TWI749312B - Congestion control method, equipment and device - Google Patents

Abstract

The present invention provides a congestion control method, equipment and device, which are used to solve the problem of overloading of access control and mobility management function network elements or session management function network elements in the prior art. The method includes: 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 UE receives the access and mobility management function network element or the session management function The time information of the control plane data backoff timer indicated by the 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 function network element Or the session management function network element is set to the UE; the UE starts the control plane data back-off timer, and does not transmit data through the control plane before the control plane data back-off timer expires.

Description

Congestion control method, equipment and device

The invention belongs to the field of mobile communication technology, and particularly relates to a congestion control method, equipment and device.

In order to support the transmission of infrequent small data, the 3rd Generation Partnership Project (3GPP) in R16 is studying a control plane (Control Plane) transmission scheme, that is, through the non-access layer The (Non-access stratum, NAS) message transmits data between the UE and the network. The specific data transmission path is: the user terminal (User Equipment, UE) encapsulates the data in the Session Management (SM) message, The NAS 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, The SMF network element sends the data to the 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 interface, 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, which leads to overload of access control and mobility management function network elements or session management function network elements, and network transmission path congestion.

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

In the first aspect, an embodiment of the present invention provides a congestion control method, including: a 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 UE receives the access Access and mobility management function network element or control plane data back-off timer information indicated by the session management function network element; the control plane data back-off timer is the access and mobility management function network element or the session management function network element When 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 back-off timer, and does not stop before the control-plane data back-off timer expires Data is transmitted through this control surface.

In the above solution, the UE sends an instruction to support the control plane data backoff timer capability to the AMF network element or SMF network element SMF network element SMF network element, and if the AMF network element or SMF network element is overloaded, it returns to the control plane data backoff timer After receiving the control-plane data back-off timer, the UE starts the control-plane data back-off timer, and does not transmit data through the control plane before the control-plane data back-off timer expires, thus solving the existing problem. In the technology, the network element of access and mobility management function or the network element of session management function is overloaded.

Optionally, 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, which specifically includes: the UE sends a non-access layer mobility management message to the The access and mobility management function network element sends an instruction to support the control plane data backoff timer capability; or, the UE sends a non-access layer session management message to the session management function network element to support the control plane data backoff timer capability instruct.

In this embodiment, the UE can send 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 it can send a non-access layer session management message to the access and mobility management function network element. The session management function network element sends instructions to support the control plane data backoff timer capability, which improves the flexibility of the congestion control scheme.

Optionally, the UE receives 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, which specifically includes: the UE uses a non-access layer mobility management message Receive the control plane data back-off timer information indicated by the access and mobility management function network element; or, the UE receives the control plane data back-off timer indicated by the session management function network element through a non-access layer session management message Duration information.

In this embodiment, the UE can receive 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 it can receive the time information through a non-access layer session management message. The time information of the control plane data backoff timer indicated by the session management function network element improves the flexibility of the congestion control scheme.

Optionally, 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: the UE receives the access and mobility management The cause value sent by the functional network element or the session management function network element, and the cause value is used to indicate to the UE the success or failure of sending the control plane data transmitted by the UE.

In this embodiment, the access and mobility management function network element or the session management function network element can indicate to the UE the success or failure of the control plane data transmitted by the UE, which solves the network congestion problem while ensuring the control plane data Reliability of transmission.

Optionally, the UE receives the cause value sent by the access and mobility management function network element or the session management function network element, which 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 to indicate the cause value of the control plane transmission failure of the UE transmission; or, the access and mobility management function network element 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 UE receives the access and mobility management function network element or the session management function network element for sending The value indicating the reason why the control plane data transmitted by the UE was successfully sent.

In this embodiment, according to whether the UE provides release assistance information, it is determined whether to discard the control plane data transmitted by the UE, and the reason value used to indicate the failure of data transmission is sent to the UE after the control plane data transmitted by the UE is discarded. After the control plane data transmitted by the UE is successfully sent, the reason value used to indicate the success of the data transmission is sent to the UE, which not only solves the network congestion problem, but also ensures the reliability of the control plane data transmission.

Optionally, 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: the UE receives the access and mobility management The 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 UE the session of the protocol data unit in a congested state.

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

Optionally, the UE does not transmit data through the control plane before the control plane data back-off timer expires, which specifically includes: the UE does not pass the protocol data unit session corresponding to the session before the control plane data back-off timer expires The 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 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 receives an indication sent by a UE of the UE's ability to support a control plane data backoff timer; the access and mobility management function The network element sends the control plane data back-off timer duration information to the UE, so that the UE starts the control-plane data back-off timer, and does not transmit data through the control plane before the control-plane data back-off timer expires; wherein The control plane data backoff timer is set to the UE when the access and mobility management function network element or the session management function network element is overloaded.

In this embodiment, 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 a control plane data backoff timer to the UE, so that the UE is receiving the control plane data After the backoff timer, the control plane data backoff timer is started, and data is not transmitted through the control plane before the control plane data backoff timer expires, thus solving the problem of access and mobility management function network elements or sessions in the prior art The management function network element is overloaded.

Optionally, the access and mobility management function network element receives the indication sent by the UE that the UE supports the control plane data backoff timer capability, which specifically includes: the access and mobility management function network element passes the non-access layer mobility The management message receives the indication from the UE that the UE supports the control plane data backoff timer capability; or, the access and mobility management function network element receives the UE through the non-access layer session management message that the UE supports the control plane data backoff An indication of timer capabilities.

In this embodiment, the access and mobility management function network element can receive the indication sent by the UE to support the control plane data backoff timer capability of the UE through the non-access layer mobility management message, or through the non-access layer session management message Receiving the indication that the UE supports the control plane data backoff timer capability sent by the UE improves the flexibility of the congestion control scheme.

Optionally, the access and mobility management function network element sends the control plane data backoff timer duration information to the UE, which specifically includes: the access and mobility management function network element uses a non-access layer mobility management message Send control plane data back-off timer duration information to the UE; or, the access and mobility management function network element sends control plane data back-off 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 can send the control plane data backoff timer duration information to the UE through a non-access layer mobility management message, or it can send the UE through a non-access layer session management message. Sending control plane data backoff timer duration information 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 session management function network The overload information sent by the element, and the overload information is used to indicate that the session management function network element is overloaded.

In this embodiment, the access and mobility management function network element can determine that the session management function network element is overloaded through the overload information sent by the session management function network element, which improves the reliability of the congestion control solution.

Optionally, after the access and mobility management function network element receives the indication sent by the UE that the UE supports the control plane data backoff timer capability, the method further includes: the access and mobility management function network element reports to the UE Send reason value, which is used to indicate to the UE the success or failure of sending the control plane data transmitted by the UE.

In this embodiment, the access and mobility management function network element can indicate to the UE the success or failure of the control plane data transmitted by the UE, which solves the network congestion problem while ensuring the reliability of the control plane data transmission.

Optionally, the access and mobility management function network element sends a cause value to the UE, which specifically includes: 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 The functional network element sends to the UE a value indicating the reason for the failure of the transmission of the 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 the release assistance provided by the UE When the information 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 value indicating that the control plane data transmitted by the UE is successfully sent.

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 the release auxiliary information, and sends instructions to the UE after discarding the control plane data transmitted by the UE. The reason value for the failure of data transmission, the reason value sent to the UE after the control plane data transmitted by the UE is successfully sent to indicate the success of the data transmission, which solves the network congestion problem while ensuring the reliability of the control plane data transmission .

Optionally, before the access and mobility management function network element sends to the UE a reason value for indicating that the control plane data transmitted by the UE is successfully sent, the method further includes: the access and mobility management function network element Receive the release auxiliary information sent by the UE; the release auxiliary 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, so that when the access and mobility management function network element is overloaded, the access and mobility management function network element or the session management function network element is overloaded. Continue to send the control plane data received from the UE, and send to the UE the reason value used to indicate the successful transmission of the control plane data transmitted by the UE. While solving the network congestion problem, it ensures the control plane data transmission. reliability.

Optionally, after the access and mobility management function network element receives the indication sent by the UE that the UE supports the control plane data backoff timer capability, the method further includes: the access and mobility management function network element reports to the UE The session identifier of the agreement data unit is sent, and the session identifier of the agreement data unit is used to indicate to the UE that the session of the agreement data unit 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 the data unit session identifier used to indicate the congested protocol data unit session to the UE, so that the UE can clearly The protocol data unit session in a congested state improves the accuracy and reliability of congestion control.

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

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 congestion control.

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

In this embodiment, the access and mobility management function network element can forward the indication received from the UE that the UE supports the control plane data backoff timer capability to the session management function network element, so that the session management function network element is overloaded. The implementation of the corresponding congestion control scheme improves the reliability of congestion control.

In a third aspect, an embodiment of the present invention provides a congestion control method, including: a session management function network element receives an indication sent by a UE that the UE supports a control plane data backoff timer capability; the session management function network element sends a control plane to the UE Data back-off timer duration information, so that the UE starts the control-plane data back-off timer, and does not transmit data through the control plane before the control-plane data back-off timer expires; the control-plane data back-off timer is the When the session management function network element is overloaded, the session management function network element is set to the UE.

In this embodiment, when the session management function network element is overloaded, the session management function network element sends a control plane data back-off timer to the UE, so that the UE starts the control-plane data back-off timer after receiving the control-plane data back-off timer, and then Before the control plane data back-off timer expires, data is not transmitted through the control plane, thereby solving the problem of the session management function network element overload in the prior art.

Optionally, the session management function network element receives the indication sent by the UE that the UE supports the control plane data backoff timer capability, which specifically includes: the session management function network element receives the information contained in the non-access layer session management message sent by the UE The UE supports the indication of the control plane data backoff timer capability; or, the session management function network element receives the access and the mobility management function network element sends the indication that the UE supports the control plane data backoff timer capability, wherein the UE supports The indication of 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 can receive the indication that the UE supports the control plane data backoff timer capability through the non-access layer session management message, and can also receive the UE support control plane data from the access and mobility management function network element The indication of the backoff timer capability improves the flexibility of the congestion control scheme.

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

In this embodiment, the session management function network element sends the control plane data back-off timer information to the UE through a non-access layer session management message, so that the UE can start the control plane after receiving the control plane data back-off timer The data back-off timer is used, and data is not transmitted through the control plane before the control-plane data back-off timer expires, so as to solve the problem of the session management function network element overload in the prior art.

Optionally, after the session management function network element receives the indication from the UE that the UE supports the control plane data backoff timer capability, the method further includes: the session management function network element sends a cause value to the UE, and the cause value is To indicate the success or failure of data transmission to the UE.

In this embodiment, the session management function network element can indicate to the UE the success or failure of the control plane data transmitted by the UE. While solving the network congestion problem, the reliability of the control plane data transmission is ensured.

Optionally, the session management function network element sends a cause value to the UE, which specifically includes: when the session management function network element is overloaded, the session management function network element sends a control plane data transmission for instructing the UE to transmit to the UE The value of the reason for the failure; 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 to the UE a message indicating that the UE transmits The value of the reason why the control plane data was 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 the release auxiliary information, and after discarding the control plane data transmitted by the UE, it sends a message indicating that the data transmission failed to the UE. The reason value is the reason value sent to the UE after the control plane data transmitted by the UE is successfully sent to indicate the success of the data transmission. While solving the network congestion problem, it ensures the reliability of the control plane data transmission.

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 auxiliary information sent by the UE , The release auxiliary 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 the control plane data received from the UE, and sends to the UE to indicate the UE The value of the reason for the successful transmission of the transmitted control plane data, while solving the network congestion problem, ensures the reliability of the control plane data transmission.

Optionally, after the session management function network element receives the indication from the UE that the UE supports the control plane data backoff timer capability, the method further includes: the session management function network element sends the 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 session management function network element also provides the UE with a data unit session identifier used to indicate to the UE that the session of the protocol data unit is in a congested state, so that the UE can clearly be 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 the data back-off timer capability; receiving the access and mobility management function network element or the control-plane data back-off timer indicated by the session management function network element; the control-plane data back-off timer is the access and movement When the network element of the sexual management function or 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 processor communicates with the memory and the communication interface , Used to execute the computer command in the memory to start the control plane data back-off timer when the computer command is executed, and control the communication interface not to pass through the control plane before the control-plane data back-off timer expires Transfer data.

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

Optionally, the communication interface is specifically used to: receive the access and mobility management function network element indicating the control plane data backoff timer duration information through the non-access layer mobility management message; or, through the non-access layer mobility management message; The 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 also used 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, to receive the access and mobility management function network Or the reason value sent by the session management function network element, the reason value is used to indicate to the device the success or failure of sending the control plane data transmitted by the device.

Optionally, the communication interface is specifically used to: when the access and mobility management function network element or the session management function network element is overloaded, receive the information sent by the access and mobility management function network element or the session management function network element The value used to indicate the reason for the failure of the control plane transmission of the device; or, when the access and mobility management function network element or the session management function network element is overloaded and the release auxiliary information provided by the device indicates that there is no subsequent uplink or downlink data During transmission, receive the reason value sent by the access and mobility management function network element or the session management function network element for indicating the success of the transmission of the control plane data transmitted by the device.

Optionally, the communication interface is also used 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, to receive the access and mobility management function network The session identifier of the protocol data unit sent by the network element or the session management function network element, and the session identifier of the protocol data unit is used to indicate to the device the session of the protocol data unit 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 back-off timer expires.

In a fifth aspect, an embodiment of the present invention provides a congestion control device, including: a memory, used to store computer instructions; a communication interface, used to communicate with UE; a processor, communicatively connected to the memory and the communication interface, and The computer command in the memory is executed to control the communication interface to perform the following operations when the computer command is executed: receiving the instruction from the UE that the UE supports the control plane data backoff timer capability; sending the control plane data to the UE Back-off timer duration information, so that the UE starts the control-plane data back-off timer, and does not transmit data through the control plane before the control-plane data back-off timer expires; wherein, the control-plane data back-off timer is When the device or the session management function network element is overloaded, the device is set to the UE.

Optionally, the communication interface is specifically used to: 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, receive the instruction through a non-access layer session management message. The indication sent by the UE that the UE supports the control plane data backoff timer capability.

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

Optionally, the communication interface is further used for: before sending control plane data backoff timer duration information to the UE, receiving overload information sent by the session management function network element, and the overload information is used to instruct the session management function network element overload.

Optionally, the communication interface is further configured to: after receiving an indication from the UE that the UE supports the control plane data backoff timer capability, send a cause value to the UE, and the cause value is used to indicate to the UE that the UE transmits The control plane data was sent successfully or failed.

Optionally, the communication interface is specifically used to: when the device or the session management function network element is overloaded, send to the UE a reason value used to indicate the failure of sending the control plane data transmitted by the UE; or, the device or the session management function When the 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 reason value used to indicate the successful transmission of the control plane data transmitted by the UE is sent to the UE.

Optionally, the communication interface is further used to: before sending to the UE a reason value indicating that the control plane data transmitted by the UE is successfully sent, receive the release auxiliary information sent by the UE; the release auxiliary information is used to indicate that there is no subsequent Upstream or downstream data transmission.

Optionally, the communication interface is further configured to: after receiving an indication from the UE that the UE supports the control plane data backoff timer capability, send a protocol data unit session identifier to the UE, and the protocol data unit session identifier is used to send the protocol data unit session identifier to the UE. The UE indicates the session of the agreement data unit in a congested state.

Optionally, 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.

Optionally, 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, instruct the session management function network element that the UE supports Control surface data back-off timer capability.

In a sixth aspect, an embodiment of the present invention provides a congestion control device, including: a memory, used to store computer instructions; a communication interface, used to communicate with the UE; a processor, communicatively connected to the memory and the communication interface, and The computer command in the memory is executed to control the communication interface to perform the following operations when the computer command is executed: receiving the instruction from the UE that the UE supports the control plane data backoff timer capability; sending the control plane data to the UE Back-off timer duration information, so that the UE starts the control-plane data back-off timer, and does not transmit data through the control plane before the control-plane data back-off timer expires; the control-plane data back-off timer is the communication When the interface is overloaded, the communication interface is set to the UE.

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

Optionally, the communication interface is specifically used for: the communication interface sends the 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 from the UE that the UE supports the control plane data backoff timer capability, send a cause value to the UE, and the cause value is used to indicate to the UE that the data transmission is successful or Fail.

Optionally, the communication interface is specifically used to: when the device is overloaded, send to the UE a reason value indicating that the control plane data transmitted by the UE failed to send; or, when the device is overloaded and the release assistance information provided by the UE When indicating that there is no subsequent uplink or downlink data transmission, send to the UE the reason value used to indicate the successful transmission of the control plane data transmitted by 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 sent, receive the release auxiliary information sent by the UE, and the release auxiliary information is used to indicate that there is no subsequent release. Upstream or downstream data transmission.

Optionally, the communication interface is further configured to: after receiving an indication from the UE that the UE supports the control plane data backoff timer capability, send a protocol data unit session identifier to the UE, and the protocol data unit session identifier is used to send the protocol data unit session identifier to the UE. The UE indicates the session of the agreement data unit in a congested state.

In a seventh aspect, an embodiment of the present invention provides a congestion control device, including: a sending unit, configured to send an instruction to support the control plane data backoff timer capability to an access and mobility management function network element or a session management function network element; Unit for receiving the control plane data back-off timer duration information indicated by the access and mobility management function network element or the session management function network element; the control plane data back-off timer is the access and mobility management function network When the element or 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;

The processing unit is used to start the control plane data back-off timer, and do not transmit data through the control plane before the control plane data back-off timer expires.

In an eighth aspect, an embodiment of the present invention provides a congestion control device, including: a receiving unit, configured to receive an indication from a UE that the UE supports the control plane data backoff timer capability; a sending unit, configured to send control plane data to the UE Back-off timer duration information, so that the UE starts the control-plane data back-off timer, and does not transmit data through the control plane before the control-plane data back-off timer expires; wherein, the control-plane data back-off timer is When the device or the session management function network element is overloaded, the device is set to the UE.

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

In a tenth aspect, an embodiment of the present invention provides a computer-readable storage medium that stores computer instructions. When the computer instructions are run on the computer, the computer executes the first and second aspects of the embodiments of the present invention. Aspect or the method of 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 If the AMF network element or SMF network element is overloaded, the control plane data back-off timer is returned to the UE, and the UE starts the control-plane data back-off timer after receiving the control-plane data back-off timer, and backs off the control-plane data Before the timer expires, data is not transmitted through the control plane, which solves the problem of overloading of AMF network elements or SMF network elements in the prior art.

S0~S12, S101~S103, S201~S204, S301~S310, S401~S407, S501~S506‧‧‧Step

21, 31, 41‧‧‧Memory

22, 32, 42‧‧‧Communication interface

23, 33, 43‧‧‧Processor

51, 62, 72‧‧‧Sending unit

52, 61, 71‧‧‧Receiving unit

53‧‧‧Processing unit

In order to explain the technical solutions in the embodiments of the present invention more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. Those of ordinary skill in the art can obtain other drawings based on these drawings without paying progressive labor.

Figure 1 is a schematic flow diagram of the Control Plane transmission method; Figure 2 is a schematic flow diagram of the congestion control method in an embodiment of the present invention; Figure 3 is a schematic flow diagram of the congestion control method in an embodiment of the present invention; Figure 4 is a congestion control method in an embodiment of the present invention Fig. 5 is a schematic flowchart of a congestion control method in an embodiment of the present invention; Fig. 6 is a schematic flowchart of a congestion control method in an embodiment of the present invention; Fig. 7 is a schematic structural diagram of a congestion control device in an embodiment of the present invention Figure 8 is a schematic structural diagram of a congestion control device in an embodiment of the present invention; Figure 9 is a schematic structural diagram of a congestion control device in an embodiment of the present invention; Figure 10 is a schematic structural diagram of a congestion control device in an embodiment of the present invention; A schematic structural diagram of a congestion control apparatus in an embodiment of the present invention; FIG. 12 is a schematic structural diagram of a congestion control apparatus in an embodiment of the present invention.

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 described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making progressive labor 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 of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, and broadband code division multiple access. (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, User Equipment (UE) includes, but is not limited to, a mobile station (Mobile Station, MS), a mobile terminal (Mobile Terminal), a mobile telephone, 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 It is called a "cellular" phone), a computer with wireless communication function, etc. The user equipment can also be a portable, pocket-sized, palm-sized, built-in computer or a mobile device in a vehicle.

In the embodiment of the present invention, a base station (for example, an access point) may refer to a device that communicates with a wireless terminal through one or more magnetic zones on the air interface in the access network. The base station can be used to convert the received air frame and IP packets to each other, 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, a base station (NodeB) in TD-SCDMA or WCDMA, or an evolved base station (eNodeB or LTE). eNB or e-NodeB, evolutional Node B), or base station (gNB) in 5G NR, the present invention is not limited.

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

The user terminal UE involved in the embodiment of the present invention may be a device that provides voice and/or data connectivity to the user, a palm-type device with a wireless connection function, or other processing devices 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 "cellular" phone) and The computer of the mobile terminal, for example, may be a portable, pocket-sized, palm-sized, built-in computer or vehicle-mounted mobile device, which exchanges language and/or data with the wireless access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital assistants (Personal Digital Assistant, PDA) and other equipment . Wireless user terminal can also be called system, subscriber unit (Subscriber Unit), subscriber station (Subscriber Station), mobile station (Mobile Station), mobile station (Mobile), remote station (Remote Station), access point (Access Point), Remote Terminal, Access Terminal, User Terminal, User Agent, User Device.

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

It should be understood that in the description of the embodiments of the present invention, words such as "first" and "second" are only used for the purpose of distinguishing description, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating Or imply the order. In the description of the embodiments of the present invention, "multiple" refers to two or more.

The term "and/or" in the embodiment of the present invention is only an association relationship describing related objects, indicating that there can be three types of relationships, for example, A and/or B, which can mean that A exists alone, and A and B exist at the same time. There are three cases of B alone. In addition, the character "/" in this article generally means that the related objects before and after are in an "or" relationship.

In order to facilitate the understanding of the technical solutions of the embodiments of the present invention, the Control Plane transmission process will be introduced first. Referring to Figure 1, the Control Plane transmission process mainly includes the following steps: S0: UE is in an idle state; S1: UE establishes a radio resource control (Radio Resource Control, RRC) connection, and sends a NAS protocol data unit (Protocol Data Unit, via RRC message). PDU). Among them, the NAS PDU contains Session Management (SM) data transfer (data transfer) messages and PDU Session ID (PDU Session ID), and the SM data transfer message contains the data that the UE needs to transmit; S2: RAN network element will NAS PDU is sent to AMF network element; S3: AMF network element performs integrity protection verification and decrypts data; S4: AMF network element sends SM data transfer message and PDU Session ID to SMF network element; S5: SMF network element requires UE The transmitted data is forwarded 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 : AMF network element performs data encryption and integrity protection, and sends SM data transfer message and PDU Session ID to UE through NAS message; S9: AMF network element sends NAS message to RAN; S10: RAN network element sends NAS through RRC message The message is sent to the UE; S11: the RAN network element does not detect further activity; S12: the RAN network element determines that the data transmission is complete, and initiates the RCC connection release process.

The embodiments of the present invention provide a congestion control method, equipment, and device, which are used to solve the problem of overloading of AMF network elements or SMF network elements in the prior art. Among them, the method, device, and equipment described in the present invention are based on the same inventive concept. Since the principles of the method, device, and device to solve the problem are similar, the implementation of the method, device, and equipment can be referred to each other, and the repetition will not be repeated.

2, the congestion control method provided by the 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 passes through the non-access layer The mobility management message sends to the AMF network element an instruction to support the control plane data back-off timer (Control Plane data back-off timer) capability; or, the UE sends a support control to the SMF network element through a non-access layer session management message An indication of the ability of the face data to back off the timer.

Correspondingly, when the UE sends an instruction to support the control plane data backoff timer capability to the AMF network element, the AMF network element receives the UE supporting control plane data backoff timer sent by the UE through a non-access layer mobility management message Capability indication, or receiving 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.

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

S102: The UE receives the control plane data backoff timer information indicated by the AMF network element or the SMF network element; where the control plane data backoff timer is when the AMF network element or the SMF network element is overloaded, the AMF network element Or the SMF network element is set to the UE.

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

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

In the 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 a protocol data unit session in a congested state. Correspondingly, when the AMF network element or the SMF network element returns to the control plane data backoff timer, it can 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 (cause) at the same time to indicate the success or failure of the control plane data transmitted by the UE. .

Specifically, in order to speed up the release of the NAS connection and reduce the UE battery information, when the UE transmits control plane data, it can also provide Release Assistance Information (RAI) to indicate that there is no subsequent uplink/downlink data transmission, or there is only one subsequent data 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 auxiliary 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 Exposure Function (Network Exposure Function, NEF), and return the cause value to the UE to indicate that the data is sent successfully; if the SMF network element does not receive the release auxiliary information, it discards the control plane data transmitted by the UE and sends the control plane data to indicate the UE transmission to the UE. The value of the reason for the failure. Among them, 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 returns a cause value indication to the UE Data transmission is 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 to the UE a message indicating that the control plane data transmitted by the UE failed to be sent Reason value.

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

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

In the above solution, the UE sends an instruction to support the control plane data backoff timer capability to the AMF network element or SMF network element. If the AMF network element or SMF network element is overloaded, the control plane data backoff timer is returned to the UE. The UE starts the control-plane data back-off timer after receiving the control-plane data back-off timer, and does not transmit data through the control plane before the control-plane data back-off timer expires, thus solving the problem of AMF network element or SMF network element overload problem.

In the following, several specific and complete embodiments are used to introduce the congestion control method of the present invention. The following embodiments mainly introduce the possible implementation process of the congestion control method. It should be noted that the embodiments of the present invention are only used to explain the present invention, but cannot be used to limit the present invention. All 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 make modifications based on the idea of the present invention.

Example 1:

In this embodiment, the UE instructs the AMF network element to support 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. 3, the specific implementation steps include: S201: The UE indicates to the AMF network element its ability to support the control plane data backoff timer in a registration request (Registration Request) message. For example, the UE may include the indication information (Information Element, IE) in the terminal 5G Core Capability (UE 5G Core Capability) information element; S202: AMF network elements, SMF network elements, etc. are performed according to the process defined in TS 23.502 Registration procedure, such as obtaining UE's subscription information from Unified Data Management (UDM) network elements; S203: AMF network element receives SMF network element overload information from SMF network element through N11 message ; Determine the PDU Session ID associated with the SMF network element through the SMF network element overload information, that is, the PDU Session established by the SMF network element; S204: The AMF network element provides Control to the UE in the Registration Accept (Registration Accept) Plane data back-off timer duration information and the corresponding PDU Session ID. After the UE receives the time information of the Control Plane data back-off timer, it no longer sends data through the control plane before the Control Plane data back-off timer expires.

In this embodiment, the UE instructs the AMF network element to support the control plane data backoff timer capability during the registration process. When the SMF network element is overloaded, the AMF network element indicates to the UE the control plane data backoff timer duration information during the registration process. , The UE starts the control plane data back-off timer and does not transmit data through the control plane before the control plane data back-off timer expires, which solves the problem of SMF network element overload in the prior art.

Example 2:

In this embodiment, the UE instructs the AMF network element to support the control plane data backoff timer capability during the registration process. When the SMF network element is overloaded, the SMF network element indicates to the UE the control plane data backoff timer duration information during the NAS message transmission process. Referring to Figure 4, the specific steps include: S301-S303: Registration process of the UE. The UE indicates to the AMF network element that it supports the 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: PDU session During the establishment process, the AMF network element indicates to the SMF network element that the UE supports the Control Plane data back-off timer through the N11 message; S307-S310: the process for the UE to transmit data through the NAS message: 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 to the UE through the NAS SM message And Control Plane data back-off timer time information, where the cause value indicates to the UE that the data has not been sent successfully; S310: The AMF network element returns the cause value and Control Plane data back-off timer time information to the UE. After the UE receives the time information of the Control Plane data back-off timer, it no longer sends data through the control plane before the Control Plane data back-off timer expires.

Further, in order to speed up the release of the NAS connection and reduce the UE battery 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 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 Control Plane data back-off timer time information to the UE through a NAS SM message, where the cause value indicates to the UE that the data is sent successfully.

In this embodiment, the UE instructs the AMF network element to support the control plane data backoff timer capability during the registration process. When the SMF network element is overloaded, the SMF network element indicates to the UE the control plane data backoff timer duration during the NAS message transmission process. Information enables the UE 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 SMF network element overload in the prior art.

Example 3:

This embodiment is similar to Embodiment 2, except that the UE indicates to the SMF network element through a NAS SM message that it supports the control plane data backoff timer capability. Referring to Figure 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 the Control Plane data back-off timer capability through a PDU Session Establishment Request (PDU Session Establishment Request) message. The SM message is sent by the AMF network element to the SMF network element.

S404-S407 are the same as steps S307-S310 in Embodiment 2. It is the process of UE transmitting data through NAS message: S404: UE encapsulates the data in a NAS SM message and sends it to the AMF network element; S405: AMF network element sends the data to the AMF network element through N11 message The NAS SM message containing the data is sent to the SMF network element; S406: When the SMF network element is overloaded, the SMF network element discards the data, and returns the cause value and Control Plane data back-off timer information to the UE through the NAS SM message, where cause The value indicates to the UE that the data has not been sent successfully; S407: The AMF network element returns the cause value and Control Plane data back-off timer time information to the UE. After receiving the back-off timer duration information, the UE no longer sends data through the control plane before the back-off timer expires.

Further, in order to speed up the release of the NAS connection and reduce the UE battery 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 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, then in step S406, the SMF network element 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 duration information to the UE, where the cause value indicates to the UE that the data is sent successfully.

In this embodiment, the UE indicates to the SMF network element its ability to support the control plane data backoff timer through a NAS SM message. When the SMF network element is overloaded, the SMF network element indicates to the UE the control plane data backoff timer during the transmission of the NAS message. Long information enables the UE 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 SMF network element overload in the prior art.

Example 4:

In this embodiment, the UE can indicate to the AMF network element its ability to support the control plane data backoff timer during the registration process. When the AMF network element is overloaded, the AMF network element may indicate the control plane data backoff timer to the UE during the registration process or through the NAS data transmission process. Duration information. Referring to Figure 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 through 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 duration information to the UE through the Registration Accept message. After the UE receives the time information of the Control Plane data back-off timer, it 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: S504: UE encapsulates the data in a NAS SM message and sends it to the AMF network element; S505: AMF sends N11 message to SMF; S506: When the AMF network element is overloaded, the AMF network element discards the data transmitted by the UE, and returns the cause value and Control Plane data back-off timer information to the UE through a NAS MM message, where the cause value indicates to the UE that the data has not been sent successfully.

Further, in order to speed up the release of the NAS connection and reduce the UE battery information, the UE can include the RAI in the NAS MM message, which indicates that there is no subsequent uplink/downlink data transmission, or only one subsequent downlink data transmission, and the SMF network element completes the data transmission. After that, the NAS connection release process can be initiated quickly. 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 The cause value and Control Plane data back-off timer information are returned to the UE, where the cause value indicates to the UE that the data is sent successfully.

In this embodiment, the UE instructs the AMF network element to support the control plane data backoff timer during the registration process. When the AMF network element is overloaded, the AMF network element returns the control plane data backoff timer to the UE during the registration process or through the NAS data transmission process. The UE starts the control plane data back-off timer and does not transmit data through the control plane before the control plane data back-off timer expires, which solves the problem of AMF network element overload in the prior art.

Based on the same inventive concept, referring to Figure 7, an embodiment of the present invention also provides a congestion control device, including: a memory 21 for storing computer instructions; a communication interface 22 for accessing and mobility management function network elements or sessions The management function network element sends an instruction to support the control plane data backoff timer capability; receives 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; the control plane data The back-off timer is set to the device when the access and mobility management function network element or the session management function network element is overloaded; the processor 23, and The memory 21 and the communication interface 22 are in communication connection for executing computer commands in the memory 21, so that when the computer commands are executed, the control plane data back-off timer is started, and the communication interface 22 is controlled in the control Do not transmit data through the control plane before the data back-off timer expires.

Optionally, the communication interface 22 is specifically configured to: send 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, through a non-access layer mobility management message; The layer session management message sends an instruction to support the control plane data backoff timer capability to the session management function network element.

Optionally, the communication interface 22 is specifically used to: receive the access and the control plane data backoff timer information indicated by the mobility management function network element through a non-access layer mobility management message; or, through a non-access layer mobility management message; 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 22 is also used 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, to receive the access and mobility management function The reason value sent by the network element or the session management function network element, and the reason value is used to indicate to the device the success or failure of sending the control plane data transmitted by the device.

Optionally, the communication interface 22 is specifically used to: when the access and mobility management function network element or the session management function network element is overloaded, receive the access and mobility management function network element or the session management function network element to send The value used to indicate the reason for the 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 auxiliary information provided by the device indicates that there is no subsequent uplink or downlink During data transmission, receive the reason value sent by the access and mobility management function network element or the session management function network element for indicating the successful transmission of the control plane data transmitted by the device.

Optionally, the communication interface 22 is also used 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, to receive the access and mobility management function The protocol data unit session identifier sent by the network element or the session management function network element, and the protocol data unit session identifier is used to indicate to the device the 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 also provides a congestion control device, including: a memory 31 for storing computer instructions; a communication interface 32 for communicating with the UE; a processor 33 for communicating with the memory The body 31 and the communication interface 32 are in communication connection for executing computer instructions in the memory 31 to control the communication interface 32 to perform the following operations when the computer instructions are executed: receiving the UE's control plane data backoff from the UE Timer capability indication; send the control plane data back-off timer duration information to the UE so that the UE starts the control-plane data back-off timer, and does not pass the control plane before the control-plane data back-off timer expires Transmission data; wherein, the control plane data back-off timer is set to the UE when the device or the session management function network element is overloaded.

Optionally, the communication interface 32 is specifically configured to: 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, receive through a non-access layer session management message An indication sent by the UE that the UE supports the control plane data backoff timer capability.

Optionally, the communication interface 32 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 control to the UE through a non-access layer session management message Face data backoff timer duration information.

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, and the overload information is used to instruct the session management function network Meta overload.

Optionally, the communication interface 32 is further configured to: after receiving an indication from the UE that the UE supports the control plane data backoff timer capability, send a cause value to the UE, and the cause value is used to indicate to the UE that the UE transmits The control surface data of the sender succeeded or failed.

Optionally, the communication interface 32 is specifically used to: when the device or the session management function network element is overloaded, send to the UE a reason value used to indicate the failure of sending the control plane data transmitted by the UE; or, the device or session management When the functional 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 reason value used to indicate the successful transmission of the control plane data transmitted by the UE is sent to the UE.

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 the release auxiliary information sent by the UE; the release auxiliary information is used to indicate subsequent There is no upstream or downstream data transmission.

Optionally, the communication interface 32 is further configured to: after receiving an indication from the UE that the UE supports the control plane data backoff timer capability, send a protocol data unit session identifier to the UE, and the protocol data unit session identifier is used to The UE indicates the session of the agreement data unit in a congested state.

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, instruct the UE to the session management function network element Support control surface data back-off timer capability.

Based on the same inventive concept and referring to FIG. 9, an embodiment of the present invention also provides a congestion control device, including: a memory 41 for storing computer instructions; a communication interface 42 for communicating with the UE; and a processor 43 with the memory The body 41 and the communication interface 42 are in communication connection, and are used to execute computer commands in the memory 41 to control the communication interface 42 to perform the following operations when the computer commands are executed: receiving the UE from the UE to support control plane data backoff Timer capability indication; send the control plane data back-off timer duration information to the UE so that the UE starts the control-plane data back-off timer, and does not pass the control plane before the control-plane data back-off timer expires Transmission data; the control plane data back-off timer is set to the UE when the communication interface 42 is overloaded.

Optionally, the communication interface 42 is specifically configured to: receive an indication contained in a non-access layer session management message sent by the UE that the UE supports the control plane data backoff timer capability; or, receive access and mobility management functions The indication sent by the network element that the UE supports the control plane data backoff timer capability, wherein the UE supports the control plane data backoff timer capability instruction sent by the UE to the access and mobile via a non-access layer mobility management message Network element of sexual management function.

Optionally, the communication interface 42 is specifically configured to send the control plane data backoff timer duration information to the UE through a non-access layer session management message.

Optionally, the communication interface 42 is further configured to: after receiving an indication from the UE that the UE supports the control plane data backoff timer capability, send a cause value to the UE, and the cause value is used to indicate to the UE that the data transmission is successful Or fail.

Optionally, the communication interface 42 is specifically used to: when the device is overloaded, send to the UE a reason value for indicating the failure of sending control plane data transmitted by the UE; or, when the device is overloaded and the release assistance provided by the UE When the information indicates that there is no subsequent uplink or downlink data transmission, a reason value used to indicate the success of the control plane data transmission of the UE is sent to the UE.

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 the release auxiliary information sent by the UE, and the release auxiliary information is used to indicate subsequent There is no upstream or downstream data transmission.

Optionally, the communication interface 42 is further configured to: after receiving an indication from the UE that the UE supports the control plane data backoff timer capability, send a protocol data unit session identifier to the UE, and the protocol data unit session identifier is used to send a protocol data unit session identifier to the UE. The UE indicates the session of the agreement data unit in a congested state.

Based on the same inventive concept and referring to FIG. 10, an embodiment of the present invention also provides a congestion control device, including: a sending unit 51, configured to send a control plane data backoff support to a network element with an access and mobility management function or a network element with a session management function Timer capability indication; the receiving unit 52 is used to receive 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; 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 function network element or the session management function network element is set to the device; the processing unit 53 is used to start the control Data back-off timer, and do not transmit data through the control plane before the control-plane data back-off timer expires.

Based on the same inventive concept and referring to FIG. 11, an embodiment of the present invention also provides a congestion control device, including: a receiving unit 61, configured to receive an indication sent by the UE that the UE supports the control plane data backoff timer capability; a sending unit 62 uses Sending the control plane data back-off timer information to the UE, so that the UE starts the control-plane data back-off timer, and does not transmit data through the control plane before the control-plane data back-off timer expires; wherein, The control plane data back-off timer is set by the device to the UE when the device or the session management function network element is overloaded.

Based on the same inventive concept and referring to FIG. 12, an embodiment of the present invention also provides a congestion control device, including: a receiving unit 71, configured to receive an indication from the UE that the UE supports the control plane data backoff timer capability; and the sending unit 72 uses Sending the control plane data back-off timer duration information to the UE, so that the UE starts the control-plane data back-off timer, and does not transmit data through the control plane before the control-plane data back-off timer expires; the control The face data backoff timer is set by the device to the UE when the device is overloaded.

Based on the same inventive concept, embodiments of the present invention also provide a computer-readable storage medium that stores computer instructions. When the computer instructions run on the computer, the computer executes the first aspect of the embodiments of the present invention, The method described in the second or third aspect.

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

The present invention is described with reference to flowcharts and/or block diagrams of methods, equipment (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and/or block in the flowchart and/or block diagram, and the combination of processes and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions can be provided to the processors of general-purpose computers, dedicated computers, embedded processors, or other programmable data processing equipment to generate a machine that can be executed by the processors of the computer or other programmable data processing equipment A device for realizing the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram is generated.

These computer program instructions can also be stored in a computer readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer readable memory produce a manufactured product including the instruction device , The instruction device realizes the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so that the computer or other programmable equipment The instructions executed above provide steps for implementing functions specified in a flow or multiple flows in the flowchart and/or a block or multiple blocks in the block diagram.

Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications to these embodiments once they learn the basic progressive concepts. Therefore, the scope of the attached patent application is intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

Obviously, those skilled in the art can make various changes and modifications 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 patent application of the present invention and the scope of equivalent technologies, the present invention is also intended to include these modifications and variations.

S101~S103‧‧‧Step

Claims (30)

A congestion control method, which is characterized by comprising: a user terminal UE sends an instruction to support the control plane data backoff timer capability to an access and mobility management function network element or a session management function network element; the UE receives the access and mobility management function network element or session management function network element; Mobility management function network element or control plane data back-off timer information indicated by the session management function network element; the control plane data back-off 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 function network element or the session management function network element is set to the UE; the UE starts the control plane data back-off timer, and does not pass the control plane data back-off timer before the control plane data back-off timer expires. The control plane transmits data. The congestion control method according to claim 1, wherein 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, which specifically includes: The access layer mobility management message sends an instruction to support the control plane data backoff timer capability to the access and mobility management function network element; or, the UE sends a non-access layer session management message to the session management function network element Support the instructions of the control surface data back-off timer capability. The congestion control method according to claim 1, wherein the UE receiving the control plane data backoff timer information indicated by the access and mobility management function network element or the session management function network element specifically includes: the UE Receive the control plane data backoff timer information indicated by the access and mobility management function network element through a non-access layer mobility management message; or, the UE receives the session management function network through a non-access layer session management message Time length information of the control plane data backoff timer indicated by the meta. The congestion control 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: the UE receives a cause value sent by the access and mobility management function network element or the session management function network element, and the reason value is used to indicate to the UE the success or failure of the control plane data transmitted by the UE. . The congestion control method according to claim 4, wherein the UE receives the cause value sent by the access and mobility management function network element or the session management function network element, which specifically includes: the access and mobility management function network element When the 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 to indicate the cause value of the control plane transmission failure of the UE transmission; or, the When the access and mobility management function network element or the session management function network element is overloaded and the release auxiliary 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 element or the The reason value sent by the session management function network element to indicate that the control plane data transmitted by the UE is successfully sent. The congestion control method according to claim 1, 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: The UE receives the 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 data unit session in a congested state. The congestion control method according to claim 6, wherein the UE does not transmit data through the control plane before the control plane data backoff timer expires, specifically including: the UE does not transmit data through the control plane before the control plane data backoff timer expires The data is transmitted through the control plane corresponding to the session of the protocol data unit. A congestion control method, characterized in that it includes: an access and mobility management function network element receives an indication sent by a UE of the UE’s ability to support a control plane data backoff timer; the access and mobility management function network element reports to the UE Send the control plane data back-off timer duration information so that the UE starts the control-plane data back-off timer, and does not transmit data through the control plane before the control-plane data back-off timer expires; wherein, the control plane data The backoff timer is set to the UE when the access and mobility management function network element or the session management function network element is overloaded. The congestion control method according to claim 8, wherein the access and mobility management function network element receives the indication sent by the UE that the UE supports the control plane data backoff timer capability, which specifically includes: the access and mobility management function The network element receives the 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, the access and mobility management function network element receives the UE through a non-access layer session management message The sent indication that the UE supports the control plane data backoff timer capability. The congestion control method according to claim 8, wherein the access and mobility management function network element sends control plane data backoff timer duration information to the UE, which specifically includes: the access and mobility management function network element Send control plane data back-off timer 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 to the UE through a non-access layer session management message Backoff timer duration information. The congestion control 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 includes: the access and mobility management The 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 congestion control method according to any one of claim 8 to 11, wherein after the access and mobility management function network element receives the indication sent by the UE that the UE supports the control plane data backoff timer capability, the method returns Including: the access and mobility management function network element sends a cause value to the UE, and the cause value is used to indicate to the UE the success or failure of sending the control plane data transmitted by the UE. The congestion control method according to claim 12, wherein the access and mobility management function network element sends the cause value to the UE, specifically including: the access and mobility management function network element or the session management function network element is overloaded At the time, the access and mobility management function network element sends to the UE the reason value used to indicate the failure of the transmission of the control plane data transmitted by the UE; or, the access and mobility management function network element or the session management function network element When 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 sends to the UE a reason value for indicating the successful transmission of the control plane data transmitted by the UE. The congestion control 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 further includes: The access and mobility management function network element receives the release auxiliary information sent by the UE; the release auxiliary information is used to indicate that there is no subsequent uplink or downlink data transmission. The congestion control method according to any one of claim 8 to 11, wherein after the access and mobility management function network element receives the indication sent by the UE that the UE supports the control plane data backoff timer capability, the method returns It 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 congestion control method according to claim 15, wherein, before the access and mobility management function network element sends the protocol data unit session identifier to the UE, the method further includes: the access and mobility management function network element according to The overload information sent by the session management function network element determines the session identifier of the protocol data unit associated with the session management function. The congestion control method according to claim 9, wherein after the access and mobility management function network element receives the indication sent by the UE through the non-access layer mobility management message that the UE supports the control plane data backoff timer capability, The method further includes: the access and mobility management function network element instructs the session management function network element that the UE supports the control plane data backoff timer capability. A method for congestion control, comprising: a session management function network element receiving an indication sent by a UE that the UE supports the control plane data backoff timer capability; when the session management function network element sends a control plane data backoff timer to the UE Long information, so that the UE starts the control plane data back-off timer, and does not transmit data through the control plane before the control plane data back-off timer expires; the control plane data back-off timer is the session management function network element When overloaded, the session management function network element is set to the UE. The congestion control method according to claim 18, wherein the session management function network element receives the indication sent by the UE that the UE supports the control plane data backoff timer capability, which specifically includes: the session management function network element receives the non-transmission signal sent by the UE. The indication contained in the access layer session management message that the UE supports the control plane data backoff timer capability; or, the session management function network element receives the access and mobility management function network element sent by the UE to support the control plane data backoff timer The indication of the capability of the device, 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. The congestion control method according to claim 18, wherein the session management function network element sends the control plane data backoff timer duration information to the UE, which specifically includes: the session management function network element uses a non-access layer session management message Send the control plane data backoff timer duration information to the UE. The congestion control method according to any one of request items 18 to 20, wherein after the session management function network element receives the indication from the UE that the UE supports the control plane data backoff timer capability, the method further includes: the session The management function network element sends a reason value to the UE, and the reason value is used to indicate the success or failure of data transmission to the UE. The congestion control method according to claim 21, wherein the session management function network element sends the cause value to the UE, which specifically includes: when the session management function network element is overloaded, the session management function network element sends a message to the UE The value indicating the reason for the failure of sending control plane data transmitted by the UE; or, when the session management function network element is overloaded and the release auxiliary information provided by the UE indicates that there is no subsequent uplink or downlink data transmission, the session management function network element sends the The UE sends a reason value used to indicate the success of sending the control plane data transmitted by the UE. The congestion control 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 includes: the session management function network The element receives the release auxiliary information sent by the UE, and the release auxiliary information is used to indicate that there is no subsequent uplink or downlink data transmission. The congestion control method according to any one of request items 18 to 20, wherein after the session management function network element receives the indication from the UE that the UE supports the control plane data backoff timer capability, the method further includes: the session The management function network element sends an agreement data unit session identifier to the UE, and the agreement data unit session identifier is used to indicate to the UE that the agreement data unit session is in a congested state. A congestion control device, which is characterized by comprising: a memory for storing computer commands; a communication interface for sending to a network element with access and mobility management functions or a network element with a session management function to support control plane data backoff timer capability Instruction of; receiving the access and mobility management function network element or the control plane data back-off timer information indicated by the session management function network element; the control plane data back-off timer is the access and mobility management function network element Or when 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; the processor is in communication connection with the memory and the communication interface for executing the The computer command in the memory is used to activate the control plane data back-off timer when the computer command is executed, and control the communication interface to not transmit data through the control plane before the control plane data back-off timer expires. The congestion control device according to claim 25, wherein the communication interface is specifically configured to execute the congestion control method according to any one of claims 2 to 6: the processor is specifically configured to execute the congestion control method according to claim 7 Congestion control method. A congestion control device is characterized by comprising: a memory for storing computer instructions; a communication interface for communicating with UE; a processor for communicating with the memory and the communication interface for executing the memory The computer command in the computer command is used to control the communication interface to perform the following operations when the computer command is executed: receive the instruction from the UE that the UE supports the control plane data backoff timer capability; send the control plane data backoff timer duration to the UE Information so that the UE starts the control plane data back-off timer, and does not transmit data through the control plane before the control plane data back-off timer expires; wherein, the control plane data back-off timer is the device or session management The device is set to the UE when the functional network element is overloaded. The congestion control device according to claim 27, wherein the communication interface is specifically configured to execute the congestion control method according to any one of claims 9 to 17. A congestion control device is characterized by comprising: a memory for storing computer instructions; a communication interface for communicating with UE; a processor for communicating with the memory and the communication interface for executing the memory The computer command in the computer command is used to control the communication interface to perform the following operations when the computer command is executed: receive the instruction from the UE that the UE supports the control plane data backoff timer capability; send the control plane data backoff timer duration to the UE Information so that the UE starts the control plane data back-off timer, and does not transmit data through the control plane before the control-plane data back-off timer expires; when the control-plane data back-off timer is the communication interface overload, the The communication interface is set to the UE. The congestion control device according to claim 29, wherein the communication interface is specifically configured to execute the congestion control method according to any one of claims 19 to 24.

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