Sidelink Configuration Index Updates for Reliable Terminal Communication
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Solution Overview
Problem
Existing communication systems face challenges in ensuring reliable sidelink communication between terminal devices due to inflexible application of sidelink configurations by terminal devices, leading to potential misinterpretation and misapplication of configurations.
Innovation Solution
The proposed solution involves updating the index corresponding to the identifier of a second terminal device, allowing the first terminal device to apply a sidelink configuration based on an updated index, which includes determining the timestamp of the sidelink configuration and performing communication accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the terminal device applies sidelink configurations based on fixed index mapping, then the configuration application is simple, but the reliability of sidelink communication deteriorates due to potential misinterpretation and misapplication
Solution Approach 1:
The patent implements dynamic index mapping where the network device can reassign indexes to terminal device identifiers through RRC reconfiguration messages. This allows the index mapping to adapt to changing communication scenarios, resolving the contradiction by making the configuration flexible rather than fixed, thereby improving reliability while maintaining operational simplicity through automated network control
Solution Approach 2:
The patent changes the mapping relationship parameter between terminal device identifiers and sidelink configuration indexes. By allowing the network device to dynamically adjust this mapping through reconfiguration messages, the system transforms from a static to a dynamic parameter setup, enabling accurate configuration application and improving communication reliability
2Adaptability or versatility
If the terminal device stores multiple sidelink configurations for different indexes, then the adaptability improves, but the device complexity increases
Solution Approach 1:
The patent makes the sidelink configuration storage structure universal by using a standardized mapping relationship between terminal device identifiers and configuration indexes. The network device manages all configuration assignments centrally, allowing the terminal device to store multiple configurations efficiently without increasing complexity, as the multi-functionality is coordinated through network control rather than distributed device intelligence
Solution Approach 2:
The network device acts as an intermediary that manages the complexity of multiple sidelink configurations. It assigns and reassigns configuration indexes to terminal device identifiers through RRC messages, thereby enabling the terminal device to adapt to different communication scenarios without bearing the complexity burden of managing multiple configurations autonomously
3Productivity
If the terminal device updates sidelink configurations dynamically, then the communication efficiency improves, but the risk of configuration errors increases
Solution Approach 1:
The patent implements feedback control where the network device monitors sidelink communication status and sends RRC reconfiguration messages to update index mappings dynamically. This feedback mechanism allows the system to adapt to changing conditions efficiently while maintaining configuration accuracy, as the network device has global visibility and can coordinate updates to prevent errors
Solution Approach 2:
The patent applies preliminary action by having the network device pre-assign and pre-validate sidelink configuration mappings before actual communication occurs. When updates are needed, the network device prepares and sends reconfiguration messages in advance, ensuring that configuration changes are coordinated and verified before implementation, thereby maintaining accuracy while enabling dynamic adaptation
Data Source
AI summary
This application provides a communication method and a communication apparatus. The method may be applied to a first terminal device. The method includes: sending first information to a network device, where the first information includes an identifier of a second terminal device, and the identifier of the second terminal device corresponds to a first index; sending second information to the network device, where the second information includes the identifier of the second terminal device. The index corresponding to the identifier of the second terminal device is updated, so that the first terminal device can apply the sidelink configuration corresponding to the updated index.