US 11,700,526 B2
Method and apparatus for identifying in-call capability features
Chandrashekhar Byadgi, Bangalore (IN); Vijetha Bhyrappa, Bangalore (IN); Akhil Goel, Bangalore (IN); and Ashish Anand, Bangalore (IN)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Appl. No. 17/251,173
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
PCT Filed Jun. 12, 2019, PCT No. PCT/KR2019/007079
§ 371(c)(1), (2) Date Dec. 10, 2020,
PCT Pub. No. WO2019/240487, PCT Pub. Date Dec. 19, 2019.
Claims priority of application No. 201841021986 (IN), filed on Jun. 12, 2018; and application No. 201841021986 (IN), filed on Jun. 10, 2019.
Prior Publication US 2021/0219131 A1, Jul. 15, 2021
Int. Cl. H04W 8/24 (2009.01); H04L 65/1069 (2022.01); H04L 65/1096 (2022.01); H04L 69/24 (2022.01); H04L 65/1073 (2022.01); H04L 65/1083 (2022.01); H04L 65/1104 (2022.01)
CPC H04W 8/24 (2013.01) [H04L 65/1069 (2013.01); H04L 65/1073 (2013.01); H04L 65/1083 (2013.01); H04L 65/1096 (2013.01); H04L 65/1104 (2022.05); H04L 69/24 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of identifying in-call capability features performed by a mobile originated (MO) device, the method comprising:
transmitting, to a mobile terminated (MT) device, a call request message, wherein the call request message includes information regarding the in-call capability features of the MO device,
wherein in case that the MO device and the MT device support that at least one voice over long term evolution (VOLTE) based service and at least one rich communication suite (RCS) based service are provided on a single packet data network (PDN) the information regarding in-call capability features is included in a contact header of the call request message, and
wherein in case that at least one of the MO device, or the MT device supports that the at least VOLTE based service and the at least one RCS based service are provided on two different PDNs, the information regarding in-call capability features is included in a session initiation protocol (SIP) private extension header of the call request message;
receiving, from the MT device, a call response message based on the call request message, wherein the call response message includes information regarding in-call capability features of the MT device; and
performing in-call capability negotiation with the MT device based on the call request message and the call response message.