Mobile communication system
First Claim
1. 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 relay device movably configured to relay said radio communications between said base station devices and said user equipment device, whereinsaid core network includes a mobility management entity that manages said base station devices, said user equipment device, and said relay device per predetermined tracking area,said relay device sets, as a relay device tracking area of said relay device, a base station device tracking area of a base station device that is connected to said relay device belongs, andupon judging that said relay device tracking area has changed when said relay device is connected to said user equipment device, said user equipment device transmits a user equipment device tracking area update request signal for updating a user equipment device tracking area of said user equipment device to said mobility management entity via said relay device whose relay device tracking area has changed.
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Accused Products
Abstract
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. A relay device sets a tracking area of a base station device to be connected with the own device as a tracking area of the own device. For example, when the relay device moves along an arrow, the tracking area of the relay device is changed from a first tracking area to which a fourth base station device belongs to a third tracking area to which a tenth base station device belongs. Upon change of the tracking area of the relay device as described above, a user equipment device transmits a tracking area update request signal of the own device to a target second mobility management entity.
21 Citations
5 Claims
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1. 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 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 relay device per predetermined tracking area, said relay device sets, as a relay device tracking area of said relay device, a base station device tracking area of a base station device that is connected to said relay device belongs, and upon judging that said relay device tracking area has changed when said relay device is connected to said user equipment device, said user equipment device transmits a user equipment device tracking area update request signal for updating a user equipment device tracking area of said user equipment device to said mobility management entity via said relay device whose relay device tracking area has changed.
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3. 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 communication with said base station devices, and a 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 relay device per predetermined tracking area, upon judging that a base station tracking area of a base station device connected to said relay device has changed, said relay device transmits a relay device tracking area update request signal for updating a relay device tracking area of said relay device to said mobility management entity, upon receipt of said relay device tracking area update request signal from said relay device, said mobility management entity initiates and performs a process of updating said relay device tracking area, and upon receipt of said relay device tracking area update request signal from said relay device, said mobility management entity initiates and performs a process of updating a user equipment device tracking area of said user equipment device.
Specification