Sidelink Resource Scheduling via Direct Scheduling Request
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Solution Overview
Problem
Existing communication technologies lack an effective method for scheduling resources for sidelink (SL) communication, leading to increased communication latency due to frequent interactions between terminal devices and resource scheduling apparatuses.
Innovation Solution
A resource scheduling method where a terminal device sends a scheduling request using a target resource to a resource scheduling apparatus, which configures a sidelink sending resource based on the request and target resource, allowing for direct scheduling without requiring a buffer status report from the terminal device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the terminal device sends SR and BSR to the network side device for uplink resource scheduling, then the network side device can allocate resources according to data volume and priority, but the communication latency increases due to multiple interaction steps
Solution Approach 1:
The patent extracts the BSR reporting step from the resource scheduling process. The terminal device directly sends SR to request uplink resources without first sending BSR to report buffer status. The network side device allocates resources based on the SR and pre-configured information, eliminating the unnecessary BSR interaction step and reducing communication latency.
Solution Approach 2:
The network side device performs preliminary configuration by pre-configuring uplink grant resources and scheduling parameters before the terminal device needs to send data. When the terminal sends SR, the network side device can immediately allocate resources based on pre-prepared configuration information, avoiding the need for real-time BSR processing and reducing scheduling delay.
2Adaptability or versatility
If the existing technology uses SR and BSR for uplink scheduling, then resource allocation can be done according to data volume and priority, but no effective solution exists for scheduling SL resources
Solution Approach 1:
The patent applies the existing SR-based scheduling mechanism to a new scenario - sidelink (SL) resource scheduling. The terminal device uses the same SR procedure to request both uplink and sidelink resources. The network side device extends the scheduling function to handle both uplink grants and sidelink grants, making the scheduling system universal and applicable to multiple communication scenarios without sacrificing reliability.
Data Source
AI summary
The embodiments of this application provide a resource scheduling method and apparatus, and relate to the field of communications technologies, to resolve the problem that how to schedule a SL resource is not provided in the related technologies. The method includes: when data is needed to be sent on a SL, or a BSR of a SL triggers a scheduling request SR, sending a SR to a network side device by using a target resource, where the SR is used to request the network side device to configure a SL sending resource for the terminal device. The embodiments of this application are used to schedule a SL sending resource.