PSCCH Resource Allocation for Flexible NR V2X Control Signaling
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Solution Overview
Problem
In the new radio (NR) V2X system, the fixed PSCCH time-frequency resource in LTE-V2X cannot meet the diverse service requirements of terminal services, necessitating a flexible configuration of PSCCH time-frequency resources.
Innovation Solution
A communication method that allows a terminal apparatus to determine PSCCH time-frequency resources based on resource pool configuration information and the format of the control information, enabling flexible allocation of PSCCH frequency domain resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed PSCCH time-frequency resource is used as in LTE-V2X, then the system structure is simple and easy to implement, but it cannot meet the diverse service requirements of terminal services in NR V2X
Solution Approach 1:
The patent applies dynamics by making the PSCCH frequency domain resource configurable rather than fixed. The network device can dynamically adjust the frequency domain resource parameters (such as bandwidth, subcarrier spacing) according to different service requirements, allowing the system to adapt from simple to complex configurations as needed while maintaining implementation feasibility through standardized configuration procedures
2Adaptability or versatility
If the PSCCH time-frequency resource is made flexible to meet diverse service requirements, then service adaptability is improved, but the complexity of resource configuration and management increases
Solution Approach 1:
The patent applies parameter changes by introducing configurable parameters for PSCCH frequency domain resources, including bandwidth, subcarrier spacing, and resource block allocation. These parameters can be adjusted according to service requirements while maintaining a standardized configuration interface, allowing flexibility without proportionally increasing operational complexity
Solution Approach 2:
The patent segments the resource configuration into separate controllable parameters (frequency domain resources, time domain resources, bandwidth, subcarrier spacing). This segmentation allows independent optimization of each parameter according to service needs while simplifying the overall configuration management through modular parameter settings
Data Source
AI summary
This application provides example communication methods and example terminal apparatuses. One example method includes obtaining, by a first terminal apparatus, resource pool configuration information, where the resource pool configuration information includes information about a physical sidelink control channel (PSCCH) time domain resource. The first terminal apparatus can then determine a PSCCH frequency domain resource based on the resource pool configuration information and a format of control information. The first terminal apparatus can then send the control information to a second terminal apparatus, where the control information is carried on a PSCCH time-frequency resource, and where the PSCCH time-frequency resource includes the PSCCH time domain resource and the PSCCH frequency domain resource.