Mobile communication system
AssigneeMitsubishi Electric Corporation
InventorsMitsuru MOCHIZUKI, Miho MAEDA, Shinsuke UGA
Life of this patent
Estimating the term…
Abstract
The present invention has an object to provide a mobile communication system capable of performing communication between a user equipment device connected to a relay device and a core network if the relay device moves. An RN (1508) sets a TA of an eNB to be connected with the own device as a TA of the own device. For example, when the RN (1508) moves along an arrow (1500), the TA of the RN (1508) is changed from a first TA (1601) to which a fourth eNB (1525) belongs to a third TA (1602) to which a tenth eNB (1505) belongs. Upon change of the TA of the RN (1508) as described above, a user equipment device (UE; 1509) transmits a TA update request signal of the own device to a target second MME (1501).
Claims5
(canceled)
A mobile communication system comprising:
- a plurality of base station devices to be connected to a core network;
- a user equipment device configured to perform radio communications with said base station devices;
- and
- a mobile relay device movably configured to relay said radio communications between said base station devices and said user equipment device, wherein
- said core network includes a mobility management entity that manages said base station devices, said user equipment device, and said mobile relay device per predetermined tracking area,
- a mobile relay device tracking area of said mobile relay device is not changed as a result of moving of said mobile relay device,
- said mobility management entity includes:
- a first mobility management entity that manages a mobility of said user equipment device being served by said base station devices per said predetermined tracking area;
- and
- a second mobility management entity that manages only said mobile relay device tracking area among a plurality of tracking areas and manages a mobility of said user equipment device being served by said mobile relay device.
Dependencies are inferred from the claim text.