公开(公告)号：US20200305019A1

公开(公告)日：2020-09-24

申请号：US16362572

申请日：2019-03-22

Applicant: Apple Inc.

Inventor： Sai Sravan Bharadwaj Karri ,  Sethuraman Gurumoorthy ,  Sree Ram Kodali ,  Stephen C. Schweizer ,  Alexander Allahverdiev ,  Murtaza A. Shikari ,  Srirang A. Lovlekar ,  Vijay Venkataraman ,  Wanping Zhang ,  Yifan Zhu

IPC: H04W28/02 ,  H04L29/06 ,  H04W24/02

Abstract: Apparatuses, systems, and methods for improving efficiency in IMS registration and management in a wireless communication device, such as a UE. In some scenarios, the UE may, while implementing IMS services (e.g. for VoLTE) over a wireless communication link with a cellular network, determine that the wireless communication link is not performing at an acceptable level. In response, the UE may start a timer and buffer IMS SIP signaling messages while the timer is running. If the wireless communication link performance is restored to an acceptable level before expiration of the timer, the UE may transmit the buffered IMS SIP signaling messages. If the timer expires prior to restoration of the wireless communication link, the buffered messages may be cleared, and the UE may locally deregister from IMS registration and IMS PDN. In some scenarios, select IMS SIP signaling messages may be omitted or removed from the buffer.

公开(公告)号：US11064383B2

公开(公告)日：2021-07-13

申请号：US16362572

申请日：2019-03-22

Applicant: Apple Inc.

Inventor： Sai Sravan Bharadwaj Karri ,  Sethuraman Gurumoorthy ,  Sree Ram Kodali ,  Stephen C. Schweizer ,  Alexander Allahverdiev ,  Murtaza A. Shikari ,  Srirang A. Lovlekar ,  Vijay Venkataraman ,  Wanping Zhang ,  Yifan Zhu

IPC: H04W28/02 ,  H04L29/06 ,  H04W24/02

Abstract: Apparatuses, systems, and methods for improving efficiency in IMS registration and management in a wireless communication device, such as a UE. In some scenarios, the UE may, while implementing IMS services (e.g. for VoLTE) over a wireless communication link with a cellular network, determine that the wireless communication link is not performing at an acceptable level. In response, the UE may start a timer and buffer IMS SIP signaling messages while the timer is running. If the wireless communication link performance is restored to an acceptable level before expiration of the timer, the UE may transmit the buffered IMS SIP signaling messages. If the timer expires prior to restoration of the wireless communication link, the buffered messages may be cleared, and the UE may locally deregister from IMS registration and IMS PDN. In some scenarios, select IMS SIP signaling messages may be omitted or removed from the buffer.