A method and system for dynamic adjustment of QOS flow of 5G communication

Abstract

The application discloses a kind of QOS flow dynamic adjustment method and system of 5G communication;The application receives the session establishment request initiated by terminal UE by SMF network element, establishes special QOS flow for terminal UE;SMF network element issues the PDR of special QOS flow to UPF network element;UPF network element receives and carries out service detection to terminal UE according to PDR, if the service detected meets PDR, then service event is reported to SMF network element;SMF network element carries out state switching according to the service event reported by UPF network element to the GBR or Non-GBR of special QOS flow;The application monitors the service information of terminal UE by UPF network element in real time, informs SMF network element of the service use change condition of terminal UE, and dynamically adjusts QOS flow attribute according to the received notification information, adjusts QOS flow to GBR or Non-GBR, so as to meet the use of exclusive bandwidth of customer while realizing the full and effective use of 5G network bandwidth resource, avoid the waste of bandwidth resource.

Description

[0001] This case is a divisional application of the invention patent with the application date of 2021-07-21, the application number of 202110822629.4, and the name of "a QOS flow dynamic adjustment method and system". TECHNICAL FIELD

[0002] The present application relates to the field of communication technology, in particular to a QOS flow dynamic adjustment method and system for 5G communication. BACKGROUND

[0003] In the fifth generation mobile communication (5G) system, the system realizes QOS guarantee based on QOS flow (quality of service based on service quality), and the QOS flow is the minimum granularity of QOS forwarding processing in the 5G system. The 5G system supports QOS flows with guaranteed bit rate (GBR) and QOS flows without guaranteed bit rate (Non-GBR), and different QOS flows are allocated according to the needs of the service. The use of QOS flow is mainly controlled by the network element SMF (Session Management Function) of the 5G core network.

[0004] In the prior art, the 5G core network usually pre-allocates QOS flows for the terminal UE (User Equipment), and establishes and issues the QOS flows to the terminal UE at one time when the terminal UE establishes a PDU session. In this technology, the GBR QOS flow can provide dedicated bandwidth guarantee for the terminal UE customer, and improve the customer's satisfaction with the use of 5G network. However, the GBR QOS flow allocated to the terminal UE will occupy bandwidth resources even if it is not used, and in the case of a large number of GBR QOS flows and the terminal UE not being used all the time, a large amount of network bandwidth resources will be wasted. SUMMARY

[0005] The technical problem to be solved by the present application is to provide a QOS flow dynamic adjustment method and system, which realizes the full and effective use of 5G network bandwidth resources and avoids the waste of bandwidth resources.

[0006] In order to solve the above technical problems, the technical scheme adopted by the present application is:

[0007] A QOS flow dynamic adjustment method for 5G communication, comprising:

[0008] S1, the SMF network element of the 5G core network receives the session establishment request initiated by the terminal UE, and establishes a dedicated QOS flow for the terminal UE;

[0009] The step S1 is specifically:

[0010] S11, the SMF network element receives a session establishment request initiated by a terminal UE, acquires subscription information of the terminal UE from a UDM network element according to the session establishment request, and judges whether the subscription information identifies that a service of the terminal UE needs GBR wideband guarantee;

[0011] S12, if the subscription information identifies that the service of the terminal UE needs GBR wideband guarantee, the SMF network element establishes a default QOS flow of Non-GBR and a special QOS flow with an initial state of Non-GBR for the terminal UE;

[0012] S2, the UPF network element monitors the service information of the terminal UE in real time, and notifies the SMF network element of the service usage change of the terminal UE, and the SMF network element dynamically adjusts the attribute of the special QOS flow to GBR or Non-GBR according to the received notification information.

[0013] A dynamic adjustment method of a QOS flow, comprising:

[0014] S1, the SMF network element receives a session establishment request initiated by a terminal UE, and establishes a special QOS flow for the terminal UE;

[0015] S2, the SMF network element issues a PDR of the special QOS flow to a UPF network element;

[0016] S3, the UPF network element receives and detects the service of the terminal UE according to the PDR, and if the detected service conforms to the PDR, reports a service event to the SMF network element;

[0017] S4, the SMF network element switches the state of GBR or Non-GBR of the special QOS flow according to the service event reported by the UPF network element.

[0018] In order to solve the above technical problems, another technical solution adopted by the present application is:

[0019] A QOS flow dynamic adjustment system of 5G communication, comprising a communication-connected SMF network element and a UPF network element, the SMF network element is used for receiving a session establishment request initiated by a terminal UE, and establishing a special QOS flow for the terminal UE; dynamically adjusting the attribute of the special QOS flow to GBR or Non-GBR according to the received notification information;

[0020] The SMF network element is specifically used for receiving a session establishment request initiated by a terminal UE, obtaining subscription information of the terminal UE from a UDM network element according to the session establishment request, and judging whether the subscription information identifies that a service of the terminal UE needs GBR wideband guarantee; if the subscription information identifies that the service of the terminal UE needs GBR wideband guarantee, the SMF network element establishes a default QOS flow of Non-GBR and a special QOS flow of Non-GBR in an initial state for the terminal UE.

[0021] The UPF network element is used for monitoring service information of the terminal UE in real time, and notifying the SMF network element of a service use change of the terminal UE.

[0022] A dynamic adjustment system of a QOS flow, which comprises a SMF network element and a UPF network element connected in communication.

[0023] The SMF network element is used for receiving a session establishment request initiated by a terminal UE, establishing a special QOS flow for the terminal UE, issuing a PDR of the special QOS flow to a UPF network element, and switching a state of GBR or Non-GBR of the special QOS flow according to a service event reported by the UPF network element.

[0024] The UPF network element is used for receiving and detecting a service of the terminal UE according to the PDR, and reporting a service event to the SMF network element if the detected service conforms to the PDR.

[0025] The present application has the beneficial effects that the UPF network element monitors service information of the terminal UE in real time, and notifies the SMF network element of a service use change of the terminal UE, the SMF network element dynamically adjusts a QOS flow attribute according to the received notification information, and adjusts the QOS flow to be GBR or Non-GBR, so that the exclusive bandwidth of the customer is met, and the 5G network bandwidth resource is fully and effectively utilized, and the waste of bandwidth resource is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 A flow chart of a dynamic adjustment method of a QOS flow for an embodiment of the present application;

[0027] Figure 2 A structure diagram of a dynamic adjustment system of a QOS flow for an embodiment of the present application;

[0028] Figure 3 A sequence diagram of a special QOS flow establishment flow of a dynamic adjustment method of a QOS flow for an embodiment of the present application;

[0029] Figure 4A dedicated QOS flow dynamic adjustment flow procedure chart of a QOS flow dynamic adjustment method of an embodiment of the present application;

[0030] Label description:

[0031] 1. A QOS flow dynamic adjustment system; 2. SMF; 3. UPF. DETAILED DESCRIPTION

[0032] In order to explain the technical content, the purpose and the effect of the present application in detail, the following will be described in combination with the embodiments and the accompanying drawings.

[0033] Please refer to Figure 1 , Figure 3 and Figure 4 , a QOS flow dynamic adjustment method, comprising:

[0034] S1, the SMF network element receives the session establishment request initiated by the terminal UE, and establishes a dedicated QOS flow for the terminal UE;

[0035] S2, the SMF network element issues the PDR of the dedicated QOS flow to the UPF network element;

[0036] S3, the UPF network element receives and detects the service of the terminal UE according to the PDR, and if the detected service conforms to the PDR, the service event is reported to the SMF network element;

[0037] S4, the SMF network element switches the state of GBR or Non-GBR of the dedicated QOS flow according to the service event reported by the UPF network element.

[0038] From the above description, the beneficial effects of the present application are that the UPF network element monitors the service information of the terminal UE in real time, and informs the SMF network element of the service use change of the terminal UE. The SMF network element dynamically adjusts the QOS flow attribute according to the received notification information, and adjusts the QOS flow to GBR or Non-GBR, so as to meet the customer's use of exclusive bandwidth, and realize the full and effective use of 5G network bandwidth resources, and avoid the waste of bandwidth resources.

[0039] Further, the step S1 is specifically:

[0040] S11, the SMF network element receives the session establishment request initiated by the terminal UE, obtains the subscription information of the terminal UE from the UDM network element according to the session establishment request, and judges whether the subscription information identifies that the service of the terminal UE needs GBR broadband guarantee;

[0041] S12, if the subscription information identifies that the service of the terminal UE needs GBR bandwidth guarantee, the SMF network element establishes a default QOS flow of Non-GBR and a special QOS flow of Non-GBR initial state for the terminal UE.

[0042] From the above description, it can be known that whether the terminal needs GBR bandwidth guarantee is judged according to the subscription information, and for the terminal UE needing GBR bandwidth guarantee, a special QOS flow of Non-GBR initial state is additionally created in addition to the establishment of a default QOS flow of Non-GBR.

[0043] Further, the step S2 is specifically:

[0044] The SMF network element sends the information of the special QOS flow and the corresponding PDR to the UPF network element, and enables the use situation reporting function of the special QOS flow for the UPF network element;

[0045] The step S3 is specifically:

[0046] The UPF network element receives the information of the special QOS flow and the PDR, determines the special QOS flow corresponding to the terminal UE according to the information of the special QOS flow, and detects the service of the terminal UE according to the PDR, and when the start or end of the service meeting the PDR is detected, the corresponding service event is reported to the SMF network element.

[0047] From the above description, it can be known that the SMF network element sends the information of the special QOS flow and the corresponding data detection rule PDR (Packet Detection Rule) to the UPF network element, so that the UPF can detect the service of the terminal UE, and the use situation reporting function is enabled, so that the SMF can obtain the use information of the special QOS flow in time.

[0048] Further, the step S4 is specifically:

[0049] S41, the SMF network element receives the service event reported by the UPF, and judges whether the service event is the start or end of the service;

[0050] S42, if the service event is the start of the service, the SMF network element obtains the QOS parameter information corresponding to the service from the PCF network element, and modifies the special QOS to GBR state according to the QOS parameter information;

[0051] S42, if the service event is the end of the service, the SMF network element modifies the special QOS flow to Non-GBR state.

[0052] From the above description, after the SMF network element receives the service event reported by the UPF, if the service event starts, the dedicated QOS flow is modified to the GBR state to guarantee the service with a wide band, and after the service end event is received, the state is switched back to the Non-GBR state to release the bandwidth resource.

[0053] Please refer to Figure 2 A dynamic adjustment system of a QOS flow, comprising a SMF network element and a UPF network element connected in communication;

[0054] The SMF network element is configured to receive a session establishment request initiated by a terminal UE, establish a dedicated QOS flow for the terminal UE, issue a PDR of the dedicated QOS flow to a UPF network element, and switch the GBR or Non-GBR state of the dedicated QOS flow according to the service event reported by the UPF network element.

[0055] The UPF network element is configured to receive and detect the service of the terminal UE according to the PDR, and if the detected service conforms to the PDR, report the service event to the SMF network element.

[0056] From the above description, the beneficial effects of the present application are that the UPF network element monitors the service information of the terminal UE in real time, and informs the SMF network element of the service usage change of the terminal UE, and the SMF network element dynamically adjusts the QOS flow attribute according to the received information, adjusts the QOS flow to GBR or Non-GBR, thereby meeting the customer's use of exclusive bandwidth while achieving full and effective use of 5G network bandwidth resources, and avoiding waste of bandwidth resources.

[0057] Further, the SMF network element is specifically configured to receive a session establishment request initiated by a terminal UE, obtain the subscription information of the terminal UE from a UDM network element according to the session establishment request, and determine whether the subscription information indicates that the service of the terminal UE needs GBR wideband guarantee; if the subscription information indicates that the service of the terminal UE needs GBR wideband guarantee, a default QOS flow of Non-GBR and a dedicated QOS flow with an initial state of Non-GBR are established for the terminal UE.

[0058] From the above description, it is determined according to the subscription information whether the terminal needs GBR wideband guarantee, and for the terminal UE that needs GBR wideband guarantee, a dedicated QOS flow with an initial state of Non-GBR is additionally created in addition to the default QOS flow of Non-GBR.

[0059] Further, the SMF network element is specifically configured to issue the information of the dedicated QOS flow and the corresponding PDR to the UPF network element, and enable the UPF network element to report the usage of the dedicated QOS flow.

[0060] The UPF network element is specifically configured to receive the information of the special QOS flow and the PDR, determine the special QOS flow corresponding to the terminal UE according to the information of the special QOS flow, and perform service detection on the terminal UE according to the PDR, and when detecting that the service starts or ends in accordance with the PDR, report the corresponding service event to the SMF network element.

[0061] As can be known from the above description, the SMF network element sends the information of the special QOS flow and the corresponding data detection rule PDR to the UPF network element, so that the UPF can detect the service of the terminal UE and start the usage reporting function, and the SMF can obtain the usage information of the special QOS flow in time.

[0062] Further, the SMF network element is specifically configured to receive the service event reported by the UPF, judge whether the service event is the start of the service or the end of the service, if the service event is the start of the service, the SMF network element obtains the QOS parameter information corresponding to the service from the PCF network element, and modifies the special QOS to the GBR state according to the QOS parameter information, and if the service event is the end of the service, the SMF network element modifies the special QOS flow to the Non-GBR state.

[0063] As can be known from the above description, after the SMF network element receives the service event reported by the UPF, if the service event starts, the special QOS flow is modified to the GBR state to guarantee the bandwidth of the service, and after the end event is received, the special QOS flow is switched back to the Non-GBR state to release the bandwidth resource.

[0064] Please refer to Figure 1 , Figure 3 and Figure 4 , the embodiment one of the present application is:

[0065] A dynamic adjustment method of a QOS flow, comprising:

[0066] S1, the SMF network element receives a session establishment request initiated by a terminal UE, and establishes a special QOS flow for the terminal UE;

[0067] The step S1 is specifically:

[0068] S11, the SMF network element receives a session establishment request initiated by a terminal UE, obtains the subscription information of the terminal UE from the UDM network element according to the session establishment request, and judges whether the subscription information identifies that the service of the terminal UE needs GBR bandwidth guarantee;

[0069] S12, if the subscription information identifies that the service of the terminal UE needs GBR bandwidth guarantee, the SMF network element establishes a default QOS flow of Non-GBR and a special QOS flow of Non-GBR in the initial state for the terminal UE.

[0070] In the embodiment, the SMF network element receives the PDU session establishment request of the terminal UE, and obtains the subscription information of the terminal UE from the UDM network element. If the terminal subscription information identifies that part of the service of the terminal UE needs bandwidth guarantee, the SMF network element needs to establish two QOS flows for the terminal UE, one is a default QOS flow, and the other is a special QOS flow. The default QOS flow is a Non-GBR QOS flow defined in the 3GPP standard, which allows all services to pass. The initial configuration of the special QOS flow is a Non-GBR QOS flow, which only allows specific services to pass.

[0071] S2, the SMF network element sends the PDR of the special QOS flow to the UPF network element;

[0072] The step S2 is specifically:

[0073] The SMF network element sends the information of the special QOS flow and the corresponding PDR to the UPF network element, and enables the use of the special QOS flow for the UPF network element to report the use.

[0074] In the embodiment, in the 5G core network side, the SMF network element sends the QOS flow information to the UPF network element. For the special QOS flow, the SMF network element sends the PDR (Packet Detection Rule) of the special QOS flow to the UPF network element, and enables the URR (Usage Reporting Rule) function for the special QOS flow. The reporting trigger condition is the start and end of the service.

[0075] S3, the UPF network element receives and detects the service of the terminal UE according to the PDR, and if the detected service conforms to the PDR, the UPF network element reports the service event to the SMF network element;

[0076] The step S3 is specifically:

[0077] The UPF network element receives the information of the special QOS flow and the PDR, determines the special QOS flow corresponding to the terminal UE according to the information of the special QOS flow, and detects the service of the terminal UE according to the PDR. When the start or end of the service conforming to the PDR is detected, the UPF network element reports the corresponding service event to the SMF network element.

[0078] In this embodiment, the UPF network element detects the service of the terminal UE according to the PDR corresponding to the special QOS flow issued by the SMF network element, and when it is detected that the terminal UE starts to use the service conforming to the PDR through the special QOS flow, the UPF network element reports the service start event to the SMF network element through the URR function.

[0079] S4, the SMF network element switches the state of the GBR or Non-GBR of the special QOS flow according to the service event reported by the UPF network element.

[0080] The step S4 is specifically:

[0081] S41, the SMF network element receives the service event reported by the UPF and judges whether the service event is service start or service end;

[0082] S42, if the service event is service start, the SMF network element acquires the QOS parameter information corresponding to the service from the PCF network element, and modifies the special QOS to GBR state according to the QOS parameter information;

[0083] S42, if the service event is service end, the SMF network element modifies the special QOS flow to Non-GBR state.

[0084] In this embodiment, after the SMF network element receives the service start event reported by the UPF network element through the URR function, the SMF network element acquires the QOS parameter information configured for the service from the PCF network element, and modifies the special QOS flow to GBR QOS flow using the configured QOS parameter information, so as to provide bandwidth guarantee for important services. When the UPF network element detects the service end of the terminal UE, the UPF network element reports the service end event to the SMF network element through the URR function. After the SMF network element receives the service end event reported by the UPF network element through the URR function, the SMF network element modifies the special QOS flow to Non-GBR QOS flow, so as to release the bandwidth resource.

[0085] Please refer to Figure 2 , the second embodiment of the present application is:

[0086] A dynamic adjustment system of QOS flow, which comprises a SMF network element and a UPF network element connected in communication, the SMF network element executes the steps S1, S2 and S4 of the dynamic adjustment method of QOS flow of the first embodiment, and the UPF network element is used for executing the step S3 of the dynamic adjustment method of QOS flow of the first embodiment.

[0087] In summary, the application provides a kind of QOS flow dynamic adjustment method and system, by UPF network element real-time monitoring terminal UE service information, the service use change of terminal UE is announced to SMF network element, and SMF network element dynamically adjusts QOS flow attribute according to the received announcement information, at the beginning of service, dedicated QOS flow is modified to GBR state, to guarantee the broadband of service, and switch back to Non-GBR state after service, to release bandwidth resource, so that in meeting customer use exclusive bandwidth, while, realize the full and effective use of 5G network bandwidth resource, avoid the waste of bandwidth resource.

[0088] The above is only an embodiment of the present application, and does not limit the patent scope of the present application, any equivalent transformation using the content of the present application specification and drawings, or direct or indirect application in related technical fields, are also included in the patent protection scope of the present application.

Claims

1.A method for dynamic adjustment of QOS flow of 5G communication, characterized in that, Comprise: S1, the SMF network element of 5G core network receives the session establishment request initiated by terminal UE, and establishes the special QOS flow for the terminal UE; The step S1 is specifically: S11, the SMF network element receives the session establishment request initiated by terminal UE, obtains the subscription information of the terminal UE according to the session establishment request to UDM network element, and judges whether the subscription information identifies the service of the terminal UE needs GBR broadband guarantee or not; S12, if the subscription information identifies the service of the terminal UE needs GBR broadband guarantee, the SMF network element establishes a Non-GBR default QOS flow and a special QOS flow with initial state of Non-GBR for the terminal UE; S2, the UPF network element monitors the service information of terminal UE in real time, and notifies the SMF network element of the service use change of terminal UE, and the SMF network element dynamically adjusts the attribute of special QOS flow to GBR or Non-GBR according to the received notification information; Step S2 includes the following steps: S21, the SMF network element issues the PDR of the special QOS flow to the UPF network element; S22, the UPF network element receives and detects the service of the terminal UE according to the PDR, and reports the service event to the SMF network element if the detected service conforms to the PDR; S23, the SMF network element judges the service event to be service start or service end according to the service event reported by the UPF network element, and switches the state of GBR or Non-GBR of special QOS flow in combination with the QOS parameter information of service; The step S23 is specifically: S231, the SMF network element receives the service event reported by the UPF network element, and judges the service event to be service start or service end; S232, if the service event is service start, the SMF network element obtains the QOS parameter information corresponding to the service from the PCF network element, and modifies the special QOS flow to GBR state according to the QOS parameter information; S233, if the service event is service end, the SMF network element modifies the special QOS flow to Non-GBR state. 2.The method of claim 1, wherein, The step S21 is specifically: The SMF network element issues the information of the special QOS flow and the corresponding PDR to the UPF network element, and enables the use condition reporting function of the special QOS flow for the UPF network element; The step S22 is specifically: The UPF network element receives the information of the special QOS flow and the PDR, determines the special QOS flow corresponding to the terminal UE according to the information of the special QOS flow, and detects the service of the terminal UE according to the PDR, and reports the corresponding service event to the SMF network element when detecting the start or end of the service conforming to the PDR. 3.A system for dynamic adjustment of QOS flow for 5G communication, characterized in that, The SMF network element and the UPF network element connected by a packet communication connection, the SMF network element is used for receiving a session establishment request initiated by a terminal UE, and establishing a dedicated QOS flow for the terminal UE; according to the received notification information, dynamically adjusting the attribute of the dedicated QOS flow to be GBR or Non-GBR; The SMF network element is specifically used for receiving a session establishment request initiated by a terminal UE, obtaining the subscription information of the terminal UE from a UDM network element according to the session establishment request, and judging whether the subscription information identifies that the service of the terminal UE needs GBR broadband guarantee; if the subscription information identifies that the service of the terminal UE needs GBR broadband guarantee, the SMF network element establishes a default QOS flow of Non-GBR and a dedicated QOS flow with an initial state of Non-GBR for the terminal UE; The UPF network element is used for monitoring the service information of the terminal UE in real time, and notifying the SMF network element of the service usage change of the terminal UE; The SMF network element is used for issuing the PDR of the dedicated QOS flow to the UPF network element; according to the service event reported by the UPF network element, judging whether the service event is service start or service end, and combining the QOS parameter information of the service to switch the state of the GBR or Non-GBR of the dedicated QOS flow; The UPF network element is used for receiving and detecting the service of the terminal UE according to the PDR, and if the detected service conforms to the PDR, reporting the service event to the SMF network element; The SMF network element is specifically used for receiving the service event reported by the UPF network element, judging whether the service event is service start or service end; if the service event is service start, the SMF network element obtains the QOS parameter information corresponding to the service from a PCF network element, and modifies the dedicated QOS flow to GBR state according to the QOS parameter information; if the service event is service end, the SMF network element modifies the dedicated QOS flow to Non-GBR state. 4.The system of claim 3, wherein, The SMF network element is specifically used for issuing the information of the dedicated QOS flow and the corresponding PDR to the UPF network element, and enabling the UPF network element to report the usage of the dedicated QOS flow; The UPF network element is specifically used for receiving the information of the dedicated QOS flow and the PDR, determining the dedicated QOS flow corresponding to the terminal UE according to the information of the dedicated QOS flow, and detecting the service of the terminal UE according to the PDR; when detecting the start or end of the service conforming to the PDR, reporting the corresponding service event to the SMF network element.

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