Patent ID: 8913624

Claim:
An interface information synchronization method, comprising: receiving, by a second radio access network (RAN) node, interface information sent by a first RAN node through an X2 interface, wherein the interface information is sent by the first RAN node when a condition for sending interface information is fulfilled, the interface information including information indicating an S1 interface exists between the first RAN node and a core network node, wherein the X2 interface is between the first RAN node and the second RAN node, the condition for sending interface information includes at least one of a change in configuration of the first RAN node, a change in state of interface of the first RAN node and the first RAN node being restarted; and updating, by the second RAN node, interface information of the first RAN node in accordance with the received S1 interface information when previous S1 interface information of the first RAN node existed in second RAN node, or, configuring, by the second RAN node, interface information of the first RAN node in accordance with the received S1 interface information when no previous S1 interface information of the first RAN node existed in the second RAN node.