V2X Resource Selection Excluding Conflicting Allocations
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Solution Overview
Problem
Existing D2D and V2X communication systems face reliability and security issues due to resource conflicts, where terminal devices cannot perform V2X communication when selecting certain resources that are reserved or synchronized, leading to communication failures.
Innovation Solution
A method where a terminal device determines a second resource based on configuration information and sending periods, excluding resources that cannot be used for V2X or D2D communication, to avoid conflicts and improve reliability and security by selecting an alternative resource within a data sending resource selection window.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If terminal devices independently select resources for V2X communication, then communication flexibility and autonomy are improved, but resource conflicts and communication reliability deteriorate
Solution Approach 1:
The patent introduces a resource configuration message from the access network device as an intermediary that guides terminal device resource selection. The terminal device determines the second resource based on configuration information (first resource) received from the access network device, rather than purely independent selection. This mediator approach resolves the contradiction by maintaining terminal autonomy while ensuring network-coordinated resource allocation that avoids conflicts.
2Stability of the object's composition
If terminal devices reserve selected resources for a period of time, then communication stability is improved, but resource utilization efficiency deteriorates
Solution Approach 1:
The patent implements dynamic resource reservation where the terminal device determines a second resource based on the first resource configuration and sending period. The resource reservation is not static but adapts to the actual communication needs and network conditions. The terminal device can adjust resource selection within the reserved period based on the configured sending period, making the resource reservation dynamic rather than fixed, thus improving both stability and efficiency.
3Ease of operation
If terminal devices select resources without considering configuration information, then resource selection simplicity is improved, but resource conflicts and communication security deteriorate
Solution Approach 1:
The patent applies preliminary action by having the access network device pre-configure resource information (first resource) before the terminal device performs resource selection. The terminal device uses this pre-configured information to determine the second resource, avoiding conflicts with reserved or synchronized resources. This preliminary configuration step ensures that resource selection remains simple for the terminal while guaranteeing communication security through network-level resource management.
Data Source
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AI summary
A data sending method, a terminal device, an access network device, and a system are provided. The method includes: obtaining, by a terminal device, a sending period of first data; obtaining, by the terminal device, configuration information of a first resource, where the first resource cannot be used for sending the first data; determining, by the terminal device, a second resource based on the configuration information of the first resource and a sending period of the first data; and selecting, by the terminal device, a resource other than the second resource to send the first data. When selecting a resource used for V2X communications data or D2D communications data, the terminal device excludes the second resource that cannot be used for the V2X communications data or the D2D communications data, so as to avoid a conflict between the second resource and the resource selected by the terminal device for sending the first data, and improve reliability and security of D2D communication and V2X communication.