UE Registration Signaling for Disaster-Aware Network Access
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Solution Overview
Problem
Existing communication systems struggle to efficiently indicate whether a terminal device is in a disaster scenario, leading to potential service interruptions and inefficient information exchange during network access.
Innovation Solution
Incorporating indication information in registration request messages to explicitly signal whether a disaster scenario exists, allowing the AMF to differentiate between local and disaster-roaming UEs and adjust registration processes accordingly, including dynamic threshold settings based on load status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If indication information is added to registration request messages to explicitly signal disaster scenarios, then information exchange efficiency is improved, but message complexity increases
Solution Approach 1:
The indication information is segmented into separate bit fields within the registration request message. Specifically, the first indication information (1 bit) indicates whether the UE is in a disaster scenario, while the second indication information (1 bit) indicates whether the UE is in a congestion scenario. This segmentation allows the AMF to process different scenario types independently without increasing overall message structure complexity.
Solution Approach 2:
The indication information is designed to be dynamically set by the UE based on current network conditions. The UE evaluates whether it is in a disaster scenario and whether it is in a congestion scenario, then sets the corresponding indication bits accordingly. This dynamic approach allows the message to adapt to changing conditions without requiring a fixed complex structure for all possible scenarios.
2Reliability
If the AMF processes registration requests with indication information to differentiate disaster and congestion scenarios, then service reliability is improved, but processing complexity increases
Solution Approach 1:
The AMF processes the indication information by segmenting it into distinct evaluation steps. First, the AMF extracts and evaluates the first indication information to determine if the UE is in a disaster scenario. Then, it extracts and evaluates the second indication information to determine if the UE is in a congestion scenario. This segmented processing approach allows the AMF to handle different scenario types independently, improving service reliability without overwhelming processing complexity.
Solution Approach 2:
The AMF performs preliminary evaluation of the indication information before proceeding with full registration processing. By first checking the disaster scenario indication and then the congestion scenario indication, the AMF can make early decisions about whether to accept or reject the registration request, avoiding unnecessary processing steps and reducing overall processing complexity while maintaining high service reliability.
3Adaptability or versatility
If dynamic threshold settings are implemented based on load status, then network adaptability is improved, but control complexity increases
Solution Approach 1:
The threshold for accepting registration requests is made dynamic based on the UE's load status indication. When the second indication information shows the UE is in a congestion scenario, the AMF applies a different threshold compared to when the UE is not in congestion. This dynamic threshold adjustment allows the network to adapt to varying load conditions automatically, improving network adaptability while keeping control complexity manageable through clear conditional logic.
Data Source
AI summary
This application discloses a communication method and apparatus. The method includes: A UE sends a registration request message to an AMF, where the registration request message includes indication information, and the indication information indicates whether a disaster scenario exists. The AMF receives the registration request message, and sends a registration response message to the UE based on the indication information and a load status. The UE receives the registration response message.