Wireless Communication Registration Updates Without Back-Off Timer Delays
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Solution Overview
Problem
Terminal devices are unable to initiate mobile registration update procedures due to the presence of a running mobility management back-off timer, preventing timely restoration of services.
Innovation Solution
Instruct the terminal device to release a non-access stratum NAS signaling connection and initiate a mobile registration update procedure, and if a mobility management back-off timer is running, stop the timer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the AMF adds a mobility management back-off timer to reject NAS request messages when overloaded, then the network overload is controlled, but the terminal device cannot initiate mobile registration update procedures before the timer expires, causing service restoration delays
Solution Approach 1:
The network device sends a configuration update command message to the terminal device before the back-off timer expires, proactively instructing the terminal to release the NAS signaling connection and initiate a mobile registration update procedure. This preliminary action allows the terminal to reset its registration state and restore services without waiting for the back-off timer to expire, thereby resolving the contradiction between maintaining network overload control and enabling timely service restoration
Solution Approach 2:
The configuration update command message acts as an intermediary mechanism between the network device and terminal device. It carries instructions that enable the terminal to bypass the back-off timer restriction by initiating a forced mobile registration update. This intermediary message allows the terminal to restore services timely while the network maintains overall overload control through coordinated management
2Reliability
If the terminal device waits for the mobility management back-off timer to expire before initiating mobile registration update, then network overload is prevented, but the terminal cannot perform subsequent services in time
Solution Approach 1:
The network device takes preliminary action by sending the configuration update command message to the terminal device before the back-off timer expires. This message instructs the terminal to release the NAS signaling connection and initiate a mobile registration update procedure, enabling the terminal to restore services without waiting for the timer to expire. This resolves the contradiction by maintaining network stability through coordinated control while achieving rapid service restoration
Solution Approach 2:
The system dynamically adjusts the terminal's registration behavior based on network conditions. When the network device determines it can accept registrations, it sends the configuration update command to dynamically change the terminal state from blocked to active. This dynamic adjustment allows the terminal to transition from passive waiting to active registration, improving service restoration speed while maintaining overall network stability
Data Source
AI summary
Embodiments of the present invention disclose a wireless communication method and a device. The method includes: receiving a configuration update command message, where the configuration update command message is used to instruct a terminal device to release a non-access stratum NAS signaling connection with a network device and initiate a mobile registration update procedure; and if a mobility management back-off timer is running at a reception occasion of the configuration update command message, stopping the mobility management back-off timer.