Secondary Connection Establishment for User Plane Data Offloading
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Solution Overview
Problem
Current communication systems face challenges in increasing data throughput in the user plane and reducing the load on primary access network devices, particularly with the rapid growth of mobile internet traffic and the need for efficient data aggregation between macro and small base stations.
Innovation Solution
A method and apparatus for establishing a secondary connection by acquiring and reporting secondary network access capability information from terminal devices, allowing primary access network devices to request and configure secondary connections with secondary access network devices, thereby improving data throughput and reducing primary network load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data is transmitted only through the primary connection, then the primary access network device can maintain control over control plane data, but the data throughput in the user plane is limited and the load on the primary access network device is high
Solution Approach 1:
The patent segments the network connection into a primary connection for control plane data and one or more secondary connections for user plane data. This allows control functions to remain centralized while data transmission is distributed across multiple connections, thereby increasing throughput without compromising control management.
Solution Approach 2:
The patent introduces a secondary access network device as an intermediary for user plane data transmission. This intermediary handles data transmission tasks, freeing the primary access network device from excessive load while maintaining overall network coordination through the primary connection for control purposes.
2Ease of operation
If the primary access network device handles all data transmission, then network control is simplified, but the load on the primary access network device increases and throughput is limited
Solution Approach 1:
The patent divides network functions by segmenting control plane operations (handled by primary access network device) from user plane data transmission (handled by secondary access network device). This segmentation enables simplified control management while simultaneously expanding data transmission capacity through additional network paths.
3Productivity
If secondary connections are established to increase throughput, then data transmission capacity improves, but the complexity of managing multiple connections increases
Solution Approach 1:
The patent uses the primary access network device as a mediator that coordinates between the terminal device and secondary access network devices. This intermediary role simplifies connection management by providing a centralized control point that handles the complexity of multiple secondary connections, while still enabling increased throughput through parallel data paths.
Data Source
AI summary
Provided are a method and an apparatus for establishing a secondary connection. The method includes: acquiring secondary network access capability information of a terminal device, where the secondary network access capability information is used to indicate a capability for the terminal device to access a secondary access network device; sending a secondary connection addition request message to a first secondary access network device, where the secondary connection addition request message is used to request addition of the first secondary access network device as a network device for transmitting data, and includes the secondary network access capability information; and receiving a confirmation message of the secondary connection addition request message sent by the first secondary access network device, where the confirmation message of the secondary connection addition request message includes first configuration information used to establish the secondary connection between the first secondary access network device and the terminal device.