Dynamic Transmission Parameter Configuration for Group Communication
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Solution Overview
Problem
Fixed transmission parameters in group communication, such as those used in vehicle platoons, cannot adapt to changing communication environments, leading to wireless resource redundancy and inefficiency due to varying relative speeds and mobility characteristics.
Innovation Solution
A method and apparatus for dynamically configuring transmission parameters, including DMRS patterns and frequency domain resources, based on real-time measurements of block error rate, channel quality, signal quality, and geographic information, allowing for flexible adaptation to different communication scenarios and efficient resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed DMRS pattern is used in group communication, then the transmission parameter configuration is simple, but it cannot adapt to changing communication environments leading to resource waste
Solution Approach 1:
The patent implements dynamic transmission parameter configuration where the group head device adjusts DMRS patterns and frequency domain resources based on real-time communication environment changes. The system transitions from static fixed parameters to dynamic adaptive parameters that change according to relative speeds, channel conditions, and mobility characteristics of group members.
Solution Approach 2:
The patent changes transmission parameters (DMRS patterns, frequency domain resources) based on measured communication environment indicators such as block error rate, channel quality, signal quality, and geographic information. This allows the system to adapt to different communication scenarios by modifying parameter values rather than using fixed configurations.
2Reliability
If four DMRS symbols are used to resist Doppler frequency shift at high speeds, then the communication reliability improves, but resource waste occurs when relative speed is low
Solution Approach 1:
The patent dynamically adjusts the DMRS pattern parameters based on measured communication environment indicators. When relative speed is high and Doppler shift is severe, the system uses more robust DMRS patterns (e.g., four DMRS symbols) to maintain communication reliability. When relative speed is low, the system reduces DMRS overhead by using simpler patterns, thereby reducing wireless resource waste.
Solution Approach 2:
The system transitions from static DMRS configuration to dynamic configuration that adapts to changing mobility conditions. The group head continuously monitors communication environment and adjusts DMRS patterns in real-time to match current relative speeds and channel conditions.
3Productivity
If transmission parameters are dynamically adjusted based on real-time measurements, then communication efficiency improves, but the complexity of parameter configuration increases
Solution Approach 1:
The group head device autonomously performs real-time measurements of communication environment (block error rate, channel quality, signal quality, geographic information) and independently determines optimal transmission parameters without external intervention. This self-service mechanism improves communication efficiency while the complexity is confined to the group head rather than affecting all devices.
Solution Approach 2:
The system implements a feedback loop where the group head measures communication environment indicators, adjusts transmission parameters based on these measurements, and continues monitoring to further optimize parameters. This closed-loop feedback mechanism enables continuous improvement of communication efficiency while managing complexity through automated decision-making.
Data Source
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AI summary
This application relates to a transmission parameter configuration method and apparatus. The method is as follows: A first device determines a transmission parameter used for group communication, and sends information including the transmission parameter to a second device in a group through a broadcast message, where the first device is a management device of the group, and the transmission parameter includes a frequency domain resource and/or a DMRS pattern that are/is used for group communication of the group. In this way, the first device implements flexible configuration of the transmission parameter used for group communication, thereby improving utilization of radio resources.