QoS Flow Classification for Reliable PDU Session Transmission
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In NR communication networks, the lack of identification of application message categories and sources leads to reduced availability and reliability of application messages, affecting user experience due to incomplete or misidentified transmissions.
Innovation Solution
The method and apparatus determine the category of PDU sessions through indication information in the information frame format, enabling accurate identification of application messages and enhancing the integrity of message transmission by identifying application message sequences, ends, and segment numbers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If QoS parameters are configured at PDU session and QoS flow levels without application message category identification, then the system complexity is reduced and ease of operation is improved, but the reliability and integrity of application message transmission deteriorate
Solution Approach 1:
The patent segments the QoS identification mechanism by introducing category identification information that divides application messages into different categories (e.g., URLLC, eMBB, mMTC). This segmentation allows the system to maintain simple overall QoS configuration while providing detailed categorization at the application message level, resolving the contradiction between operational simplicity and transmission reliability.
Solution Approach 2:
The patent applies preliminary action by pre-configuring category identification information and QoS parameter associations before actual message transmission. The base station pre-establishes the mapping between application message categories and QoS parameters, so that when messages are transmitted, the appropriate QoS handling is automatically applied without complex real-time decision-making, thus maintaining both simplicity and reliability.
2Device complexity
If multiple PDUs are mapped to a single application message without category identification, then the device complexity is reduced, but the measurement precision of message integrity deteriorates
Solution Approach 1:
The patent implements feedback mechanisms where the base station receives acknowledgment information from terminals about whether application messages were successfully received. This feedback loop enables the base station to detect missing or incorrectly received messages and trigger retransmission, thereby achieving precise message integrity measurement without requiring complex PDU-level tracking at the terminal side.
Solution Approach 2:
The patent introduces category identification information as an intermediary element that bridges the gap between simple PDU mapping and precise message integrity measurement. This intermediary carries category information that enables the base station to identify and track specific application messages, providing measurement precision without increasing terminal device complexity.
3Loss of information
If application message categories and sources are not identified, then the information transmission overhead is reduced, but the loss of information about message integrity and availability increases
Solution Approach 1:
The patent extracts only the essential category identification information from application messages rather than transmitting complete message content or detailed metadata. By taking out just the necessary category field, the system maintains low information overhead while still enabling the base station to identify message types and apply appropriate QoS handling, thus preserving message availability without excessive overhead.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
Provided are a quality of service flow transmission method and apparatus, a base station, a terminal, and a storage medium. The quality of service flow transmission method includes the following: acquiring at least one protocol data unit, PDU, session sent by a core network, where the information frame format of the PDU session carries indication information; and determining the category to which each PDU session belongs according to the indication information.