Narrowband Measurement Subset for Msg3 Reporting
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Solution Overview
Problem
Current narrowband measurements in cellular communications systems face challenges in efficiently determining which narrowbands to measure during the random access procedure, leading to insufficient time for accurate measurements and inefficient resource utilization.
Innovation Solution
A method where a wireless device determines a subset of narrowbands to perform measurements within a random access procedure, allowing for reporting of these measurements in Message 3 (Msg3), even before receiving Downlink Control Information (DCI), thereby optimizing measurement time and resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the UE performs measurements on all narrowbands during the random access procedure, then the measurement coverage is complete, but the measurement time is insufficient and power consumption increases
Solution Approach 1:
The patent divides the full set of narrowbands into a subset that the UE actually measures and reports. Instead of measuring all narrowbands, the UE selects and measures only a representative subset, thereby reducing measurement time and power consumption while maintaining sufficient measurement coverage for network decisions.
Solution Approach 2:
The patent applies partial action by having the UE perform measurements on only a portion (subset) of the available narrowbands rather than all narrowbands. This partial measurement approach is sufficient for the network to make informed decisions about subsequent transmissions, eliminating the need for complete measurement of all narrowbands.
2Measurement precision
If the UE performs measurements on all narrowbands, then the measurement accuracy is sufficient, but the power consumption increases
Solution Approach 1:
The patent segments the measurement task by having the UE measure only a subset of narrowbands rather than all narrowbands. This segmentation reduces the total number of measurements required, thereby lowering power consumption while maintaining measurement accuracy sufficient for network transmission decisions.
Solution Approach 2:
The patent employs partial action where the UE performs measurements on only a portion of the available narrowbands. This partial measurement approach provides sufficient accuracy for network decisions while significantly reducing power consumption compared to measuring all narrowbands.
3Adaptability or versatility
If the network schedules Msg3/4 DCI on all possible narrowbands, then the transmission flexibility is maximized, but the UE cannot complete measurements in time
Solution Approach 1:
The patent applies preliminary action by having the UE perform measurements on a subset of narrowbands before the network finalizes the Msg3/4 DCI scheduling. The UE determines which narrowbands to measure in advance, and the network schedules DCI based on these preliminary measurements, allowing for time-efficient operation.
Solution Approach 2:
The patent introduces dynamics by allowing the set of measurable narrowbands to be determined flexibly based on the specific random access procedure context. The UE and network dynamically agree on which narrowbands to measure and schedule, rather than following a fixed schedule for all possible narrowbands, thereby adapting to time constraints.
Data Source
AI summary
Systems and methods for narrowband measurements and reporting in a cellular communications system are disclosed. Embodiments of a method performed by a wireless device are disclosed. In some embodiments, the method performed by the wireless device comprises determining a set of narrowbands on which to perform measurements, wherein the set of narrowbands on which to perform measurements is a subset of all narrowbands within a respective system bandwidth. The method further comprises performing measurements on the set of narrowbands during one or more time periods associated with a random access procedure, and reporting the measurements or information derived from the measurements to a base station within a message sent from the wireless device to the base station during the random access procedure. In some embodiments, the message sent from the wireless device to the base station during the random access procedure is a Msg3.