Communication Method and Apparatus

A method, comprising:

• sending, by a terminal device, a first request to a first core network element when determining that a network does not meet a transmission requirement of service data, wherein the first request comprises one or more of an application identifier, service status information, or a service indicator, wherein the application identifier identifies an application to which the service data belongs, the service status information represents a transmission status of the service data, and the service indicator represents the transmission requirement of the service data;
• receiving, by the terminal device, a recovery policy from the first core network element, wherein the recovery policy enables the network to meet the transmission requirement of the service data;
• and
• executing, by the terminal device, the recovery policy.

A communication method, comprising:

• receiving, by a first core network element, a first request from a terminal device, wherein the first request comprises one or more of an application identifier or service status information, the application identifier identifies an application to which service data belongs, and the service status information represent a transmission status of the service data;
• sending, by the first core network element, a second request to a network data analytics function (NWDAF) network element, wherein the second request comprises one or more of the application identifier or the service status information;
• receiving, by the first core network element, network transmission information from the NWDAF network element, wherein the network transmission information represents a transmission status of a network that provides a service for the terminal device;
• generating, by the first core network element, a recovery policy based on the network transmission information, wherein the recovery policy enables the network that provides a service for the terminal device to meet a transmission requirement of the service data;
• and
• sending, by the first core network element, the recovery policy to a device to execute the recovery policy, wherein the device that executes the recovery policy is the terminal device or a first access network device accessed by the terminal device.

A method, comprising:

• receiving, by a network data analytics function (NWDAF) network element, a first request, wherein the first request comprises one or more of an application identifier, service status information, or a service indicator, the application identifier identifies an application to which service data belongs, the service status information represents a transmission status of the service data, and the service indicator represents a transmission requirement of the service data;
• obtaining, by the NWDAF network element, network transmission information based on the first request, wherein the network transmission information represents a transmission status of a network that provides a service for a terminal device;
• generating, by the NWDAF network element, a recovery policy based on the network transmission information, wherein the recovery policy enables the network that provides a service for the terminal device to meet the transmission requirement of the service data;
• and
• sending, by the NWDAF network element, the recovery policy to a device to execute the recovery policy, wherein the device that executes the recovery policy is the terminal device or an access network device accessed by the terminal device.

An apparatus, comprising:

• a memory;
• a processor;
• and
• a transceiver;
• wherein the memory is configured to store computer instructions;
• wherein the transceiver is configured to receive and send information;
• and
• wherein the processor is coupled to the memory, and is configured to invoke the computer instructions in the memory, to enable the apparatus to perform the method according to claim 1.