Extended Access Barring for MTC Network Congestion
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Solution Overview
Problem
Current 3GPP mobile communication systems face network overload issues due to Machine Type Communication (MTC) devices, leading to failed data transmissions and service drops, particularly during high traffic or device handovers, which are costly to mitigate with existing high-capacity gateway updates.
Innovation Solution
Implementing Extended Access Barring (EAB) in MTC devices, where the upper layer recognizes priority changes and determines whether to apply EAB for attach requests, tracking area updates, or service requests, thereby barring RRC connections to manage network congestion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high-capacity gateway updates are implemented to handle network overload, then network capacity and data transmission reliability are improved, but infrastructure cost and system complexity increase
Solution Approach 1:
The patent applies preliminary action by implementing access barring checks before devices attempt to connect to the network. The upper layer determines whether to apply extended access barring for attach requests, tracking area updates, or service requests, preventing network overload before it occurs rather than requiring costly infrastructure upgrades to handle the load
2Stability of the object's composition
If access control measures are implemented to reduce network congestion, then network stability is improved, but service accessibility and device connectivity are worsened
Solution Approach 1:
The patent applies local quality by implementing differentiated access control based on device priority and network conditions. The upper layer determines whether to apply extended access barring on a per-request basis, allowing normal devices to access services while preventing only the specific problematic connections that cause congestion, rather than applying blanket restrictions
3Productivity
If extended access barring is applied to all requests, then network congestion is reduced, but legitimate service requests are blocked
Solution Approach 1:
The patent applies dynamics by making the access barring determination adaptive rather than static. The upper layer dynamically evaluates each attach request, tracking area update request, or service request to determine whether to apply extended access barring, allowing the system to flexibly respond to changing network conditions and device priorities rather than applying fixed restrictions
Data Source
AI summary
Disclosed is a method for applying an extended access barring (EAB), the method performed by a machine type communication (MTC) device and comprising: recognizing, by an upper layer of the MTC device, a change from being operated in an override low priority to being operated in a low priority; informing, by the upper layer, a lower layer that the priority has been changed; and determining, by the lower layer, whether to apply the EAB, to handle at least one of an attach request, a tracking area update request, and a service request. If the EAB is applied, a RRC connection is barred.