Session Management Function Data Rate Control in 5G Network Slicing
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Solution Overview
Problem
Existing wireless communication systems lack an effective method to control the data rate for each network slice in a 5G communication system, which is essential for managing network resources efficiently and adapting to varying user equipment requirements.
Innovation Solution
A method and apparatus that utilize a Session Management Function (SMF) device to control the data rate by establishing SM policy associations, determining the Aggregate Maximum Bit Rate (AMBR) for each network slice, and managing N4 sessions to ensure efficient data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If network slicing technology is introduced to support various services, then service versatility is improved, but device complexity increases due to the need for multiple network functions and data rate control mechanisms
Solution Approach 1:
The patent segments network slicing control into distinct functional components: SMF devices handle session management and data rate control, while PCF devices handle policy management. This segmentation allows each component to specialize in specific tasks, reducing overall system complexity while maintaining service versatility.
Solution Approach 2:
The patent introduces policy control function (PCF) devices as intermediaries between SMF devices and the core network. These PCF devices act as mediators that translate high-level service requirements into specific data rate policies, simplifying the control architecture while supporting diverse services.
2Productivity
If data rate control is implemented for each network slice, then network resource management efficiency is improved, but processing time increases due to additional control operations
Solution Approach 1:
The patent implements preliminary action by having PCF devices establish data rate policies in advance during session setup. The SMF device receives pre-configured policies from the PCF, allowing rapid data rate control decisions during actual data transmission without real-time policy computation delays.
Solution Approach 2:
The patent implements feedback mechanisms where the SMF device monitors actual data rates and compares them against policies from the PCF. This feedback loop enables efficient resource management by adjusting control actions based on actual network conditions while maintaining predictable processing times through policy-guided decisions.
Data Source
AI summary
Disclosed are a method and device for controlling the rate of data transmitted/received by a terminal in a wireless communication system. A method according to an embodiment of the present disclosure is a data rate control method of a terminal in an access and mobility management function (AMF) device of a wireless communication system, wherein the method may include the operations of: receiving, from the terminal, a registration request message, including an identifier of the terminal, transmitting the registration request message including the identifier of the terminal to a unified data management (UDM), receiving subscription information, including network slice information which can be allocated to the terminal, from the UDM, querying a policy control function (PCF) device about policy association of the terminal including the network slice information, receiving a policy association response message, including information about restricting the total transmission rate of serving network slices, from the PCF, and providing the information about restricting the total transmission rate of the serving network slices to a base station of the terminal.