NB-IoT Repetition Configuration for 16QAM Transmission Efficiency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing NB-IoT and MTC technologies face challenges in meeting the increased data rate and power efficiency requirements of IoT applications, particularly in scenarios like smart cities and smart agriculture, due to limitations in uplink transmission capacity and hardware constraints, necessitating improved repetition configuration methods for 16QAM modulation.
Innovation Solution
A method and apparatus for determining repetition parameters based on the 16QAM modulation mode, including conditions for performing or not performing repetition for uplink and downlink transmissions, using predefined rules and candidate sets to optimize signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If 16QAM modulation is used for uplink transmission, then data transmission rate is improved, but transmission reliability deteriorates due to hardware constraints and channel conditions
Solution Approach 1:
The patent implements dynamic modulation adaptation by allowing the terminal to switch between QPSK and 16QAM modulation modes based on real-time channel conditions and configured parameters. The network device configures the terminal with a first parameter indicating whether 16QAM is enabled, and the terminal dynamically selects the appropriate modulation mode, making the system flexible and adaptive to changing conditions rather than fixed.
Solution Approach 2:
The patent changes the modulation parameter (from fixed QPSK to configurable 16QAM) to improve data transmission rate. The network device configures the terminal with a first parameter that enables or disables 16QAM modulation, allowing the system to optimize transmission rate by changing this key parameter when channel conditions permit, while maintaining the ability to fall back to more robust modulation when needed.
2Reliability
If repetition is performed frequently to improve transmission reliability, then transmission reliability is improved, but signaling overhead increases
Solution Approach 1:
The patent introduces a second parameter configured by the network device that indicates the number of repetitions for 16QAM modulation. By changing this repetition parameter dynamically based on channel conditions and terminal capabilities, the system can optimize the balance between transmission reliability and signaling overhead, using more repetitions when reliability is critical and fewer repetitions when overhead needs to be minimized.
Solution Approach 2:
The patent implements dynamic repetition configuration where the terminal determines the repetition count based on the configured second parameter and current channel conditions. This dynamic approach allows the system to adapt the repetition level to actual needs, avoiding excessive repetitions and associated signaling overhead while maintaining sufficient reliability.
3Loss of information
If 16QAM mode is used without repetition to reduce signaling overhead, then signaling overhead is reduced, but transmission reliability deteriorates in poor channel conditions
Solution Approach 1:
The patent implements dynamic modulation and repetition configuration where the terminal can switch between QPSK and 16QAM modes and adjust repetition counts based on channel conditions and network configuration. This dynamic adaptability allows the system to use 16QAM with minimal repetition when channel conditions are good (reducing overhead) while automatically increasing repetition or switching to QPSK when channel conditions deteriorate (maintaining reliability).
Solution Approach 2:
The patent employs feedback mechanisms where the terminal determines channel conditions and adjusts its transmission strategy accordingly. The network device configures parameters based on terminal feedback and channel state information, creating a closed-loop system that optimizes the trade-off between signaling overhead and transmission reliability through continuous adaptation.
Data Source
AI summary
The present disclosure relates to a transmission configuration method, a transmission configuration apparatus and a storage medium. The transmission configuration method is applied to a terminal, and includes: determining a parameter related to a first modulation mode; and determining a repetition parameter based on the parameter related to the first modulation mode. Determining a repetition parameter may include, in response to an uplink transmission of the terminal reaching a condition for applying the first modulation mode, determining that the repetition is not performed for the uplink transmission or in response to a downlink transmission of the terminal reaching a condition for applying the first modulation mode, determining that the repetition is not performed for the downlink transmission.