AMBR Control for 5G Network Slice Resource Management
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Solution Overview
Problem
Current quality of service (QoS) control mechanisms in 5G networks do not effectively manage resource usage within network slices, particularly for terminal devices, leading to inefficiencies in bandwidth and latency management across different service types such as AR, VR, IoT, and others.
Innovation Solution
The proposed method involves a mobility management network element obtaining and sending Single Network Slice Selection Assistance Information (S-NSSAI) and associated Aggregate Maximum Bit Rate (AMBR) values to access network devices, allowing for the determination and control of second slice-AMBR to manage non-guaranteed bit rate QoS flows within specific network slices, thereby controlling the maximum data rate of terminal devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing QoS control mechanism (UE-AMBR and session-AMBR) is used, then terminal device aggregate bit rate control is achieved, but network slice resource usage cannot be controlled
Solution Approach 1:
The patent segments the AMBR control into two independent parameters: UE-AMBR for terminal-level aggregate bit rate control and slice-AMBR for network slice-level resource control. This segmentation allows each parameter to be optimized independently, enabling fine-grained control of resources within specific network slices without affecting the overall terminal bandwidth control mechanism.
Solution Approach 2:
The patent introduces a new dimension of control by adding slice-AMBR as an additional parameter alongside the existing UE-AMBR. This dimensional expansion enables the system to control bandwidth not only at the terminal level but also at the network slice level, providing multi-level hierarchical control for better resource management.
2Reliability
If network slices are isolated to meet differentiation requirements, then service-specific QoS is achieved, but resource management efficiency decreases
Solution Approach 1:
The patent applies local quality control by enabling slice-AMBR to be configured differently for each network slice based on its specific service requirements. Each network slice can have its own optimized AMBR parameters tailored to its workload characteristics, allowing efficient resource allocation that respects both isolation requirements and management efficiency.
3Speed
If AR/VR services require large bandwidth and low latency, then service quality is improved, but network resource consumption increases
Solution Approach 1:
The patent enables dynamic resource allocation by allowing the network to adjust slice-AMBR parameters in real-time based on actual service demands. For AR/VR services requiring high bandwidth and low latency, the system can dynamically allocate additional resources within the slice without affecting other slices, while optimizing resource consumption through flexible policy control.
Data Source
AI summary
Disclosed is an AMBR control method, device, and system, so that a quality of service (QoS) control mechanism can be used to control use of resources in a network slice by a terminal device. The method includes: a mobility management network element obtaining M pieces of single network slice selection assistance information (S-NSSAI) corresponding to a terminal device and a first slice-AMBR corresponding to each piece of S-NSSAI in the M pieces of S-NSSAI; and sending the M pieces of S-NSSAI and the first slice-AMBR corresponding to each piece of S-NSSAI to an access network device, where the first slice-AMBR corresponding to each piece of S-NSSAI is used to determine a second slice-AMBR corresponding to the S-NSSAI, and the second slice-AMBR corresponding to each piece of S-NSSAI is used to control an aggregate bit rate of non-guaranteed bit rate non-GBR QoS flows in a network slice indicated by the S-NSSAI.