Uplink Resource Scheduling for URLLC and MBB Services
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Solution Overview
Problem
Current technologies lack a clear mechanism for terminal devices to efficiently apply for and transmit uplink resources when supporting both 5G and LTE communications systems, particularly for URLLC and MBB service data, leading to increased latency and conflicts in grant-free resource usage.
Innovation Solution
A resource scheduling method that allows terminal devices to use both grant-free and SR resources to transmit data or apply for uplink scheduling resources, enabling efficient transmission of URLLC and MBB service data by transmitting buffer status reports on grant-free resources and utilizing uplink scheduling grants for allocated resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the terminal device uses only grant-free resources for URLLC data transmission, then transmission latency is reduced, but resource conflicts and reliability deteriorate when both URLLC and MBB services are present
Solution Approach 1:
The patent segments the uplink transmission resources into grant-free resources for URLLC services and scheduled resources for MBB services. The terminal device separately manages these resource types, using grant-free resources exclusively for URLLC data while maintaining scheduled resource allocation for MBB services, thereby avoiding resource conflicts and ensuring reliable transmission for both service types
Solution Approach 2:
The patent implements dynamic resource allocation where the terminal device can dynamically switch between grant-free transmission for URLLC and scheduled transmission for MBB based on service requirements. The network device dynamically adjusts resource allocation decisions, selecting between grant-free and scheduled resources based on current traffic conditions and service priorities
2Reliability
If the terminal device uses scheduled resource allocation for both URLLC and MBB services, then resource conflicts are avoided, but transmission latency increases violating URLLC requirements
Solution Approach 1:
The network device performs preliminary action by pre-configuring grant-free resources for URLLC services before actual data transmission occurs. This advance preparation enables the terminal device to immediately use pre-allocated grant-free resources for URLLC data without waiting for scheduling decisions, thereby reducing latency while maintaining resource allocation reliability
Solution Approach 2:
The patent applies local quality by assigning different resource allocation qualities to different service types: grant-free resources with immediate access characteristics are allocated specifically for URLLC services requiring low latency, while scheduled resources with coordinated allocation are used for MBB services, ensuring each service receives the appropriate resource quality for its requirements
3Productivity
If the terminal device transmits both URLLC and MBB service data on grant-free resources, then resource utilization is optimized, but transmission conflicts and reliability deteriorate
Solution Approach 1:
The patent segments the data transmission by service type, directing URLLC service data to grant-free resources and MBB service data to scheduled resources. This segmentation prevents transmission conflicts between different service types while maintaining high resource utilization efficiency within each resource category by matching resource characteristics to service requirements
Data Source
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AI summary
Embodiments of this application provide a resource scheduling method and a device. The method includes: transmitting, by a terminal device, at least first indication information to a network device on a pre-allocated uplink resource, where the first indication information is used to indicate a data volume of to-be-transmitted data of the terminal device; and transmitting the to-be-transmitted data on an uplink resource if the terminal device receives at least second indication information transmitted by the network device, where the second indication information is used to indicate the uplink resource allocated by the network device to the terminal device. In the embodiments of this application, when to-be-transmitted data is MBB service data, the terminal device may transmit a data volume of the MBB service data to the network device on a grant-free resource, so that the network device allocates an uplink resource to the terminal device and the terminal device transmits the MBB service data on the uplink resource, thereby implementing a mechanism for the terminal device to apply for an uplink resource or transmit data by using the grant-free resource.