Radio Access Control for MME Load Management
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Solution Overview
Problem
The heavy load on a Mobility Management Entity (MME) leads to low resource utilization as it instructs base stations to reject all services, failing to differentiate between various data transmission attributes, resulting in inefficient resource allocation.
Innovation Solution
A radio access control method where the MME instructs base stations to bar or allow specific services based on their data transmission attributes, allowing terminal devices to selectively send RRC connection requests, thereby optimizing resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the MME instructs the base station to reject access of all services when load is heavy, then the MME load is reduced, but the network resource utilization deteriorates
Solution Approach 1:
The patent segments the service types into different categories (emergency services, high-priority services, normal services, etc.) and applies different access control policies to each category. Instead of uniformly rejecting all services when MME load is heavy, the system selectively bars only non-critical services while allowing critical services to proceed, thus maintaining network resource utilization for important traffic while protecting the MME from overload.
Solution Approach 2:
The patent applies different quality levels of access control to different service types. Critical services (emergency, high-priority) receive high-quality treatment with access allowed even under heavy load, while non-critical services receive lower-quality treatment with access barred. This local differentiation of service quality resolves the contradiction by preserving MME reliability while maintaining productivity for essential services.
2Reliability
If the MME bars access of all services of a type, then the MME load is reduced, but the service capability deteriorates
Solution Approach 1:
The patent divides services into multiple segments or categories with different priorities and characteristics. Instead of applying a single blanket restriction to all services of a type, the system segments them further and applies selective access control. This allows the MME to maintain load control while preserving service capability for specific segments that are still needed.
Solution Approach 2:
The patent changes the parameters of access control from a binary (barred/allowed) state to a multi-level state based on service characteristics, priority, and MME load conditions. By dynamically adjusting access control parameters according to service type and network conditions, the system maintains both MME reliability and service capability adaptability.
3Device complexity
If the MME does not differentiate between data transmission attributes, then the control logic is simple, but the resource allocation efficiency deteriorates
Solution Approach 1:
The patent segments the control logic into modular components that handle different data transmission attributes independently. Each service type is associated with specific transmission attributes (UP scheme, CP scheme, RAT type), and the access control logic is segmented to evaluate and make decisions based on these attributes. This modular segmentation maintains relative simplicity while enabling efficient resource allocation.
Solution Approach 2:
The patent introduces additional parameters for differentiation (service type, transmission scheme type, RAT type) into the access control logic. By changing the parameter set from a single generic service indicator to multiple specific attributes, the system achieves better resource allocation efficiency while keeping the control logic structured and manageable through standardized parameter evaluation.
Data Source
AI summary
A radio access control method is provided. The method includes a terminal device receiving access control information sent by an access network device, the access control information indicating a barred service type and a barred data transmission attribute to the terminal device. The terminal device determines whether to send a radio resource control connection request to the access network device based on the barred service type and the barred data transmission attribute. The data transmission attribute comprises a transmission scheme type, and the transmission scheme type is used to indicate a transmission scheme used by the terminal device for transmitting service data used by the terminal device, thereby improving network resource utilization.