Device and method for maintaining service connection by terminal in wireless communication system

Patent metadata

Field	Value
Publication number	US-2017245180-A1
Application number	US-201515508075-A
Country	US
Kind code	A1
Filing date	Aug 27, 2015
Priority date	Sep 1, 2014
Publication date	Aug 24, 2017
Grant date	—

Abstract

The disclosure relates to a 5G or a pre-5G communication system which will be provided to support a higher data transmission rate after a 4G communication system such as LTE. The present invention provides a method for providing a service by a target base station in a wireless communication system, the method comprising: when the target base station supports an on-going service, which is the same service as a service currently received by a terminal from a source base station, transmitting, to a base station server, a service registration update request message requesting a re-establishment of a first bearer provided between the source base station and the base station server connected to the source base station; receiving, from the base station server, a service registration update response message indicating that the re-establishment of the first bearer is accepted; and receiving data related to a service, provided from the base station server, through the first bearer re-established between the target base station and the base station server, and transmitting the data to the terminal.

First claim

1 . A method for providing a service by a target base station in a wireless communication system, the method comprising:
if a terminal supports an on-going service that is a same service as that currently provided by a source base station, transmitting to the base station server, by the target base station, a service registration update request message that includes a request for re-establishment of a first bearer provided between the source base station and a base station server connected with the source base station; receiving, from the base station server, a service registration update response message indicating that re-establishment of the first bearer is accepted; and receiving, through the first bearer re-established between the target base station and the base station server, data associated with a service provided by the base station server so as to transmit the same data to the terminal.

2 . The method of claim 1 , further comprising:
if the target base station does not support the on-going service and receives a service from an Internet server, wherein the on-going service is a service that requires session continuity, receiving, from the source base station, a bearer setup request message requesting establishment of a second bearer provided between the target base station and the source base station; transmitting, to the source base station, a bearer setup response message indicating that the establishment of the second bearer is accepted and establishing the second bearer; and receiving, through the second bearer, data associated with a service provided by the base station server so as to transmit the same data to the terminal.

3 . The method of claim 1 , further comprising, if the target base station does not support the on-going service and receives a service from an Internet server, wherein the on-going service is a service that does not require session continuity, receiving data associated with a service provided by the Internet server so as to transmit the same data to the terminal.

4 . The method of claim 1 , further comprising:
if the target base station does not support the on-going service and receives a service from the base station server, wherein the on-going service is a service that requires session continuity, receiving, from the source base station, a bearer setup request message requesting establishment of a second bearer provided between the target base station and the source base station; transmitting, to the source base station, a bearer setup response message indicating that the establishment of the second bearer is accepted and establishing the second bearer; and receiving, through the second bearer, data associated with a service provided by the base station server so as to transmit the same data to the terminal.

5 . The method of claim 1 , further comprising, if the on-going service is not supported and a service is received from the base station server, wherein the on-going service is a service that does not require session continuity, receiving data associated with a service provided by an Internet server so as to transmit the same data to the terminal.

6 . The method of claim 1 , further comprising:
receiving, from the source base station, at least one of information associated with a general context or information associated with a low latency context so as to store the same information, wherein the information associated with the general context is used for receiving data associated with the service provided from an Internet server, and the information associated with the low latency context is used for receiving data associated with the service provided from the base station server.

7 - 10 . (canceled)

11 . A method for receiving a service by a terminal in a wireless communication system, the method comprising:
if a handover command message including information associated with a target base station, to which a handover is performed, is received from a source base station, performing the handover to the target base station; and if the target base station supports an on-going service that is a same service as that provided by the source base station, receiving, through a first bearer re-established between the target base station and the base station server, data associated with a service provided by a base station server connected with the target base station.

12 . The method of claim 11 , further comprising, if the target base station does not support the on-going service and the on-going service is a service that requires session continuity, receiving, through a second bearer established between the source base station and the target base station, data associated with the service provided by the base station server.

13 . The method of claim 11 , further comprising, if the target base station does not support the on-going service and the on-going service is not a service that requires session continuity, receiving data associated with a service provided by an Internet server.

14 . (canceled)

15 . The method of claim 2 , further comprising:
receiving, from the source base station, information associated with a general context so as to store the same, wherein the information associated with the general context is used for receiving data associated with the service provided by the Internet server.

16 . A target base station for providing a service in a wireless communication system, the target base station comprising:
a transceiver; and a controller configured to control the transceiver to:
if the target base station supports an on-going service that is a same service as that currently provided by a terminal from a source base station, transmit a service update request message for requesting re-establishment of a first bearer provided between the source base station and a base station server connected with the source base station,
receive, through the first bearer re-established between the target base station and the base station server, data associated with a service provided by the base station server so as to transmit the same data to the terminal; and
receive, from the base station server, a service registration update response message for indicating that re-establishment of the first bearer is accepted.

17 . The target base station of claim 16 , wherein the controller is further configured to:
if the target base station does not support the on-going service and receives a service from an Internet server, wherein the on-going service is a service that requires session continuity, receive, from the source base station, a bearer setup request message requesting establishment of a second bearer provided between the target base station and the source base station; transmit, to the source base station, a bearer setup response message indicating that the establishment of the second bearer is accepted and establishing the second bearer; and receive, through the second bearer, data associated with a service provided by the base station server so as to transmit the same data to the terminal.

18 . The target base station of claim 16 , wherein the controller is further configured to control the transceiver to, if the target base station does not support the on-going service and receives a service from an Internet server, wherein the on-going service is a service that does not require session continuity, receive data associated with a service provided by the Internet server so as to transmit the same data to the terminal.

19 . The target base station of claim of claim 16 , wherein the controller is further configured to control the tr

Assignees

• Samsung Electronics Co Ltd

Inventors

• Lim Han-Na
• Park Jung-Shin
• Lee Jin-Sung

Classifications

• H04W36/0033 Primary

  with transfer of context information · CPC title

• H04W92/20

  between access points · CPC title

• H04W36/0061

  of neighbour cell information · CPC title

• H04W76/10

  Connection setup · CPC title

• H04W76/19

  Connection re-establishment · CPC title