Mobile communication system

摘要

A mobile communication system capable of continuing communication between a relay device and a base station device if the relay device moves. In a handover process, when it is judged that an establishment cause for RRC connection is attached from an RN, a target eNB judges whether the own device has the DeNB function. In a case of judging that the own device does not have the DeNB function, the target eNB notifies the RN of an RRC connection rejection. When being notified of the RRC connection reject, the RN stops the handover process and then returns to a source eNB.

主权项

1. A mobile communication system comprising:
a movable user equipment device; a plurality of base station devices configured to perform radio communication with said user equipment device; a mobility management entity that controls said plurality of base station devices; and a relay device movably configured to relay radio communications between said user equipment device and said base station devices, wherein in a handover process of switching a base station device to be connected with said relay device, while said relay device is in a state allowing communication with the movable user equipment device, from a base station device being a moving source to a base station device being a moving destination along with moving of said relay device, said base station device being the moving destination notifies said mobility management entity of an initial message from the movable user equipment device to which an IP address is not mapped in a case where the own base station device does not have a function supporting said relay device, said base station device being the moving destination receives an instruction to reject the connection request from said mobility management entity, and said base station device being the moving destination notifies the relay device that the connection request is rejected after receiving the instruction to reject the connection request from said mobility management entity.