The embodiment of the invention discloses a method for establishing and using a direct forwarding tunnel, a system and a device, relating to the field of wireless communication technology and reducing data allocation in a core network device. In the invention, the source node determines the target access network access network node, the target node and the source access network access network node using RAT different wireless access technologies; GTP tunnel path information source access network node to node sends the target access network access to the target access network node request message; source access network node based on GTP tunneling path to obtain information, to initiate the process of establishing the target access network node forwarding tunnel. The invention can effectively reduce the data configuration in the core network equipment.
【技术实现步骤摘要】
【技术保护点】
一种直接转发隧道的建立方法，其特征在于，该方法包括： 源接入网节点确定目标接入网节点，目标接入网节点与源接入网节点使用不同的无线接入技术ＲＡＴ； 源接入网节点向目标接入网节点发送获取目标接入网节点的通用分组无线业务隧道协议ＧＴＰ隧道路径信息的请求消息； 源接入网节点根据获取到的ＧＴＰ隧道路径信息，发起到目标接入网节点的直接转发隧道的建立过程。
【技术特征摘要】
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