MBS-Specific Access Control for 5G Network Congestion
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Solution Overview
Problem
In wireless communication systems, especially in 5G networks, the lack of an effective access control mechanism for multicast/broadcast services (MBS) leads to network congestion when multiple user equipment (UEs) initiate connection setups simultaneously, as existing mechanisms fail to manage concurrent requests efficiently.
Innovation Solution
The implementation of a method and apparatus for user equipment (UE) and base stations that utilize MBS-specific configuration information, such as MBS-specific access class barring (ACB) parameters and dedicated random access channel (RACH) configurations, to dynamically manage access control processes, including unified access control (UAC), RACH backoff, and initial access procedures, thereby mitigating network congestion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing access control mechanisms are used for MBS sessions, then general network access is maintained, but network congestion occurs when multiple UEs initiate connection setups simultaneously
Solution Approach 1:
The patent segments the access control mechanism by introducing MBS-specific configuration information that separates MBS access control from general network access control. This segmentation allows the system to handle MBS sessions with dedicated parameters (such as MBS-specific ACB parameters) while maintaining general access control for other services, thereby preventing network congestion during MBS session activations without affecting overall network productivity
Solution Approach 2:
The patent applies preliminary action by configuring MBS-specific access control parameters in advance before congestion occurs. The network configures and transmits MBS-specific configuration information (including access class barring parameters, RACH configurations, and priority settings) to UEs beforehand, enabling UEs to perform access control checks and prioritize their connection requests before initiating actual data transmission, thus preventing network congestion proactively
2Reliability
If MBS-specific configuration information is implemented, then access control for MBS sessions is improved, but system complexity increases
Solution Approach 1:
The patent implements universality by designing MBS-specific configuration information that can be integrated into existing access control frameworks. The MBS-specific parameters (such as uac-BarringForMBS, ra-PrioritizationForMBS) extend rather than replace existing mechanisms, allowing the same access control architecture to handle both general network access and MBS-specific access control through a unified configuration approach, thereby minimizing additional system complexity
Solution Approach 2:
The patent introduces MBS-specific configuration information as an intermediary layer between the network and UEs. This intermediary configuration (transmitted via system information blocks or dedicated signaling) carries MBS-specific parameters that mediate between the network's access control policies and UE behavior, enabling improved MBS access control without requiring fundamental changes to the existing system architecture
Data Source
AI summary
Provided is a method for a user equipment (UE), comprising: acquiring a notification for participating in an access control process for an multicast/broadcast service (MBS) session; and participating in an access control process for the MBS session by using MBS specific configuration information.