Route delivery method and device

A route delivery method, wherein the method comprises:

• receiving, by a control plane network element device, a location information of a user equipment (UE), and determining, based on the location information, a location area to which the UE belongs;
• sending, by the control plane network element device, information about the location area to a user plane network element device, so that the user plane network element device determines, based on the information about the location area, a client IP address used by the user plane network element device to access a third-party server;
• receiving, by the control plane network element device, a UE Internet Protocol (IP) address sent by the user plane network element device, wherein the UE IP address is assigned by the third-party server based on the client IP address when the user plane network element device accesses the third-party server by using the client IP address;
• and
• determining, by the control plane network element device based on the UE IP address and the information about the location area, another user plane network element device configured to deliver a route to the UE.

A route delivery method, wherein the method comprises:

• receiving, by a user plane network element device, information about a location area sent by a control plane network element device;
• determining, by the user plane network element device based on the information about the location area, a client Internet Protocol (IP) address used by the user plane network element device to access a third-party server;
• sending, by the user plane network element device, an access request message to the third-party server carrying the client IP address;
• receiving, by the user plane network element device, a user equipment (UE) IP address assigned by the third-party server to the UE based on the client IP address;
• and
• sending, by the user plane network element device, the UE IP address to the control plane network element device, so that the control plane network element device determines, based on the UE IP address and the information about the location area, another user plane network element device configured to deliver a route to the UE.

A control plane network element device, comprising:

• at least one processor;
• and
• a non-transitory computer-readable storage medium coupled to the at least one processor and storing one or more instructions that when executed by the at least one processor, cause the control plane network element device to perform operations comprising:
• receiving a location information of a user equipment (UE);
• determining based on the location information, a client Internet Protocol (IP) address used by the control plane network element device to access a third-party server;
• and
• sending an access request message to the third-party server carrying the client IP address;
• receiving a UE IP address assigned by the third-party server to the UE based on the client IP address;
• and
• determining based on the UE IP address and the location information, a user plane network element device configured to deliver a route to the UE.