5G Data Transmission via NAS PDU Attribute Embedding
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Solution Overview
Problem
In the 5G mobile communication system, there is a challenge in transmitting small data while effectively indicating associated information such as QoS flow, PDU session, network slice, and terminal identification, as existing protocols lack mechanisms to smoothly convey these details.
Innovation Solution
A data transmission method and device that transmit and receive data along with attribute information like QoS flow, PDU session, network slice, and terminal identification, using specific PDU structures and headers within the RRC and NAS protocols, allowing the network to establish or modify path configurations for smooth data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If small data is transmitted through the control plane in 5G system, then data transmission is achieved, but the associated information (QoS flow, PDU session, network slice, terminal identification) cannot be effectively indicated
Solution Approach 1:
The patent embeds attribute information (QoS flow, PDU session, network slice, terminal identification) within the NAS PDU structure itself, creating a nested information architecture where control plane messages contain both data and its associated attributes in an organized hierarchical manner
Solution Approach 2:
The NAS PDU serves as an intermediary structure that carries both the small data and its associated attribute information through the control plane, enabling effective indication of QoS flow, PDU session, network slice, and terminal identification without requiring separate signaling messages
2Adaptability or versatility
If bearer information is carried in LTE control plane transmission, then data transmission is achieved, but 5G system lacks equivalent mechanism for indicating associated information
Solution Approach 1:
The patent transitions from LTE's bearer information parameter to 5G's attribute information parameters (QoS flow, PDU session, network slice, terminal identification) by modifying the information structure within the NAS PDU, maintaining adaptability to 5G architecture while preserving the essential function of indicating data attributes
Solution Approach 2:
The NAS PDU structure is designed to serve multiple functions: carrying small data, indicating QoS flow information, PDU session information, network slice information, and terminal identification, thereby replacing the LTE bearer information mechanism with a universal 5G-compatible structure
Data Source
AI summary
Disclosed in the present invention are a data transmission method and device, and a computer storage medium, the method comprising: a terminal transmits data and attribute information corresponding to the data to a network; and the network transmits data and attribute information corresponding to the data to the terminal, the attribute information corresponding to the data comprising at least one of the following: quality of service (QoS) stream information, protocol data unit (PDU) session information, network slice information, external network information for data transmission and identification information of the terminal.