V2X Data Feedback Resource Determination for Transmission Reliability
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Solution Overview
Problem
Existing internet of vehicles technologies lack a defined data feedback resource, leading to low data transmission reliability as vehicles cannot determine whether sent data is successfully received.
Innovation Solution
A method and apparatus for determining a data feedback resource, where a first terminal receives data from a second terminal, determines a feedback resource from a feedback resource pool, and sends feedback information on this resource to indicate the receiving status of the data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a vehicle sends data to another device in V2X communication without defining feedback resources, then the communication system remains simple and resource allocation is flexible, but the transmitting vehicle cannot determine whether data is successfully received, resulting in low data transmission reliability
Solution Approach 1:
The patent introduces a feedback mechanism where the receiving terminal sends feedback information to the transmitting terminal on pre-configured feedback resources. This feedback indicates whether the transmitted data was successfully received, enabling the transmitting terminal to determine transmission status and improve reliability through potential retransmissions.
Solution Approach 2:
The patent pre-configures feedback resources before data transmission occurs. The network device allocates and configures feedback resources for terminals in advance, so that when data transmission is needed, the feedback mechanism is already in place and can be immediately activated without complex real-time resource allocation.
2Reliability
If feedback resources are pre-configured for all possible transmissions, then data transmission reliability improves through feedback confirmation, but the resource pool becomes larger and system complexity increases
Solution Approach 1:
The patent configures feedback resources locally and specifically for each data transmission scenario rather than providing a universal large pool. The network device allocates feedback resources based on the specific transmission needs, terminal identities, and data characteristics, creating a tailored feedback resource configuration that minimizes unnecessary resources.
Solution Approach 2:
The patent dynamically adjusts feedback resource parameters such as time-frequency locations, resource sizes, and quantities based on transmission requirements. The network device can modify these parameters to match the actual data transmission needs, reducing the overall feedback resource pool size while maintaining sufficient feedback capability for reliable transmission.
Data Source
Figure 1A~1B
Figure 2
Figure 3A
AI summary
This application discloses a method and an apparatus for determining a data feedback resource, to resolve a problem of relatively poor data transmission reliability in an existing internet of vehicles technology. The method includes: receiving, by a first terminal, first data sent by a second terminal; determining a feedback resource of the first data, where the feedback resource of the first data is a feedback resource in a feedback resource pool; and sending feedback information of the first data to the second terminal on the feedback resource, where the feedback information is used to indicate a receiving status of the first data. Therefore, the second terminal serving as a transmit end can determine, by detecting the feedback information, whether the sent first data is successfully received, thereby improving data transmission reliability.