Terminal position management method under relay node

The invention discloses a terminal position management method under a relay node, which defines a tracking area updating process of a user terminal under the relay node RN as follows: user equipment (UE) sends a Tracking Area Update Request message to the relay node RN, and the relay node RN embeds an IMSI_RN (International Mobile Subscriber Identity Request) of the relay node RN at the tail of the TAU Request message and forwards the IMSI_RN to a core network; and after the core network receives the TAU Request forwarded by the relay node RN, a corresponding location area code is checked when the user terminal sends the location area, and when the location area code is dedicated to the relay node RN, namely belongs to a set {TAC_RN}, the IMSI_RN at the tail part of the TAU Request is taken out and recorded by the core network. The actual position area of the terminal under the relay node can be obtained in real time, and more signaling processes are not added to an existing system. 本发明公开了一种中继节点下终端位置管理方法，定义中继