Service-Aware Admission Control for IoT Network Slicing
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Solution Overview
Problem
Existing wireless access networks face congestion issues when a large number of IoT devices connect simultaneously, leading to potential rejection of critical IoT devices due to insufficient resources, and existing admission control methods fail to differentiate between various IoT devices effectively.
Innovation Solution
Implementing service-aware admission control using network slicing, which differentiates between IoT devices and services by assigning specific network slices based on traffic characteristics, prioritizing critical IoT devices, and applying dynamic waiting times and access barring thresholds to manage congestion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If admission control is performed to manage network resources, then network congestion is reduced, but critical IoT devices may be rejected due to insufficient resources
Solution Approach 1:
The patent applies local quality by differentiating admission control treatment based on device type. Critical IoT devices receive preferential treatment with higher admission thresholds and lower barring probabilities, while non-critical devices face stricter control. This localized differentiation ensures critical devices maintain reliable connections while overall network congestion is managed.
Solution Approach 2:
The patent changes admission control parameters dynamically based on device classification. Different access barring thresholds, waiting times, and admission probabilities are applied to different IoT device types. This parameter differentiation resolves the contradiction by ensuring critical devices have sufficient resource allocation while maintaining overall network efficiency.
2Productivity
If traditional admission control is used, then network congestion is managed, but differentiation between various IoT devices is not achieved
Solution Approach 1:
The patent implements local quality by applying different admission control parameters to different IoT device types. Critical devices, emergency devices, and non-critical devices each receive customized treatment based on their service requirements. This enables the system to adapt to diverse IoT application needs while maintaining efficient resource allocation.
Solution Approach 2:
The patent segments IoT devices into different categories (critical, non-critical, emergency, non-emergency) and applies differentiated admission control policies to each segment. This segmentation enables versatile device type differentiation while maintaining overall network productivity through structured resource management.
3Reliability
If network resources are allocated to handle all IoT devices, then all devices can connect, but network congestion increases and performance degrades
Solution Approach 1:
The patent changes admission control parameters based on device priority and network conditions. By adjusting access barring thresholds, waiting times, and admission probabilities dynamically, the system maintains connection availability for critical devices while preventing overall network congestion that would degrade performance.
Solution Approach 2:
The patent applies local quality by allocating network resources differently based on device type and service requirements. Critical devices receive guaranteed resource allocation while non-critical devices share remaining resources. This localized resource allocation maintains both connection reliability and overall network performance.
Data Source
AI summary
A network device may receive a request to connect to a network from a user equipment device and perform a first admission control procedure to determine whether to temporarily allow the user equipment device to connect to the network. The network device may receive information identifying a slice associated with the user equipment device in response to determining to temporarily allow the user equipment device to connect to the network. The network device may perform a second admission control procedure to determine whether to allow the user equipment device to connect to the network. The second admission control procedure is based on the slice associated with the user equipment device. The network device may allocate network resources to the user equipment device in response to determining to allow the user equipment device to connect to the network.