公开(公告)号：US11555792B2

公开(公告)日：2023-01-17

申请号：US16536266

申请日：2019-08-08

Applicant: Apple Inc.

Inventor： Vijendrakumar K. Ashiwal ,  Sireesha Ramisetti ,  Chia-Chi Chen ,  Vusthla Sunil Reddy ,  Peter M. Agboh

IPC: G01N22/00 ,  G01N33/00 ,  G01S13/88

Abstract: Embodiments are disclosed for terahertz spectroscopy and imaging in dynamic environments. In an embodiment, a method comprises using a sensor of an electronic device to determine an orientation of the electronic device. A transmitter of the electronic device emits an electromagnetic (EM) wave in a terahertz (THz) frequency band into a dynamic environment according to a power duty cycle that is determined at least in part by the orientation. A receiver of the electronic device receives a reflected EM wave from the environment. A spectral response of the reflected EM wave is determined that includes absorption spectra that is indicative of the transmission medium in the environment. The absorption spectra are compared with known absorption spectra of target transmission mediums. Based on the comparing, a particular target transmission medium is identified as being the transmission medium in the environment, and a concentration level of the identified target transmission medium in the environment is determined.

公开(公告)号：US11039297B1

公开(公告)日：2021-06-15

申请号：US16802139

申请日：2020-02-26

Applicant: Apple Inc.

Inventor： Sweta B. Desai ,  Abhishek Walia ,  Ajoy K. Singh ,  Bhanu Prasad Pamidi ,  Rohit Thareja ,  Sharad Garg ,  Vijay Gadde ,  Vijendrakumar K. Ashiwal

IPC: H04W36/00 ,  H04B1/38 ,  H04W8/18 ,  H04W88/06 ,  H04L29/06 ,  H04M7/00 ,  H04W4/16 ,  H04W48/18

Abstract: Apparatuses, systems, and methods for enhancement of Wi-Fi calling for DSDS user equipment devices (UEs). The UE may register a first connection supported by a first SIM with IMS for VoWiFi based on a determination to prefer VoWiFi for the first SIM. The first SIM may be associated with a first subscription to a first RAN. The UE may include a second SIM that may be associated with a second subscription to a second RAN. The UE may register a second connection associated with the second SIM with the IMS for VoWiFi and/or VoLTE and initiate/receive, via the first connection supported by the first SIM, a VoWiFi call. A recommendation to handover the VoWiFi call from Wi-Fi to cellular data may be received and, based, at least in part, on the recommendation, the UE may register a second connection associated with the second SIM for IWLAN over cellular data.

公开(公告)号：US20210041295A1

公开(公告)日：2021-02-11

申请号：US16536265

申请日：2019-08-08

Applicant: Apple Inc.

Inventor： Sireesha Ramisetti ,  Chia-Chi Chen ,  Vusthla Sunil Reddy ,  Peter M. Agboh ,  Vijendrakumar K. Ashiwal

IPC: G01J3/433 ,  G01N21/3581

Abstract: Embodiments of a terahertz (THz) sensor module are disclosed for spectroscopy and imaging in a dynamic environment. In an embodiment, a terahertz (THz) sensor module comprises: a THz emitter configured to emit a THz beam into an environment; one or more movable micro-electromechanical system (MEMS) micromirrors; and one or more MEMS motors or actuators coupled to the one or more MEMS micromirrors. The one or more MEMS motors or actuators are configured to move the one or more MEMS micromirrors to change a direction of the THz beam in the environment. A THz receiver is configured to receive a reflection of the THz beam from a reflective object in the environment.

公开(公告)号：US11513004B2

公开(公告)日：2022-11-29

申请号：US16536233

申请日：2019-08-08

Applicant: Apple Inc.

Inventor： Chia-Chi Chen ,  Vusthla Sunil Reddy ,  Sireesha Ramisetti ,  Peter M. Agboh ,  Mohit Narang ,  Vijendrakumar K. Ashiwal

IPC: G01J3/42 ,  G01N21/3581

Abstract: Embodiments are disclosed for terahertz spectroscopy and imaging in dynamic environments. In an embodiment, a transmitter of an electronic device emits a continuous electromagnetic (EM) wave in the terahertz (THz) frequency band into a dynamic environment that includes a transmission medium that changes over time. A receiver of the electronic device, receives an EM wave reflected off an object in the environment and determines a spectral response of the reflected EM wave. The spectral response includes absorption spectra at a frequency in the THz frequency band that is indicative of a known target transmission medium. The absorption spectra of the target transmission medium and a path length of the reflected EM wave signal are used to obtain the concentration level of the target transmission medium from a reference library of known concentration levels.

公开(公告)号：US20210041292A1

公开(公告)日：2021-02-11

申请号：US16536233

申请日：2019-08-08

Applicant: Apple Inc.

Inventor： Chia-Chi Chen ,  Vusthla Sunil Reddy ,  Sireesha Ramisetti ,  Peter M. Agboh ,  Mohit Narang ,  Vijendrakumar K. Ashiwal

IPC: G01J3/42 ,  G01N21/3581

Abstract: Embodiments are disclosed for terahertz spectroscopy and imaging in dynamic environments. In an embodiment, a transmitter of an electronic device emits a continuous electromagnetic (EM) wave in the terahertz (THz) frequency band into a dynamic environment that includes a transmission medium that changes over time. A receiver of the electronic device, receives an EM wave reflected off an object in the environment and determines a spectral response of the reflected EM wave. The spectral response includes absorption spectra at a frequency in the THz frequency band that is indicative of a known target transmission medium. The absorption spectra of the target transmission medium and a path length of the reflected EM wave signal are used to obtain the concentration level of the target transmission medium from a reference library of known concentration levels.

公开(公告)号：US20200091989A1

公开(公告)日：2020-03-19

申请号：US16136031

申请日：2018-09-19

Applicant: Apple Inc.

Inventor： Vijendrakumar K. Ashiwal ,  Dikshit Garg ,  Vijay Gadde ,  Sharad Garg ,  Jia Tang ,  Zhu Ji ,  Mohit Narang ,  Tiberiu Muresan

IPC: H04B7/08 ,  H04B7/0404 ,  H04W36/00 ,  H04W36/30

Abstract: The present disclosure relates to opportunistically selecting an antenna in an electronic device having multiple antennas. A baseband processor of the electronic device may connect to a first cellular tower providing cellular service at a first frequency using a first antenna of the electronic device. The baseband processor may then receive an indication of a handover event to a second cellular tower operating at a second frequency. The baseband processor may determine signal measurements of the second cellular tower for each antenna of the electronic device that is capable of operating at the second frequency. The baseband processor may execute a handover to the second cellular tower using the antenna associated with the best performing signal measurements. In this manner, an antenna may be opportunistically selected based on performance of the antenna, improving operation of the electronic device and quality of cellular service.

公开(公告)号：US20230397095A1

公开(公告)日：2023-12-07

申请号：US17830194

申请日：2022-06-01

Applicant: Apple Inc.

Inventor： Bharath Jayaram ,  Ajoy K. Singh ,  Vijay Gadde ,  Sharad Garg ,  Vijay Venkataraman ,  Sandeep K. Sunkesala ,  Sanjeevi Balasubramanian ,  Vijendrakumar K. Ashiwal

IPC: H04W48/18 ,  H04W24/08 ,  H04W8/18

CPC classification number: H04W48/18 ,  H04W24/08 ,  H04W8/18

Abstract: A device executing a low-latency application that uses a Wi-Fi link may switch from the Wi-Fi link to using a second link to a multi-subscriber (MSIM) PHS device. The device may access, via the second link, any one of multiple cellular links, each cellular link corresponding to a different respective cellular subscription of multiple subscriptions used by the PHS device. The application executing on the device may thus use a preferred cellular link from among the multiple cellular links. The preferred cellular link may be determined based on parameters corresponding to the plurality of cellular links for each respective cellular subscription. The parameters may be obtained from a location database. The preferred cellular link (which may presently correspond to a primary subscription) on the PHS device may be switched to be a different cellular link (which may correspond to a non-primary subscription) during execution of the application on the device.

公开(公告)号：US11099072B2

公开(公告)日：2021-08-24

申请号：US16536245

申请日：2019-08-08

Applicant: Apple Inc.

Inventor： Sireesha Ramisetti ,  Chia-Chi Chen ,  Vijendrakumar K. Ashiwal ,  Peter M. Agboh ,  Vusthla Sunil Reddy

IPC: G01J3/42 ,  G01N21/3581

Abstract: Embodiments are disclosed for terahertz spectroscopy and imaging in dynamic environments. In an embodiment, a method comprises emitting a continuous electromagnetic (EM) wave in a terahertz (THz) frequency band into a dynamic environment. The EM THz wave is reflected off an object in the environment. A spectral response of a received signal indicative of the reflected EM wave is determined that includes absorption spectra at a frequency in the THz frequency band. The absorption spectra is indicative of a transmission medium in the environment. The spectral response of the received signal is compensated for fixed and frequency-specific losses. The compensated absorption spectra is compared with known absorption spectra of target transmission mediums. Based on results of the comparing, a particular target transmission medium is identified as being the transmission medium in the environment. The absorption spectra loss is used to determine a concentration level of the target transmission medium.

公开(公告)号：US20210041376A1

公开(公告)日：2021-02-11

申请号：US16536266

申请日：2019-08-08

Applicant: Apple Inc.

Inventor： Vijendrakumar K. Ashiwal ,  Sireesha Ramisetti ,  Chia-Chi Chen ,  Vusthla Sunil Reddy ,  Peter M. Agboh

IPC: G01N22/00

Abstract: Embodiments are disclosed for terahertz spectroscopy and imaging in dynamic environments. In an embodiment, a method comprises using a sensor of an electronic device to determine an orientation of the electronic device. A transmitter of the electronic device emits an electromagnetic (EM) wave in a terahertz (THz) frequency band into a dynamic environment according to a power duty cycle that is determined at least in part by the orientation. A receiver of the electronic device receives a reflected EM wave from the environment. A spectral response of the reflected EM wave is determined that includes absorption spectra that is indicative of the transmission medium in the environment. The absorption spectra are compared with known absorption spectra of target transmission mediums. Based on the comparing, a particular target transmission medium is identified as being the transmission medium in the environment, and a concentration level of the identified target transmission medium in the environment is determined.

公开(公告)号：US12284703B2

公开(公告)日：2025-04-22

申请号：US17805434

申请日：2022-06-03

Applicant: Apple Inc.

Inventor： Vijendrakumar K. Ashiwal ,  Bharath Jayaram ,  Sandeep K. Sunkesala ,  Sanjeevi Balasubramanian ,  Sharad Garg ,  Vijay Gadde ,  Vijay Venkataraman ,  Weidong Yang

IPC: H04W76/15 ,  H04W72/21 ,  H04W72/23 ,  H04W72/54 ,  H04W72/566

Abstract: This application describes methods and apparatus to manage data transport across multiple radio links for 5G-capable wireless devices. Under certain criteria, including performance of at least one radio link, a mobility state of a 5G-capable wireless device, and data transport requirements for a latency sensitive application session, the 5G-capable wireless device sends buffer status report (BSR) requests for one or more both of the radio links to prioritize and transition uplink (UL) data between radio links before a measurement reporting threshold is met. In some embodiments, the 5G-capable wireless device proactively sends BSR requests for radio resources before the UL data is generated by the latency sensitive application session. In some embodiments, the 5G-capable wireless device duplicates UL data for the latency sensitive application session across multiple radio links.