QoS Control for XR Services via PDU Set Mapping
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Solution Overview
Problem
Existing communication technologies struggle to guarantee quality of service (QoS) characteristics for service data flows (SDFs) due to the absence of solutions for processing packet data units (PDUs) without extension headers, which are necessary for identifying PDU sets.
Innovation Solution
A method and apparatus that map PDUs without extension headers to PDU sets, enabling QoS control by using PDU set information such as sequence numbers, start/end PDUs, PDU sequence numbers, PDU set importance, and size, allowing unified QoS control across PDUs within a time window.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If PDU sets are used to identify service data flows for QoS control, then QoS characteristics can be guaranteed, but PDUs without extension headers cannot be processed
Solution Approach 1:
The patent segments the PDU structure by introducing an extension header that specifically identifies PDU set membership. This segmentation allows the system to distinguish between PDUs that belong to a PDU set (with extension header) and those that don't (without extension header), enabling selective processing strategies for different PDU types while maintaining overall QoS control.
Solution Approach 2:
The extension header acts as an intermediary element that carries PDU set identification information. This intermediary allows the network to track and control PDUs belonging to the same service data flow even when they are segmented across multiple packets, resolving the contradiction between maintaining QoS guarantees and handling various PDU formats.
2Reliability
If extension headers are added to PDUs to identify PDU sets, then QoS control is enabled, but PDU structure complexity increases
Solution Approach 1:
The extension header is applied locally only to PDUs that require PDU set identification, rather than adding complexity to all PDUs universally. This local quality approach ensures that QoS control is enabled where needed while keeping the overall PDU structure simple for cases where extension headers are not required.
Solution Approach 2:
The patent applies the extension header partially - only to PDUs that are part of a PDU set requiring QoS control. This partial action avoids the excessive complexity that would result from adding extension headers to all PDUs, while still achieving the necessary QoS control functionality for relevant traffic flows.
3Reliability
If PDUs are mapped to PDU sets for unified QoS control, then service quality is improved, but processing overhead increases
Solution Approach 1:
The extension header is prepared in advance within each PDU to indicate PDU set membership. This preliminary action allows receiving nodes to immediately identify and group PDUs into their respective PDU sets without requiring complex post-reception analysis, thereby reducing processing overhead while maintaining unified QoS control.
Solution Approach 2:
Each PDU carries its own extension header with embedded PDU set identification information, enabling self-service identification and grouping. This eliminates the need for external tracking mechanisms or complex processing to determine PDU set membership, reducing processing overhead while ensuring accurate QoS control.
Data Source
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AI summary
The present disclosure relates to a QoS control method and apparatus, and a communication device, a communication system and a storage medium. The method comprises: receiving a first PDU, wherein the first PDU belongs to a first SDF; determining that the first PDU has no extended packet header, wherein the extended packet header is used for identifying a PDU set; and mapping the first PDU to a first PDU set. By means of the solution of the present disclosure, the QoS characteristic of an SDF in XRM and interactive media services is ensured.