UE Access Barring with Randomized Standby Time
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Solution Overview
Problem
In mobile communication systems, network congestion occurs when multiple User Equipments (UEs) simultaneously attempt to access a base station, leading to reduced network performance, especially during emergency situations or high-demand events, where access is barred, making it difficult for users to determine when network access will be restored.
Innovation Solution
A method and apparatus for a UE that includes a processor and memory to receive a barring message, determine if access is barred, acquire a standby time period based on random variables, and store this information, allowing users to be informed about the end of network congestion and when voice or video calls can be re-originated.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple UEs simultaneously attempt to access a network through a base station, then network capacity and service availability are improved, but network congestion occurs leading to reduced network performance
Solution Approach 1:
The network performs preliminary congestion detection and sends access barring messages to UEs before the network becomes completely overloaded. This preliminary action prevents excessive UEs from attempting access simultaneously, thereby maintaining network performance while still allowing reasonable network capacity utilization.
Solution Approach 2:
The access barring configuration is dynamically adjusted based on real-time network congestion status. The network can modify barring factors, barring times, and other parameters adaptively, allowing the system to optimize between network capacity and performance depending on current load conditions.
2Reliability
If the network bars access during congestion status, then network performance is protected, but users cannot determine when network access will be restored
Solution Approach 1:
The network provides feedback to UEs about the congestion status and expected access restoration time through access barring messages. These messages include information such as barring factor, barring time, and other parameters that inform users when network access will be available, eliminating the information loss about access restoration.
3Loss of information
If the network provides detailed congestion information to UEs, then user awareness of access status is improved, but signaling overhead and network load increase
Solution Approach 1:
The patent extracts only the essential congestion information (barring factor, barring time, access restoration indication) from the full network status and includes only these critical parameters in the access barring messages sent to UEs. This selective extraction provides users with necessary access status information while minimizing signaling overhead and avoiding transmission of unnecessary data.
Data Source
AI summary
Disclosed are a method and/or an apparatus which allow a User Equipment (UE) to attempt to access a network in a mobile communication system. The UE for attempting to gain access to a network may include: a memory; a communication circuit; and a processor that is electrically connected to the memory and the communication circuit, wherein the processor may receive a first barring message from the network; may determine whether access to the network is barred, on the basis of a first random variable and the first barring message; when it is determined that the access to the network is barred, may acquire a first standby time period related to the barring of the access to the network on the basis of a second random variable and the first barring message; and may store the first standby time period in the memory.