Communication method, communication system and related device

Abstract

Disclosed are a communication method, a communication system and a related device, the communication method comprising: a PCF network element sending a first request to a session management function (SMF) network element, the first request comprising indication information of one or more first QoS parameters, the indication information of each first QoS parameter being used for requesting a monitoring capability of a corresponding first QoS parameter; and the PCF network element receives a first message from the SMF network element, the first message being used for indicating the monitoring capability of the one or more first QoS parameters, and the monitoring capability of the one or more first QoS parameters being used for indicating whether the network supports monitoring of the one or more first QoS parameters. In the embodiment of the invention, the network side realizes the monitoring capability request and notification of the QoS parameter granularity, the AF network element can request the monitoring capability of the QoS parameter granularity from the PCF network element, and the PCF network element can notify the monitoring capability of the QoS parameter granularity based on the request of the AF network element.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a communication method, a communication system and related devices. Background Art

[0002] At present, in the fifth generation (5G) communication system, the application function (AF) network element can query or subscribe to the network for relevant information on QoS monitoring before sending a service quality (QoS) monitoring request. However, the flexibility of the network in supporting QoS monitoring queries is low, and the event report sent by the network in response to the query request of the AF network element has limited effect on the AF network element, making it difficult for the AF network element to make further adjustments to QoS monitoring. Summary of the invention

[0003] The embodiments of the present application provide a communication method, a communication system and related devices, which implement QoS parameter granularity monitoring capability request and notification on the network side, which is conducive to improving the flexibility of QoS monitoring query.

[0004] In the first aspect, the embodiment of the present application provides a communication method, which is applied to a policy control function PCF network element. Unless otherwise specified, the PCF network element in the present application can refer to the PCF network element itself or a module in the PCF network element. For example, the module can be a communication module in the PCF network element, or a circuit or chip responsible for the communication function in the PCF network element, such as a modem chip, also known as a baseband chip, or a system on chip (SoC) chip or system in package (SIP) chip containing a modem core. Alternatively, it can also be a logic module or software that can realize all or part of the PCF network element functions. For ease of description, the following takes the PCF network element as an example, and the method includes:

[0005] The PCF network element sends a first request to the session management function SMF network element, where the first request includes first indication information, where the first indication information is used to request monitoring capability information of a first quality of service QoS parameter, where the first QoS parameter corresponds to the first indication information; the PCF network element receives a first message from the SMF network element, where the first message is used to indicate monitoring capability information of the first QoS parameter, where the monitoring capability information of the first QoS parameter is used to indicate whether the network supports monitoring of the first QoS parameter.

[0006] It can be seen that in the embodiment of the present application, the PCF network element can request the monitoring capability information of the first QoS parameter from the SMF network element through a first request, and the SMF network element can indicate to the PCF network element whether the network supports monitoring the first QoS parameter through a first message based on the QoS parameter monitoring capability of the network, thereby realizing the request and notification of the monitoring capability information of the QoS parameter granularity on the network side, which is conducive to improving the flexibility of QoS monitoring query. In the case where the network side supports the request and notification of the monitoring capability information of the QoS parameter granularity, the AF network element can request the monitoring capability information of the QoS parameter granularity from the PCF network element (i.e., from the network), and the PCF network element can notify the monitoring capability information of the QoS parameter granularity based on the request of the AF network element, thereby enabling the AF network element to obtain the monitoring capability information of the QoS parameter granularity, so that the AF network element can make further adjustments to the monitoring request of the QoS parameter based on the monitoring capability information of the QoS parameter granularity.

[0007] In combination with the first aspect, in a possible implementation, the first request also includes third indication information of at least one third QoS parameter, and each third indication information of at least one third QoS parameter is used to request monitoring capability information of the corresponding third QoS parameter.

[0008] In this implementation, the PCF network element can also request the monitoring capability of at least one third QoS parameter from the SMF network element through a first request, and the SMF network element can also indicate to the PCF network element whether the network supports monitoring of the at least one third QoS parameter through a first message, thereby realizing the monitoring capability information request and notification of multiple QoS parameters on the network side.

[0009] In combination with the first aspect, in a possible implementation manner, the method further includes:

[0010] The PCF network element receives a second request including second indication information, the second indication information is used to request monitoring capability information of a second QoS parameter, the second QoS parameter corresponds to the second indication information; the first indication information is determined by the PCF network element based on the second indication information.

[0011] In this implementation, when the PCF network element receives the request (i.e., the second request) from the AF network element for the monitoring capability of one or more second QoS parameters, if the PCF network element needs to further send a request (i.e., the first request) to the SMF network element based on its own capability decision, it can determine the indication information of the first QoS parameters that need to be carried in the request based on the indication information of the one or more second QoS parameters.

[0012] In combination with the first aspect, in a possible implementation method, when the second indication information only includes indication information of PDV and / or indication information of RTT and the PCF network element supports monitoring of PDV and / or RTT, the first indication information only includes indication information of packet delay, and the indication information of packet delay is determined by the PCF network element based on the indication information of PDV and / or indication information of RTT.

[0013] In this implementation, if the second QoS parameter of the monitoring capability requested by the AF network element only includes PDV and / or RTT, and the PCF network element supports monitoring PDV and / or RTT, the PCF network element decides that it needs to request the monitoring capability of packet delay from the SMF network element.

[0014] In combination with the first aspect, in a possible implementation manner, when the second indication information includes indication information of PDV and / or indication information of RTT, and the second indication information includes indication information of packet delay, and the PCF network element supports monitoring of PDV and / or RTT, the first indication information includes indication information other than the indication information of PDV and / or the indication information of RTT in the second indication information;

[0015] When the second indication information includes indication information of PDV and / or indication information of RTT, and does not include indication information of packet delay, and the PCF network element supports monitoring of PDV and / or RTT, the first indication information includes indication information in the second indication information except the indication information of PDV and / or the indication information of RTT, and the first indication information includes indication information of packet delay, and the indication information of packet delay is determined by the PCF network element based on the indication information of PDV and / or the indication information of RTT.

[0016] In this implementation, if the second QoS parameters for which the AF network element requests monitoring capability include multiple ones, and the multiple second QoS parameters include at least one of PDV, RTT and packet delay, and the PCF network element supports monitoring PDV and / or RTT, then the PCF decision needs to request the monitoring capability of the second QoS parameters other than PDV and / or RTT from the SMF network element. If the second QoS parameters for which the AF network element requests monitoring capability include multiple ones, and the multiple second QoS parameters include PDV and / or RTT but do not include packet delay, and the PCF network element supports monitoring PDV and / or RTT, then the PCF network element decision needs to request the monitoring capability of the second QoS parameters other than PDV and / or RTT from the SMF network element, and needs to request the monitoring capability of packet delay from the SMF network element.

[0017] In combination with the first aspect, in a possible implementation method, when the second indication information includes indication information of PDV and / or indication information of RTT, and the PCF network element does not support monitoring of PDV and / or RTT, the first indication information includes indication information in the second indication information except for the indication information of PDV and / or the indication information of RTT.

[0018] In this implementation, if the AF requests monitoring capability for multiple second QoS parameters, and the multiple second QoS parameters include PDV and / or RTT, but the PCF network element does not support monitoring PDV and / or RTT, the PCF network element decides that it needs to request monitoring capability of the second QoS parameters other than PDV and / or RTT among the multiple second QoS parameters from the SMF network element.

[0019] In combination with the first aspect, in a possible implementation manner, the PCF network element determines whether the network supports monitoring PDV and / or RTT based on whether the network supports monitoring packet delay indicated by the first message.

[0020] In this implementation, if the PCF network element supports monitoring PDV and / or RTT, it can determine whether the network supports monitoring PDV and / or RTT based on whether the network supports monitoring packet delay indicated by the first message sent by the SMF network element. If the AF network element requests the PCF network element for the monitoring capability of PDV and / or RTT, the PCF network element can indicate whether the network supports monitoring PDV and / or RTT through a second message.

[0021] In combination with the first aspect, in a possible implementation manner, the second request comes from the AF network element; the PCF network element may send a third request to the unified data management UDM network element and / or the unified data storage UDR network element, where the third request is used to request the contract information of the user corresponding to the AF network element;

[0022] The first request is sent by the PCF network element when the contract information supports monitoring of QoS parameters.

[0023] In this implementation method, the PCF network element can obtain the contract information of the user corresponding to the AF network element from the UDM network element and / or the UDR network element. If the contract information of the user supports monitoring of QoS parameters, the PCF network element decides that it needs to further send a request to the SMF network element; if the contract information of the user does not support monitoring of QoS parameters, the PCF network element will no longer send a request to the SMF network element, which is conducive to reducing the signaling interaction between the PCF network element and the SMF network element.

[0024] In combination with the first aspect, in a possible implementation, the PCF network element sends a second message to the AF network element, where the second message is used to indicate monitoring capability information of a second QoS parameter, and the monitoring capability information of the second QoS parameter is used to indicate whether the network supports monitoring of the second QoS parameter.

[0025] In this implementation, the PCF network element may request monitoring capability information on the QoS parameter granularity of the AF network element by indicating the monitoring capability information of one or more second QoS parameters requested by the AF network element through a second message, so that the AF network element may adjust subsequent QoS parameter monitoring requests based on whether the network supports monitoring of the one or more second QoS parameters.

[0026] In combination with the first aspect, in a possible implementation, the second message includes indication information in the second QoS parameter that the network does not support monitoring of the target second QoS parameter, and / or the second message includes reason information why the network does not support monitoring of the target second QoS parameter.

[0027] In this implementation, for the target second QoS parameters that have been decided not to be supported by the network for monitoring, the PCF network element may carry indication information of this type of second QoS parameters or carry reason information about the network not supporting this type of second QoS parameters in the second message, so as to indicate to the AF network element that the network does not support monitoring of this type of second QoS parameters, which is helpful in avoiding the AF network element from sending monitoring requests for this type of second QoS parameters.

[0028] On the second aspect, the embodiment of the present application provides a communication method, which is applied to the SMF network element. Unless otherwise specified, the SMF network element in the present application can refer to the SMF network element itself or a module in the SMF network element. For example, the module can be a communication module in the SMF network element, or a circuit or chip responsible for the communication function in the SMF network element, such as a modem chip, also known as a baseband chip, or a SoC chip or SIP chip containing a modem core. Alternatively, it can also be a logic module or software that can realize all or part of the functions of the SMF network element. For ease of description, the following takes the SMF network element as an example, and the method includes:

[0029] The SMF network element receives a first request from the PCF network element, where the first request includes first indication information, where the first indication information is used to request monitoring capability information of a first quality of service QoS parameter, where the first QoS parameter corresponds to the first indication information; the SMF network element sends a first message to the PCF network element, where the first message is used to indicate the monitoring capability information of the first QoS parameter, where the monitoring capability information of the first QoS parameter is used to indicate whether the network supports monitoring of the first QoS parameter.

[0030] It can be seen that in the embodiment of the present application, when the SMF network element receives the first request from the PCF network element, it can determine whether the network supports monitoring the first QoS parameter requested by the PCF network element based on the QoS parameter monitoring capability of the network, and indicate to the PCF network element through the first message whether the network supports monitoring the first QoS parameter, thereby realizing the request and notification of monitoring capability information at the granularity of QoS parameters on the network side, which is conducive to improving the flexibility of QoS monitoring queries. In the case where the network side supports the request and notification of monitoring capability information at the granularity of QoS parameters, the AF network element can request the monitoring capability information at the granularity of QoS parameters from the PCF network element (i.e., from the network), and the PCF network element can perform the notification of monitoring capability information at the granularity of QoS parameters based on the request of the AF network element, thereby enabling the AF network element to obtain the monitoring capability information at the granularity of QoS parameters, so that the AF network element can make further adjustments to the monitoring request of QoS parameters based on the monitoring capability information at the granularity of QoS parameters.

[0031] In combination with the second aspect, in a possible implementation, the first request also includes third indication information of at least one third QoS parameter, and each third indication information of at least one third QoS parameter is used to request monitoring capability information of the corresponding third QoS parameter.

[0032] In this implementation, the PCF network element can also request the monitoring capability of at least one third QoS parameter from the SMF network element through a first request, and the SMF network element can also indicate to the PCF network element whether the network supports monitoring of the at least one third QoS parameter through a first message, thereby realizing the monitoring capability information request and notification of multiple QoS parameters on the network side.

[0033] In combination with the second aspect, in a possible implementation method, the SMF network element can also receive a third message from the access and mobility management function AMF network element, and the third message is used to indicate the QoS parameter monitoring capability information of the wireless access network device; the SMF network element sends a fourth request to the user plane function UPF network element based on the QoS parameter monitoring capability information of the wireless access network device, and the fourth request is used to request the QoS parameter monitoring capability information of the UPF network element.

[0034] In this implementation, the SMF network element can obtain the QoS parameter monitoring capability information of the RAN device from the AMF network element, and decide which QoS parameters' monitoring capability information to request from the UPF network element based on the QoS parameter monitoring capability information of the RAN device. For QoS parameters that the RAN device does not support monitoring, the SMF network element no longer needs to request its monitoring capability information from the UPF, which helps reduce the signaling interaction between the SMF network element and the UPF network element.

[0035] In conjunction with the second aspect, in a possible implementation manner, the QoS parameter monitoring capability information of the wireless access network device includes at least one of the following: whether the wireless access network device supports clock synchronization, a monitoring mode supported by the wireless access network device, and a maximum number of QoS flows supported by the wireless access network device for monitoring;

[0036] The SMF network element can receive a QoS parameter monitoring request from the PCF network element; the SMF network element determines whether to send a QoS parameter monitoring request to the wireless access network device based on at least one of whether the wireless access network device supports clock synchronization, the monitoring method supported by the wireless access network device, and the maximum number of QoS flows supported by the wireless access network device for monitoring.

[0037] In this implementation, when the SMF network element receives a QoS parameter monitoring request, it can determine whether to send a QoS parameter monitoring request to the RAN device through the UPF network element based on at least one of whether the RAN device supports clock synchronization sent by the AMF network element, the monitoring method supported by the RAN device, and the maximum number of QoS flows supported for monitoring by the RAN device, thereby helping to reduce the signaling interaction between the SMF network element and the UPF network element.

[0038] In combination with the second aspect, in a possible implementation method, the first request is sent by the PCF network element when it receives the second request, the second request includes second indication information, the second indication information is used to request monitoring capability information of the second QoS parameter, and the second QoS parameter corresponds to the second indication information; the first indication information is determined by the PCF network element based on the second indication information.

[0039] In this implementation, when the PCF network element receives the request (i.e., the second request) from the AF network element for the monitoring capability of one or more second QoS parameters, if the PCF network element needs to further send a request (i.e., the first request) to the SMF network element based on its own capability decision, it can determine the indication information of the first QoS parameters that need to be carried in the request based on the indication information of the one or more second QoS parameters.

[0040] In combination with the second aspect, in a possible implementation method, when the second indication information only includes indication information of PDV and / or indication information of RTT and the PCF network element supports monitoring of PDV and / or RTT, the first indication information only includes indication information of packet delay, and the indication information of packet delay is determined by the PCF network element based on the indication information of PDV and / or indication information of RTT.

[0041] In this implementation, if the second QoS parameter of the monitoring capability requested by the AF network element only includes PDV and / or RTT, and the PCF network element supports monitoring PDV and / or RTT, the PCF network element decides that it needs to request the monitoring capability of packet delay from the SMF network element.

[0042] In conjunction with the second aspect, in a possible implementation manner, when the second indication information includes indication information of PDV and / or indication information of RTT, and the second indication information includes indication information of packet delay, and the PCF network element supports monitoring of PDV and / or RTT, the first indication information includes indication information other than the indication information of PDV and / or the indication information of RTT in the second indication information;

[0043] When the second indication information includes indication information of PDV and / or indication information of RTT, and does not include indication information of packet delay, and the PCF network element supports monitoring of PDV and / or RTT, the first indication information includes indication information in the second indication information except the indication information of PDV and / or the indication information of RTT, and the first indication information includes indication information of packet delay, and the indication information of packet delay is determined by the PCF network element based on the indication information of PDV and / or the indication information of RTT.

[0044] In this implementation, if the second QoS parameters for which the AF network element requests monitoring capability include multiple ones, and the multiple second QoS parameters include at least one of PDV, RTT and packet delay, and the PCF network element supports monitoring PDV and / or RTT, then the PCF decision needs to request the monitoring capability of the second QoS parameters other than PDV and / or RTT from the SMF network element. If the second QoS parameters for which the AF network element requests monitoring capability include multiple ones, and the multiple second QoS parameters include PDV and / or RTT but do not include packet delay, and the PCF network element supports monitoring PDV and / or RTT, then the PCF network element decision needs to request the monitoring capability of the second QoS parameters other than PDV and / or RTT from the SMF network element, and needs to request the monitoring capability of packet delay from the SMF network element.

[0045] In combination with the second aspect, in a possible implementation method, when the second indication information includes indication information of PDV and / or indication information of RTT, and the PCF network element does not support monitoring of PDV and / or RTT, the first indication information includes indication information in the second indication information except for the indication information of PDV and / or indication information of RTT.

[0046] In this implementation, if the AF requests monitoring capability for multiple second QoS parameters, and the multiple second QoS parameters include PDV and / or RTT, but the PCF network element does not support monitoring PDV and / or RTT, the PCF network element decides that it needs to request monitoring capability of the second QoS parameters other than PDV and / or RTT among the multiple second QoS parameters from the SMF network element.

[0047] In conjunction with the second aspect, in a possible implementation manner, whether the network supports monitoring PDV and / or RTT is determined by the PCF network element based on whether the network supports monitoring packet delay indicated by the first message.

[0048] In this implementation, the SMF network element can indicate to the PCF network element through a first message whether the network supports monitoring packet delay. If the PCF network element itself supports monitoring PDV and / or RTT, it can determine whether the network supports monitoring PDV and / or RTT based on whether the network supports monitoring packet delay indicated by the first message sent by the SMF network element. If the AF network element requests the PCF network element for the monitoring capability of PDV and / or RTT, the PCF network element can indicate through a second message whether the network supports monitoring PDV and / or RTT.

[0049] In conjunction with the second aspect, in a possible implementation manner, the second request comes from the AF network element, and the first request is sent by the PCF network element when the subscription information of the user corresponding to the AF network element supports monitoring of QoS parameters.

[0050] In this implementation, when the contract information of the user corresponding to the AF network element supports monitoring of QoS parameters, and the PCF network element decides that it needs to further send a request to the SMF network element, the SMF network element will receive the PCF network element's request for the monitoring capability of the first QoS parameter (ie, the first request).

[0051] In a third aspect, an embodiment of the present application provides a communication system, which includes a policy control function network element and a session management function network element; wherein the policy control function network element is used to execute the method described in any one of the embodiments of the first aspect above; and the session management function network element is used to execute the method described in any one of the embodiments of the second aspect above.

[0052] It can be understood that the specific implementation and beneficial effects of the embodiment described in the third aspect can refer to the specific implementation and beneficial effects of the methods described in the first to second aspects, and will not be repeated here.

[0053] In a fourth aspect, an embodiment of the present application provides a communication device, the device comprising a module for executing the method described in the first aspect above, such as a first transceiver unit and a first processing unit; wherein:

[0054] A first transceiver unit is used to send a first request to a session management function SMF network element, where the first request includes first indication information, where the first indication information is used to request monitoring capability information of a first quality of service QoS parameter, and the first QoS parameter corresponds to the first indication information; and receive a first message from the SMF network element, where the first message is used to indicate the monitoring capability information of the first QoS parameter, and the monitoring capability information of the first QoS parameter is used to indicate whether the network supports monitoring the first QoS parameter.

[0055] In conjunction with the fourth aspect, in a possible implementation manner, the first transceiver unit is further configured to:

[0056] A second request is received, the second request includes second indication information, the second indication information is used to request monitoring capability information of a second QoS parameter, the second QoS parameter corresponds to the second indication information; the first indication information is determined by the communication device based on the second indication information.

[0057] In combination with the fourth aspect, in a possible implementation method, when the second indication information only includes indication information of PDV and / or indication information of RTT and the PCF network element supports monitoring of PDV and / or RTT, the first indication information only includes indication information of packet delay, and the indication information of packet delay is determined by the communication device based on the indication information of PDV and / or indication information of RTT.

[0058] In conjunction with the fourth aspect, in a possible implementation manner, when the second indication information includes indication information of PDV and / or indication information of RTT, and the second indication information includes indication information of packet delay, and the PCF network element supports monitoring of PDV and / or RTT, the first indication information includes indication information other than the indication information of PDV and / or the indication information of RTT in the second indication information;

[0059] When the second indication information includes indication information of PDV and / or indication information of RTT, and the second indication information does not include indication information of packet delay, and the PCF network element supports monitoring of PDV and / or RTT, the first indication information includes indication information in the second indication information except the indication information of PDV and / or the indication information of RTT, and the first indication information includes indication information of packet delay, and the indication information of packet delay is determined by the communication device based on the indication information of PDV and / or the indication information of RTT.

[0060] In combination with the fourth aspect, in a possible implementation method, when the second indication information includes indication information of PDV and / or indication information of RTT, and the PCF network element does not support monitoring of PDV and / or RTT, the first indication information includes indication information in the second indication information except for the indication information of PDV and / or indication information of RTT.

[0061] In conjunction with the fourth aspect, in a possible implementation manner, the first processing unit is configured to:

[0062] Whether the network supports monitoring PDV and / or RTT is determined based on whether the network supports monitoring packet delay in the first message.

[0063] In conjunction with the fourth aspect, in a possible implementation manner, the second request comes from the AF network element; and the first transceiver unit is further configured to:

[0064] Sending a third request to the UDM network element and / or the UDR network element, where the third request is used to request the subscription information of the user corresponding to the AF network element;

[0065] The first request is sent by the communication device when the contract information supports monitoring of QoS parameters.

[0066] In conjunction with the fourth aspect, in a possible implementation manner, the first transceiver unit is further configured to:

[0067] A second message is sent to the AF network element, where the second message is used to indicate monitoring capability information of the second QoS parameter, and the monitoring capability information of the second QoS parameter is used to indicate whether the network supports monitoring the second QoS parameter.

[0068] In combination with the fourth aspect, in one possible implementation, the second message includes indication information in the second QoS parameter that the network does not support monitoring of the target second QoS parameter, and / or the second message includes reason information why the network does not support monitoring of the target second QoS parameter.

[0069] It should be understood that since the method embodiment and the device embodiment are different presentation forms of the same technical concept, the content of the first aspect of the embodiment of the present application should be synchronously adapted to the fourth aspect of the embodiment of the present application, and can achieve the same or similar beneficial effects, and will not be repeated here.

[0070] In a fifth aspect, an embodiment of the present application provides a communication device, the device comprising a module for executing the method described in the second aspect above, such as a second transceiver unit and a second processing unit; wherein:

[0071] A second transceiver unit is used to receive a first request from a PCF network element, where the first request includes first indication information, where the first indication information is used to request monitoring capability information of a first quality of service QoS parameter, and the first QoS parameter corresponds to the first indication information; and send a first message to the PCF network element, where the first message is used to indicate the monitoring capability information of the first QoS parameter, and the monitoring capability information of the first QoS parameter is used to indicate whether the network supports monitoring the first QoS parameter.

[0072] In combination with the fifth aspect, in a possible implementation manner, the second transceiver unit is further used to receive a third message from the AMF network element, where the third message is used to indicate QoS parameter monitoring capability information of the wireless access network device;

[0073] The second processing unit is used to send a fourth request to the UPF network element based on the QoS parameter monitoring capability information of the wireless access network device, and the fourth request is used to request the QoS parameter monitoring capability information of the UPF network element.

[0074] In conjunction with the fifth aspect, in a possible implementation manner, the QoS parameter monitoring capability information of the wireless access network device includes at least one of the following: whether the wireless access network device supports clock synchronization, a monitoring mode supported by the wireless access network device, and a maximum number of QoS flows supported by the wireless access network device for monitoring;

[0075] The second transceiver unit is further used to receive a QoS parameter monitoring request from a PCF network element;

[0076] The second processing unit is also used to determine whether to send a QoS parameter monitoring request to the wireless access network device based on at least one of whether the wireless access network device supports clock synchronization, the monitoring method supported by the wireless access network device, and the maximum number of QoS flows supported by the wireless access network device for monitoring.

[0077] In combination with the fifth aspect, in a possible implementation method, the first request is sent by the PCF network element when it receives the second request, the second request includes second indication information, the second indication information is used to request monitoring capability information of the second QoS parameter, and the second QoS parameter corresponds to the second indication information; the first indication information is determined by the PCF network element based on the second indication information.

[0078] In combination with the fifth aspect, in a possible implementation method, when the second indication information only includes indication information of PDV and / or indication information of RTT and the PCF network element supports monitoring of PDV and / or RTT, the first indication information only includes indication information of packet delay, and the indication information of packet delay is determined by the PCF network element based on the indication information of PDV and / or indication information of RTT.

[0079] In conjunction with the fifth aspect, in a possible implementation manner, when the second indication information includes indication information of PDV and / or indication information of RTT, and the second indication information includes indication information of packet delay, and the PCF network element supports monitoring of PDV and / or RTT, the first indication information includes indication information other than the indication information of PDV and / or the indication information of RTT in the second indication information;

[0080] When the second indication information includes indication information of PDV and / or indication information of RTT, and does not include indication information of packet delay, and the PCF network element supports monitoring of PDV and / or RTT, the first indication information includes indication information in the second indication information except the indication information of PDV and / or the indication information of RTT, and the first indication information includes indication information of packet delay, and the indication information of packet delay is determined by the PCF network element based on the indication information of PDV and / or the indication information of RTT.

[0081] In combination with the fifth aspect, in a possible implementation method, when the second indication information includes indication information of PDV and / or indication information of RTT, and the PCF network element does not support monitoring of PDV and / or RTT, the first indication information includes indication information in the second indication information except for the indication information of PDV and / or indication information of RTT.

[0082] In combination with the fifth aspect, in a possible implementation manner, whether the network supports monitoring PDV and / or RTT is determined by the PCF network element based on whether the network supports monitoring packet delay indicated by the first message.

[0083] In combination with the fifth aspect, in a possible implementation, the second request comes from the AF network element, and the first request is sent by the PCF network element when the contract information of the user corresponding to the AF network element supports monitoring of QoS parameters.

[0084] It should be understood that since the method embodiment and the device embodiment are different presentation forms of the same technical concept, the content of the second aspect of the embodiment of the present application should be synchronously adapted to the fifth aspect of the embodiment of the present application, and can achieve the same or similar beneficial effects, and will not be repeated here.

[0085] In a sixth aspect, an embodiment of the present application provides a communication device for implementing any one of the first or second aspects above, or for implementing a communication method in any one of the implementations of any one of the first or second aspects above. Exemplarily, the device may be a policy control function network element, or a module (such as a processor, a chip, or a chip system, etc.) applied to a policy control function network element, or a logical node, a logical module, or software that can implement all or part of the functions on the policy control function network element side. The device may be a session management function network element, or a module (such as a processor, a chip, or a chip system, etc.) applied to a session management function network element, or a logical node, a logical module, or software that can implement all or part of the functions on the session management function network element side.

[0086] In a possible implementation, the communication device in the sixth aspect includes a unit, module or means for respectively executing the method in any aspect or any implementation of the first aspect or the second aspect. The unit, module or means may be implemented by software, or by hardware, or by a combination of software and hardware.

[0087] In another possible implementation, the communication device in the sixth aspect includes at least one processor; the at least one processor is configured to execute the corresponding functions in the above-mentioned communication method.

[0088] Optionally, the at least one processor may be coupled to at least one memory, and the at least one memory is used to store programs (instructions) and / or data (such as one or more computer programs) necessary for the device. Optionally, the communication device may also include a communication interface, and the communication interface is used to implement communication between the device and other network elements. Optionally, the at least one memory may be located inside the communication device or outside the communication device.

[0089] Optionally, the communication device may further include a transceiver device, the processor is coupled to the transceiver device, and the processor is used to execute a computer program or instruction to control the transceiver device to receive and send information; when the processor executes the computer program or instruction, the processor is also used to implement the above method through a logic circuit or execute code instructions. The transceiver device may be a transceiver, a transceiver circuit, or an input-output interface, which is used to receive signals from other communication devices outside the communication device and transmit them to the processor or send signals from the processor to other communication devices outside the communication device. When the communication device is a chip, the transceiver device is a transceiver circuit or an input-output interface.

[0090] When the communication device in the sixth aspect is a chip, the sending unit may be an output unit, such as an output circuit or a communication interface; the receiving unit may be an input unit, such as an input circuit or a communication interface. When the communication device is a terminal device, the sending unit may be a transmitter or a transmitter; the receiving unit may be a receiver or a receiver.

[0091] In the seventh aspect, an embodiment of the present application provides a chip, comprising: a processor, for calling and running a computer program from a memory, so that a device / apparatus equipped with the chip executes a method in any one of the embodiments of the first or second aspect above.

[0092] In an eighth aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program for execution by a device / apparatus, and when the computer program is executed, it implements a method in any one of the embodiments of the first aspect or the second aspect mentioned above.

[0093] In the ninth aspect, an embodiment of the present application provides a computer program product. When the computer program product is run by a device / apparatus, the device / apparatus executes a method in any one of the embodiments of the first aspect or the second aspect mentioned above. BRIEF DESCRIPTION OF THE DRAWINGS

[0094] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0095] Figure 1 A schematic diagram of the architecture of a 5G network provided in an embodiment of the present application;

[0096] Figure 2 A schematic diagram of a monitoring capability of AF requesting QoS from 5GS provided in an embodiment of the present application;

[0097] Figure 3 A flow chart of a communication method provided in an embodiment of the present application;

[0098] Figure 4 A flowchart of another communication method provided in an embodiment of the present application;

[0099] Figure 5 A flowchart of another communication method provided in an embodiment of the present application;

[0100] Figure 6 A schematic diagram of the overall process of a communication method provided in an embodiment of the present application;

[0101] Figure 7 A schematic diagram of a communication system provided in an embodiment of the present application;

[0102] Figure 8 A schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0103] Fig. 9 A schematic diagram of the structure of another communication device provided in an embodiment of the present application;

[0104] Fig.10 A schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0105] Fig.11 A schematic diagram of a baseband hardware provided in an embodiment of the present application. DETAILED DESCRIPTION

[0106] The terms "first", "second", "third" and "fourth" etc. in the specification and claims of the present application and the drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0107] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0108] The terms "component", "module", "system", etc. used in this specification are used to represent computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component can be, but is not limited to, a process running on a processor, a processor, an object, an executable file, an execution thread, a program and / or a computer. By way of illustration, both applications running on a terminal device and a terminal device can be components. One or more components may reside in a process and / or an execution thread, and a component may be located on a computer and / or distributed between two or more computers. In addition, these components may be executed from various computer-readable media having various data structures stored thereon. Components may, for example, communicate through local and / or remote processes according to signals having one or more data packets (e.g., data from two components interacting with another component between a local system, a distributed system and / or a network, such as the Internet interacting with other systems through signals).

[0109] First, the technical background of the present application is briefly introduced to facilitate understanding by those skilled in the art.

[0110] (1) 5G Core Network: 5G Core Network, 5GC;

[0111] (2) 5G Globally Unique Temporary Identity, 5G-GUTI;

[0112] (3) 5G temporary mobile subscriber identity: 5G S-Temporary Mobile Subscriber Identity, 5G-S-TMSI;

[0113] (4) 5G QoS Identifier: 5G QoS Identifier, 5QI;

[0114] (5) Access and Mobility Management Function, AMF;

[0115] (6) Radio Access Network, RAN;

[0116] (7) Application Service Provider: Application Service Provider, ASP;

[0117] (8) Next Generation Radio Access Network (NG RAN)

[0118] (9) Data Network: DN;

[0119] (10)Data Network Name, DNAI;

[0120] (11) Edge Application Server: EAS;

[0121] (12) Edge Application Server Discovery Function: EASDF;

[0122] (13) Operation Administration and Maintenance (OAM);

[0123] (14) Long Term Evolution: LTE;

[0124] (15) Network Exposure Function, NEF;

[0125] (16) Policy and Charging Control: PCC;

[0126] (17) Policy Control Function, PCF;

[0127] (18) Protocol Data Unit: PDU;

[0128] (19) Protocol Data Unit Session: Protocol Data Unit Session, PDU Session;

[0129] (20) Session Management Function, SMF;

[0130] (21) User Plane Function, UPF;

[0131] (22) Network Repository Function, NRF;

[0132] (23) Unified Data Management: UDM;

[0133] (24) Unified Data Repository: UDR;

[0134] (25) Authentication Server Function, AUSF;

[0135] (26) Standalone Non-Public Network, SNPN;

[0136] (27) Network Slice-specific and Standalone Non-Public Network Authentication and Authorization Function, NSSAAF;

[0137] (28) Network Slice Selection Function, NSSF;

[0138] (29) service communication proxy: SCP;

[0139] (30) Network slice admission control function: network slice admission control function, NSACF;

[0140] (31) User Equipment: UE.

[0141] See also Figure 1 , Figure 1 The following is a schematic diagram of a 5G network architecture provided in an embodiment of the present application. Figure 1 As shown, it mainly includes network elements such as UE, RAN, UPF, AF, PCF, SMF, AMF, UDM, NSSF, NEF, NRF, NSSAAF, AUSF, SCP, NSACF and DN, among which each part communicates through the interface Nx. Among them:

[0142] UE: can be called terminal equipment, terminal, access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless communication device, user agent or user device. The terminal equipment can also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a drone, a wearable device, a terminal device in a 5G network or a terminal device in an evolved public land mobile network (PLMN), etc., and the embodiments of the present application are not limited to this.

[0143] RAN: Provides network access functions for authorized users in a specific area, and can use transmission tunnels of different qualities according to the user level, business requirements, etc. The access network can be an access network using different access technologies. Current access network technologies include: wireless access network technology used in the third generation (3rd generation, 3G) system, wireless access network technology used in the fourth generation (4th generation, 4G) system, or NG RAN technology (such as wireless access technology used in 5G system, etc.). The wireless access network device can be, for example, a base station (NodeB), an evolved base station (evolved NodeB, eNB or eNodeB), a gNB, a base station in a future mobile communication system, or an access point (access point, AP) in a wifi wireless hotspot system, etc., or a wireless controller in a cloud radio access network (cloud radio access network, CRAN) scenario, or the wireless access network device can be a relay station, an access point, a vehicle-mounted device, a drone, a wearable device, and a network device in a 5G network or a network device in an evolved PLMN, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the wireless access network device.

[0144] AF: mainly transmits the requirements of the application side to the network side, such as the requirements for Quality of Service (QoS) detection, etc. AF can be a third-party functional entity or an application service deployed by an operator, such as the IP Multimedia Subsystem (IMS) voice call service.

[0145] UDM: Mainly responsible for managing contract data, user access authorization and other functions.

[0146] AMF: Mainly performs functions such as mobility management and access authentication / authorization. In addition, it is also responsible for transmitting user policies between UE and PCF.

[0147] UDR: Mainly responsible for the storage and access functions of contract data, policy data, application data and other types of data.

[0148] PCF: Mainly responsible for policy control functions such as session and service flow level billing, QoS bandwidth guarantee and mobility management, and UE policy decision-making.

[0149] SMF: Mainly used for session management, allocation and management of Internet protocol (IP) addresses of user equipment, selection of endpoints for manageable user plane functions, policy control and charging function interfaces, and downlink data communications.

[0150] UPF: As the interface UPF with the data network, it completes functions such as user plane data forwarding, session / flow-level billing statistics, and bandwidth limitation. It should be understood that in the 5G communication system, the user plane network element can be a UPF network element. In future communication systems, the user plane network element can still be a UPF network element, or it can have other names, which are not limited in this application.

[0151] PDU session: A session service that implements PDU connectivity between UE and DN.

[0152] NEF: Responsible for providing some network-related status information to application services.

[0153] DN: can be the Internet or other networks where services are deployed.

[0154] NSSAAF: Aims to ensure the security and legitimacy of the selection and use of network slices. It mainly uses authentication and authorization mechanisms to ensure that only authorized users or devices can select and use specified network slices.

[0155] NSSF: It is a key component in the 5G network architecture and is responsible for selecting the most appropriate network slice based on user needs and network resource management strategies.

[0156] SCP: It is used for communication and data exchange between different network functions. Its main function is to provide communication intermediary between services and ensure the security, reliability and efficiency of data flow and message exchange between network functions.

[0157] AUSF: Mainly responsible for the user's identity verification and authorization process. When the user accesses the network, it verifies whether the user's identity is legal to ensure the security of the network.

[0158] NSACF: Mainly ensures that the resources of network slices are reasonably allocated and effectively controls the access of different users or services in network slices to meet the requirements of QoS, resource utilization and network security.

[0159] based on Figure 1In the architecture shown, AF can request QoS parameter monitoring from NEF / PCF, where the requestable QoS parameters include packet delay, data rate, congestion, packet delay variation (PDV), round trip time over two QoS flows (RTT over two QoS flows), available data rate, etc. After receiving the QoS parameter monitoring request message from AF, PCF generates the corresponding PCC rule and sends it to SMF. SMF sends the QoS parameter monitoring request to UPF and RAN respectively. After completing the requested QoS parameter (such as packet delay) monitoring, UPF and RAN send the results to SMF, which then sends them to PCF or directly reports them to NEF / AF.

[0160] Before requesting QoS parameter monitoring from PCF, AF can request QoS monitoring capability from 5GS, such as Figure 2 As shown, AF can subscribe to whether the network supports QoS monitoring through a monitoring event, but this is only a coarse-grained QoS monitoring capability request. It does not support AF's query of monitoring capabilities for specific QoS parameters, nor does it support PCF (or network) notification of monitoring capabilities for specific QoS parameters requested by AF. The inability to request and notify monitoring capabilities at the granularity of QoS parameters makes it difficult for AF to make further adjustments to QoS parameter monitoring requests. On the other hand, PDV and RTT over two QoS flows are different from other QoS parameters because PCF needs to further calculate PDV and RTT based on the packet delay reported by SMF. Therefore, PDV and RTT not only rely on RAN's monitoring capabilities for packet delay, but also rely on PCF's own capabilities. How PCF notifies AF of its PDV and / or RTT monitoring capabilities after comprehensive decision-making is a problem that needs to be solved.

[0161] In order to overcome the shortcomings of the prior art, an embodiment of the present application proposes a communication method, which enhances the current monitoring events or adds monitoring events with QoS parameter granularity to support AF to request monitoring capabilities for specific QoS parameters, and the network can notify the monitoring capabilities with parameter granularity for the QoS parameters requested by AF. The method can be applied to various communication systems, for example, it can be applied to 5G mobile communication systems, future evolution systems or multiple communication convergence systems, etc., and can also be applied to existing communication systems, etc. The application scenarios of the technical solution provided by the present application may include various scenarios, such as machine to machine (M2M), macro and micro communications, enhanced mobile broadband (eMBB), ultra-high reliability and ultra-low latency communication (ultra-reliable&lowlatency communication, uRLLC) and massive machine type communication (mMTC).

[0162] For example, the embodiments of the present application can be applied to Figure 1 It should be understood that the above architecture applied to the embodiment of the present application is only an example, and the architecture applicable to the embodiment of the present application is not limited thereto, and any network architecture that can implement the communication method in the embodiment of the present application is applicable to the embodiment of the present application.

[0163] It should also be understood that the above naming is only defined for the convenience of distinguishing different functions and should not constitute any limitation to this application. This application does not exclude the possibility of using other naming in 5G networks and other future networks. For example, in 6G networks, some or all of the above networks may continue to use the terminology in 5G, or may use other names, etc.

[0164] The technical solution provided by this application is introduced in detail below in conjunction with specific implementation methods.

[0165] See also Figure 3 , Figure 3 A flow chart of a communication method provided in an embodiment of the present application, which can be based on Figure 1The system architecture shown is implemented, or it can also be implemented based on other communication systems. Among them, the execution subject on one side of the communication method can be a PCF network element, or it can be a module in the PCF network element. For example, the module can be a communication module in the PCF network element, or a circuit or chip in the PCF network element responsible for the communication function, such as a modem chip, also known as a baseband chip, or a SoC chip or SIP chip containing a modem core. Alternatively, it can also be a logic module or software that can realize all or part of the functions of the PCF network element. The execution subject on the other side of the communication method can be an SMF network element, or it can be a module in the SMF network element. For example, the module can be a communication module in the SMF network element, or a circuit or chip in the SMF network element responsible for the communication function, such as a modem chip, also known as a baseband chip, or a SoC chip or SIP chip containing a modem core. Alternatively, it can also be a logic module or software that can realize all or part of the functions of the SMF network element. For the convenience of description, the following takes PCF network elements and SMF network elements as examples. Figure 3 As shown, the method may include steps 301-302:

[0166] 301: The PCF network element sends a first request to the SMF network element.

[0167] Correspondingly, the SMF network element receives the first request from the PCF network element. The first request includes first indication information, and the first indication information is used to request monitoring capability information of the first QoS parameter. The first QoS parameter corresponds to the first indication information, that is, whether the network is requested to support monitoring of the first QoS parameter. The first QoS parameter refers to the QoS parameter indicated by the first indication information in the first request, and the first QoS parameter includes but is not limited to packet delay, data rate, congestion, and available data rate.

[0168] Exemplarily, the first request also includes third indication information of at least one third QoS parameter, and each third indication information of at least one third QoS parameter is used to request monitoring capability information of the corresponding third QoS parameter. That is, the PCF network element can request monitoring capability information of at least one QoS parameter from the SMF network element.

[0169] Exemplarily, the first request may be an enhancement of an existing Policy Control Request Trigger (PCRT), such as the sending of the PCRT to instruct the SMF to send the monitoring capability of each QoS parameter or to instruct the SMF to send the monitoring capability information of the QoS parameter requested by the PCF. Exemplarily, the first request may also be a newly added PCRT for each QoS parameter, such as for packet delay, the PCF sends its corresponding PCRT to the SMF to request the monitoring capability information of the packet delay from the SMF; for data rate, the PCF sends its corresponding PCRT to the SMF to request the monitoring capability information of the data rate from the SMF.

[0170] When the SMF network element receives the first request, it determines whether the network supports monitoring one or more QoS parameters requested by the PCF based on the QoS parameter monitoring capability of the network. Exemplarily, the QoS parameter monitoring capability of the network is determined by the SMF network element based on the QoS parameter monitoring capability of the RAN and the QoS parameter monitoring capability of the UPF network element.

[0171] 302: The SMF network element sends a first message to the PCF network element.

[0172] Correspondingly, the PCF network element receives a first message from the SMF network element, wherein the first message is used to indicate monitoring capability information of the first QoS parameter, and the monitoring capability information of the first QoS parameter is used to indicate whether the network supports monitoring the first QoS parameter.

[0173] Exemplarily, the first message is also used to indicate monitoring capability information of at least one third QoS parameter, and the monitoring capability information of each third QoS parameter in the at least one third QoS parameter is used to indicate whether the network supports monitoring of the third QoS parameter.

[0174] Exemplarily, the SMF network element can explicitly indicate which QoS parameters the network supports monitoring and which QoS parameters it does not support monitoring, such as carrying indication information of the first QoS parameter that the network does not support monitoring (such as packet delay not supported) in the first message, and carrying indication information of the first QoS parameter that the network supports monitoring (such as data rate supported) in the first message. Exemplarily, the SMF network element can use an explicit + implicit way to indicate which QoS parameters the network supports monitoring and which QoS parameters it does not support monitoring, such as carrying indication information of the first QoS parameter that the network does not support monitoring in the first message or carrying reason information of the network not supporting monitoring of certain first QoS parameters in the first message (such as RAN does not support monitoring packet delay). For certain first QoS parameters of the capability information requested by the PCF network element to monitor, if the first message does not carry indication information of the first QoS parameter, the PCF network element can determine that the network supports monitoring the first QoS parameter (i.e., implicitly indicating). Exemplarily, if the first message does not carry any information, the PCF network element can determine that the network supports monitoring the requested first QoS parameter (and at least one third QoS parameter). Exemplarily, if the first message carries predefined indication information or preconfigured indication information, the PCF network element may also determine that the network supports monitoring of the requested first QoS parameter (and at least one third QoS parameter).

[0175] Exemplarily, in an embodiment of the present application, the indication information of the QoS parameter may be the name, type, index, etc. of the QoS parameter, which is not limited.

[0176] It can be seen that in the embodiment of the present application, the PCF network element can request the monitoring capability information of the first QoS parameter from the SMF network element through a first request, and the SMF network element can indicate to the PCF network element whether the network supports monitoring the first QoS parameter through a first message based on the QoS parameter monitoring capability of the network, thereby realizing the request and notification of the monitoring capability information of the QoS parameter granularity on the network side, which is conducive to improving the flexibility of QoS monitoring query. In the case where the network side supports the request and notification of the monitoring capability information of the QoS parameter granularity, the AF network element can request the monitoring capability information of the QoS parameter granularity from the PCF network element (i.e., from the network), and the PCF network element can notify the monitoring capability information of the QoS parameter granularity based on the request of the AF network element, thereby enabling the AF network element to obtain the monitoring capability information of the QoS parameter granularity, so that the AF network element can make further adjustments to the monitoring request of the QoS parameter based on the monitoring capability information of the QoS parameter granularity.

[0177] See also Figure 4 , Figure 4A flow chart of another communication method provided in an embodiment of the present application is shown as follows: Figure 4 As shown, the method may include steps 401-406:

[0178] 401: The AF network element sends a second request to the PCF network element.

[0179] Correspondingly, the PCF network element receives a second request from the AF network element. The second request includes second indication information of one or more second QoS parameters, and the second indication information of each second QoS parameter is used to request the monitoring capability information of the corresponding second QoS parameter, that is, to request whether the network supports monitoring of the one or more second QoS parameters. The second QoS parameter refers to the QoS parameter indicated by the second indication information in the second request, and the second QoS parameter includes but is not limited to packet delay, data rate, congestion, available data rate, PDV, and RTT (RTT over two QoS flows). It should be understood that if the AF network element is located in a trusted domain, the AF network element can send the second request directly to the PCF network element; if the AF network element is located in a non-trusted domain, the AF network element can send the second request to the PCF network element through the NEF network element.

[0180] Exemplarily, the second request is used to request / subscribe to a monitoring capability event (event) of one or more second QoS parameters. The monitoring capability event may be an enhancement of an existing QoS monitoring event, such as adding indication information of QoS parameters to a subscription / request of an existing QoS monitoring event. Exemplarily, the monitoring capability event may also be a newly added monitoring capability event, such as adding a monitoring capability event for each QoS parameter, and the second request may be a subscription / request for a newly added QoS parameter monitoring capability event in the PCF.

[0181] Exemplarily, if the second request only includes PDV indication information and / or RTT indication information, and the PCF network element does not support monitoring PDV and / or RTT, step 402 is executed.

[0182] 402: The PCF network element sends a response message to the AF network element.

[0183] Correspondingly, the AF network element receives a response message from the PCF network element, wherein the response message is used to indicate that the network does not support monitoring of PDV and / or RTT.

[0184] Exemplarily, if the second request only includes PDV indication information and / or RTT indication information, and the PCF network element supports monitoring PDV and / or RTT, step 403 is executed; exemplarily, if the second request does not only include PDV indication information and / or RTT indication information (regardless of whether the PCF supports monitoring PDV and / or RTT), step 403 is executed.

[0185] 403: The PCF network element determines the first indication information based on the second indication information of one or more second QoS parameters.

[0186] In one example, when the second indication information only includes indication information of PDV and / or indication information of RTT, and the PCF network element supports monitoring of PDV and / or RTT, the PCF network element determines that it needs to request the monitoring capability of packet delay from the SMF network element, and therefore, the first indication information only includes indication information of packet delay.

[0187] In this implementation, if the second QoS parameter of the monitoring capability requested by the AF network element only includes PDV and / or RTT, and the PCF network element supports monitoring PDV and / or RTT, the PCF network element decides that it needs to request the monitoring capability of packet delay from the SMF network element.

[0188] In another example, when the second indication information includes indication information of PDV and / or indication information of RTT, and the second indication information includes indication information of packet delay, and the PCF network element supports monitoring of PDV and / or RTT, the PCF network element determines that it is necessary to request monitoring capability information of second QoS parameters other than PDV and / or RTT from the SMF network element, and therefore, the first indication information includes indication information other than the indication information of PDV and / or RTT among the indication information of multiple second QoS parameters. For example, multiple second QoS parameters include packet delay, PDV, and data rate, and when the PCF itself supports monitoring of PDV, it determines that it is necessary to request monitoring capability information of packet delay and data rate from the SMF, and therefore, the indication information of packet delay and the indication information of data rate can be carried in the first request.

[0189] In this implementation, if the AF network element requests monitoring capability for multiple second QoS parameters, and the multiple second QoS parameters include at least one of PDV, RTT and packet delay, and the PCF network element supports monitoring of PDV and / or RTT, the PCF decision needs to request the SMF network element to monitor the second QoS parameters other than PDV and / or RTT among the multiple second QoS parameters.

[0190] In another example, when the second indication information includes indication information of PDV and / or indication information of RTT, and the second indication information does not include indication information of packet delay, and the PCF network element supports monitoring of PDV and / or RTT, the PCF network element determines that it needs to request monitoring capability information of packet delay and monitoring capability information of second QoS parameters other than PDV and / or RTT from the SMF network element. Therefore, the first indication information includes indication information other than the indication information of PDV and / or RTT among the indication information of multiple second QoS parameters, and also includes indication information of packet delay, and the indication information of packet delay is determined by the PCF network element based on the indication information of PDV and / or RTT. For example, multiple second QoS parameters include PDV, RTT and data rate. When the PCF itself supports monitoring of PDV and RTT, it determines that it needs to request monitoring capability of packet delay and data rate from the SMF. Therefore, the indication information of packet delay and the indication information of data rate can be carried in the first request.

[0191] In this implementation, if the AF network element requests monitoring capability for multiple second QoS parameters, and the multiple second QoS parameters include PDV and / or RTT but do not include packet delay, and the PCF network element supports monitoring PDV and / or RTT, the PCF network element decides that it needs to request the monitoring capability of the second QoS parameters other than PDV and / or RTT among the multiple second QoS parameters from the SMF network element, and needs to request the monitoring capability of packet delay from the SMF network element.

[0192] In another example, when the second indication information includes indication information of PDV and / or indication information of RTT, and the PCF network element does not support monitoring of PDV and / or RTT, the PCF network element determines that it needs to request monitoring capability information of second QoS parameters other than PDV and / or RTT from the SMF network element among multiple second QoS parameters, and therefore, the first indication information includes indication information other than the indication information of PDV and / or RTT among the indication information of multiple second QoS parameters. For example, multiple second QoS parameters include PDV, RTT, and data rate, and the PCF determines that it needs to request monitoring capability information of data rate from the SMF when it does not support monitoring of PDV and RTT, and therefore, only the indication information of data rate may be carried in the first request.

[0193] In this implementation, if the AF requests monitoring capability for multiple second QoS parameters, and the multiple second QoS parameters include PDV and / or RTT, but the PCF network element does not support monitoring PDV and / or RTT, the PCF network element decides that it needs to request monitoring capability of the second QoS parameters other than PDV and / or RTT among the multiple second QoS parameters from the SMF network element.

[0194] 404: The PCF network element sends a first request to the SMF network element.

[0195] Correspondingly, the SMF network element receives a first request from the PCF network element, wherein the first request includes first indication information, the first indication information is used to request monitoring capability information of a first QoS parameter, and the first QoS parameter corresponds to the first indication information.

[0196] Exemplarily, the first request also includes third indication information of at least one third QoS parameter, and each third indication information of at least one third QoS parameter is used to request monitoring capability information of the corresponding third QoS parameter. That is, the PCF network element can request monitoring capability information of at least one QoS parameter from the SMF network element.

[0197] 405: The SMF network element sends a first message to the PCF network element.

[0198] Correspondingly, the PCF network element receives a first message from the SMF network element, wherein the first message is used to indicate monitoring capability information of the first QoS parameter, and the monitoring capability information of the first QoS parameter is used to indicate whether the network supports monitoring the first QoS parameter.

[0199] Exemplarily, the first message is also used to indicate monitoring capability information of at least one third QoS parameter, and the monitoring capability information of each third QoS parameter in the at least one third QoS parameter is used to indicate whether the network supports monitoring of the third QoS parameter.

[0200] 406: The PCF network element sends a second message to the AF network element.

[0201] Correspondingly, the AF network element receives a second message from the PCF network element, wherein the second message is used to indicate monitoring capability information of one or more second QoS parameters, and the monitoring capability information of one or more second QoS parameters is used to indicate whether the network supports monitoring of one or more second QoS parameters.

[0202] Specifically, when one or more second QoS parameters include PDV and / or RTT, and the PCF network element supports monitoring PDV and / or RTT, the PCF network element determines whether the network supports monitoring PDV and / or RTT based on whether the network supports monitoring packet delay in the first message. For example, the SMF network element indicates through a first message that the network supports monitoring packet delay, and the PCF network element can decide that the network supports monitoring PDV and / or RTT based on its own support for monitoring PDV and / or RTT and based on the network's support for monitoring packet delay, and indicates to the AF network element through a second message that the network supports monitoring PDV and / or RTT. If the SMF network element indicates through a first message that the network does not support monitoring packet delay, even though the PCF itself supports monitoring PDV and / or RTT, the PCF network element still decides that the network does not support monitoring PDV and / or RTT, and indicates to the AF network element through a second message that the network does not support monitoring PDV and / or RTT.

[0203] In this implementation, if the PCF network element supports monitoring PDV and / or RTT, it can determine whether the network supports monitoring PDV and / or RTT based on whether the network supports monitoring packet delay indicated by the first message sent by the SMF network element. If the AF network element requests the PCF network element for the monitoring capability of PDV and / or RTT, the PCF network element can indicate whether the network supports monitoring PDV and / or RTT through a second message.

[0204] Exemplarily, if one or more second QoS parameters do not include PDV and RTT, the PCF network element determines to send a second message to the AF network element based on whether the network indicated by the first message supports monitoring the one or more second QoS parameters, that is, the monitoring capability indicated by the second message is derived from the first message. For example, one or more second QoS parameters include packet delay and data rate, and the first message indicates that the network supports monitoring packet delay but does not support monitoring data rate. The PCF network element also indicates (or notifies) the AF through the second message that the network supports monitoring packet delay but does not support monitoring data rate. If one or more second QoS parameters include not only PDV and / or RTT, for the second QoS parameters other than PDV and / or RTT among the multiple second QoS parameters, the PCF network element determines to indicate to the AF network element through the second message whether the network supports monitoring the second QoS parameter based on whether the network indicated by the first message supports monitoring the second QoS parameter, that is, the monitoring capability of the second QoS parameter indicated by the second message is derived from the first message.

[0205] It should be understood that if the AF network element subscribes to a newly added QoS parameter monitoring capability event, the second message may be a notification or response to the QoS parameter monitoring capability event. If the AF network element subscribes to an enhanced existing QoS monitoring capability event, the second message may be a notification or response to the enhanced existing QoS monitoring capability event.

[0206] In an embodiment of the present application, the PCF network element can explicitly indicate which second QoS parameters the network supports monitoring and which second QoS parameters it does not support monitoring, such as carrying indication information of the second QoS parameters that the network does not support monitoring in the second message, and carrying indication information of the second QoS parameters that the network supports monitoring in the second message.

[0207] Exemplarily, the second message includes indication information of a target second QoS parameter that the network does not support monitoring among the one or more second QoS parameters, and / or the second message includes reason information of why the network does not support monitoring of the target second QoS parameter.

[0208] In an embodiment of the present application, the target second QoS parameter refers to the second QoS parameter that the network does not support monitoring as indicated by the second message. The PCF network element can use an explicit + implicit method to indicate which second QoS parameters the network supports monitoring and which second QoS parameters it does not support monitoring. For example, the second message carries the second indication information of the second QoS parameters that the network does not support monitoring or carries the reason information of the network not supporting monitoring of certain second QoS parameters in the second message (such as PCF does not support monitoring PDV). For certain second QoS parameters that the AF network element requests monitoring capability, if the second message does not carry the second indication information or reason information of the second QoS parameter, the AF network element can determine that the network supports monitoring the second QoS parameter (i.e., implicitly indicating). Exemplarily, if the second message does not carry any information, the AF network element can determine that the network supports monitoring of one or more requested second QoS parameters.

[0209] In this implementation, for the target second QoS parameters that have been decided not to be supported by the network for monitoring, the PCF network element may carry indication information of this type of second QoS parameters or carry reason information about the network not supporting this type of second QoS parameters in the second message, so as to indicate to the AF network element that the network does not support monitoring of this type of second QoS parameters, which is helpful in avoiding the AF network element from sending monitoring requests for this type of second QoS parameters.

[0210] See also Figure 5 , Figure 5 A flow chart of another communication method provided in an embodiment of the present application is shown as follows: Figure 5 As shown, the method may include steps 501-509:

[0211] 501: The AMF network element sends the third message to the SMF network element.

[0212] Correspondingly, the SMF network element receives a third message from the AMF network element. The third message is used to indicate the QoS parameter monitoring capability information of the RAN device. The QoS parameter monitoring capability information of the RAN device includes the monitoring capability information of the QoS parameter granularity, such as: not supporting monitoring of packet delay, supporting monitoring of data rate and congestion, etc.

[0213] 502: The SMF network element sends a fourth request to the UPF network element based on the QoS parameter monitoring capability information of the RAN device.

[0214] Correspondingly, the UPF network element receives the fourth request from the SMF network element. The fourth request is used to request the QoS parameter monitoring capability information of the user plane function network element. For example, if the third message indicates that the RAN device supports monitoring packet delay, the SMF requests the UPF network element whether it supports monitoring packet delay through the fourth request. If the RAN device does not support monitoring data rate, the SMF network element does not need to request the UPF network element whether it supports monitoring data rate.

[0215] In this implementation, the SMF network element can obtain the QoS parameter monitoring capability of the RAN device from the AMF network element, and decide which QoS parameter monitoring capabilities to request from the UPF network element based on the QoS parameter monitoring capability of the RAN device. For QoS parameters that the RAN device does not support monitoring, the SMF network element no longer needs to request its monitoring capability from the UPF, which is beneficial to reduce the signaling interaction between the SMF network element and the UPF network element.

[0216] 503: The SMF network element determines the QoS parameter monitoring capability of the network based on the QoS parameter monitoring capability information of the RAN device and the QoS parameter monitoring capability information of the UPF network element.

[0217] For example, if the RAN device supports monitoring packet delay, but the UPF network element does not support monitoring packet delay, the SMF network element decides that the network does not support monitoring and reporting packet delay. If the RAN device supports monitoring packet delay, and the UPF network element also supports monitoring packet delay, the SMF decides that the network supports monitoring and reporting packet delay. If the RAN device supports monitoring data rate, and the UPF network element also supports monitoring data rate, the SMF decides that the network supports monitoring and reporting data rate.

[0218] 504: The AF network element sends a second request to the PCF network element.

[0219] Correspondingly, the PCF network element receives a second request from the AF network element, wherein the second request includes second indication information of one or more second QoS parameters, and the second indication information of each second QoS parameter is used to request the monitoring capability information of the corresponding second QoS parameter, that is, to request whether the network supports monitoring of the one or more second QoS parameters.

[0220] Exemplarily, if the second request only includes PDV indication information and / or RTT indication information, and the PCF network element does not support monitoring PDV and / or RTT, step 505 is executed.

[0221] 505: The PCF network element sends a response message to the AF network element.

[0222] Correspondingly, the AF network element receives a response message from the PCF network element, wherein the response message is used to indicate that the network does not support monitoring of PDV and / or RTT.

[0223] Exemplarily, if the second request only includes PDV indication information and / or RTT indication information, and the PCF network element supports monitoring PDV and / or RTT, step 506 is executed; exemplary, if the second request does not only include PDV indication information and / or RTT indication information (regardless of whether the PCF supports monitoring PDV and / or RTT), step 506 is executed.

[0224] 506: The PCF network element determines the first indication information based on the second indication information of the one or more second QoS parameters.

[0225] In one example, when the second indication information only includes indication information of PDV and / or indication information of RTT, and the PCF network element supports monitoring of PDV and / or RTT, the PCF network element determines that it needs to request the monitoring capability of packet delay from the SMF network element, and therefore, the first indication information only includes indication information of packet delay.

[0226] In another example, when the second indication information includes indication information of PDV and / or indication information of RTT, and the second indication information includes indication information of packet delay, and the PCF network element supports monitoring of PDV and / or RTT, the PCF network element determines that it is necessary to request monitoring capability information of second QoS parameters other than PDV and / or RTT from the SMF network element, and therefore, the first indication information includes indication information other than the indication information of PDV and / or RTT among the indication information of multiple second QoS parameters. For example, multiple second QoS parameters include packet delay, PDV, and data rate, and when the PCF itself supports monitoring of PDV, it determines that it is necessary to request monitoring capability information of packet delay and data rate from the SMF, and therefore, the indication information of packet delay and the indication information of data rate can be carried in the first request.

[0227] In another example, when the second indication information includes indication information of PDV and / or indication information of RTT, and the second indication information does not include indication information of packet delay, and the PCF network element supports monitoring of PDV and / or RTT, the PCF network element determines that it needs to request monitoring capability information of packet delay and monitoring capability information of second QoS parameters other than PDV and / or RTT from the SMF network element. Therefore, the first indication information includes indication information other than the indication information of PDV and / or RTT among the indication information of multiple second QoS parameters, and also includes indication information of packet delay, and the indication information of packet delay is determined by the PCF network element based on the indication information of PDV and / or RTT. For example, multiple second QoS parameters include PDV, RTT and data rate. When the PCF itself supports monitoring of PDV and RTT, it determines that it needs to request monitoring capability of packet delay and data rate from the SMF. Therefore, the indication information of packet delay and the indication information of data rate can be carried in the first request.

[0228] In another example, when the second indication information includes indication information of PDV and / or indication information of RTT, and the PCF network element does not support monitoring of PDV and / or RTT, the PCF network element determines that it needs to request monitoring capability information of second QoS parameters other than PDV and / or RTT from the SMF network element among multiple second QoS parameters, and therefore, the first indication information includes indication information other than the indication information of PDV and / or RTT among the indication information of multiple second QoS parameters. For example, multiple second QoS parameters include PDV, RTT, and data rate, and the PCF determines that it needs to request monitoring capability information of data rate from the SMF when it does not support monitoring of PDV and RTT, and therefore, only the indication information of data rate may be carried in the first request.

[0229] 507: The PCF network element sends a first request to the SMF network element.

[0230] Correspondingly, the SMF network element receives the first request from the PCF network element.

[0231] The first request includes first indication information, where the first indication information is used to request monitoring capability information of a first QoS parameter, and the first QoS parameter corresponds to the first indication information.

[0232] Exemplarily, the first request also includes third indication information of at least one third QoS parameter, and each third indication information of at least one third QoS parameter is used to request monitoring capability information of the corresponding third QoS parameter. That is, the PCF network element can request monitoring capability information of at least one QoS parameter from the SMF network element.

[0233] Exemplarily, before step 507, the PCF may also send a third request to the UDM network element and / or the UDR network element, the third request being used to request the subscription information of the user corresponding to the AF network element, and the first request is sent by the PCF network element when the subscription information supports monitoring of QoS parameters. If the subscription does not support monitoring of QoS parameters, the PCF network element sends a response message to the AF network element to indicate that the network does not support monitoring of one or more second QoS parameters.

[0234] In this implementation method, the PCF network element can obtain the contract information of the user corresponding to the AF network element from the UDM network element and / or the UDR network element. If the contract information of the user supports monitoring of QoS parameters, the PCF network element decides that it needs to further send a request to the SMF network element; if the contract information of the user does not support monitoring of QoS parameters, the PCF network element will no longer send a request to the SMF network element, which is conducive to reducing the signaling interaction between the PCF network element and the SMF network element.

[0235] 508: The SMF network element sends a first message to the PCF network element.

[0236] Correspondingly, the PCF network element receives a first message from the SMF network element, wherein the first message is used to indicate monitoring capability information of the first QoS parameter, and the monitoring capability information of the first QoS parameter is used to indicate whether the network supports monitoring the first QoS parameter.

[0237] Exemplarily, the first message is also used to indicate monitoring capability information of at least one third QoS parameter, and the monitoring capability information of each third QoS parameter in the at least one third QoS parameter is used to indicate whether the network supports monitoring of the third QoS parameter.

[0238] 509: The PCF network element sends a second message to the AF network element.

[0239] Correspondingly, the AF network element receives a second message from the PCF network element, wherein the second message is used to indicate monitoring capability information of one or more second QoS parameters, and the monitoring capability information of one or more second QoS parameters is used to indicate whether the network supports monitoring of one or more second QoS parameters.

[0240] Exemplarily, the QoS parameter monitoring capability information of the RAN device may further include at least one of the following:

[0241] Whether the RAN device supports clock synchronization, the monitoring methods supported by the RAN device (such as periodic reporting or threshold triggering), and the maximum number of QoS flows that the RAN device supports monitoring.

[0242] The method may further include:

[0243] The SMF network element receives a QoS parameter monitoring request from the PCF network element, and determines whether to send a QoS parameter monitoring request to the RAN device based on at least one of whether the RAN device supports clock synchronization, the monitoring method supported by the RAN device, and the maximum number of QoS flows supported by the RAN device for monitoring.

[0244] For example, if the number of QoS flows currently monitored by the RAN device has reached the maximum number, the SMF network element decides that it does not need to send a QoS parameter monitoring request to the RAN device. For example, if the QoS parameter monitoring request sent by the PCF network element requires clock synchronization and periodic reporting, the SMF decides whether to send the QoS parameter monitoring request to the RAN device through the UPF network element based on whether the RAN device supports clock synchronization and periodic reporting.

[0245] In this implementation, when the SMF network element receives a QoS parameter monitoring request, it can determine whether to send a QoS parameter monitoring request to the RAN device through the UPF network element based on at least one of whether the RAN device supports clock synchronization sent by the AMF network element, the monitoring method supported by the RAN device, and the maximum number of QoS flows supported for monitoring by the RAN device, thereby helping to reduce the signaling interaction between the SMF network element and the UPF network element.

[0246] To better understand the communication method provided in the embodiment of the present application, the following briefly describes the overall process of the solution by taking the AF network element initiating a QoS parameter granularity monitoring capability request and the PCF network element responding to the request as an example. Figure 6 , Figure 6 The overall flow diagram of a communication method provided in an embodiment of the present application is as follows. Figure 6 As shown, the communication method includes the following steps:

[0247] 1: AMF sends RAN’s QoS parameter monitoring capability to SMF;

[0248] Among them, AMF can send this capability to SMF through Nsmf_PDUSession_CreateSMContext or Nsmf_PDUSession_UpdateSMContext message. Exemplarily, the RAN's QoS parameter monitoring capability includes the monitoring capability of QoS parameter granularity, such as the RAN's monitoring capability for each QoS parameter. The RAN's QoS parameter monitoring capability also includes whether the RAN supports clock synchronization, the monitoring types supported by the RAN, and the maximum number of QoS flows supported by the RAN for monitoring.

[0249] 2: SMF determines whether it needs to obtain the QoS parameter monitoring capability of UPF based on the QoS parameter monitoring capability of RAN;

[0250] For example, when RAN does not support monitoring packet delay, SMF does not need to query UPF whether UPF supports monitoring packet delay; when RAN supports monitoring packet delay, SMF needs to query UPF whether UPF supports monitoring packet delay.

[0251] 3: SMF sends a request to UPF to obtain the QoS parameter monitoring capability of UPF;

[0252] 4: SMF determines the network's QoS parameter monitoring capability based on the QoS parameter monitoring capability of the RAN and the QoS parameter monitoring capability of the UPF;

[0253] For example, if RAN supports monitoring packet delay, but UPF does not, then SMF decides that the network does not support monitoring and reporting packet delay. If RAN supports monitoring packet delay, and UPF also supports monitoring packet delay, then SMF decides that the network supports monitoring and reporting packet delay.

[0254] 5: If the AF is located in an untrusted domain, the AF sends a QoS parameter monitoring capability request to the NEF;

[0255] Among them, AF can send a QoS parameter monitoring capability request through the Nnef_AFsessionWithQoS_Create message to request whether the network supports specific QoS parameter monitoring, and the request can carry the corresponding QoS parameter indication information. Among them, the QoS parameter monitoring capability request can be an enhancement of the existing QoS monitoring capability event subscription / request of PCF, such as adding the indication information of the QoS parameters specifically requested by AF to the existing QoS monitoring capability event subscription / request. Among them, the QoS parameter monitoring capability request can also be a subscription / request for a newly added QoS parameter monitoring capability event in PCF, for example, a monitoring capability event can be added for each QoS parameter, and AF can subscribe to the monitoring capability event of a certain QoS parameter (carrying the indication information of the QoS parameter in the request), thereby requesting the monitoring capability of the QoS parameter.

[0256] 6: NEF sends a QoS parameter monitoring capability request from AF to PCF;

[0257] The NEF may send the QoS parameter monitoring capability request via the Npcf_PolicyAuthorization_Create message.

[0258] 7: If the AF is located in the trusted domain, the AF sends a QoS parameter monitoring capability request to the PCF;

[0259] Among them, the AF can send a QoS parameter monitoring capability request to the PCF through the Npcf_PolicyAuthorization_Create message.

[0260] 8: PCF obtains AF's subscription policy information from UDR and / or UDM;

[0261] Step 8 is optional. PCF can obtain the subscription policy information of AF from UDR through Nudr_DataRepository message. If the subscription policy information of AF does not support monitoring QoS parameters, step 9 (for the scenario where AF is located in a non-trusted domain) or step 11 (for the scenario where AF is located in a trusted domain) is executed.

[0262] 9: PCF sends a response message to NEF;

[0263] The response message may be an Npcf_PolicyAuthorization_Create response message, and the response message may carry a reason value for not supporting monitoring of QoS parameters and / or indication information of not supporting monitoring of QoS parameters. For example, the subscription policy information of the AF does not support monitoring of QoS parameters; for example, it carries indication information of all QoS parameters in the request submitted by the AF to indicate that monitoring of these QoS parameters is not supported.

[0264] 10: NEF sends a response message to AF;

[0265] The response message may be a Nnef_AFsessionWithQoS_Create response message, and the response message may carry a reason value for not supporting monitoring of QoS parameters and / or indication information for not supporting monitoring of QoS parameters.

[0266] 11: PCF sends a response message to AF;

[0267] The response message may be an Npcf_PolicyAuthorization_Create response message, and the response message may carry a reason value for not supporting monitoring of QoS parameters and / or indication information of not supporting monitoring of QoS parameters. For example, the subscription policy information of the AF does not support monitoring of QoS parameters; for example, it carries indication information of all QoS parameters in the request submitted by the AF to indicate that monitoring of these QoS parameters is not supported.

[0268] 12a: The QoS parameter monitoring capability request of the AF includes only PDV and / or RTT, and the PCF does not support monitoring of PDV and / or RTT. The PCF executes step 15 (for the scenario where the AF is located in the untrusted domain) or step 17 (for the scenario where the AF is located in the trusted domain).

[0269] 12b: The QoS parameter monitoring capability request of the AF includes only PDV and / or RTT, and the PCF supports monitoring of PDV and / or RTT. The PCF determines the indication information of the packet delay based on the indication information of the PDV and / or the indication information of the RTT, and executes step 13;

[0270] 12c: If the AF's QoS parameter monitoring capability request includes more than just PDV and / or RTT, the PCF executes step 13;

[0271] It should be understood that if there is no step 8, the PCF can directly execute step 12a, 12b or 12c (such as the subscription policy information of the AF supports QoS parameter monitoring by default) when receiving the QoS parameter monitoring capability request. If there is step 8, if the subscription policy information of the AF supports QoS parameter monitoring, step 12a, 12b or 12c is executed.

[0272] 13: PCF sends a QoS parameter monitoring capability request to SMF;

[0273] Among them, the PCF can send a QoS parameter monitoring capability request through the Npcf_SMPolicyControl message. The QoS parameter monitoring capability request can be an enhancement of the existing PCRT. For example, the PCRT is sent to instruct the SMF to send the monitoring capability of each QoS parameter or to instruct the SMF to send the monitoring capability of the QoS parameters requested by the PCF. Corresponding to step 12b, the QoS parameter monitoring capability request only includes the indication information of the packet delay; corresponding to step 12c, the QoS parameter monitoring capability request includes the indication information of the packet delay, and may also include the indication information of the QoS parameters requested by the AF other than PDV and / or RTT. Among them, if the QoS parameter monitoring capability request of the AF does not include the indication information of the packet delay, the indication information of the packet delay can be determined by the PCF based on the indication information of the PDV and / or the indication information of the RTT. If the QoS parameter monitoring capability request of the AF includes the indication information of the packet delay, the indication information of the packet delay in the QoS parameter monitoring capability request of the PCF comes from the QoS parameter monitoring capability request of the AF.

[0274] Among them, corresponding to adding a monitoring capability event for each QoS parameter in step 5, the QoS parameter monitoring capability request can also be a PCRT added for each QoS parameter. For example, for packet delay, PCF sends its corresponding PCRT to SMF to request the monitoring capability of packet delay from SMF; for data rate, PCF sends its corresponding PCRT to SMF to request the monitoring capability of data rate from SMF.

[0275] 14: SMF sends the monitoring capability of the QoS parameters requested by PCF to PCF;

[0276] For QoS parameters that the network does not support monitoring, the SMF may also send a reason value for not supporting monitoring of the QoS parameter, for example, the RAN does not support monitoring of packet delay, or the UPF does not support monitoring of packet delay, etc.

[0277] 15: PCF sends a response message to NEF;

[0278] The response message may be an Npcf_PolicyAuthorization_Create response message, which may carry a reason value and / or indication information that the network does not support monitoring of QoS parameters. For example, PCF does not support monitoring of PDV and / or RTT, and RAN does not support monitoring of packet delay.

[0279] 16: NEF sends a response message to AF;

[0280] The response message may be a Nnef_AFsessionWithQoS_Create response message, and the response message may carry a reason value indicating that the network does not support the monitored QoS parameters and / or indication information that the network does not support the monitored QoS parameters.

[0281] 17: PCF sends a response message to AF;

[0282] The response message may be an Npcf_PolicyAuthorization_Create response message, and the response message may carry a reason value that the network does not support the monitored QoS parameters and / or indication information that the network does not support the monitored QoS parameters.

[0283] The method of the embodiment of the present application is described above, and the communication system and device of the embodiment of the present application are provided below.

[0284] See also Figure 7 , Figure 7 A schematic diagram of a communication system provided in an embodiment of the present application. Figure 7 As shown, the communication system includes a PCF network element 701 and an SMF network element 702. Among them: PCF network element 701 is used to execute Figure 3-Figure 6 The steps implemented by the PCF network element in the communication method shown in the figure are performed by the SMF network element 702 Figure 3-Figure 6 The steps implemented by the SMF network element in the communication method shown, and the specific implementation and beneficial effects can be referred to Figure 3-Figure 6 The corresponding description in .

[0285] It should be noted that the communication system may also include more components, such as AMF network element, UPF network element, AF network element, NEF network element, etc. The above is only an example and does not limit the communication system of this application.

[0286] See also Figure 8 , Figure 8 A schematic diagram of the structure of a communication device provided in an embodiment of the present application. The device is applied to a policy control function network element, such as Figure 8 As shown, the device at least includes a first transceiver unit 801 and a first processing unit 802. Wherein:

[0287] The first transceiver unit 801 is used to send a first request to a session management function SMF network element, where the first request includes first indication information, where the first indication information is used to request monitoring capability information of a first quality of service QoS parameter, and the first QoS parameter corresponds to the first indication information; and receive a first message from the SMF network element, where the first message is used to indicate monitoring capability information of the first QoS parameter, and the monitoring capability information of the first QoS parameter is used to indicate whether the network supports monitoring of the first QoS parameter.

[0288] In a possible implementation, the first transceiver unit 801 is further configured to:

[0289] A second request is received, the second request includes second indication information, the second indication information is used to request monitoring capability information of a second QoS parameter, the second QoS parameter corresponds to the second indication information; the first indication information is determined by the communication device based on the second indication information.

[0290] In one possible implementation, when the second indication information only includes indication information of PDV and / or indication information of RTT and the PCF network element supports monitoring of PDV and / or RTT, the first indication information only includes indication information of packet delay, and the indication information of packet delay is determined by the communication device based on the indication information of PDV and / or indication information of RTT.

[0291] In a possible implementation manner, when the second indication information includes indication information of PDV and / or indication information of RTT, and the second indication information includes indication information of packet delay, and the PCF network element supports monitoring of PDV and / or RTT, the first indication information includes indication information other than the indication information of PDV and / or the indication information of RTT in the second indication information;

[0292] When the second indication information includes indication information of PDV and / or indication information of RTT, and the second indication information does not include indication information of packet delay, and the PCF network element supports monitoring of PDV and / or RTT, the first indication information includes indication information in the second indication information except the indication information of PDV and / or the indication information of RTT, and the first indication information includes indication information of packet delay, and the indication information of packet delay is determined by the communication device based on the indication information of PDV and / or the indication information of RTT.

[0293] In one possible implementation, when the second indication information includes indication information of PDV and / or indication information of RTT, and the PCF network element does not support monitoring of PDV and / or RTT, the first indication information includes indication information in the second indication information except for the indication information of PDV and / or the indication information of RTT.

[0294] In a possible implementation, the first processing unit 802 is configured to:

[0295] Whether the network supports monitoring PDV and / or RTT is determined based on whether the network supports monitoring packet delay in the first message.

[0296] In a possible implementation manner, the second request comes from the AF network element; and the first transceiver unit 801 is further configured to:

[0297] Sending a third request to the UDM network element and / or the UDR network element, where the third request is used to request the subscription information of the user corresponding to the AF network element;

[0298] The first request is sent by the communication device when the contract information supports monitoring of QoS parameters.

[0299] In a possible implementation, the first transceiver unit 801 is further configured to:

[0300] A second message is sent to the AF network element, where the second message is used to indicate monitoring capability information of the second QoS parameter, and the monitoring capability information of the second QoS parameter is used to indicate whether the network supports monitoring the second QoS parameter.

[0301] In a possible implementation manner, the second message includes indication information of the target second QoS parameter that the network does not support monitoring in the second QoS parameter, and / or the second message includes reason information of the target second QoS parameter that the network does not support monitoring.

[0302] It should be noted that Figure 8 The implementation of each unit described can also refer to Figures 3 to 6 The corresponding description of the embodiment shown. And, Figure 8 The beneficial effects brought by the described communication device can be referred to Figures 3 to 6The corresponding description of the illustrated embodiment will not be repeated here.

[0303] See also Fig. 9 , Fig. 9 A schematic diagram of the structure of another communication device provided in an embodiment of the present application. The device is applied to a session management function network element, such as Fig. 9 As shown, the device at least includes a second transceiver unit 901 and a second processing unit 902. Wherein:

[0304] The second transceiver unit 901 is used to receive a first request from a PCF network element, where the first request includes first indication information, where the first indication information is used to request monitoring capability information of a first quality of service QoS parameter, and the first QoS parameter corresponds to the first indication information; and send a first message to the PCF network element, where the first message is used to indicate the monitoring capability information of the first QoS parameter, and the monitoring capability information of the first QoS parameter is used to indicate whether the network supports monitoring the first QoS parameter.

[0305] In a possible implementation, the second transceiver unit 901 receives a third message from the AMF network element, where the third message is used to indicate QoS parameter monitoring capability information of the wireless access network device;

[0306] The second processing unit 902 is used to send a fourth request to the UPF network element based on the QoS parameter monitoring capability information of the wireless access network device, where the fourth request is used to request the QoS parameter monitoring capability information of the UPF network element.

[0307] In a possible implementation, the QoS parameter monitoring capability information of the radio access network device includes at least one of the following: whether the radio access network device supports clock synchronization, a monitoring mode supported by the radio access network device, and a maximum number of QoS flows supported by the radio access network device for monitoring;

[0308] The second transceiver unit 901 is further used to receive a QoS parameter monitoring request from a PCF network element;

[0309] The second processing unit 902 is also used to determine whether to send a QoS parameter monitoring request to the wireless access network device based on at least one of whether the wireless access network device supports clock synchronization, the monitoring method supported by the wireless access network device, and the maximum number of QoS flows supported by the wireless access network device for monitoring.

[0310] In one possible implementation, the first request is sent by the PCF network element when it receives the second request, the second request includes second indication information, the second indication information is used to request monitoring capability information of a second QoS parameter, and the second QoS parameter corresponds to the second indication information; the first indication information is determined by the PCF network element based on the second indication information.

[0311] In one possible implementation, when the second indication information only includes indication information of PDV and / or indication information of RTT and the PCF network element supports monitoring of PDV and / or RTT, the first indication information only includes indication information of packet delay, and the indication information of packet delay is determined by the PCF network element based on the indication information of PDV and / or indication information of RTT.

[0312] In a possible implementation manner, when the second indication information includes indication information of PDV and / or indication information of RTT, and the second indication information includes indication information of packet delay, and the PCF network element supports monitoring of PDV and / or RTT, the first indication information includes indication information other than the indication information of PDV and / or the indication information of RTT in the second indication information;

[0313] When the second indication information includes indication information of PDV and / or indication information of RTT, and does not include indication information of packet delay, and the PCF network element supports monitoring of PDV and / or RTT, the first indication information includes indication information in the second indication information except the indication information of PDV and / or the indication information of RTT, and the first indication information includes indication information of packet delay, and the indication information of packet delay is determined by the PCF network element based on the indication information of PDV and / or the indication information of RTT.

[0314] In one possible implementation, when the second indication information includes indication information of PDV and / or indication information of RTT, and the PCF network element does not support monitoring of PDV and / or RTT, the first indication information includes indication information in the second indication information except for the indication information of PDV and / or the indication information of RTT.

[0315] In a possible implementation manner, whether the network supports monitoring PDV and / or RTT is determined by the PCF network element based on whether the network supports monitoring packet delay in the first message.

[0316] In a possible implementation, the second request comes from the AF network element, and the first request is sent by the PCF network element when the subscription information of the user corresponding to the AF network element supports monitoring of QoS parameters.

[0317] It should be noted that Fig. 9 The implementation of each unit described can also refer to Figures 3 to 6 The corresponding description of the embodiment shown. And, Fig. 9 The beneficial effects brought by the described communication device can be referred to Figures 3 to 6 The corresponding description of the illustrated embodiment will not be repeated here.

[0318] Based on the description of the above method embodiment and device embodiment, the present application embodiment also provides a communication device. Fig.10 , Fig.10 A schematic diagram of the structure of a communication device provided in an embodiment of the present application, the communication device includes at least one processor 1001. Optionally, the communication device may further include an interface circuit 1002 (indicated by a dotted line in the figure), and the processor 1001 and the interface circuit 1002 are coupled to each other. It can be understood that the interface circuit 1002 can be a transceiver or an input-output interface. Optionally, the communication device may further include at least one memory 1003 (indicated by a dotted line in the figure), and the at least one memory 1003 is used to store instructions (such as one or more computer programs) executed by at least one processor 1001, or to store input data required for at least one processor 1001 to run instructions, or to store data generated after at least one processor 1001 runs instructions. The communication device can be used for related steps of the communication method. The at least one processor 1001 in the communication device is used to read the computer program code stored in the at least one memory 1003, and execute Figures 3 to 6 A method according to any one of the embodiments shown.

[0319] The at least one memory 1003 includes but is not limited to random access memory (RAM), read-only memory (ROM), erasable programmable read only memory (EPROM), or portable read only memory (CD-ROM).

[0320] The at least one processor 1001 may be one or more central processing units (CPUs). When the processor 1001 is a CPU, the CPU may be a single-core CPU or a multi-core CPU.

[0321] Exemplarily, when the communication device is used to implement the function of the policy control function network element, at least one processor 1001 in the communication device may be used to read one or more programs stored in the at least one memory 1003 and perform the following operations:

[0322] Sending a first request, the first request including first indication information, the first indication information being used to request monitoring capability information of a first quality of service QoS parameter, the first QoS parameter corresponding to the first indication information;

[0323] A first message is received, where the first message is used to indicate monitoring capability information of a first QoS parameter, and the monitoring capability information of the first QoS parameter is used to indicate whether the network supports monitoring the first QoS parameter.

[0324] Exemplarily, when the communication device is used to implement the function of the session management function network element, at least one processor 1001 in the communication device may be used to read one or more programs stored in the at least one memory 1003, and perform the following operations:

[0325] receiving a first request, the first request including first indication information, the first indication information being used to request monitoring capability information of a first quality of service QoS parameter, the first QoS parameter corresponding to the first indication information;

[0326] A first message is sent, where the first message is used to indicate monitoring capability information of a first QoS parameter, and the monitoring capability information of the first QoS parameter is used to indicate whether the network supports monitoring of the first QoS parameter.

[0327] It should be noted that the implementation of each operation can also refer to Figures 3 to 6 The corresponding description of the method of any one of the embodiments shown.

[0328] It should be noted that although Fig.10 The communication device shown only shows at least one processor 1001, an interface circuit 1002, and at least one memory 1003. However, in the specific implementation process, those skilled in the art should understand that the communication device also includes other devices necessary for normal operation. At the same time, according to specific needs, those skilled in the art should understand that the communication device may also include hardware devices for implementing other additional functions. In addition, those skilled in the art should understand that the communication device may also include only the devices necessary for implementing the embodiments of the present application, and does not necessarily include Fig.10 All devices shown in .

[0329] The present application also provides a chip, including: a processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes the above-mentioned Figures 3 to 6 The method according to any one of the embodiments. The chip may be a chip in a communication device.

[0330] The present application also provides a computer-readable storage medium (Memory), which stores a computer program. When the computer program is executed, the above-mentioned Figures 3 to 6The method described in any one of the embodiments. It can be understood that the computer-readable storage medium here can include both the built-in storage medium in the device and the extended storage medium supported by the device. The computer-readable storage medium provides a storage space, which stores the operating system of the device. In addition, one or more computer programs suitable for being loaded and executed by the processor of the device are also stored in the storage space. It should be noted that the computer-readable storage medium here can be a high-speed RAM or a non-volatile memory, such as at least one disk storage; optionally, it can also be at least one computer-readable storage medium located away from the aforementioned processor.

[0331] The embodiment of the present application further provides a computer program product, the computer program product comprising: a computer program code, when the computer program code is executed by a communication device, Figures 3 to 6 The method process described in any one of the embodiments is implemented.

[0332] See also Fig.11 , Fig.11 A schematic diagram of a baseband hardware provided in an embodiment of the present application. Fig.11 As shown, Baseband can be implemented with a processing system including one or more processors. The processor may include a microprocessor, a microcontroller, a CPU, a graphic processing unit (GPU), or other general-purpose processors, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), a programmable logic device (PLD), a state machine, a gating logic, discrete hardware circuits, and other suitable hardware configured for various functions. That is, the processor used in Baseband can be used to implement any one or more of the processes and procedures described below. It should be understood that Fig.10 The communication device shown may be Fig.11 Baseband shown.

[0333] A processing system may be implemented using a bus architecture, typically represented by a bus. A bus may include any number of interconnecting buses and bridges, depending on the specific application and overall design constraints of the processing system. A bus couples various circuits together, including one or more processors (typically represented by a processor), memory, and computer-readable media (typically represented by a computer-readable storage medium). The bus may also link various other circuits, such as timing sources, peripherals, voltage regulators, and power management circuits, which are well known in the art and will not be described in detail here. A bus interface provides an interface between a bus and a transceiver and between a bus and an interface.

[0334] The transceiver provides a communication interface or means for communicating with various other devices via a wireless transmission medium. The transceiver can be coupled to an antenna array, and the transceiver and antenna array can be used together to communicate with a corresponding network type. At least one interface (e.g., a network interface and / or a user interface) provides a communication interface or means for communicating via an internal bus or via an external transmission medium.

[0335] The processor is responsible for managing the bus and general processing, including executing software stored on a computer-readable storage medium. When the software is executed by the processor, the software causes the processing system to perform the various functions described below for any specific device. The functions that can be implemented by the processor, memory, and computer-readable medium may be: encoding, decoding, rate matching, rate dematching, scrambling, descrambling, modulation, demodulation, layer mapping, fast Fourier transform (FFT), inverse fast Fourier transform (IFFT), inverse discrete Fourier transform (IDFT), precoding, resource element (RE) mapping, channel equalization, deRE mapping, digital beam forming (BF), etc.

[0336] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0337] It should be understood that the processor mentioned in the embodiments of the present application may be a CPU, or other general-purpose processors, DSPs, ASICs, FPGAs or other PLDs, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0338] It should also be understood that the memory mentioned in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a ROM, a programmable read-only memory (Programmable ROM, PROM), an EPROM, an electrically erasable programmable read-only memory (ElectricallyEPROM, EEPROM) or a flash memory. The volatile memory may be a RAM, which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (Synchlink DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DRRAM).

[0339] It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, the memory (storage module) is integrated in the processor.

[0340] It should be noted that the memory described herein is intended to include, without being limited to, these and any other suitable types of memory.

[0341] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0342] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely exemplary. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0343] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0344] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. If the above integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a computer-readable storage medium.

[0345] In this application, "at least one" means one or more, and "more" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. In the text description of this application, the character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0346] The steps in the method of the embodiment of the present application can be adjusted in order, combined and deleted according to actual needs.

[0347] The modules in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.

[0348] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A communication method, characterized in that: The method comprises: Sending a first request, where the first request includes first indication information, where the first indication information is used to request monitoring capability information of a first quality of service QoS parameter, where the first QoS parameter corresponds to the first indication information; A first message is received, where the first message is used to indicate monitoring capability information of the first QoS parameter, and the monitoring capability information of the first QoS parameter is used to indicate whether a network supports monitoring of the first QoS parameter.

2. The method according to claim 1, characterized in that The method is applied to a policy control function network element; the method also includes: Receive a second request, the second request includes second indication information, the second indication information is used to request monitoring capability information of a second QoS parameter, the second QoS parameter corresponds to the second indication information; the first indication information is determined by the policy control function network element based on the second indication information.

3. The method according to claim 2, characterized in that When the second indication information only includes indication information of PDV and / or indication information of RTT and the policy control function network element supports monitoring of the PDV and / or the RTT, the first indication information only includes indication information of packet delay, and the indication information of packet delay is determined by the policy control function network element based on the indication information of the PDV and / or the indication information of the RTT.

4. The method according to claim 2, characterized in that: In the case where the second indication information includes indication information of PDV and / or indication information of RTT, and the second indication information includes indication information of packet delay, and the policy control function network element supports monitoring of the PDV and / or the RTT, the first indication information includes indication information in the second indication information except the indication information of the PDV and / or the indication information of the RTT; When the second indication information includes indication information of PDV and / or indication information of RTT, and does not include indication information of packet delay, and the policy control function network element supports monitoring of the PDV and / or the RTT, the first indication information includes indication information in the second indication information except the indication information of the PDV and / or the indication information of the RTT, and the first indication information includes indication information of packet delay, and the indication information of packet delay is determined by the policy control function network element based on the indication information of the PDV and / or the indication information of the RTT.

5. The method according to claim 2, characterized in that: When the second indication information includes indication information of PDV and / or indication information of RTT, and the policy control function network element does not support monitoring of the PDV and / or the RTT, the first indication information includes indication information in the second indication information except the indication information of the PDV and / or the indication information of the RTT.

6. The method according to claim 3 or 4, characterized in that: The method further comprises: Whether the network supports monitoring the PDV and / or the RTT is determined based on whether the network supports monitoring the packet delay indicated by the first message.

7. The method according to any one of claims 2 to 6, characterized in that: The second request comes from an application function network element; the method further includes: Sending a third request, where the third request is used to request the contract information of the user corresponding to the application function network element; The first request is sent by the policy control function network element when the subscription information supports monitoring of QoS parameters.

8. The method according to claim 7, characterized in that The method further comprises: A second message is sent to the application function network element, where the second message is used to indicate monitoring capability information of the second QoS parameter, and the monitoring capability information of the second QoS parameter is used to indicate whether the network supports monitoring of the second QoS parameter.

9. The method according to claim 8, characterized in that The second message includes indication information of a target second QoS parameter that the network does not support monitoring in the second QoS parameter, and / or the second message includes reason information of why the network does not support monitoring the target second QoS parameter.

10. A communication method, characterized in that: The method comprises: receiving a first request, the first request comprising first indication information, the first indication information being used to request monitoring capability information of a first quality of service QoS parameter, the first QoS parameter corresponding to the first indication information; A first message is sent, where the first message is used to indicate monitoring capability information of the first QoS parameter, and the monitoring capability information of the first QoS parameter is used to indicate whether the network supports monitoring of the first QoS parameter.

11. The method according to claim 10, characterized in that The method further comprises: receiving a third message, where the third message is used to indicate QoS parameter monitoring capability information of the wireless access network device; A fourth request is sent based on the QoS parameter monitoring capability information of the wireless access network device, where the fourth request is used to request the QoS parameter monitoring capability information of the user plane function network element.

12. The method according to claim 11, characterized in that The QoS parameter monitoring capability information of the wireless access network device includes at least one of the following: whether the wireless access network device supports clock synchronization, the monitoring mode supported by the wireless access network device, and the maximum number of QoS flows supported by the wireless access network device for monitoring; The method further comprises: Receiving QoS parameter monitoring request; Determine whether to send the QoS parameter monitoring request to the wireless access network device based on at least one of whether the wireless access network device supports clock synchronization, the monitoring method supported by the wireless access network device, and the maximum number of QoS flows supported by the wireless access network device for monitoring.

13. The method according to any one of claims 10 to 12, characterized in that: The first request is sent by the policy control function network element when it receives the second request, the second request includes second indication information, the second indication information is used to request monitoring capability information of a second QoS parameter, and the second QoS parameter corresponds to the second indication information; the first indication information is determined by the policy control function network element based on the second indication information.

14. The method according to claim 13, characterized in that When the second indication information only includes indication information of PDV and / or indication information of RTT and the policy control function network element supports monitoring of the PDV and / or the RTT, the first indication information only includes indication information of packet delay, and the indication information of packet delay is determined by the policy control function network element based on the indication information of the PDV and / or the indication information of the RTT.

15. The method according to claim 13, characterized in that In the case where the second indication information includes indication information of PDV and / or indication information of RTT, and the second indication information includes indication information of packet delay, and the policy control function network element supports monitoring of the PDV and / or the RTT, the first indication information includes indication information in the second indication information except the indication information of the PDV and / or the indication information of the RTT; When the second indication information includes indication information of PDV and / or indication information of RTT, and does not include indication information of packet delay, and the policy control function network element supports monitoring of the PDV and / or the RTT, the first indication information includes indication information in the second indication information except the indication information of the PDV and / or the indication information of the RTT, and the first indication information includes indication information of packet delay, and the indication information of packet delay is determined by the policy control function network element based on the indication information of the PDV and / or the indication information of the RTT.

16. The method according to claim 13, characterized in that When the second indication information includes indication information of PDV and / or indication information of RTT, and the policy control function network element does not support monitoring of the PDV and / or the RTT, the first indication information includes indication information in the second indication information except the indication information of the PDV and / or the indication information of the RTT.

17. The method according to claim 14 or 15, characterized in that Whether the network supports monitoring the PDV and / or the RTT is determined by the policy control function network element based on whether the network supports monitoring the packet delay indicated by the first message.

18. The method according to any one of claims 13 to 17, characterized in that: The second request comes from an application function network element, and the first request is sent by the policy control function network element when the subscription information of the user corresponding to the application function network element supports monitoring of QoS parameters.

19. A communication system, characterized in that: It comprises a policy control function network element and a session management function network element; wherein the policy control function network element is used to execute the method as described in any one of claims 1-9; and the session management function network element is used to execute the method as described in any one of claims 10-18.

20. A communication device, characterized in that: The method comprises a module for executing the method as claimed in any one of claims 1 to 9; or the method comprises a module for executing the method as claimed in any one of claims 10 to 18.

21. A communication device, characterized in that: The device comprises at least one processor, wherein the at least one processor is coupled to at least one memory, wherein the at least one memory is used to store one or more computer programs; the at least one processor is configured to enable the communication device to implement the method as described in any one of claims 1-9 or claims 10-18 when executing the one or more computer programs.

22. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program for execution by a device, and when the computer program is executed, the method according to any one of claims 1 to 9 or claims 10 to 18 is implemented.

23. A computer program product, characterized in that When the computer program product is executed by a device, the device executes the method according to any one of claims 1 to 9 or claims 10 to 18.

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