US 11,700,649 B2
Method and apparatus for supporting network connection of terminal in next generation mobile communication system
Donggun Kim, Suwon-si (KR); and Soenghun Kim, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on May 9, 2019, as Appl. No. 16/407,646.
Claims priority of application No. 10-2018-0053520 (KR), filed on May 10, 2018; and application No. 10-2018-0063771 (KR), filed on Jun. 1, 2018.
Prior Publication US 2019/0350015 A1, Nov. 14, 2019
Int. Cl. H04W 76/10 (2018.01); H04W 76/11 (2018.01); H04W 8/26 (2009.01); H04W 84/04 (2009.01)
CPC H04W 76/10 (2018.02) [H04W 8/26 (2013.01); H04W 76/11 (2018.02); H04W 84/042 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A terminal in a wireless communication system, the terminal comprising:
a transceiver; and
a controller configured to:
receive, from a base station via the transceiver, system information indicating whether a cell of the base station is connected to an evolved packet core (EPC) or connected to a 5th generation (5G) core (5GC),
identify whether to connect to the EPC or the 5GC based on the system information,
in case of connecting to the 5GC based on a result of the identification,
transmit, to the base station via the transceiver, a first message for requesting radio resource control (RRC) connection establishment, wherein the first message includes a first part of a first identifier of the terminal, and the first identifier of the terminal has been assigned to the terminal from the 5GC,
receive, from the base station via the transceiver, a second message for the RRC connection establishment as a response to the first message, and
transmit, to the base station via the transceiver, a third message for confirming the RRC connection establishment as a response to the second message, wherein the third message includes a second part of the first identifier of the terminal, and wherein the first identifier consists of the first part of the first identifier and the second part of the first identifier, and in case of connecting to the EPC based on the result of the identification,
transmit, to the base station via the transceiver, a fourth message for requesting the RRC connection establishment, wherein the fourth message includes a third identifier of the terminal, and the third identifier of the terminal has been assigned to the terminal from the EPC,
receive, from the base station via the transceiver, a fifth message for the RRC connection establishment as a response to the fourth message, and
transmit, to the base station via the transceiver, a sixth message for confirming the RRC connection establishment as a response to the fifth message, wherein the sixth message for confirming the RRC connection establishment is different from the third message for confirming the RRC connection establishment.