device to schedule a resource.