V2X Terminal Mode Determination for Shared Resource Interference
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Solution Overview
Problem
In vehicle-to-everything (V2X) communication, terminal devices in mode 3 and mode 4 sharing the same resource pool experience significant interference due to unknown time-frequency resource usage, leading to inefficient resource allocation and potential interference.
Innovation Solution
A method and apparatus for determining the terminal mode of a second device based on control information and preconfigured terminal information, allowing the first terminal device to select a candidate time-frequency resource in a shared resource pool, thereby minimizing interference by estimating the terminal mode and signal strength of the second device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If terminal devices in mode 3 and mode 4 share the same resource pool, then resource utilization is improved, but interference between terminal devices increases due to unknown time-frequency resource usage
Solution Approach 1:
The patent introduces a feedback mechanism where terminal devices send control information containing terminal information (mode 3 or mode 4 identifier) to other terminal devices. This feedback allows receiving terminals to know the mode of transmitting terminals, enabling them to adjust resource selection and avoid interference, thus resolving the contradiction between resource sharing and interference avoidance
Solution Approach 2:
The patent uses control information as an intermediary carrier that conveys terminal mode information between terminal devices. This intermediary mechanism enables indirect communication of resource usage intentions, allowing terminals to coordinate their resource usage without direct interaction, thereby maintaining resource pool sharing while reducing interference
2Adaptability or versatility
If terminal devices select resources autonomously in mode 4, then resource allocation flexibility is improved, but interference control capability deteriorates due to lack of coordination
Solution Approach 1:
The patent applies preliminary action by having terminal devices in mode 4 send control information with terminal information before actually transmitting data. This advance notification allows other terminals to prepare for potential interference or select alternative resources, maintaining the autonomy of mode 4 while improving interference control through proactive information sharing
Data Source
AI summary
This application provides a terminal mode obtaining method and apparatus, and a device. The method includes: obtaining, by a first terminal device, at least two types of terminal information comprising terminal information of terminal devices that can use a shared resource pool, where the shared resource pool is shared by the terminal devices in at least two types of terminal modes, and the terminal information includes a terminal mode and a terminal type; receiving control information sent by a second terminal device, where the control information indicates that the second terminal device sends data on a first time-frequency resource in a first time period in the shared resource pool; and determining, based on the control information and the terminal information, a terminal mode that is of the second terminal device and that exists when the second terminal device sends data on the first time-frequency resource.