Dynamic Link Adaptation for V2X Message Transmission
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Solution Overview
Problem
Current V2X message communication systems face challenges in dynamically changing link adaptation parameters, such as modulation and coding schemes, in response to varying link quality and interference levels, which affects the efficiency of V2X message transmission in wireless communication systems.
Innovation Solution
A method and apparatus for a user equipment (UE) to simultaneously receive and apply link adaptation parameters from multiple cell groups, allowing for dynamic adjustment of modulation and coding schemes and frequency resource allocation based on real-time link quality and traffic load, enabling efficient V2X message transmission across varying cell groups.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If link adaptation parameters are changed through MCCH modification period/notification mechanism, then system stability is maintained, but dynamic adaptation to varying link quality and interference levels is difficult
Solution Approach 1:
The patent enables dynamic changing of link adaptation parameters for V2X messages by allowing the network to update parameters such as modulation and coding scheme, frequency resource allocation, and power control settings in real-time based on current link quality and interference conditions, moving from static periodic updates to dynamic adaptive updates
Solution Approach 2:
The patent changes the parameters of link adaptation dynamically by allowing the network to modify modulation and coding schemes, frequency resources, and power settings for V2X messages based on measured link quality and interference levels, enabling the system to adapt to varying channel conditions
2Reliability
If V2X message transmission uses conventional MBMS manner, then coverage extension is achieved, but timely adaptation to time varying link quality and interference level is difficult
Solution Approach 1:
The patent implements feedback mechanisms where the network monitors link quality and interference levels for V2X messages and uses this feedback information to dynamically adjust link adaptation parameters, ensuring timely response to changing channel conditions while maintaining reliable transmission
3Productivity
If single cell group transmits V2X message, then transmission simplicity is maintained, but adaptation to varying traffic load and link conditions is limited
Solution Approach 1:
The patent segments the transmission system into multiple cell groups that can independently transmit V2X messages with different link adaptation parameters optimized for their specific traffic loads and link conditions, allowing parallel optimized transmissions rather than a single unified transmission
Data Source
AI summary
Provided are a vehicle-to-everything (V2X) message communication method performed by a terminal in a wireless communication system, and a device using the method. The method simultaneously receives link adaptation parameters for each of a plurality of cell groups, and receives a V2X message from each of the plurality of cell groups by applying the corresponding link adaptation parameters.