SERVER DEVICE AND TERMINAL DEVICE
First Claim
1. A server device adapted to:
- receive a routing-information update request message transmitted by a second terminal device, which performs communication with a first terminal device through a core network, from the first terminal device,the routing-information update request message including at least identification information indicating that switching of a communication is required;
select a third terminal device having a relay function, based on the identification information; and
transmit a routing update instruction message which is a response to the routing-information update request message, and includes information of the third terminal device, to the first terminal device, and perform an instruction of performing a direct communication with the third terminal device by using LTE, so as to communicate with the first terminal device.
1 Assignment
0 Petitions
Accused Products
Abstract
A server device or a terminal device can perform switching of a path or a communication channel between an infrastructure communication through a network such as an EPC, and a Relay communication through a direct communication with a Relay UE, and can continuously provide a service. A routing information request message includes at least identification information indicating that switching of a communication is required. A third terminal device having a relay function is selected based on the routing information request message. A routing update instruction message which is a response to the routing information request message and includes information of the third terminal device is transmitted to the first terminal device. A direct communication with the third terminal device is performed by using LTE, so as to perform an instruction of communicating with the first terminal device. Thus, a communication channel is switched.
30 Citations
5 Claims
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1. A server device adapted to:
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receive a routing-information update request message transmitted by a second terminal device, which performs communication with a first terminal device through a core network, from the first terminal device, the routing-information update request message including at least identification information indicating that switching of a communication is required; select a third terminal device having a relay function, based on the identification information; and transmit a routing update instruction message which is a response to the routing-information update request message, and includes information of the third terminal device, to the first terminal device, and perform an instruction of performing a direct communication with the third terminal device by using LTE, so as to communicate with the first terminal device. - View Dependent Claims (2)
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3. A server device adapted to:
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lead switching between a first communication in which a communication with a first terminal device is performed through a core network of a second terminal device, and a second communication in which the second terminal device performs a direct communication with a third terminal device so as to communicate with the first terminal device; select the third terminal device having a relay function; and transmit a routing update instruction message including information of the third terminal device, to the second terminal device, and perform an instruction of switching to the second communication. - View Dependent Claims (4)
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5. A first terminal device which performs a communication with a second terminal device through a core network, the device adapted to:
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transmit a routing-information update request message including at least identification information, to a server device by detecting a trigger of switching of a path, the identification information indicating that switching of a communication is required; receive a routing update instruction message including information of a third terminal device which has been selected by the server device and has a relay function, from the server device; and perform a direct communication with the third terminal device in accordance with the routing update instruction message by using LTE, so as to communicate with the second terminal device.
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Specification