Sidelink Duplication Transmission Using Multiple RLC Entities
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Solution Overview
Problem
Existing data transmission methods for sidelink (SL) in IIoT and TSN services face challenges in achieving high reliability and low latency, with existing duplication transmission solutions limited to traditional cellular networks and lacking support for direct device-to-device communication.
Innovation Solution
A duplication transmission method and apparatus for SL that involves a first terminal device acquiring configuration information to perform a SL transmission process with a second terminal device, utilizing configuration information to enhance data transmission reliability through duplication transmission between terminal devices, including support for direct communication interfaces like PC5, and employing multiple RLC entities for data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional cellular network duplication transmission is used, then data transmission reliability is improved, but device-to-device direct communication capability is lost
Solution Approach 1:
The patent extends the duplication transmission mechanism to work in both cellular network modes and direct device-to-device communication modes. The same core technology can be applied across different communication scenarios, making the system versatile while maintaining high reliability through direct communication between terminal devices without requiring network infrastructure.
2Reliability
If single RLC entity transmission is used, then device complexity is reduced, but data transmission reliability is insufficient
Solution Approach 1:
The patent divides the transmission channel into multiple independent RLC (Radio Link Control) entities, each capable of transmitting data separately. By segmenting the transmission path into parallel RLC entities, the system achieves higher reliability through diversity without requiring complex coordination between entities, as each operates independently with its own buffering and transmission control.
3Reliability
If duplication transmission is not implemented, then device complexity is reduced, but transmission latency increases and reliability decreases
Solution Approach 1:
The patent implements preliminary action by pre-configuring multiple RLC entities and their corresponding transmission parameters before actual data transmission occurs. The system prepares duplicate transmission paths in advance, so when data needs to be transmitted, the duplication process can be activated immediately without complex real-time setup, reducing overall system complexity while maintaining high reliability and low latency.
Data Source
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AI summary
A duplication transmission method and apparatus for an SL, and a device and a storage medium, which belong to the technical field of communications. The method comprises: a first terminal device acquiring configuration information, wherein the configuration information is used for configuring a duplication transmission for an SL (410); and the first terminal device performing SL transmission with a second terminal device according to the configuration information (420). In the method, a first terminal device acquires configuration information, and performs SL duplication data transmission with a second terminal device according to the configuration information, thereby facilitating the improvement of the reliability of data transmission between terminal devices in an SL, such that more service requirements are met.