NSA Dual Connectivity Setup for Incorrect Terminal Capability Reports
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Solution Overview
Problem
In 5G networks with NSA architecture, terminal devices reporting incorrect dual connectivity capabilities can lead to abnormal service drops and compromised communication quality due to unsupported ENDC or DCNR capabilities, particularly for overheat protection exceptions.
Innovation Solution
A network configuration method where a mobility management device or network device actively indicates not to query for unsupported dual connectivity capabilities, ensuring initial context information is set up only for supported network types, thereby avoiding NSA dual connectivity configurations that could cause service drops.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the terminal device reports incorrect dual connectivity capability information, then the network device may configure unsupported dual connectivity, but this leads to service drops and compromised communication quality
Solution Approach 1:
The mobility management device performs preliminary verification of terminal capability information before the network device configures dual connectivity. By checking whether the terminal truly supports the reported dual connectivity capability, the system prevents configuration of unsupported features, thereby avoiding service drops while maintaining adaptability
Solution Approach 2:
The system implements a feedback mechanism where the mobility management device verifies terminal capability information and provides correction feedback to the network device. When capability information is found to be incorrect, the mobility management device sends indication information to prevent the network device from configuring unsupported dual connectivity, ensuring reliable communication
2Measurement precision
If the network device queries for dual connectivity capability information, then configuration accuracy improves, but this increases signaling overhead and network complexity
Solution Approach 1:
The patent extracts the capability verification function from the network device and relocates it to the mobility management device. The mobility management device independently verifies terminal capability information using stored subscription data, eliminating the need for additional capability query signaling between the network device and terminal, thus reducing network complexity while maintaining accuracy
Solution Approach 2:
The mobility management device acts as an intermediary between the terminal and network device. It verifies terminal capability information against stored subscription information and sends indication information to the network device to prevent configuration of unsupported dual connectivity. This intermediary role eliminates the need for direct capability querying, reducing signaling overhead
Data Source
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AI summary
A network configuration method and a communication apparatus are provided. The method includes: if a terminal device has subscribed to NSA dual connectivity and first capability information indicates that the terminal device does not support first dual connectivity, sending a second message to a network device, to indicate not to query for second capability information of the terminal device and to set up initial context information of the terminal device; and receiving a third message from the network device, where the third message includes the initial context information set up by the network device, and the initial context information includes network configuration information that is of the terminal device and that corresponds to a second-type network device, and does not include network configuration information that is of the terminal device and that corresponds to a first-type network device. The dual connectivity includes the first dual connectivity and second dual connectivity. The first dual connectivity is dual connectivity in which both a master base station and a secondary base station of the terminal device are first-type network devices. The second dual connectivity is dual connectivity in which a master base station of the terminal device is a second-type network device and a secondary base station is a first-type network device. According to this application, communication quality of the terminal device can be ensured.