Wireless Access Control Parameter Updates for Network Congestion
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Solution Overview
Problem
Current wireless communication networks face challenges in managing sudden congestion, as existing access control mechanisms are slow to adapt and inefficient in preventing new service attempts during network overload, particularly affecting devices in RRC-connected states.
Innovation Solution
Implementing a method where a network node, such as a gNB, transmits indications of changed access control parameters to user devices, allowing them to update or comply with new settings, including unified access control types, network slice information, and prohibition statuses, enabling faster congestion control by using RRC dedicated messages or system broadcast messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If traditional access control mechanisms are used, then network coverage and connectivity are maintained, but the system responds slowly to sudden congestion and cannot efficiently prevent new service attempts
Solution Approach 1:
The network node proactively sends indications of changed access control parameters to wireless devices before congestion fully develops. This preliminary action allows devices to update their access control parameters in advance, enabling faster response to congestion conditions while maintaining reliable access control.
Solution Approach 2:
The system implements a feedback mechanism where the network node monitors network conditions and sends indications to wireless devices when access control parameters need to be changed. This feedback loop enables the system to adapt dynamically to changing network conditions, improving both response speed and access control effectiveness.
2Reliability
If access control parameters are updated frequently, then congestion control becomes more effective, but network signaling overhead and device processing burden increase
Solution Approach 1:
The patent applies different access control parameter update strategies to different wireless devices based on their specific conditions and network slice requirements. Instead of uniformly updating all devices, the system selectively updates parameters for devices that need them, reducing overall signaling overhead while maintaining effective congestion control where necessary.
Solution Approach 2:
The system changes access control parameters dynamically based on network conditions, using indication messages to notify devices of parameter changes only when necessary. This selective parameter update approach maintains congestion control effectiveness while minimizing the frequency of updates and associated signaling overhead.
3Productivity
If the system prohibits new service attempts during congestion, then network load is reduced, but legitimate user access is delayed
Solution Approach 1:
The system dynamically adjusts access control parameters based on real-time network conditions rather than applying static prohibition rules. The network node sends indications to update parameters selectively, allowing the system to manage network load effectively while maintaining access availability for legitimate users whose devices receive appropriate parameter updates.
Solution Approach 2:
The patent segments the network into different network slices with customized access control parameters. By applying different parameter update strategies to different slices and devices, the system can reduce network load in congested areas while maintaining access availability for users in less affected areas or with higher priority services.
Data Source
AI summary
A network node transmits an indication of a change to access control parameters, wherein the indication includes one or more of an operator information, a unified access control type, access identities, network slice information, session information, an indication to prohibit new service access attempt, an indication to alleviate prohibition of new service access attempt and a radio resource control state.