Method, device, and communication system for establishing connection with network management system

摘要

The present disclosure relates to the field of communications technologies and discloses a method, a device, and a communication system for establishing a connection with a network management system. The method includes: obtaining, by a relay node, a first IP address of the relay node; obtaining, by the relay node, an IP address of a security gateway by using the first IP address of the relay node; establishing, by the relay node, an IP security tunnel with the security gateway according to the IP address of the security gateway; obtaining, by the relay node, a second IP address of the relay node and an IP address of the network management system through the IP security tunnel; and establishing, by the relay node, a connection with the network management system by using the second IP address of the relay node and the IP address of the network management system.

主权项

1. A method for establishing a packet data network connection for a relay node, comprising:
receiving, by a mobile management entity (MME), when the relay node accesses a network, subscription data of the relay node, wherein the subscription data comprises information for instructing selection of a packet data network gateway (P-GW) for the relay node; and selecting, by the MME, a P-GW for serving the relay node according to the subscription data; wherein the method further comprises: transmitting, by the MME, a session establishment request to the selected P-GW, wherein the session establishment request comprises an access point name (APN), and the APN comprises a network management service label, wherein the network management service label is used for the P-GW to establish a packet data network (PDN) connection for the relay node; wherein the information for instructing the selection of the P-GW for the relay node comprises a fully qualified domain name, wherein the fully qualified domain name comprises a hostname of the P-GW, wherein the hostname includes a P-GW information identifier and a public land mobile network (PLMN) where the P-GW is located; and wherein the selecting, by the MME, the P-GW for serving the relay node according to the subscription data comprises: receiving, by the MME, an IP address of the fully qualified domain name through a domain name server (DNS) and using the IP address as an address of the P-GW for serving the relay node.