LTE/NR Sidelink Scheduling for Dual-Connectivity Terminals
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Solution Overview
Problem
Existing technologies struggle to implement cross-carrier scheduling between different types of network devices using different transmission technologies, such as LTE and 5G, leading to costly and inconvenient updates and the inability to efficiently manage LTE-V2X and NR-V2X modules in a dual-connectivity network architecture.
Innovation Solution
A data transmission method that allows terminals to receive sidelink transmission configuration information from network devices, enabling scheduling of LTE or NR sidelinks based on the terminal's processing capabilities, and supporting cross-link data transmission between LTE and NR networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cross-carrier scheduling is implemented between LTE and 5G network devices, then the ability to schedule different types of sidelink data transmission is improved, but the device complexity increases
Solution Approach 1:
The patent segments the scheduling function by introducing separate indication fields in DCI formats: a first indication field for LTE sidelink scheduling and a second indication field for NR sidelink scheduling. This segmentation allows each field to independently indicate scheduling information for its respective type, enabling cross-carrier scheduling between different network devices without requiring a completely new scheduling mechanism, thus managing complexity while improving adaptability.
Solution Approach 2:
The patent implements multi-functionality by designing the DCI structure to support both LTE and NR sidelink scheduling within the same downlink control information. The universal DCI format can indicate scheduling for either LTE or NR sidelinks depending on the terminal's capability and network configuration, allowing a single scheduling mechanism to handle multiple types of sidelink data transmission across different network technologies.
2Adaptability or versatility
If terminals support both LTE-V2X and NR-V2X modules with dual-connectivity, then the adaptability and functionality are improved, but the cost and complexity of updates increase
Solution Approach 1:
The patent introduces dynamic capability indication mechanisms where terminals can report their processing capabilities and supported features to the network. The network can then dynamically adjust scheduling configurations based on the terminal's actual capabilities. This dynamic approach allows terminals to support both LTE-V2X and NR-V2X modules without requiring rigid, expensive hardware updates, as the system adapts to the terminal's existing capabilities through flexible signaling and configuration.
Solution Approach 2:
The patent utilizes parameter changes in the DCI formats and RRC configurations to enable cross-link scheduling. By modifying parameters such as the indication fields in DCI, resource allocation parameters, and scheduling configuration parameters, the system can support both LTE and NR sidelink scheduling without requiring fundamental hardware changes. This allows network devices to be updated through software and configuration changes rather than expensive hardware replacements.
Data Source
AI summary
This application discloses a data transmission method and a corresponding terminal, and relates to the field of the Internet of Vehicles or intelligent connected vehicle communications technologies. In this application, a first terminal processes data sending or receiving on a sidelink based on processing capabilities of the first terminal for scheduling different types of sidelinks by different types of network devices, and may determine, based on an actual processing capability and scheduling requirements of the different types of network devices on transmission of different types of sidelink data of a terminal, whether to accept the scheduling.