WO2020001102A1

WO2020001102A1 - Congestion control method, device and apparatus

Info

Publication number: WO2020001102A1
Application number: PCT/CN2019/079841
Authority: WO
Inventors: 邓强
Original assignee: 电信科学技术研究院有限公司
Priority date: 2018-06-27
Filing date: 2019-03-27
Publication date: 2020-01-02
Also published as: TWI749312B; TW202002688A; CN110650495A

Abstract

Disclosed are a congestion control method, device and apparatus, which are used for solving the problem in the prior art of an access control and mobility management function network element or a session management function network element being overloaded. The method comprises: a UE sending an indication of supporting the capability of a control plane data backoff timer to an access and mobility management function network element or a session management function network element; the UE receiving duration information, indicated by the access and mobility management function network element or the session management function network element, of the control plane data backoff timer, wherein the control plane data backoff timer is set for the UE by the access and mobility management function network element or the session management function network element when the access and mobility management function network element or the session management function network element is overloaded; and the UE starting the control plane data backoff timer and not transmitting data through the control plane until the control plane data backoff timer expires.

Description

Congestion control method, equipment and device

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on June 27, 2018, with application number 201810679731.1, and the invention name is "a method, device, and device for congestion control", the entire contents of which are incorporated herein by reference Applying.

Technical field

The present invention relates to the field of mobile communication technologies, and in particular, to a congestion control method, device, and device.

Background technique

In order to support the transmission of infrequent small data, the 3rd Generation Partnership Project (3GPP) is researching a control plane (Control Plane) transmission scheme in R16, that is, through the non-access layer (Non-access stratum, NAS) messages transmit data between the UE and the network, and the specific data transmission path is: the user terminal (User Equipment) encapsulates the data in a Session Management (SM) message and passes the NAS The message is sent to the access control and mobility management function (AMF) network element, and the AMF network element sends the data to the session management function (SMF) network element through the N11 message, and the SMF network The element sends the data to a User Plane Function (UPF) network element, and finally the UPF network element forwards the data to the application side. This transmission method can transmit data without establishing a user plane, which can effectively reduce signaling overhead and save power consumption of the UE. However, when a large number of UEs transmit data through this method, a large amount of NAS signaling will be generated, causing the access control and mobility management function network element or session management function network element to be overloaded and the network transmission path to be congested.

Summary of the invention

The present invention provides a congestion control method, device, and device, which are used to solve the problem of overload of an access control and mobility management function network element or a session management function network element in the prior art.

In a first aspect, an embodiment of the present invention provides a congestion control method, including:

The UE sends an instruction to support the control plane data backoff timer capability to the access and mobility management function network element or the session management function network element;

Receiving, by the UE, control plane data backoff timer duration information indicated by the access and mobility management function network element or the session management function network element; the control plane data backoff timer is an access and mobility management function When the network element or the session management function network element is overloaded, the access and mobility management function network element or the session management function network element is set to the UE;

The UE starts the control plane data backoff timer, and does not transmit data through the control plane before the control plane data backoff timer expires.

In the above scheme, the UE sends an instruction to support the control plane data backoff timer capability to the AMF network element or the SMF network element SMF network element SMF network element. If the AMF network element or the SMF network element is overloaded, the control plane data backoff is returned. A timer is given to the UE, the UE starts the control plane data backoff timer after receiving the control plane data backoff timer, and does not transmit through the control plane before the control plane data backoff timer expires Data, thus solving the problem of overloading the access and mobility management function network element or the session management function network element in the prior art.

Optionally, the sending, by the UE to the access and mobility management function network element or the session management function network element, an instruction to support the control plane data backoff timer capability specifically includes that the UE uses a non-access layer mobility management message. Sending an instruction to the access and mobility management function network element to support the control plane data backoff timer capability; or, the UE sends control plane data to the session management function network element via a non-access layer session management message Indication of backoff timer capability.

In this embodiment, the UE may send an indication of supporting a control plane data backoff timer capability to the access and mobility management function network element through a non-access layer mobility management message, or may send a non-access layer session management message to the access and mobility management function network element. The session management function network element sends an instruction to support the control plane data backoff timer capability, which improves the flexibility of the congestion control scheme.

Optionally, the receiving, by the UE, the control plane data backoff timer duration information indicated by the access and mobility management function network element or the session management function network element specifically includes that the UE moves through a non-access layer Receiving the control plane data backoff timer duration information indicated by the access and mobility management function network element; or the UE receives the control indicated by the session management function network element through a non-access layer session management message Area data backoff timer duration information.

In this embodiment, the UE may receive the control plane data back-off timer duration information indicated by the access and mobility management function network element through a non-access layer mobility management message, or may receive the information through a non-access layer session management message. The control plane data backoff timer duration information indicated by the session management function network element is described, which improves the flexibility of the congestion control scheme.

Optionally, after the UE sends an instruction to support a control plane data backoff timer capability to an access and mobility management function network element or a session management function network element, the method further includes that the UE receives the access And the cause value sent by the mobility management function network element or the session management function network element, the cause value is used to indicate to the UE that the control plane data transmission transmitted by the UE is successful or failed.

In this embodiment, the access and mobility management function network element or the session management function network element may indicate to the UE whether the control plane data transmitted by the UE is transmitted successfully or fails. While solving the network congestion problem, the control plane is guaranteed. Reliability of data transmission.

Optionally, the receiving of the cause value sent by the access and mobility management function network element or the session management function network element specifically includes: the access and mobility management function network element or session management function When the network element is overloaded, the UE receives a cause value sent by the access and mobility management function network element or the session management function network element to indicate a control plane transmission failure transmitted by the UE; or When the access and mobility management function network element or the session management function network element is overloaded and the release assistance information provided by the UE indicates that there is no subsequent uplink or downlink data transmission, the UE receives the access and mobility management function network A cause value sent by the network element or the session management function network element to indicate that the control plane data transmitted by the UE is successfully sent.

In this embodiment, according to whether the UE provides release assistance information, it is determined whether to discard control plane data transmitted by the UE, and to send to the UE an indication of data transmission failure after discarding the control plane data transmitted by the UE. The cause value is a cause value sent to the UE after indicating that the control plane data transmitted by the UE is successfully sent to indicate that the data transmission was successful. While solving the problem of network congestion, the reliability of the control plane data transmission is ensured.

Optionally, after the UE sends an instruction to support a control plane data backoff timer capability to an access and mobility management function network element or a session management function network element, the method further includes that the UE receives the access And a protocol data unit session identifier sent by the mobility management function network element or the session management function network element, where the protocol data unit session identifier is used to indicate to the UE a protocol data unit session in a congested state.

In this embodiment, when the session management function network element is overloaded, the UE is further provided with a data unit session identifier for indicating to the UE that the protocol data unit session is in a congested state, so that the UE can clearly identify the protocol data unit session in the congested state. To improve the accuracy and reliability of congestion control.

Optionally, that the UE does not transmit data through the control plane before the control plane data backoff timer expires specifically includes that the UE does not pass the protocol data unit session before the control plane data backoff timer expires The corresponding control plane transmits data.

In this embodiment, when the session management function network element is overloaded, the UE does not transmit data through the control plane corresponding to the protocol data unit session before the control plane data backoff timer expires, which improves the accuracy of the congestion control.

In a second aspect, an embodiment of the present invention provides a congestion control method, including: an access and mobility management function network element receiving an indication that the UE supports a control plane data backoff timer capability sent by the UE; the access and mobility The performance management function network element sends control plane data backoff timer duration information to the UE, so that the UE starts the control plane data backoff timer and does not pass the control plane data backoff timer before the control plane data backoff timer expires. Control plane transmission data; wherein the control plane data backoff timer is set to the access and mobility management function network element when the access and mobility management function network element or the session management function network element is overloaded UE.

In this embodiment, when an access and mobility management function network element or a session management function network element is overloaded, the access and mobility management function network element sends a control plane data backoff timer to the UE, so that the UE is receiving the After the control plane data back-off timer is started, the control plane data back-off timer is started, and data is not transmitted through the control plane before the control plane data back-off timer expires, thereby solving access and mobility in the prior art The management NE or session management NE is overloaded.

Optionally, the receiving and mobility management function network element receiving the indication that the UE supports the control plane data backoff timer capability sent by the UE specifically includes that the access and mobility management function network element passes a non-access layer The mobility management message receives an indication that the UE supports a control plane data backoff timer capability sent by the UE; or, the access and mobility management function network element receives the UE sent by the UE through a non-access layer session management message. Supports control plane data backoff timer capability indication.

In this embodiment, the access and mobility management function network element may receive an indication that the UE supports the control plane data backoff timer capability sent by the UE through a non-access layer mobility management message, or may use a non-access layer session management The message receiving UE sends an indication that the UE supports the control plane data backoff timer capability, which improves the flexibility of the congestion control scheme.

Optionally, the access and mobility management function network element sending control plane data backoff timer duration information to the UE specifically includes that the access and mobility management function network element passes the non-access layer mobility The management message sends control plane data backoff timer duration information to the UE; or the access and mobility management function network element sends control plane data backoff timer duration information to the UE through a non-access layer session management message. .

In this embodiment, the access and mobility management function network element may send control plane data backoff timer duration information to the UE through a non-access layer mobility management message, or may send the control plane data back-off timer duration information to the UE to the UE. The UE sends control plane data backoff timer duration information, which improves the flexibility of the congestion control scheme.

Optionally, before the access and mobility management function network element sends control plane data backoff timer duration information to the UE, the method further includes: the access and mobility management function network element receives the Overload information sent by the session management function network element, where the overload information is used to indicate that the session management function network element is overloaded.

In this embodiment, an access and mobility management network element may determine that the session management network element is overloaded by using overload information sent by the session management network element, thereby improving the reliability of the congestion control scheme.

Optionally, after the access and mobility management function network element receives an indication that the UE supports a control plane data backoff timer capability sent by the UE, the method further includes: the access and mobility management function network The yuan sends a cause value to the UE, where the cause value is used to indicate to the UE that the control plane data transmission transmitted by the UE is successful or failed.

In this embodiment, the access and mobility management function network element may indicate to the UE whether the control plane data transmitted by the UE is transmitted successfully or fails, while solving the problem of network congestion, and ensuring the reliability of control plane data transmission.

Optionally, the access and mobility management function network element sending the cause value to the UE specifically includes: when the access and mobility management function network element or the session management function network element is overloaded, the access And the mobility management function network element sends to the UE a value indicating the reason for failure in sending control plane data transmitted by the UE; or when the access and mobility management function network element or the session management function network element is overloaded And when the release assistance information provided by the UE indicates that there is no subsequent uplink or downlink data transmission, the access and mobility management function network element sends to the UE a reason for indicating that the control plane data transmitted by the UE was successfully sent value.

In this embodiment, the access and mobility management function network element determines whether to discard the control plane data transmitted by the UE according to whether the UE provides release assistance information, and sends the usage information to the UE after discarding the control plane data transmitted by the UE. The cause value indicating the failure of data transmission is sent to the UE after the control plane data transmitted by the UE is successfully transmitted, indicating the cause value of the successful data transmission. While solving the problem of network congestion, the control plane data transmission is guaranteed. reliability.

Optionally, before the access and mobility management function network element sends to the UE a reason value indicating that the control plane data transmitted by the UE is successfully sent, the method further includes: the access and mobility The sexual management function network element receives release assistance information sent by the UE; the release assistance information is used to indicate that there is no subsequent uplink or downlink data transmission.

In this embodiment, the UE provides release assistance information to the access and mobility management function network element, thereby causing the access and mobility management function network element to overload the access and mobility management function network element or the session management function network element. Continue to send control plane data received from the UE, and send a reason value to the UE to indicate that the control plane data transmitted by the UE was successfully sent. While solving the problem of network congestion, the control plane data transmission is guaranteed. Reliability.

Optionally, after the access and mobility management function network element receives an indication that the UE supports a control plane data backoff timer capability sent by the UE, the method further includes: the access and mobility management function network The meta sends a protocol data unit session identifier to the UE, and the protocol data unit session identifier is used to indicate to the UE that the protocol data unit session is in a congested state.

In this embodiment, when the session management function network element is overloaded, the access and mobility management function network element also provides the UE with a data unit session identifier for indicating to the UE that the protocol data unit session is in a congested state, so that the UE can The protocol data unit session is clearly congested, which improves the accuracy and reliability of congestion control.

Optionally, before the access and mobility management function network element sends a protocol data unit session identifier to the UE, the method further includes: the access and mobility management function network element according to the session management function The overload information sent by the network element determines the protocol data unit session identifier associated with the session management function.

Optionally, after the access and mobility management function network element receives an indication that the UE supports a control plane data backoff timer capability sent by the UE through a non-access layer mobility management message, the method further includes: The access and mobility management function network element indicates to the session management function network element that the UE supports a control plane data backoff timer capability.

In this embodiment, the access and mobility management function network element may forward the indication of the control plane data backoff timer capability received from the UE to the session management function network element, so that the session management function network element is overloaded. At the same time, the corresponding congestion control scheme is executed to improve the reliability of the congestion control.

According to a third aspect, an embodiment of the present invention provides a congestion control method, including: a session management function network element receives an indication that the UE supports a control plane data backoff timer capability sent by the UE; and the session management function network element reports to the The UE sends control plane data backoff timer duration information to enable the UE to start the control plane data backoff timer and not transmit data through the control plane before the control plane data backoff timer expires; the control The face data backoff timer is set by the session management function network element to the UE when the session management function network element is overloaded.

In this embodiment, when the session management function network element is overloaded, the session management function network element sends a control plane data backoff timer to the UE, so that the UE starts the control plane data backoff timer after receiving the control plane data backoff timer. And does not transmit data through the control plane before the control plane data back-off timer expires, thereby solving the problem of overloading the session management function network element in the prior art.

Optionally, the receiving, by the session management function network element, an indication that the UE supports the control plane data backoff timer capability sent by the UE specifically includes: the session management function network element receiving a non-access layer session management message sent by the UE An indication that the UE supports a control plane data backoff timer capability included in the UE; or that the session management function network element receives an access and mobility management function network element that the UE supports the control plane data backoff timer capability An indication, wherein the indication that the UE supports the control plane data backoff timer capability is sent by the UE to the access and mobility management function network element through a non-access layer mobility management message.

In this embodiment, the session management function network element may receive the UE support control plane data backoff timer capability indication through a non-access layer session management message, and may also receive the UE support control plane from the access and mobility management function network element. The indication of the data backoff timer capability improves the flexibility of the congestion control scheme.

Optionally, the session management function network element sending control plane data backoff timer duration information to the UE specifically includes: the session management function network element sends the control plane to the UE through a non-access layer session management message. Data backoff timer duration information.

In this implementation manner, the session management function network element sends control plane data backoff timer duration information to the UE through a non-access layer session management message, thereby enabling the UE to start all data planes after receiving the control plane data backoff timer. The control plane data back-off timer is described, and data is not transmitted through the control plane before the control plane data back-off timer expires, which solves the problem of overload of the session management function network element in the prior art.

Optionally, after the session management function network element receives an indication that the UE supports the control plane data backoff timer capability sent by the UE, the method further includes: the session management function network element sends a cause value to the UE The reason value is used to indicate to the UE that data transmission is successful or failed.

In this embodiment, the session management function network element may indicate to the UE whether the control plane data transmitted by the UE is transmitted successfully or fails, while solving the problem of network congestion, and ensuring the reliability of control plane data transmission.

Optionally, the sending of the cause value by the session management function network element to the UE specifically includes: when the session management function network element is overloaded, the session management function network element sends the UE to indicate the UE The cause value of the transmission failure of the transmitted control plane data; or when the session management function network element is overloaded and the release assistance information provided by the UE indicates that there is no subsequent uplink or downlink data transmission, the session management function network element sends The reason value sent by the UE to indicate that the control plane data transmitted by the UE is successfully sent.

In this embodiment, the session management function network element determines whether to discard the control plane data transmitted by the UE according to whether the UE provides release assistance information, and instructs the UE to send data after discarding the control plane data transmitted by the UE. The cause value of the failure is a cause value that is sent to the UE to indicate that the data transmission is successful after the control plane data transmitted by the UE is successfully transmitted, and the reliability of the control plane data transmission is ensured while solving the network congestion problem.

Optionally, before the session management function network element sends to the UE a reason value indicating that the control plane data transmitted by the UE is successfully sent, the method further includes: the session management function network element receives the Release assistance information sent by the UE, where the release assistance information is used to indicate that there is no subsequent uplink or downlink data transmission.

In this embodiment, the UE provides release assistance information to the session management function network element, so that when the session management function network element is overloaded, it continues to send control plane data received from the UE, and sends to the UE an instruction The reason for the successful transmission of the control plane data transmitted by the UE is described. While solving the network congestion problem, the reliability of the control plane data transmission is guaranteed.

Optionally, after the session management function network element receives an indication that the UE supports the control plane data backoff timer capability sent by the UE, the method further includes: the session management function network element sends protocol data to the UE A unit session identifier, which is used to indicate to the UE a protocol data unit session in a congested state.

In this embodiment, when the session management function network element is overloaded, the session management function network element also provides the UE with a data unit session identifier for indicating to the UE that the protocol data unit session is in a congested state, so that the UE can be clearly in a congested state. The protocol data unit session improves the accuracy and reliability of congestion control.

In a fourth aspect, an embodiment of the present invention provides a congestion control device, including: a memory for storing computer instructions; a communication interface for sending a support control plane to an access and mobility management function network element or a session management function network element Indication of data backoff timer capability; receiving control plane data backoff timer duration information indicated by the access and mobility management function network element or the session management function network element; the control plane data backoff timer is access And when the mobility management function network element or the session management function network element is overloaded, the access and mobility management function network element or the session management function network element is set to the device; a processor, and the memory and The communication interface is communicably connected to execute a computer instruction in the memory to start the control plane data back-off timer when the computer instruction is executed, and control the communication interface to back off data on the control plane. No data is transmitted through the control plane until the timer expires.

Optionally, the communication interface is specifically configured to send an indication of supporting a control plane data backoff timer capability to the access and mobility management function network element through a non-access layer mobility management message; or, The inbound session management message sends an indication to the session management function network element to support the control plane data backoff timer capability.

Optionally, the communication interface is specifically configured to receive control plane data backoff timer duration information indicated by the access and mobility management function network element through a non-access layer mobility management message; or, through non-access The layer session management message receives the control plane data backoff timer duration information indicated by the session management function network element.

Optionally, the communication interface is further configured to: after sending an instruction to support a control plane data backoff timer capability to an access and mobility management network element or a session management function network element, receive the access and mobility management The cause value sent by the functional network element or the session management functional network element, the cause value is used to indicate to the device whether the control plane data transmission transmitted by the device is successful or failed.

Optionally, the communication interface is specifically configured to receive the access and mobility management function network element or the session management function when the access and mobility management function network element or the session management function network element is overloaded. A value sent by a network element to indicate a cause of failure of the control plane transmission of the device transmission; or, when the access and mobility management function network element or the session management function network element is overloaded and the release assistance information provided by the device When it is indicated that there is no subsequent uplink or downlink data transmission, a cause value sent by the access and mobility management function network element or the session management function network element to indicate that the control plane data transmitted by the device is transmitted successfully is received.

Optionally, the communication interface is further configured to: after sending an instruction to support a control plane data backoff timer capability to an access and mobility management network element or a session management function network element, receive the access and mobility management A protocol data unit session identifier sent by the functional network element or the session management function network element, and the protocol data unit session identifier is used to indicate to the device a protocol data unit session in a congested state.

Optionally, the processor is specifically configured to control the communication interface not to transmit data through the control plane corresponding to the protocol data unit session before the control plane data backoff timer expires.

According to a fifth aspect, an embodiment of the present invention provides a congestion control device, including: a memory for storing computer instructions; a communication interface for communicating with a UE; a processor for communicatively connecting with the memory and the communication interface, Configured to execute a computer instruction in the memory to control the communication interface to perform the following operations when the computer instruction is executed: receiving an indication that the UE supports a control plane data backoff timer capability sent by the UE; The UE sends control plane data backoff timer duration information, so that the UE starts the control plane data backoff timer, and does not transmit data through the control plane before the control plane data backoff timer expires; wherein, The control plane data back-off timer is set by the device to the UE when the device or a session management function network element is overloaded.

Optionally, the communication interface is specifically configured to receive an indication that the UE supports a control plane data backoff timer capability sent by the UE through a non-access layer mobility management message; or, through non-access layer session management The message receives an indication that the UE supports a control plane data backoff timer capability sent by the UE.

Optionally, the communication interface is specifically configured to send control plane data backoff timer duration information to the UE through a non-access layer mobility management message; or send to the UE through a non-access layer session management message. Control plane data backoff timer duration information.

Optionally, the communication interface is further configured to: before sending control plane data backoff timer duration information to the UE, receive overload information sent by the session management function network element, where the overload information is used to indicate the session The management function network element is overloaded.

Optionally, the communication interface is further configured to: after receiving an indication that the UE supports a control plane data backoff timer capability sent by the UE, send a cause value to the UE, where the cause value is used to send to the UE The UE indicates that the control plane data transmission transmitted by the UE is successful or failed.

Optionally, the communication interface is specifically configured to: when the device or the session management function network element is overloaded, send to the UE a value indicating a reason for failure in sending control plane data transmitted by the UE; or When the device or the session management function network element is overloaded and the release assistance information provided by the UE indicates that there is no subsequent uplink or downlink data transmission, a reason value for indicating that the control plane data transmitted by the UE is successfully transmitted is sent to the UE.

Optionally, the communication interface is further configured to: before sending to the UE a reason value indicating that the control plane data transmitted by the UE is successfully transmitted, receive release assistance information sent by the UE; and the release assistance information Used to indicate that there is no subsequent uplink or downlink data transmission.

Optionally, the communication interface is further configured to: after receiving an indication that the UE supports a control plane data backoff timer capability sent by the UE, send a protocol data unit session identifier to the UE, and the protocol data unit session Identifies a protocol data unit session used to indicate to the UE in a congested state.

Optionally, the communication interface is further configured to: before sending a protocol data unit session identifier to the UE, determine the protocol data unit associated with the session management function according to overload information sent by the session management function network element Session ID.

Optionally, the communication interface is further configured to: after receiving an indication that the UE supports a control plane data backoff timer capability sent by the UE through a non-access layer mobility management message, send the message to the session management function network element Instruct the UE to support the control plane data backoff timer capability.

According to a sixth aspect, an embodiment of the present invention provides a congestion control device, including: a memory for storing computer instructions; a communication interface for communicating with a UE; a processor for communicatively connecting with the memory and the communication interface, Configured to execute a computer instruction in the memory to control the communication interface to perform the following operations when the computer instruction is executed: receiving an indication that the UE supports a control plane data backoff timer capability sent by the UE; Said UE sending control plane data backoff timer duration information to enable said UE to start said control plane data backoff timer and not transmit data through said control plane before said control plane data backoff timer expires; said When the control plane data backoff timer is overloaded on the communication interface, the communication interface is set to the UE.

Optionally, the communication interface is specifically configured to: receive an indication that the UE supports a control plane data backoff timer capability included in the non-access stratum session management message sent by the UE; or receive access and mobility The indication that the UE supports the control plane data backoff timer capability sent by the management function network element, wherein the indication that the UE supports the control plane data backoff timer capability is sent by the UE to the non-access layer mobility management message to The access and mobility management function of the network element.

Optionally, the communication interface is specifically configured to: the communication interface sends control plane data backoff timer duration information to the UE through a non-access layer session management message.

Optionally, the communication interface is further configured to: after receiving an indication that the UE supports a control plane data backoff timer capability sent by the UE, send a cause value to the UE, where the cause value is used to send to the UE The UE indicates that the data transmission is successful or failed.

Optionally, the communication interface is specifically configured to: when the device is overloaded, send to the UE a value indicating a reason for failure in sending control plane data transmitted by the UE; or when the device is overloaded and the When the release assistance information provided by the UE indicates that there is no subsequent uplink or downlink data transmission, a reason value indicating that the control plane data transmitted by the UE is successfully transmitted is sent to the UE.

Optionally, the communication interface is further configured to: before sending to the UE a reason value indicating that the control plane data transmitted by the UE is transmitted successfully, receive release assistance information sent by the UE, and the release assistance information Used to indicate that there is no subsequent uplink or downlink data transmission.

According to a seventh aspect, an embodiment of the present invention provides a congestion control apparatus, including: a sending unit, configured to send an instruction to support a control plane data backoff timer capability to an access and mobility management function network element or a session management function network element; A receiving unit, configured to receive control plane data backoff timer duration information indicated by the access and mobility management function network element or the session management function network element; the control plane data backoff timer is access and mobility When the management function network element or the session management function network element is overloaded, the access and mobility management function network element or the session management function network element is set to the device;

A processing unit, configured to start the control plane data backoff timer and not transmit data through the control plane before the control plane data backoff timer expires.

According to an eighth aspect, an embodiment of the present invention provides a congestion control apparatus, including: a receiving unit configured to receive an indication that the UE supports a control plane data backoff timer capability sent by the UE; and a sending unit configured to send to the UE Control plane data backoff timer duration information, so that the UE starts the control plane data backoff timer and does not transmit data through the control plane before the control plane data backoff timer expires; wherein the control The face data backoff timer is set by the device to the UE when the device or a session management function network element is overloaded.

In a ninth aspect, an embodiment of the present invention provides a congestion control apparatus, including: a receiving unit configured to receive an indication that the UE supports a control plane data backoff timer capability sent by the UE; and a sending unit configured to send to the UE Control plane data backoff timer duration information, so that the UE starts the control plane data backoff timer and does not transmit data through the control plane before the control plane data backoff timer expires; the control plane data The back-off timer is set by the device to the UE when the device is overloaded.

According to a tenth aspect, an embodiment of the present invention provides a computer-readable storage medium, where the computer-readable storage medium stores computer instructions, and when the computer instructions are run on a computer, the computer is caused to execute the first aspect of the embodiment of the present invention , The method of the second aspect, or the third aspect.

The one or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

The UE sends an instruction to support the control plane data backoff timer capability to the AMF network element or the SMF network element SMF network element SMF network element. If the AMF network element or the SMF network element is overloaded, it returns a control plane data backoff timer to the UE, the UE starts the control plane data backoff timer after receiving the control plane data backoff timer, and does not transmit data through the control plane before the control plane data backoff timer expires, which solves the problem There is a problem that the AMF network element or the SMF network element is overloaded in the technology.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to explain the technical solutions in the embodiments of the present invention more clearly, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. Those of ordinary skill in the art can also obtain other drawings according to these drawings without paying creative labor.

FIG. 1 is a schematic flowchart of a Control Plane transmission method;

2 is a schematic flowchart of a congestion control method according to an embodiment of the present invention;

3 is a schematic flowchart of a congestion control method according to an embodiment of the present invention;

4 is a schematic flowchart of a congestion control method according to an embodiment of the present invention;

5 is a schematic flowchart of a congestion control method according to an embodiment of the present invention;

6 is a schematic flowchart of a congestion control method according to an embodiment of the present invention;

7 is a schematic structural diagram of a congestion control device according to an embodiment of the present invention;

8 is a schematic structural diagram of a congestion control device according to an embodiment of the present invention;

9 is a schematic structural diagram of a congestion control device according to an embodiment of the present invention;

10 is a schematic structural diagram of a congestion control device according to an embodiment of the present invention;

11 is a schematic structural diagram of a congestion control device according to an embodiment of the present invention;

FIG. 12 is a schematic structural diagram of a congestion control device according to an embodiment of the present invention.

detailed description

In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It should be understood that the technical solution of the present invention can be applied to various communication systems, such as: Global System (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access Address (Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) System, Universal Mobile Telecommunication System (UMTS), New Radio (NR), etc.

It should also be understood that, in the embodiments of the present invention, the user equipment (UE) includes, but is not limited to, a mobile station (MS), a mobile terminal (Mobile), a mobile phone (Mobile), and a mobile phone (handset). And portable equipment (portable equipment), the user equipment can communicate with one or more core networks via a Radio Access Network (RAN). For example, the user equipment can be a mobile phone (or "cellular" Telephone), a computer with wireless communication function, etc. The user equipment may also be a portable, compact, handheld, computer-built or vehicle-mounted mobile device.

In the embodiment of the present invention, a base station (for example, an access point) may refer to a device in an access network that communicates with a wireless terminal through one or more sectors on an air interface. The base station can be used to convert the received air frames and IP packets to each other, and serve as a router between the wireless terminal and the rest of the access network, where the rest of the access network can include an Internet Protocol (IP) network. The base station can also coordinate the attribute management of the air interface. For example, the base station can be a base station (Base Transceiver Station, BTS) in GSM or CDMA, or a base station (NodeB) in TD-SCDMA or WCDMA, or an evolved base station (eNodeB or eNB or e- NodeB, evolutional (NodeB), or base station (gNB) in 5G NR, the present invention is not limited.

The technical solutions of the present invention are described in detail below through the drawings and specific embodiments. It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical solutions of the present invention, rather than limiting the technical solutions of the present invention. In the case of no conflict, the embodiments of the present invention and the technical features in the embodiments can be combined with each other.

The embodiments of the present invention can be applied to a 5G system; it can also be applied to other wireless communication systems, such as a Long Term Evolution (LTE) system, a Global System for Mobile Communication (GSM), and a mobile communication system ( Universal Mobile Telecommunications System (UMTS), Code Division Multiple Access (CDMA) system, and new network equipment systems.

The user terminal UE involved in this embodiment of the present invention may be a device that provides voice and / or data connectivity to the user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem. A wireless user terminal can communicate with one or more core networks via a Radio Access Network (RAN). The wireless user terminal can be a mobile terminal, such as a mobile phone (or a "cellular" phone) and a mobile terminal. The computer, for example, may be a portable, pocket, handheld, computer-built or vehicle-mounted mobile device that exchanges language and / or data with a wireless access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), and other devices . A wireless user terminal can also be called a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a mobile station, a remote station, and an access point. , Remote Terminal (Remote Terminal), Access Terminal (Access Terminal), User Terminal (User Terminal), User Agent (User Agent), User Terminal (User Device).

It should be understood that each network element shown in this article may be a physical concept, for example, it may be a single device physically, or at least two network elements may be integrated on the same physical device, or A network element can also be a logical concept, such as a software module or a network function corresponding to the services provided by each network element. The network function can be understood as a virtualization function under virtualization implementation, and can also be understood as being provided under a serviced network. The network function of the service, for example, a network function dedicated to access control and mobility management functions, or a network function dedicated to session management functions, etc., is not specifically limited in the embodiment of the present invention.

It should be understood that in the description of the embodiment of the present invention, words such as "first" and "second" are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance, nor as indicating Or imply order. In the description of the embodiment of the present invention, “multiple” means two or more.

The term “and / or” in the embodiment of the present invention is only an association relationship describing an associated object, and indicates that there can be three types of relationships. For example, A and / or B may indicate that A exists alone, and A and B, there are three cases of B alone. In addition, the character "/" in this text generally indicates that the related objects are an "or" relationship.

In order to facilitate understanding of the technical solution of the embodiment of the present invention, the Control Plane transmission process is first introduced. Referring to FIG. 1, the Control Plane transmission process mainly includes the following steps:

S0: UE is in idle state;

S1: The UE establishes a radio resource control (Radio Resource Control, RRC) connection, and sends a NAS protocol data unit (Protocol Data Unit, PDU) through an RRC message. Among them, the NAS PDU includes a Session Management (SM) data transfer (data transfer) message and a PDU Session ID (PDU), and the SM data transfer message contains data that the UE needs to transfer;

S2: The RAN network element sends the NAS PDU to the AMF network element;

S3: AMF network element performs integrity protection verification and decrypts data;

S4: The AMF network element sends the SM data transfer message and the PDU Session ID to the SMF network element;

S5: The SMF network element forwards the data that the UE needs to transmit to the UPF network element;

S6: The UPF network element forwards the downlink data that needs to be sent to the UE to the SMF network element;

S7: The SMF network element encapsulates the downlink data in an SM data transfer message and sends it to the AMF network element;

S8: The AMF network element performs data encryption and integrity protection, and sends a SM data transfer message and a PDU Session ID to the UE through a NAS message;

S9: the AMF network element sends the NAS message to the RAN;

S10: The RAN network element sends the NAS message to the UE through an RRC message;

S11: No further activity is detected by the RAN network element;

S12: The RAN network element determines that the data transmission is completed, and initiates an RCC connection release process.

Embodiments of the present invention provide a congestion control method, device, and device, which are used to solve the problem of overloading an AMF network element or an SMF network element in the prior art. The methods, devices, and devices described in the present invention are based on the same inventive concept. Since the methods, devices, and devices solve the problem of similar principles, the implementation of the methods, devices, and devices can be referred to each other, and repeated descriptions will not be repeated.

Referring to FIG. 2, a congestion control method provided by an embodiment of the present invention includes the following steps:

S101: The UE sends an instruction to support the control plane data backoff timer capability to the AMF network element or the SMF network element.

Specifically, the UE sends an indication of supporting a control plane data back-off timer capability to the AMF network element through a non-access layer mobility management message; or The inbound session management message sends an instruction to the SMF network element to support the control plane data backoff timer capability.

Correspondingly, when the UE sends an indication to the AMF network element to support the control plane data backoff timer capability, the AMF network element receives the UE support control plane sent by the UE through a non-access layer mobility management message. An indication of a data backoff timer capability, or an indication that the UE supports a control plane data backoff timer capability sent by the UE through a non-access layer session management message.

Correspondingly, when the UE sends an indication of supporting the control plane data backoff timer capability to the SMF network element, the SMF network element receives the UE included in the non-access layer session management message sent by the UE Support indication of control plane data backoff timer capability, or the SMF network element receives an indication that the UE supports control plane data backoff timer capability sent by the AMF network element, wherein the UE supports control plane data backoff timer capability The indication is sent by the UE to the AMF network element through a non-access stratum mobility management message.

S102: The UE receives control plane data backoff timer duration information indicated by the AMF network element or the SMF network element.

Wherein, when the control plane data backoff timer is an overload of the AMF network element or the SMF network element, the AMF network element or the SMF network element is set to the UE.

Specifically, the UE receives the control plane data backoff timer duration information indicated by the AMF network element through a non-access layer mobility management message; or receives the information indicated by the SMF network element through a non-access layer session management message. Control plane data backoff timer duration information.

Correspondingly, when the AMF network element or the SMF network element is overloaded, the AMF network element sends control plane data backoff timer duration information to the UE through a non-access layer mobility management message, or The access layer session management message sends control plane data backoff timer duration information to the UE. Alternatively, when the SMF network element is overloaded, the SMF network element sends control plane data backoff timer duration information to the UE through a non-access layer session management message.

In a specific implementation process, when the SMF network element is overloaded, the SMF network element may send overload information to the AMF network element to indicate that the SMF network element is overloaded. The overload information specifically includes a protocol data unit session identifier associated with the SMF network element, and the protocol data unit session identifier is used to indicate to the UE that the protocol data unit session is in a congested state. Correspondingly, when the AMF network element or the SMF network element returns the control plane data backoff timer, it may also return the protocol data unit session identifier at the same time.

Further, when the AMF network element or the SMF network element sends a control plane data backoff timer to the UE, it may also send a cause value at the same time, which is used to indicate the control plane data transmitted by the UE. Send success or failure.

Specifically, in order to accelerate the release of the NAS connection and reduce the UE power message, the UE may also provide Release Assistance Information (RAI) when transmitting control plane data to indicate that there is no subsequent uplink / downlink data transmission, or there is only one subsequent transmission. For downlink data transmission, the SMF network element can quickly initiate the NAS connection release process after the data transmission is completed. When the SMF network element is overloaded, if the SMF network element receives the release assistance information sent by the UE, the SMF network element continues to send the control plane data transmitted by the UE to the UPF or the network open function ( Network Exposure Function (NEF), and returns a cause value to the UE to indicate that the data transmission was successful; if the SMF network element does not receive the release assistance information, the control plane data transmitted by the UE is discarded and sent to the UE for indicating the Cause value of the control plane data transmission failure transmitted by the UE. The SMF network element may send the cause value to the AMF network element first, and then the AMF network element returns the cause value to the UE. When the AMF network element is overloaded, if the AMF network element receives the release assistance information sent by the UE, the AMF network element continues to send the control plane data transmitted by the UE to the SMF network element and sends it to the SMF network element. The UE returns a cause value to indicate that the data transmission was successful. If the AMF network element does not receive the release assistance information sent by the UE, the AMF network element discards the control plane data transmitted by the UE and sends the control plane data to the UE to indicate that the The reason why the control plane data transmission failed transmitted by the UE is described.

S103: The UE starts the control plane data backoff timer, and does not transmit data through the control plane before the control plane data backoff timer expires.

In a specific implementation process, if the AMF network element or the SMF network element in S102 also returns a protocol data unit session identifier when returning the control plane data backoff timer, the specific implementation of S103 includes: the UE Before the control plane data backoff timer expires, data is not transmitted through the control plane corresponding to the protocol data unit session.

In the above scheme, the UE sends an instruction to the AMF network element or the SMF network element to support the control plane data backoff timer capability. If the AMF network element or the SMF network element is overloaded, the control plane data backoff timer is returned to the UE. , The UE starts the control plane data backoff timer after receiving the control plane data backoff timer, and does not transmit data through the control plane before the control plane data backoff timer expires, thereby solving the current problem. There is a problem that the AMF network element or the SMF network element is overloaded in the technology.

In the following, several specific complete embodiments are used to introduce the congestion control method in the present invention. The following embodiments mainly introduce the possible implementation process of the congestion control method. It should be noted that the embodiments in the present invention are only used to explain the present invention, and cannot be used to limit the present invention. All the embodiments conforming to the idea of the present invention are within the protection scope of the present invention, and those skilled in the art naturally know how to deform according to the idea of the present invention.

Example 1:

In this embodiment, the UE indicates to the AMF network element that it supports the control plane data backoff timer capability during the registration process. When the SMF network element is overloaded, the AMF network element indicates the control plane data backoff timer duration information to the UE during the registration process. Referring to FIG. 3, specific implementation steps include:

S201: In a Registration Request message, the UE indicates to the AMF network element that it supports the control plane data back-off timer capability. For example, the UE may include the indication information in the UE 5G Core Capability (Information Element, IE);

S202: AMF network elements, SMF network elements, etc. perform a registration procedure (Registration procedure) according to the process defined in TS 23.502, such as obtaining UE contract data from Unified Data Management (UDM) network elements;

S203: The AMF network element receives the SMF network element overload information from the SMF network element through the N11 message; the SMF network element overload information determines the PDU Session ID associated with the SMF network element, that is, the SMF network element Established PDU Session;

S204: The AMF network element provides the Control Plane data back-off timer time information and the corresponding PDU Session ID to the UE in the Registration Acceptance. After receiving the Control Plane data back-off timer information, the UE will not send data through the control plane until the Control Plane data back-off timer expires.

In this embodiment, the UE indicates to the AMF network element that it supports the control plane data backoff timer capability during the registration process. When the SMF network element is overloaded, the AMF network element indicates the control plane data backoff timer duration information to the UE during the registration process. The UE is enabled to start the control plane data backoff timer and does not transmit data through the control plane before the control plane data backoff timer expires, which solves the problem of overloading SMF network elements in the prior art.

Example 2:

In this embodiment, the UE indicates to the AMF network element that it supports the control plane data backoff timer capability during the registration process. When the SMF network element is overloaded, the SMF network element indicates the control plane data backoff timer duration information to the UE during NAS message transmission. Referring to FIG. 4, the specific steps include:

S301-S303: Registration process of the UE. The UE indicates to the AMF network element that it supports Control Plane data back-off timer through the Registration Request message. For example, the UE may include the indication in the UE 5GC Capability; the UE implements the Registration process after receiving the Registration Accept message;

S304-S306: In the PDU session establishment process, the AMF network element instructs the SMF network element through the N11 message that the UE supports Control Plane data back-off timer;

S307-S310: The process for the UE to transmit data through NAS messages:

S307: The UE encapsulates the data in a NAS SM message and sends it to the AMF network element;

S308: The AMF network element sends the NAS SM message containing the data to the SMF network element through the N11 message;

S309: When the SMF network element is overloaded, the SMF network element discards the data, and returns the cause value and the Control Plane data back-off timer time information to the UE through the NAS SM message, where the cause value indicates to the UE that the data was not successfully sent;

S310: The AMF network element returns a cause value and Control Plane data back-off timer information to the UE. After receiving the Control Plane data back-off timer information, the UE will not send data through the control plane until the Control Plane data back-off timer expires.

Further, in order to speed up the release of the NAS connection and thereby reduce the UE power message, the UE may include Release Assistance Information (RAI) in the NAS SM message, which may indicate that the UE has no subsequent uplink / downlink data transmission, or only one subsequent one For downlink data transmission, the SMF network element can quickly initiate the NAS connection release process after the data transmission is completed. If the NAS SM message of the UE in step S307 contains RAI, and the RAI indicates that there is no subsequent uplink / downlink data transmission, then in step S309, the SMF network element will send the UE encapsulated in the NAS SM message to the UPF network element / NEF network element. Data, and return the cause value and the Control Plane data back-off timer time information to the UE through the NAS SM message, where the cause value indicates to the UE that the data transmission was successful.

In this embodiment, the UE indicates to the AMF network element that it supports the control plane data backoff timer capability during the registration process. When the SMF network element is overloaded, the SMF network element indicates the control plane data backoff timer duration information to the UE during the NAS message transmission process. In this way, the UE starts the control plane data backoff timer and does not transmit data through the control plane before the control plane data backoff timer expires, which solves the problem of overloading SMF network elements in the prior art.

Example 3:

This embodiment is similar to Embodiment 2 except that the UE indicates to the SMF network element that it supports the control plane data backoff timer capability through a NAS SM message. Referring to FIG. 5, the specific steps include:

S401-S403: The process of establishing a PDU session. The UE indicates to the SMF network element that it supports Control Plane data back-off timer capability in a PDU Session Establishment Request message. The SM message is sent by the AMF network element to the SMF network element.

S404-S407 is the same as steps S307-S310 in the second embodiment, and is a process in which the UE transmits data through a NAS message:

S404: The UE encapsulates the data in a NAS SM message and sends it to the AMF network element;

S405: The AMF network element sends the NAS SM message containing the data to the SMF network element through the N11 message;

S406: When the SMF network element is overloaded, the SMF network element discards the data and returns the cause value and the Control Plane data back-off timer time information to the UE through the NAS SM message, where the cause value indicates to the UE that the data was not successfully sent;

S407: The AMF network element returns a cause value and Control Plane data back-off timer time information to the UE. After receiving the back-off timer time information, the UE does not send data through the control plane until the back-off timer expires.

Further, in order to speed up the release of the NAS connection and thereby reduce the UE power message, the UE may include Release Assistance Information (RAI) in the NAS SM message, which may indicate that the UE has no subsequent uplink / downlink data transmission, or only one subsequent one For downlink data transmission, the SMF network element can quickly initiate the NAS connection release process after the data transmission is completed. If the NAS SM message of the UE in step S404 contains RAI and the RAI indicates that there is no subsequent uplink / downlink data transmission, the SMF network element in step S406 will send the data encapsulated by the UE in the NAS SM message to the UPF / NEF and pass the NAS The SM message returns the cause value and Control Plane data back-off timer time information to the UE, where the cause value indicates to the UE that the data transmission was successful.

In this embodiment, the UE indicates to the SMF network element that it supports the control plane data backoff timer capability through the NAS SM message. When the SMF network element is overloaded, the SMF network element indicates the control plane data backoff timer duration to the UE during the NAS message transmission process. The information causes the UE to start the control plane data backoff timer and not transmit data through the control plane before the control plane data backoff timer expires, which solves the problem of overloading SMF network elements in the prior art.

Example 4:

In this embodiment, the UE can indicate to the AMF network element that it supports the control plane data backoff timer capability during the registration process. When the AMF network element is overloaded, the AMF network element indicates the control plane data backoff timer to the UE during the registration process or through the NAS data transmission process. Duration information. Referring to FIG. 6, the specific steps include:

S501-S503: The registration process. The UE indicates to the AMF network element that it supports the Control Plane Data Back-off timer capability in the Registration Request message. For example, the UE may include the indication information in the UE 5GC Capability. If the AMF network element is overloaded, it will return the Control Plane data back-off timer information to the UE through the Registration and Accept message. After receiving the Control Plane data back-off timer information, the UE no longer sends data through the Control Plane.

Steps S504-S506 are the transmission process when the AMF network element is overloaded during the NAS message transmission data process:

S504: The UE encapsulates the data in a NAS SM message and sends it to the AMF network element;

S504: When the AMF network element is overloaded, the AMF network element discards the data transmitted by the UE, and returns the cause value and the Control Plane data back-off timer time information to the UE through the NASMM message, where the cause value indicates to the UE that the data was not successfully sent.

Further, in order to accelerate the release of the NAS connection and reduce the UE power message, the UE may include a RAI in the NAS MM message, which indicates that there is no subsequent uplink / downlink data transmission, or there is only one downstream data transmission in the future, and the SMF network element completes data transmission Can quickly initiate the NAS connection release process. If the NAS SM message sent by the UE in S504 contains RAI and the RAI indicates that there is no subsequent uplink / downlink data transmission, then the AMF network element in S505 will send the data encapsulated by the UE in the NAS SM message to the SMF network element and pass the NAS MM message Returns the cause value and the Control Plane data back-off timer time information to the UE, where the cause value indicates to the UE that the data transmission was successful.

In this embodiment, the UE indicates to the AMF network element that it supports the control plane data backoff timer capability during the registration process. When the AMF network element is overloaded, the AMF network element returns the control plane data backoff timing to the UE during the registration process or through the NAS data transmission process. A device, so that the UE starts the control plane data backoff timer and does not transmit data through the control plane before the control plane data backoff timer expires, which solves the problem of overloading AMF network elements in the prior art.

Based on the same inventive concept, referring to FIG. 7, an embodiment of the present invention further provides a congestion control device, including:

A memory 21 for storing computer instructions;

A communication interface 22, configured to send an instruction to support a control plane data backoff timer capability to an access and mobility management function network element or a session management function network element; receive the access and mobility management function network element or the session Control plane data backoff timer duration information indicated by the management function network element; the control plane data backoff timer is when the access and mobility management function network element or the session management function network element is overloaded, the access and mobility management A function network element or the session management function network element is set to the device;

The processor 23 is communicatively connected to the memory 21 and the communication interface 22, and is configured to execute computer instructions in the memory 21 to start the control plane data backoff timer when the computer instructions are executed, and The communication interface 22 is controlled not to transmit data through the control plane before the control plane data back-off timer expires.

Optionally, the communication interface 22 is specifically configured to:

Sending an instruction to support the control plane data backoff timer capability to the access and mobility management function network element through a non-access layer mobility management message; or,

Sending an indication of supporting the control plane data backoff timer capability to the session management function network element through a non-access layer session management message.

Optionally, the communication interface 22 is specifically configured to:

Receiving the control plane data backoff timer duration information indicated by the access and mobility management function network element through a non-access layer mobility management message; or,

Receiving the control plane data backoff timer duration information indicated by the session management function network element through a non-access layer session management message.

Optionally, the communication interface 22 is further configured to:

After sending an instruction to support the control plane data backoff timer capability to the access and mobility management function network element or the session management function network element, receive the access and mobility management function network element or the session management function network element. The cause value is used to indicate to the device whether the control plane data transmission transmitted by the device is successful or failed.

Optionally, the communication interface 22 is specifically configured to:

When the access and mobility management function network element or the session management function network element is overloaded, receiving the access and mobility management function network element or the session management function network element for instructing the device to transmit The cause value of the control plane sending failure; or,

Receiving the access and mobility management function network element when the access and mobility management function network element or the session management function network element is overloaded and the release assistance information provided by the device indicates that there is no subsequent uplink or downlink data transmission Or the cause value sent by the session management function network element to indicate that the control plane data transmitted by the device is successfully sent.

Optionally, the communication interface 22 is further configured to:

After sending an instruction to support the control plane data backoff timer capability to the access and mobility management function network element or the session management function network element, receive the access and mobility management function network element or the session management function network element. A protocol data unit session identifier, which is used to indicate to the device a protocol data unit session in a congested state.

Optionally, the processor 23 is specifically configured to:

Control the communication interface 22 not to transmit data through the control plane corresponding to the protocol data unit session before the control plane data back-off timer expires.

Based on the same inventive concept, referring to FIG. 8, an embodiment of the present invention further provides a congestion control device, including:

A memory 31 for storing computer instructions;

A communication interface 32, configured to communicate with the UE;

The processor 33 is communicatively connected to the memory 31 and the communication interface 32, and is configured to execute computer instructions in the memory 31 to control the communication interface 32 to perform the following operations when the computer instructions are executed:

Receiving an indication that the UE supports a control plane data backoff timer capability sent by the UE;

Sending control plane data backoff timer duration information to the UE, so that the UE starts the control plane data backoff timer and does not transmit data through the control plane before the control plane data backoff timer expires; The control plane data back-off timer is set by the device to the UE when the device or a session management function network element is overloaded.

Optionally, the communication interface 32 is specifically configured to:

Receiving an indication that the UE supports a control plane data backoff timer capability sent by the UE through a non-access layer mobility management message; or,

Receiving an indication that the UE supports a control plane data backoff timer capability sent by the UE through a non-access layer session management message.

Optionally, the communication interface 32 is specifically configured to:

Sending control plane data backoff timer duration information to the UE through a non-access layer mobility management message; or,

Sending control plane data backoff timer duration information to the UE through a non-access layer session management message.

Optionally, the communication interface 32 is further configured to:

Before sending control plane data backoff timer duration information to the UE, receive overload information sent by the session management function network element, where the overload information is used to indicate that the session management function network element is overloaded.

Optionally, the communication interface 32 is further configured to:

After receiving the indication that the UE supports the control plane data backoff timer capability sent by the UE, send a cause value to the UE, where the cause value is used to indicate to the UE that the control plane data transmitted by the UE is successfully sent Or failed.

Optionally, the communication interface 32 is specifically configured to:

When the device or the session management function network element is overloaded, sending to the UE a value indicating a reason for failure in sending control plane data transmitted by the UE; or,

When the device or the session management function network element is overloaded and the release assistance information provided by the UE indicates that there is no subsequent uplink or downlink data transmission, sending to the UE a reason for indicating that the control plane data transmitted by the UE was successfully sent value.

Optionally, the communication interface 32 is further configured to:

Before sending to the UE a reason value indicating that the control plane data transmitted by the UE is successfully sent, receive release assistance information sent by the UE; the release assistance information is used to indicate that there is no subsequent uplink or downlink data transmission.

Optionally, the communication interface 32 is further configured to:

After receiving the indication that the UE supports the control plane data backoff timer capability sent by the UE, send a protocol data unit session identifier to the UE, where the protocol data unit session identifier is used to indicate to the UE that the network is in a congested state. Protocol data unit session.

Optionally, the communication interface 32 is further configured to:

Before sending the protocol data unit session identifier to the UE, determine the protocol data unit session identifier associated with the session management function according to the overload information sent by the session management function network element.

Optionally, the communication interface 32 is further configured to:

After receiving an indication that the UE supports the control plane data backoff timer capability sent by the UE through a non-access layer mobility management message, indicate to the session management function network element that the UE supports the control plane data backoff timer capability .

Based on the same inventive concept, referring to FIG. 9, an embodiment of the present invention further provides a congestion control device, including:

A memory 41 for storing computer instructions;

A communication interface 42 for communicating with the UE;

The processor 43 is communicatively connected to the memory 41 and the communication interface 42 and is configured to execute computer instructions in the memory 41 to control the communication interface 42 to perform the following operations when the computer instructions are executed:

Sending control plane data backoff timer duration information to the UE, so that the UE starts the control plane data backoff timer and does not transmit data through the control plane before the control plane data backoff timer expires; When the control plane data backoff timer is overloaded on the communication interface 42, the communication interface 42 is set to the UE.

Optionally, the communication interface 42 is specifically configured to:

Receiving an indication that the UE supports a control plane data backoff timer capability included in a non-access stratum session management message sent by the UE; or,

Receiving an indication that the UE supports the control plane data backoff timer capability sent by the access and mobility management function network element, wherein the indication that the UE supports the control plane data backoff timer capability is performed by the UE through a non-access layer A mobility management message is sent to the access and mobility management function network element.

Optionally, the communication interface 42 is specifically configured to:

The communication interface 42 sends control plane data backoff timer duration information to the UE through a non-access stratum session management message.

Optionally, the communication interface 42 is further configured to:

After receiving the indication that the UE supports the control plane data backoff timer capability sent by the UE, the cause value is sent to the UE, and the cause value is used to indicate to the UE that data transmission is successful or failed.

Optionally, the communication interface 42 is specifically configured to:

When the device is overloaded, sending to the UE a value indicating a reason for failure in sending control plane data transmitted by the UE; or

When the device is overloaded and the release assistance information provided by the UE indicates that there is no subsequent uplink or downlink data transmission, sending a reason value to the UE to indicate that the control plane data transmitted by the UE is successfully transmitted.

Optionally, the communication interface 42 is further configured to:

Before sending to the UE a reason value indicating that the control plane data transmitted by the UE is successfully sent, receive release assistance information sent by the UE, where the release assistance information is used to indicate that there is no subsequent uplink or downlink data transmission.

Optionally, the communication interface 42 is further configured to:

Based on the same inventive concept, referring to FIG. 10, an embodiment of the present invention further provides a congestion control device, including:

A sending unit 51 is configured to send an instruction to support a control plane data backoff timer capability to an access and mobility management function network element or a session management function network element;

A receiving unit 52, configured to receive control plane data backoff timer duration information indicated by the access and mobility management function network element or the session management function network element; the control plane data backoff timer is access and mobility When the network element of the performance management function or the network element of the session management function is overloaded, the access and mobility management function network element or the session management function network element is set to the device;

The processing unit 53 is configured to start the control plane data backoff timer and not transmit data through the control plane before the control plane data backoff timer expires.

Based on the same inventive concept, referring to FIG. 11, an embodiment of the present invention further provides a congestion control device, including:

A receiving unit 61, configured to receive an indication that the UE supports a control plane data backoff timer capability sent by the UE;

A sending unit 62 is configured to send control plane data backoff timer duration information to the UE, so that the UE starts the control plane data backoff timer and does not pass the control plane before the control plane data backoff timer expires. The control plane transmits data; wherein the control plane data backoff timer is set by the device to the UE when the device or a session management function network element is overloaded.

Based on the same inventive concept, referring to FIG. 12, an embodiment of the present invention further provides a congestion control device, including:

The receiving unit 71 is configured to receive an indication that the UE supports a control plane data backoff timer capability sent by the UE;

A sending unit 72 is configured to send control plane data backoff timer duration information to the UE, so that the UE starts the control plane data backoff timer and does not pass the control plane before the control plane data backoff timer expires. The control plane transmits data; the control plane data backoff timer is set by the device to the UE when the device is overloaded.

Based on the same inventive concept, an embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium stores computer instructions, and when the computer instructions are run on a computer, the computer executes The method of one aspect, the second aspect, or the third aspect.

Those skilled in the art should understand that the embodiments of the present invention may be provided as a method, a system, or a computer program product. Therefore, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, and combinations of processes and / or blocks in the flowcharts and / or block diagrams can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing device to produce a machine, so that instructions generated by the processor of the computer or other programmable data processing device may be used to Means for implementing the functions specified in one or more flowcharts and / or one or more blocks of the block diagrams.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to work in a specific manner such that the instructions stored in the computer-readable memory produce a manufactured article including an instruction device, the instructions The device implements the functions specified in one or more flowcharts and / or one or more blocks of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of steps can be performed on the computer or other programmable device to produce a computer-implemented process, which can be executed on the computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more flowcharts and / or one or more blocks of the block diagrams.

Although the preferred embodiments of the present invention have been described, those skilled in the art can make other changes and modifications to these embodiments once they know the basic inventive concepts. Therefore, the appended claims are intended to be construed to include the preferred embodiments and all changes and modifications that fall within the scope of the invention.

Obviously, those skilled in the art can make various modifications and variations to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. In this way, if these modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these changes and modifications.

Claims

A congestion control method, comprising:

The user terminal UE sends an instruction to support the control plane data backoff timer capability to the access and mobility management function network element or the session management function network element;

Receiving, by the UE, control plane data backoff timer duration information indicated by the access and mobility management function network element or the session management function network element; the control plane data backoff timer is an access and mobility management function When the network element or the session management function network element is overloaded, the access and mobility management function network element or the session management function network element is set to the UE;

The UE starts the control plane data backoff timer, and does not transmit data through the control plane before the control plane data backoff timer expires.
The method according to claim 1, wherein the sending, by the UE to the access and mobility management function network element or the session management function network element, an indication of supporting a control plane data backoff timer capability specifically comprises:

Sending, by the UE, a control plane data backoff timer capability indication to the access and mobility management function network element through a non-access layer mobility management message; or,

The UE sends an indication of supporting the control plane data backoff timer capability to the session management function network element through a non-access layer session management message.
The method according to claim 1, wherein the UE receiving control plane data backoff timer duration information indicated by the access and mobility management function network element or the session management function network element specifically comprises:

Receiving, by the UE, a control plane data backoff timer duration information indicated by the access and mobility management function network element through a non-access layer mobility management message; or,

The UE receives the control plane data backoff timer duration information indicated by the session management function network element through a non-access layer session management message.
The method according to any one of claims 1 to 3, wherein after the UE sends an instruction to support the control plane data backoff timer capability to the access and mobility management function network element or the session management function network element, The method further includes:

Receiving, by the UE, a cause value sent by the access and mobility management function network element or the session management function network element, the cause value being used to indicate to the UE that the control plane data transmitted by the UE is successfully sent or failure.
The method according to claim 4, wherein the receiving, by the UE, a cause value sent by the access and mobility management function network element or the session management function network element specifically includes:

When the access and mobility management function network element or the session management function network element is overloaded, the UE receives the access and mobility management function network element or the session management function network element and sends the The control plane transmission failure value transmitted by the UE; or

When the access and mobility management function network element or the session management function network element is overloaded and the release assistance information provided by the UE indicates that there is no subsequent uplink or downlink data transmission, the UE receives the access and mobility management A cause value sent by the functional network element or the session management functional network element to indicate that the control plane data transmitted by the UE is successfully sent.
The method according to claim 1, wherein after the UE sends an instruction to support a control plane data backoff timer capability to an access and mobility management function network element or a session management function network element, the method further comprises :

Receiving, by the UE, a protocol data unit session identifier sent by the access and mobility management function network element or the session management function network element, where the protocol data unit session identifier is used to indicate to the UE a protocol in a congested state Data unit session.
The method according to claim 6, wherein the step of the UE not transmitting data through the control plane before the control plane data back-off timer expires specifically includes:

The UE does not transmit data through the control plane corresponding to the protocol data unit session before the control plane data backoff timer expires.
A congestion control method, comprising:

The access and mobility management function network element receives an indication that the UE supports the control plane data backoff timer capability sent by the UE;

The access and mobility management function network element sends control plane data backoff timer duration information to the UE, so that the UE starts the control plane data backoff timer, and sets the control plane data backoff timer on the control plane data backoff timer. Data is not transmitted through the control plane before timeout; wherein the control plane data back-off timer is the access and mobility management function when the access and mobility management function network element or the session management function network element is overloaded The network element is set to the UE.
The method according to claim 8, wherein the receiving and mobility management function network element receiving the indication that the UE supports the control plane data backoff timer capability sent by the UE specifically comprises:

The access and mobility management function network element receives, through a non-access layer mobility management message, an indication that the UE supports a control plane data backoff timer capability sent by the UE; or,

The access and mobility management function network element receives an indication that the UE supports the control plane data backoff timer capability sent by the UE through a non-access layer session management message.
The method according to claim 8, wherein the access and mobility management function network element sending control plane data backoff timer duration information to the UE specifically comprises:

The access and mobility management function network element sends control plane data backoff timer duration information to the UE through a non-access layer mobility management message; or,

The access and mobility management function network element sends control plane data backoff timer duration information to the UE through a non-access stratum session management message.
The method according to claim 10, wherein before the access and mobility management function network element sends control plane data backoff timer duration information to the UE, the method further comprises:

The access and mobility management function network element receives overload information sent by the session management function network element, and the overload information is used to indicate that the session management function network element is overloaded.
The method according to any one of claims 8-11, wherein after the access and mobility management function network element receives an indication that the UE supports a control plane data backoff timer capability sent by the UE, the The method also includes:

The access and mobility management function network element sends a cause value to the UE, where the cause value is used to indicate to the UE that the transmission of control plane data transmitted by the UE is successful or failed.
The method according to claim 12, wherein the sending, by the access and mobility management function network element, a reason value to the UE specifically comprises:

When the access and mobility management function network element or the session management function network element is overloaded, the access and mobility management function network element sends to the UE a message indicating that the transmission of control plane data transmitted by the UE fails. Cause value; or,

When the access and mobility management function network element or the session management function network element is overloaded and the release assistance information provided by the UE indicates that there is no subsequent uplink or downlink data transmission, the access and mobility management function network element The UE sends a cause value used to indicate that the control plane data transmitted by the UE is successfully sent.
The method according to claim 13, wherein before the access and mobility management function network element sends to the UE a reason value indicating that the control plane data transmitted by the UE is successfully sent, the method Also includes:

The access and mobility management function network element receives release assistance information sent by the UE; the release assistance information is used to indicate that there is no subsequent uplink or downlink data transmission.
The method according to any one of claims 8-11, wherein after the access and mobility management function network element receives an indication that the UE supports a control plane data backoff timer capability sent by the UE, the The method also includes:

The access and mobility management function network element sends a protocol data unit session identifier to the UE, and the protocol data unit session identifier is used to indicate to the UE that the protocol data unit session is in a congested state.
The method according to claim 15, wherein before the access and mobility management function network element sends a protocol data unit session identifier to the UE, the method further comprises:

The access and mobility management function network element determines the protocol data unit session identifier associated with the session management function according to the overload information sent by the session management function network element.
The method according to claim 9, characterized in that the access and mobility management function network element receives, through a non-access layer mobility management message, an indication that the UE supports a control plane data backoff timer capability sent by the UE After that, the method further includes:

The access and mobility management function network element indicates to the session management function network element that the UE supports a control plane data backoff timer capability.
A congestion control method, comprising:

The session management function network element receives an indication that the UE supports the control plane data backoff timer capability sent by the UE;

The session management function network element sends control plane data backoff timer duration information to the UE, so that the UE starts the control plane data backoff timer and does not pass before the control plane data backoff timer expires. The control plane transmits data; the control plane data backoff timer is set by the session management function network element to the UE when the session management function network element is overloaded.
The method according to claim 18, wherein the session management function network element receiving the indication that the UE supports the control plane data backoff timer capability sent by the UE specifically comprises:

Receiving, by the session management function network element, an indication that the UE supports a control plane data backoff timer capability included in a non-access stratum session management message sent by the UE; or,

The session management function network element receives an indication that the UE supports the control plane data backoff timer capability sent by the access and mobility management function network element, wherein the indication that the UE supports the control plane data backoff timer capability is determined by The UE sends the mobility management message to the access and mobility management network element through a non-access layer mobility management message.
The method according to claim 18, wherein the session management function network element sending control plane data backoff timer duration information to the UE specifically comprises:

The session management function network element sends control plane data backoff timer duration information to the UE through a non-access stratum session management message.
The method according to any one of claims 18 to 20, wherein after the session management function network element receives an indication that the UE supports a control plane data backoff timer capability sent by the UE, the method further comprises:

The session management function network element sends a cause value to the UE, where the cause value is used to indicate to the UE that data transmission is successful or failed.
The method according to claim 21, wherein the sending, by the session management function network element, the cause value to the UE specifically comprises:

When the session management function network element is overloaded, the session management function network element sends to the UE a value indicating a reason for failure in sending control plane data transmitted by the UE; or,

When the session management function network element is overloaded and release assistance information provided by the UE indicates that there is no subsequent uplink or downlink data transmission, the session management function network element sends a control plane to the UE to indicate the UE transmission Reason for successful data transmission.
The method according to claim 22, wherein before the session management function network element sends to the UE a reason value indicating that the control plane data transmitted by the UE is successfully sent, the method further comprises:

The session management function network element receives release assistance information sent by the UE, where the release assistance information is used to indicate that there is no subsequent uplink or downlink data transmission.
The method according to any one of claims 18 to 20, wherein after the session management function network element receives an indication that the UE supports a control plane data backoff timer capability sent by the UE, the method further comprises:

The session management function network element sends a protocol data unit session identifier to the UE, and the protocol data unit session identifier is used to indicate to the UE that the protocol data unit session is in a congested state.
A congestion control device, comprising:

Memory for storing computer instructions;

A communication interface configured to send an instruction to support a control plane data backoff timer capability to an access and mobility management function network element or a session management function network element; receive the access and mobility management function network element or the session management Duration information of the control plane data backoff timer indicated by the functional network element; when the control plane data backoff timer is an access and mobility management function network element or a session management function network element is overloaded, the access and mobility management function The network element or the session management function network element is set to the device;

A processor, which is communicatively connected to the memory and the communication interface, and is configured to execute a computer instruction in the memory, so as to execute the computer instruction, start the control plane data backoff timer and control the communication The interface does not transmit data through the control plane before the control plane data backoff timer expires.
The device according to claim 25, wherein the communication interface is specifically configured to:

Sending an instruction to support the control plane data backoff timer capability to the access and mobility management function network element through a non-access layer mobility management message; or,

Sending an indication of supporting the control plane data backoff timer capability to the session management function network element through a non-access layer session management message.
The device according to claim 25, wherein the communication interface is specifically configured to:

Receiving the control plane data backoff timer duration information indicated by the access and mobility management function network element through a non-access layer mobility management message; or,

Receiving the control plane data backoff timer duration information indicated by the session management function network element through a non-access layer session management message.
The device according to any one of claims 25-27, wherein the communication interface is further configured to:

After sending an instruction to support the control plane data backoff timer capability to the access and mobility management function network element or the session management function network element, receive the access and mobility management function network element or the session management function network element. The cause value is used to indicate to the device whether the control plane data transmission transmitted by the device is successful or failed.
The device according to claim 28, wherein the communication interface is specifically configured to:

When the access and mobility management function network element or the session management function network element is overloaded, receiving the access and mobility management function network element or the session management function network element for instructing the device to transmit The cause value of the control plane sending failure; or,

Receiving the access and mobility management function network element when the access and mobility management function network element or the session management function network element is overloaded and the release assistance information provided by the device indicates that there is no subsequent uplink or downlink data transmission Or the cause value sent by the session management function network element to indicate that the control plane data transmitted by the device is successfully sent.
The device according to claim 25, wherein the communication interface is further configured to:

After sending an instruction to support the control plane data backoff timer capability to the access and mobility management function network element or the session management function network element, receive the access and mobility management function network element or the session management function network element. A protocol data unit session identifier, which is used to indicate to the device a protocol data unit session in a congested state.
The device according to claim 30, wherein the processor is specifically configured to:

And controlling the communication interface not to transmit data through the control plane corresponding to the protocol data unit session before the control plane data backoff timer expires.
A congestion control device, comprising:

Memory for storing computer instructions;

Communication interface for communicating with UE;

A processor, which is communicatively connected to the memory and the communication interface, and is configured to execute computer instructions in the memory to control the communication interface to perform the following operations when the computer instructions are executed:

Receiving an indication that the UE supports a control plane data backoff timer capability sent by the UE;

Sending control plane data backoff timer duration information to the UE, so that the UE starts the control plane data backoff timer and does not transmit data through the control plane before the control plane data backoff timer expires; The control plane data back-off timer is set by the device to the UE when the device or a session management function network element is overloaded.
The device according to claim 32, wherein the communication interface is specifically configured to:

Receiving an indication that the UE supports a control plane data backoff timer capability sent by the UE through a non-access layer mobility management message; or,

Receiving an indication that the UE supports a control plane data backoff timer capability sent by the UE through a non-access layer session management message.
The device according to claim 32, wherein the communication interface is specifically configured to:

Sending control plane data backoff timer duration information to the UE through a non-access layer mobility management message; or,

Sending control plane data backoff timer duration information to the UE through a non-access layer session management message.
The device according to claim 34, wherein the communication interface is further configured to:

Before sending control plane data backoff timer duration information to the UE, receive overload information sent by the session management function network element, where the overload information is used to indicate that the session management function network element is overloaded.
The device according to any one of claims 32 to 35, wherein the communication interface is further configured to:

After receiving the indication that the UE supports the control plane data backoff timer capability sent by the UE, send a cause value to the UE, where the cause value is used to indicate to the UE that the control plane data transmitted by the UE is successfully sent Or failed.
The device according to claim 36, wherein the communication interface is specifically configured to:

When the device or the session management function network element is overloaded, sending to the UE a value indicating a reason for failure in sending control plane data transmitted by the UE; or,

When the device or the session management function network element is overloaded and the release assistance information provided by the UE indicates that there is no subsequent uplink or downlink data transmission, sending to the UE a reason for indicating that the control plane data transmitted by the UE was successfully sent value.
The device according to claim 37, wherein the communication interface is further configured to:

Before sending to the UE a reason value indicating that the control plane data transmitted by the UE is successfully sent, receive release assistance information sent by the UE; the release assistance information is used to indicate that there is no subsequent uplink or downlink data transmission.
The device according to any one of claims 32 to 35, wherein the communication interface is further configured to:

After receiving the indication that the UE supports the control plane data backoff timer capability sent by the UE, send a protocol data unit session identifier to the UE, where the protocol data unit session identifier is used to indicate to the UE that the network is in a congested state. Protocol data unit session.
The device according to claim 39, wherein the communication interface is further configured to:

Before sending the protocol data unit session identifier to the UE, determine the protocol data unit session identifier associated with the session management function according to the overload information sent by the session management function network element.
The device according to claim 33, wherein the communication interface is further configured to:

After receiving an indication that the UE supports the control plane data backoff timer capability sent by the UE through a non-access layer mobility management message, indicate to the session management function network element that the UE supports the control plane data backoff timer capability .
A congestion control device, comprising:

Memory for storing computer instructions;

Communication interface for communicating with UE;

A processor, which is communicatively connected to the memory and the communication interface, and is configured to execute computer instructions in the memory to control the communication interface to perform the following operations when the computer instructions are executed:

Receiving an indication that the UE supports a control plane data backoff timer capability sent by the UE;

Sending control plane data backoff timer duration information to the UE, so that the UE starts the control plane data backoff timer and does not transmit data through the control plane before the control plane data backoff timer expires; The control plane data back-off timer is set by the communication interface to the UE when the communication interface is overloaded.
The device according to claim 42, wherein the communication interface is specifically configured to:

Receiving an indication that the UE supports a control plane data backoff timer capability included in a non-access stratum session management message sent by the UE; or,

Receiving an indication that the UE supports the control plane data backoff timer capability sent by the access and mobility management function network element, wherein the indication that the UE supports the control plane data backoff timer capability is performed by the UE through a non-access layer A mobility management message is sent to the access and mobility management function network element.
The device according to claim 42, wherein the communication interface is specifically configured to:

The communication interface sends control plane data backoff timer duration information to the UE through a non-access layer session management message.
The device according to any one of claims 42-44, wherein the communication interface is further configured to:

After receiving the indication that the UE supports the control plane data backoff timer capability sent by the UE, a cause value is sent to the UE, and the cause value is used to indicate to the UE that data transmission succeeds or fails.
The device according to claim 45, wherein the communication interface is specifically configured to:

When the device is overloaded, sending to the UE a value indicating a reason for failure in sending control plane data transmitted by the UE; or

When the device is overloaded and the release assistance information provided by the UE indicates that there is no subsequent uplink or downlink data transmission, sending a reason value to the UE to indicate that the control plane data transmitted by the UE is successfully transmitted.
The device according to claim 46, wherein the communication interface is further configured to:

Before sending to the UE a reason value indicating that the control plane data transmitted by the UE is successfully sent, receive release assistance information sent by the UE, where the release assistance information is used to indicate that there is no subsequent uplink or downlink data transmission.
The device according to any one of claims 42-44, wherein the communication interface is further configured to:

After receiving the indication that the UE supports the control plane data backoff timer capability sent by the UE, send a protocol data unit session identifier to the UE, where the protocol data unit session identifier is used to indicate to the UE that the network is in a congested state. Protocol data unit session.
A congestion control device, comprising:

A sending unit, configured to send an instruction to support a control plane data backoff timer capability to an access and mobility management function network element or a session management function network element;

A receiving unit, configured to receive control plane data backoff timer duration information indicated by the access and mobility management function network element or the session management function network element; the control plane data backoff timer is access and mobility When the management function network element or the session management function network element is overloaded, the access and mobility management function network element or the session management function network element is set to the device;

A processing unit, configured to start the control plane data backoff timer and not transmit data through the control plane before the control plane data backoff timer expires.
A congestion control device, comprising:

A receiving unit, configured to receive an indication that the UE supports a control plane data backoff timer capability sent by the UE;

A sending unit, configured to send the control plane data backoff timer duration information to the UE, so that the UE starts the control plane data backoff timer and does not pass the control plane data backoff timer before the control plane data backoff timer expires The control plane transmits data; wherein the control plane data back-off timer is set by the device to the UE when the device or a session management function network element is overloaded.
A congestion control device, comprising:

A receiving unit, configured to receive an indication that the UE supports a control plane data backoff timer capability sent by the UE;

A sending unit, configured to send the control plane data backoff timer duration information to the UE, so that the UE starts the control plane data backoff timer and does not pass the control plane data backoff timer before the control plane data backoff timer expires The control plane transmits data; the control plane data backoff timer is set by the device to the UE when the device is overloaded.
A computer-readable storage medium, characterized in that the computer-readable storage medium stores computer instructions, and when the computer instructions are run on a computer, the computer causes the computer to execute the method according to any one of claims 1-24 Methods.