PDU Set Scheduling Using Multi-Occasion QoS Allocation
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently scheduling data transmission and reception for Protocol Data Units (PDU) sets, particularly in scenarios requiring quality of service (QoS) handling for extended reality (XR) or media services, where data traffic is grouped into PDU sets like frames, video slices, or tiles, without effective PDU set-based scheduling solutions.
Innovation Solution
A method and apparatus for PDU set-based scheduling, where scheduling information is used to determine multiple occasions for data transmission or reception of PDUs within a PDU set, utilizing downlink control information (DCI), radio resource control (RRC) messages, and other L2 signaling to manage QoS requirements, HARQ processes, and RNTI indicators for efficient data handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional scheduling methods are used for data transmission, then the scheduling process is simple, but the data transmission efficiency and reliability are insufficient for PDU sets requiring QoS handling
Solution Approach 1:
The patent segments the scheduling process into multiple independent occasions (first occasion, second occasion, etc.) for transmitting different PDUs within a PDU set. Each occasion can be independently configured with specific time-frequency resources, allowing flexible and efficient scheduling of multiple PDUs without requiring complex centralized scheduling for the entire set.
Solution Approach 2:
The patent implements dynamic scheduling where the network device can flexibly determine the number of occasions, their timing, and resource allocations based on real-time channel conditions, QoS requirements, and traffic characteristics. This dynamic approach adapts to varying radio capacities and service requirements while maintaining manageable scheduling complexity through standardized procedures.
2Reliability
If multiple occasions are allocated for PDU transmission, then the reliability of data delivery is improved, but the scheduling overhead and system complexity increase
Solution Approach 1:
The patent combines multiple PDU transmissions into a unified PDU set structure with a single scheduling decision. The network device determines multiple transmission occasions for the PDU set using one scheduling process, and the UE receives and processes the scheduling information in a standardized manner, reducing overall scheduling overhead compared to individually scheduling each PDU.
Solution Approach 2:
The patent uses template-based occasion configurations where the basic structure and parameters of transmission occasions can be replicated and adapted. Once an occasion configuration is established, it can be copied and modified for subsequent occasions, reducing the scheduling overhead required to manage multiple transmission opportunities while maintaining flexibility.
3Measurement precision
If scheduling information is provided for each PDU individually, then the scheduling precision is high, but the signaling overhead increases significantly
Solution Approach 1:
The patent creates a universal scheduling information structure that can handle multiple PDUs within a PDU set through a single scheduling message. The scheduling information includes parameters that apply to the entire PDU set (such as occasion timing, resource allocations, QoS parameters), allowing one scheduling message to control multiple transmissions with the same precision as individual scheduling would provide, but with significantly reduced signaling overhead.
Data Source
AI summary
A method for a user equipment (UE), comprising: acquiring scheduling information in a scheduling occasion for at least one protocol data unit (PDU) in a PDU set, wherein the scheduling information is used for determining a plurality of occasions, each of the plurality of occasions corresponds to data transmission or reception of one or more PDU in the PDU set; and performing data transmission or reception for each PDU in the PDU set via a corresponding occasion of the plurality of occasions determined by the scheduling information.