公开(公告)号：US20240323768A1

公开(公告)日：2024-09-26

申请号：US18732213

申请日：2024-06-03

Applicant: Apple Inc.

Inventor： Shangfeng LI ,  Zhiwei WANG ,  Qiang MIAO ,  Li YAN ,  Ying ZHANG ,  Gaohong ZHOU

IPC: H04W36/00 ,  H04W36/30 ,  H04W88/06

CPC classification number: H04W36/00222 ,  H04W36/0058 ,  H04W36/30 ,  H04W88/06

Abstract: Embodiments described herein relate to managing access to 5G cellular baseband resources for 5G-capable wireless devices. A 5G-capable wireless device of an MNO, while connected to or camped on a legacy 4G LTE cell of the MNO and not engaged in a 4G only LTE service, determines whether an NSA 5G cell of another MNO satisfies performance criteria before measuring and/or sending measurement data for an NSA 4G LTE anchor cell associated with the NSA 5G cell to a wireless network. Refraining from measuring and/or sending measurement data under certain conditions causes the 5G-capable wireless device of the MNO to remain connected to or camped on the legacy 4G LTE cell of the MNO rather than reselecting or handing over to the NSA 4G LTE cell of another MNO. The 5G-capable wireless device also maintains a database of information for valid NSA 4G LTE cells to which to reselect/handover.

公开(公告)号：US20180255594A1

公开(公告)日：2018-09-06

申请号：US15755360

申请日：2015-08-28

Applicant: APPLE INC.

Inventor： Huarui LIANG ,  Dawei ZHANG ,  Shangfeng LI ,  Hao SUN ,  Zhiwei WANG

IPC: H04W76/12 ,  H04L29/06 ,  H04W76/27

CPC classification number: H04W76/12 ,  H04L12/66 ,  H04L65/1006 ,  H04L65/1016 ,  H04L65/1069 ,  H04L65/1073 ,  H04L65/80 ,  H04W76/10 ,  H04W76/27

Abstract: A device, system, and method performs a Voice over Long Term Evolution (LTE) (VoLTE) call setup procedure. The device includes a transceiver establishing a connection with a LTE network and an Internet Protocol (IP) Multimedia Subsystem (IMS). The device includes a processor executing a VoLTE call application with a further user equipment, receiving an input to execute the VoLTE call application, and generating a data packet including an indication to trigger a dedicated bearer establishment procedure. The transceiver transmits the data packet to one of the LTE network and the IMS. The indication triggers the dedicated bearer establishment procedure to be performed during a Session Initiation Protocol (SIP) signal exchange procedure.