Sidelink Relay Resource Configuration via UE Information Reporting
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Solution Overview
Problem
The challenge in the Internet of Vehicles system is how to obtain the configuration of Radio Bear (RB) and/or transmission resources for relay services when remote terminals communicate with network devices through relay terminals.
Innovation Solution
The terminal device reports first sidelink UE information to the network device, which includes destination addresses, relay types, and interested frequency points, allowing the network device to configure RB and transmission resources for relay services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device reports sidelink UE information to obtain RB configuration for relay services, then the configuration can be obtained, but the signaling overhead increases
Solution Approach 1:
The patent reuses the existing sidelink UE information reporting mechanism, which was originally designed for direct terminal-to-terminal communication, and extends it to support relay services. The terminal device reports the same type of information (destination addresses, frequency points, etc.) for both direct and relay services, allowing the network device to allocate resources using the existing framework without requiring separate signaling procedures.
Solution Approach 2:
The terminal device autonomously determines when to report sidelink UE information based on its own service requirements. When the terminal needs relay service resources, it initiates the reporting itself without requiring the network to continuously query or configure separate reporting mechanisms, thereby reducing unnecessary signaling while ensuring resources are obtained when needed.
2Adaptability or versatility
If the network device allocates transmission resources based on reported information, then resource allocation flexibility improves, but the complexity of resource management increases
Solution Approach 1:
The patent maintains homogeneous resource management procedures by treating relay services and direct sidelink services uniformly. The network device uses the same resource allocation logic, the same information elements (destination addresses, frequency points, resource types), and the same configuration messages for both service types. This homogeneity allows the network to manage diverse services through a single unified framework, improving flexibility without proportionally increasing complexity.
3Ease of operation
If the terminal device selects resources in resource pool for relay service, then autonomous operation improves, but resource allocation efficiency decreases
Solution Approach 1:
The network device performs preliminary resource allocation by granting specific resources to the terminal device for relay services based on reported sidelink UE information. This preliminary action provides the terminal with a configured resource pool it can autonomously select from, combining network-guided efficiency with terminal autonomy. The terminal doesn't need to blindly search the entire system resource pool but can efficiently select from pre-allocated relay service resources.
Data Source
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AI summary
Provided in the embodiments of the present application are a wireless communication method, a terminal device, and a network device. The method comprises: reporting, to a network device, first sidelink UE information which corresponds to at least one relay service, such that the network device can obtain, according to the first sidelink UE information, an RB which corresponds to the relay service and/or a configuration of a transmission resource.