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A dynamic control method and device for qos flow in 5g system session management

A session management and dynamic control technology, applied in the direction of network traffic/resource management, wireless communication, electrical components, etc., can solve the problem of not being able to adapt to the dynamic changes of the network environment and services, not guaranteeing the allocation of QFI, and exacerbating network overload and congestion. To reduce the storage of training data, improve QoS adaptability, and avoid congestion/overload

Active Publication Date: 2021-10-29
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods are simple and easy to operate, they cannot adapt well to the dynamic changes of the network environment and business
When the network environment changes significantly, statically configured parameters such as QFI cannot guarantee reasonable routing and forwarding, so it may aggravate network overload and congestion; when service characteristics and QoS requirements change, or new services need to be transmitted , this static configuration method cannot guarantee the allocation of suitable parameters such as QFI

Method used

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  • A dynamic control method and device for qos flow in 5g system session management
  • A dynamic control method and device for qos flow in 5g system session management
  • A dynamic control method and device for qos flow in 5g system session management

Examples

Experimental program
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Embodiment 1

[0105] This embodiment provides a method for dynamically controlling QoS flows during the establishment of a PDU session initiated by the UE for uplink service transmission. For example, the sensor of a wearable device uploads blood pressure / heart rate monitoring data. The specific signaling interaction steps are as follows: Figure 4 shown, including:

[0106] Step 1: UE initiates a service transmission request, sends the request to RAN and AMF in turn, and uploads parameters such as the QoS requirements of the service at the same time;

[0107] Step 2: If the integrity protection is not included in the service transmission request or the integrity protection verification fails, the AMF performs the corresponding NAS identity / security verification. After the verification is passed, the AMF sends a service transmission request to the SMF and transmits parameters such as QoS;

[0108] Step 3: SMF judges the type of service to be transmitted according to the QoS requirements and...

Embodiment 2

[0120] This embodiment provides a dynamic control method for implementing QoS flows during the establishment of a PDU session that initiates downlink service transmission on the network side. For example, the smart grid system reconfigures the electric meter. The specific signaling interaction steps are as follows: Figure 5 shown, including:

[0121] Step 1: UPF receives and caches downlink transmission data from DN, and sends a data notification to SMF, and then SMF forwards the notification to AMF, and the notification includes information parameters such as characteristics of the service data to be transmitted and QoS requirements;

[0122] Step 2: The AMF initiates paging to the UE to prevent the UE from being in idle mode. After receiving the paging indication, the UE decides whether to perform data transmission according to its own state. If the UE can receive downlink transmission data, perform the third step;

[0123] Step 3: The UE initiates a service transmission re...

Embodiment 3

[0134] This embodiment provides a method for dynamically controlling QoS flows during the PDU session modification process initiated by UE / RAN / SMF. The specific signaling interaction steps are as follows: Figure 6 shown, including:

[0135]Step 1: The PDU session modification process is initiated. There are three trigger situations for the PDU session modification process, including: when the QoS requirements of the service change, the UE sends a NAS message to initiate a PDU session modification request. The NAS message is passed The RAN forwards to the AMF, and then the AMF initiates a PDU session modification request to the SMF; when a radio access network resource mapped to a QoS flow is released, the RAN sends an N2 message to the AMF to notify the release of the QoS flow, and then the AMF sends a request to the AMF SMF initiates a PDU session modification request; when SMF receives a notification from PCF about policy modification, or receives a notification from UDM ab...

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Abstract

The present invention discloses a dynamic control method and device for QoS flow in 5G system session management. The method is implemented by adding the following four functional modules in the session management function SMF: a judging module for judging the status of network resources Category and change, service category to be transmitted and feature requirements similarity between different categories of services; self-learning and calculation module, used to adaptively optimize QFI parameter configuration strategy according to the reinforcement learning method, and provide QFI calculation results; interactive communication module , for information interaction with external network function modules, to implement QoS parameter configuration, etc.; decision-making module, for processing information received by the interactive communication module, to determine required QoS parameters, etc. The method and device provided by the present invention can realize dynamic control of QoS flow granularity, optimize routing and forwarding when the network environment changes, alleviate or avoid congestion / overload, and ensure efficient data transmission. At the same time, network topology information and excessive Control signaling overhead.

Description

technical field [0001] The invention relates to a dynamic control method and device for QoS flow in 5G system session management, belonging to the field of mobile communication system technology research. Background technique [0002] In a mobile communication system, providing QoS (Quality of Service, Quality of Service) guarantee can realize effective allocation of network bandwidth and rational utilization of network resources. When the network is overloaded or congested, QoS management can avoid the transmission delay and data packet discarding of important services, thereby ensuring the overall performance and operating efficiency of the network. Compared with the LTE (Long Term Evolution, long-term evolution) network, the 5G network will not only adopt a variety of new key technologies such as network slicing, but its QoS management method has also undergone great changes. In an LTE network, all services are established with a bearer as a unit, and different services ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/02H04W28/06H04W28/24
CPCH04W28/0289H04W28/06H04W28/24
Inventor 赵新胜王琳
Owner SOUTHEAST UNIV
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