Msg3 Quality Report Structure for Carrier Measurement
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Solution Overview
Problem
Current cellular communication systems face challenges in efficiently reporting carrier measurements, particularly in legacy NB-IoT where RRC-based reporting is limited to a single measurement in the anchor carrier, and eMTC lacks a reporting mechanism.
Innovation Solution
The proposed solution involves a method where a wireless device transmits quality reports for one or more carriers or narrowbands in Msg3, including values indicative of the number of repetitions for physical downlink control channel transmissions and aggregation levels, enabling efficient reporting of carrier measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If RRC-based reporting mechanism is used in legacy NB-IoT, then the reporting can be performed, but it is limited to a single measurement in the anchor carrier only
Solution Approach 1:
The patent segments the reporting mechanism by introducing separate MAC CE structures for different carrier types. The DL-MeasReport MAC CE is divided into different formats (first format for anchor carrier, second format for non-anchor carrier), allowing independent optimization for each carrier type without requiring a complete redesign of the reporting mechanism.
Solution Approach 2:
The patent implements dynamic reporting by enabling the UE to selectively report measurements based on carrier type and configuration. The network can dynamically configure which carriers to measure and report through RRC signaling, and the UE adapts its reporting behavior accordingly, switching between different MAC CE formats as needed.
2Adaptability or versatility
If eMTC introduces a reporting mechanism, then measurement reporting capability is added, but it increases device complexity and power consumption
Solution Approach 1:
The patent enables the UE to autonomously determine which measurements to report based on network configuration and current radio conditions. The UE self-manages the measurement and reporting process by selecting appropriate MAC CE formats and determining whether to report based on configured thresholds and triggers, reducing the need for continuous network coordination and thus saving power.
Solution Approach 2:
The patent changes the reporting parameters dynamically based on carrier type and measurement conditions. Different MAC CE formats use different parameter sets (e.g., different repetition number fields for anchor vs. non-anchor carriers), allowing the system to optimize reporting efficiency for each scenario and avoid unnecessary reporting that would consume additional power.
3Productivity
If multiple quality reports for multiple carriers are transmitted in Msg3, then reporting efficiency is improved, but the message size and processing complexity increase
Solution Approach 1:
The patent merges multiple measurement reports into a single MAC CE structure (DL-MeasReport) that can contain measurements for both anchor and non-anchor carriers. By combining multiple reports into one standardized MAC CE format with clear field definitions, the system improves reporting efficiency while maintaining manageable processing complexity through structured data organization.
Solution Approach 2:
The patent creates a universal DL-MeasReport MAC CE structure that can serve multiple functions: reporting anchor carrier measurements, non-anchor carrier measurements, or both simultaneously. The standardized format with optional fields allows the same message structure to handle different reporting scenarios, reducing the need for multiple specialized message formats and simplifying processing.
Data Source
AI summary
Systems and methods for specifying content of carrier measurement reports in a cellular communication system are disclosed. Embodiments of a method performed by a wireless device are disclosed. In some embodiments, the method performed by the wireless device includes transmitting a random access preamble, receiving, from a base station, a random access response, and transmitting, to the base station, a Msg3 comprising one or more quality reports for one or more carriers or narrowbands, each of the one or more quality reports comprising at least one of a value that is indicative of a number of repetitions to be used for physical downlink control channel transmissions to the wireless device on the one or more carriers or narrowbands and an aggregation level. Some embodiments include transmitting, to a base station, an uplink message including the one or more quality reports for the one or more carriers or narrowbands.