Dynamic QoS Flow Congestion Control in 5G Networks
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Solution Overview
Problem
Current congestion control methods in wireless communication systems rely heavily on static pre-configuration, which limits their effectiveness and flexibility, especially in scenarios where third-party applications or network roaming are involved, leading to inefficiencies in managing quality of service (QoS) flows and congestion control.
Innovation Solution
The implementation of an explicit user plane congestion control method in 5G networks, where the Session Management Function (SMF) determines QoS flows based on congestion control indications from the Policy Control Function (PCF) and sends these indications to access network devices, enabling dynamic congestion control without relying on pre-configured settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If static pre-configuration is used for congestion control, then device complexity is reduced and ease of operation is improved, but adaptability and effectiveness of congestion control deteriorate
Solution Approach 1:
The patent implements dynamic congestion control by allowing the network to send congestion control indications to the terminal device during runtime, enabling the terminal to adjust QoS flow transmission dynamically based on current network conditions rather than relying on static pre-configuration. This resolves the contradiction by making the system adaptable while maintaining operational simplicity through automated dynamic adjustments.
Solution Approach 2:
The patent establishes a feedback mechanism where the network monitors congestion status and sends congestion control indications back to the terminal device, which then adjusts its transmission behavior accordingly. This feedback loop enables the system to adapt to changing network conditions while keeping the terminal device's operation simple through automated responses to network instructions.
2Adaptability or versatility
If dynamic congestion control without pre-configuration is implemented, then adaptability and effectiveness are improved, but device complexity and signaling overhead increase
Solution Approach 1:
The patent enables the terminal device to autonomously adjust its QoS flow transmission based on congestion control indications received from the network. The terminal self-manages the congestion control by automatically modifying transmission parameters according to network conditions, reducing the need for complex pre-configuration while maintaining adaptability. This self-service approach balances adaptability with manageable device complexity.
Data Source
AI summary
Provided are methods and an apparatuses for congestion control. In an apparatus for congestion control, which includes a processor and a processor, the transceiver is configured to receive a policy and charging control (PCC) rule from a policy control function (PCF) network element, where the PCC rule includes a first congestion control indication; and the processor is configured to determine a quality of service (QOS) flow for transmitting a first service data flow based on the first congestion control indication. The transceiver is also configured to send a congestion control indication associated with the QoS flow and a QoS flow identifier of the QoS flow to an access network device.