Uplink Scheduling Resource Configuration for Logical Channel Prioritization
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Solution Overview
Problem
In conventional communications systems, ensuring quality of service (QoS) for logical channels with different priority requirements is challenging, as round-robin scheduling can fail to meet high-priority needs while neglecting low-priority services, and existing methods like token bucket mechanisms inefficiently use shared transmission parameters.
Innovation Solution
A method where a terminal device determines data transmission priorities for logical channels based on physical communication characteristics and uplink scheduling resource information, loading data into MAC PDUs accordingly to prioritize high-priority channels and optimize resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If round robin scheduling is used, then all logical channels are served equally, but quality of service of high-priority services cannot be satisfied
Solution Approach 1:
The patent applies local quality by assigning different data transmission priorities to different logical channels based on their QoS requirements. High-priority logical channels are given higher transmission priorities, allowing them to be transmitted preferentially, while low-priority channels receive lower priorities. This resolves the contradiction by making the scheduling system unequal in a controlled manner that satisfies QoS requirements while still serving all channels.
2Reliability
If high-priority services are always satisfied preferentially, then QoS of high-priority services is ensured, but low-priority services are not satisfied for a long time
Solution Approach 1:
The patent implements dynamic scheduling by determining data transmission priorities based on the physical communication characteristics of the current transmission resource. When the physical communication characteristic matches a logical channel's required characteristic, that channel's priority is increased. This dynamic adjustment ensures high-priority services are satisfied when resources are available while still providing opportunities for low-priority services when their specific resource characteristics become available, reducing their waiting time.
3Device complexity
If data packets with different QoS requirements are loaded into one MAC PDU with same transmission parameter, then transmission is simplified, but it is difficult to match service with resource
Solution Approach 1:
The patent applies local quality by associating specific physical communication characteristics with different logical channels. Each logical channel is configured with required physical communication characteristics (such as subcarrier spacing, cyclic prefix length), and when a MAC PDU is constructed, the system checks whether the available transmission resource's characteristics match the requirements of the logical channels being transmitted. This allows differentiated service-resource matching within a unified MAC PDU transmission framework, resolving the contradiction between transmission simplicity and matching capability.
Data Source
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AI summary
The present invention discloses a data packet transmission method. A terminal device receives uplink scheduling resource configuration information sent by a base station, where the uplink scheduling resource configuration information includes information used to indicate an uplink scheduling resource to be used by the terminal device and information used to indicate a physical communication characteristic of the uplink scheduling resource; the terminal device determines a data transmission priority corresponding to each of N logical channels; the terminal device loads data on M logical channels in the N logical channels into a media access control protocol data unit (MAC PDU) based on the data transmission priority corresponding to each of the N logical channels; and the terminal device sends the MAC PDU to the base station on the uplink scheduling resource by using the physical communication characteristic of the uplink scheduling resource. Embodiments of the present invention further provide a device. According to the embodiments of the present invention, transmission of data on a logical channel with a high priority is ensured, and a waste of resources is avoided, thereby matching a resource with a service to the utmost.