Channel Quality Measurement During Cell Active-Inactive Cycles
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Solution Overview
Problem
The increasing network transmission bandwidth and peak to average power ratio (PAPR) in cellular communication technologies lead to higher power consumption in network devices, necessitating energy-saving modes that require effective channel quality measurement methods.
Innovation Solution
A method for determining channel quality measurement periodicities and reporting intervals based on cell activity/inactivity times, using radio link monitoring (RLM), beam failure detection (BFD), and beam failure recovery (BFR) measurements, adjusted by reference signal periodicities and cell discontinuous transmission/reception (DTX/DRX) configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the network device operates in continuous transmission mode to maintain effective channel quality measurement, then the measurement accuracy is improved, but the power consumption increases
Solution Approach 1:
The patent implements periodic channel quality measurement by configuring measurement windows that occur at specific intervals (e.g., every 10ms or 20ms) rather than continuous measurement. The network device sends reference signals and the terminal device performs measurements only during these periodic windows, reducing overall power consumption while maintaining adequate measurement accuracy for network operation
Solution Approach 2:
The patent performs channel quality measurement in advance during measurement windows before actual data transmission occurs. This allows the network device to proactively assess channel conditions and make scheduling decisions based on pre-acquired channel state information, ensuring measurement accuracy is maintained while avoiding continuous measurement operations
2Use of energy by moving object
If the network device reduces transmission activity to save power, then the power consumption is reduced, but the channel quality measurement effectiveness deteriorates
Solution Approach 1:
The patent dynamically adjusts the measurement configuration based on terminal mobility states. For high-speed terminals, more frequent measurement windows are configured to capture rapid channel changes, while for low-speed terminals, less frequent measurements suffice. This dynamic adaptation maintains measurement reliability appropriate to each scenario while optimizing power consumption
Solution Approach 2:
The patent changes measurement parameters such as reference signal periodicity, measurement window duration, and reporting frequency based on service requirements and channel conditions. By adjusting these parameters, the system maintains adequate measurement effectiveness for different service types (e.g., eMBB, uRLLC, eMTC) while reducing measurement activity and power consumption when full measurement intensity is not required
3Measurement precision
If the reference signal periodicity is increased to improve measurement resolution, then the measurement precision is improved, but the power consumption increases
Solution Approach 1:
The patent applies different reference signal periodicities to different terminal devices based on their specific needs. High-speed terminals or those requiring precise channel knowledge receive more frequent reference signals, while low-speed terminals receive less frequent signals. This localized quality adjustment maintains necessary measurement precision for each device while reducing overall system power consumption
Data Source
AI summary
A channel quality measurement method and an apparatus are applied to the field of wireless communication technologies. The method includes: A terminal device receives first indication information sent by a network device, where the first indication information indicates that a first channel is not transmitted in a first cell in a first time period of a first cycle and indicates that the first channel is transmitted in the first cell in a second time period of the first cycle. The terminal device determines a reporting periodicity and/or an evaluation periodicity of channel quality measurement based on the first cycle, and determines a measurement result of the channel quality measurement based on N reference signals. The channel quality measurement is RLM measurement, BFD measurement, or BFR measurement. The method is used to implement channel quality measurement in a scenario in which cell active/inactive time is configured.