V2X Sidelink Communication Using SCI for Accurate Packet Reception
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Solution Overview
Problem
The existing V2X communication methods in the NR system face challenges in reducing packet receiving error rates and improving efficiency for receive end devices, particularly in handling different communication types such as unicast, multicast, and broadcast.
Innovation Solution
A communication method involving terminal devices and a network device that utilize sidelink control information and configuration information to identify and transmit data based on target side identifiers and communication types, enabling accurate reception and configuration of sidelink radio bearers to enhance packet reception efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If V2X communication in NR system supports multiple communication types (unicast, multicast, broadcast), then communication versatility is improved, but packet receiving error rate increases due to difficulty in identifying correct data
Solution Approach 1:
The patent introduces SCI (Sidelink Control Information) as an intermediary carrier that conveys identification information (target side identifier and communication type) between transmitting and receiving devices. This intermediary structure enables the receiving device to correctly identify and filter data packets of the intended communication type, thereby maintaining high reliability while supporting multiple communication types.
2Reliability
If receiving device processes all received data packets, then no data is lost, but processing time increases and efficiency decreases
Solution Approach 1:
The patent applies preliminary action by embedding identification information (target side identifier and communication type) in the SCI before data transmission. The receiving device uses this pre-provided information to quickly identify and filter relevant data packets before full processing, thus maintaining data reception completeness while significantly improving processing efficiency.
3Speed
If transmitting device sends data without detailed configuration information, then transmission speed is fast, but receiving device cannot correctly identify data type leading to errors
Solution Approach 1:
The patent extracts critical identification information (target side identifier and communication type) from the main data transmission process and places it in the SCI. This extraction allows the receiving device to quickly identify data types without slowing down the main data transmission, thus maintaining high transmission speed while ensuring accurate packet identification.
Data Source
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Figure 1B
Figure 2~3a
AI summary
Embodiments of this application relate to the wireless communication field, and provide a communication method and device. A second terminal device may receive data of a corresponding communication type based on a first target side identifier and the communication type that are included in SCI sent by a first terminal device, or the communication type included in the SCI sent by the first terminal device, to reduce a packet receiving error rate of the second terminal device, and further improve packet receiving efficiency of the second terminal device.