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：US20230036406A1

公开(公告)日：2023-02-02

申请号：US17807021

申请日：2022-06-15

Applicant: Apple Inc.

Inventor： Lijie ZHANG ,  Lele CUI ,  Aiman J. SANG ,  Yu WU ,  Yun GAO ,  Ying ZHANG ,  Zhiwei WANG ,  Qiang MIAO

IPC: H04L5/00 ,  H04W72/02 ,  H04W72/04 ,  H04W72/08 ,  H04B17/318 ,  H04B17/336

Abstract: Aspects are described for a user equipment (UE) comprising a transceiver configured to enable wireless communication with a base station; and a processor communicatively coupled to the transceiver. The processor is configured to receive a sounding reference signal (SRS) resource configuration from the base station, wherein the SRS resource configuration indicates at least a first SRS resource and a second SRS resource. The processor is further configured to transmit a first SRS via the first SRS resource to the base station using a first antenna coupled to the transceiver and transmit a second SRS via the second SRS resource to the base station using a second antenna coupled to the transceiver. The processor is further configured to receive an SRS resource indicator (SRI) from the base station based on at least one of the transmission of the first SRS or the second SRS; select the first antenna based on the SRI indicating the first SRS resource; and transmit uplink data to the base station using the first antenna.