Core Network User Plane Device Context Processing
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Solution Overview
Problem
Current data transmission methods in 3GPP communications systems are inefficient due to the need for re-establishing radio resource control connections, which increases overheads and reduces transmission efficiency, especially when devices switch to an idle state and then resume data transmission, leading to increased storage of context information and dedicated tunnel information.
Innovation Solution
A data transmission method where the core network user plane device processes uplink data based on context information obtained from identification information, using common data tunnels and retaining only necessary context information, reducing overheads and improving efficiency by directly transmitting data between the access network device and the core network user plane device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the access network device retains context information and dedicated tunnel information for each terminal device to enable quick connection resumption, then connection resumption speed is improved, but information storage amount increases and information redundancy is caused
Solution Approach 1:
The patent extracts and removes the dedicated tunnel information retention requirement from the access network device. Instead of storing both context information and dedicated tunnel information, the system only retains context information in the access network device while using a common data tunnel for all terminal devices. This extraction eliminates the redundant dedicated tunnel information storage while preserving connection resumption capability.
Solution Approach 2:
The patent implements a common data tunnel that serves multiple terminal devices simultaneously, replacing the previous dedicated tunnel approach. This common tunnel performs the universal function of data transmission for all terminal devices, eliminating the need for each device to have its own dedicated tunnel information stored in the access network device, thereby reducing information storage requirements while maintaining functionality.
2Reliability
If the terminal device re-establishes radio resource control connection to transmit data after switching to idle state, then connection reliability is ensured, but transmission overhead increases and transmission efficiency decreases
Solution Approach 1:
The patent applies preliminary action by pre-retaining context information in the access network device before the terminal device needs to resume data transmission. This context information includes necessary parameters for quick connection setup. When data transmission is needed, the terminal device can quickly resume the connection using this pre-retained context information without performing a full re-establishment procedure, thus maintaining reliability while improving efficiency.
3Stability of the object's composition
If tens of instructions are required to establish radio resource control connection for small packet data transmission, then connection stability is achieved, but transmission overhead increases significantly
Solution Approach 1:
The patent extracts and removes the requirement for extensive connection establishment instructions when transmitting small packets of data. By retaining context information in the access network device, the system eliminates the need for tens of instructions to re-establish connections for small data packets. The terminal device can directly transmit small packets using the pre-retained context information, significantly reducing transmission overhead while maintaining connection stability through the use of a common data tunnel.
Data Source
AI summary
A data transmission method and a communications apparatus are provided. One data transmission example method includes that a core network user plane device receives a first data packet sent by an access network device, where the first data packet includes uplink data of a terminal device and identification information of the terminal device. The core network user plane device obtains context information of the terminal device based on the identification information of the terminal device. The core network user plane device processes the uplink data based on the context information of the terminal device.