V2X Sidelink Control Resource Mapping for Flexible Time-Frequency Allocation
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Solution Overview
Problem
Existing V2X communication systems lack flexibility in configuring time-frequency resources for sidelink control information transmission, leading to inefficiencies in resource utilization.
Innovation Solution
A method to flexibly configure time-frequency resources for sidelink control information transmission by using predefined relationship tables to determine the correspondence between time-domain and frequency-domain resources, allowing for dynamic allocation of resources based on specific requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If fixed sizes of time-domain and frequency-domain resources are used for sidelink control information transmission, then resource allocation is simple, but resource utilization efficiency deteriorates
Solution Approach 1:
The patent introduces dynamic resource allocation where the size of frequency-domain resources (number of resource blocks) is no longer fixed but can be flexibly configured based on actual transmission needs. The network device can dynamically adjust the resource block allocation for PSCCH transmissions, allowing the system to adapt resource usage to varying traffic conditions and improve overall resource utilization efficiency while maintaining manageable complexity through standardized procedures.
2Device complexity
If fixed time-frequency resource configuration is used for sidelink control information, then system complexity is low, but adaptability to different transmission requirements deteriorates
Solution Approach 1:
The patent enables parameter changes in resource configuration by allowing the network device to dynamically adjust the number of resource blocks allocated for PSCCH transmissions. Different parameter configurations (resource block quantities) can be selected based on specific transmission requirements such as control information payload size, channel conditions, and traffic patterns. This provides versatile adaptability while maintaining relatively low system complexity through standardized resource pool configurations and clear signaling mechanisms.
3Productivity
If flexible resource configuration is implemented for sidelink control information, then resource utilization efficiency improves, but signaling overhead increases
Solution Approach 1:
The patent employs preliminary action by pre-configuring resource pools with different resource block quantities before actual PSCCH transmissions occur. The network device can indicate which pre-configured resource pool to use through compact signaling (e.g., resource pool index indication), rather than specifying detailed resource allocations for each transmission. This approach achieves flexible resource utilization while minimizing signaling overhead by reusing pre-established configurations.
Data Source
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AI summary
This application provides a sidelink information transmission method, a communications device, and a network device, and provides a flexible configuration method used to transmit a sidelink control information resource in V2X communication. Instead of a fixed resource, a resource selected, from a resource pool used for sidelink communication, based on a first correspondence satisfied by a time-domain resource and a frequency-domain resource is used to transmit sidelink control information. In addition, time division multiplexing is performed on the resource used to transmit the sidelink control information and a resource used to transmit sidelink data, or frequency division multiplexing is performed on the resource used to transmit the sidelink control information and a resource used to transmit sidelink data, so that a first communications device can send the sidelink control information and the sidelink data to a second communications device on a flexibly configured resource.