MPS Indicator Update via Re-Registration in Mobile Networks
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Solution Overview
Problem
Terminal devices that do not support updating multimedia priority service (MPS) indicators using configuration update command (CUC) messages experience incorrect access attempts due to protocol mismatches, leading to potential connection rejections and failure to obtain high-priority services.
Innovation Solution
A network device triggers terminal devices to update MPS indicators by sending a first message for re-registration when subscription information changes, even if the terminal device does not support CUC messages, ensuring the MPS indicator is updated during the re-registration process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network device sends a CUC message to update the MPS indicator, then the terminal device can be updated with new MPS information, but terminal devices that do not support CUC messages cannot parse the priority indicator information element, causing incorrect access attempts
Solution Approach 1:
The patent changes the update mechanism from CUC message-based to registration message-based. By modifying the parameter of how MPS indicators are updated (from configuration update to registration process), the system achieves compatibility with both CUC-supporting and CUC-non-supporting terminal devices, resolving the protocol compatibility issue while maintaining update reliability
Solution Approach 2:
The registration message is designed to serve multiple functions: it both establishes/refreshes the terminal's registration status and simultaneously updates the MPS indicator. This multi-functionality allows the same message to work for all terminal types, achieving universality across different protocol support levels
2Adaptability or versatility
If the terminal device uses outdated MPS indicator information, then the terminal can maintain backward compatibility, but the user experiences connection rejections or inability to obtain high-priority services
Solution Approach 1:
The network device sends the updated MPS indicator back to the terminal device through the registration accept message. This feedback mechanism ensures the terminal receives and stores the current MPS information, preventing the use of outdated indicators while maintaining protocol compatibility through the standardized registration procedure
Data Source
AI summary
Embodiments of this application provide a communication method and a communication apparatus. The communication method includes: A network device obtains user subscription information, where the user subscription information indicates that MPS information of a terminal device changes; and the network device sends a first message to the terminal device, where the first message is for triggering the terminal device to re-register, so that the terminal device updates an MPS indicator in a re-registration process, and the network device supports triggering, by using a CUC message, the terminal device to update the MPS indicator. According to the communication method and the communication apparatus provided in embodiments of this application, when the MPS information of the terminal device changes, even if the terminal device does not support updating the MPS indicator by using the CUC message, the terminal device can be triggered to update the MPS indicator in a re-registration manner.