SUB-CHANNEL SELECTION BASED ON TRANSMIT POWER
    61.
    发明申请
    SUB-CHANNEL SELECTION BASED ON TRANSMIT POWER 审中-公开
    基于发射功率的子频道选择

    公开(公告)号:US20160249361A1

    公开(公告)日:2016-08-25

    申请号:US14850834

    申请日:2015-09-10

    Applicant: Apple Inc.

    Abstract: In order to improve the quality of communication between electronic devices, one or more sub-channels used during communication between the electronic devices are dynamically modified based on one or more performance metrics and allowed transmit powers of the sub-channels. In particular, when the one or more performance metrics indicate that a distance between the electronic devices falls within a mid-range of distances, the one or more performance metrics may be used to guide selective changes to the sub-channels used during the communication based on the allowed transmit powers. The changes to the sub-channels used during the communication may increase, decrease or leave the total bandwidth unchanged. Moreover, by changing the sub-channels used during the communication, the allowed transmit power(s) of the sub-channel(s) used may be increased, which may improve the performance during the communication.

    Abstract translation: 为了提高电子设备之间的通信质量,基于一个或多个性能度量和子信道的允许发送功率动态地修改在电子设备之间通信期间使用的一个或多个子信道。 特别地,当一个或多个性能度量指示电子设备之间的距离落在距离的中间范围内时,可以使用一个或多个性能度量来指导在基于通信期间使用的子信道的选择性改变 关于允许的发射功率。 在通信期间使用的子信道的改变可以增加,减少或保持总带宽不变。 此外,通过改变在通信期间使用的子信道,可以增加所使用的子信道的允许发送功率,这可以提高通信期间的性能。

    Terahertz spectroscopy and imaging in dynamic environments with spectral response enhancements

    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.

    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.

    Ultra Wideband Range Extension
    69.
    发明申请

    公开(公告)号:US20210051532A1

    公开(公告)日:2021-02-18

    申请号:US16540301

    申请日:2019-08-14

    Applicant: Apple Inc.

    Abstract: Methods and apparatuses are presented to locate a wireless communication device. A target device may be out of range of a source device for normal ranging communications according to a first radio access technology (RAT), such as ultra wideband (UWB) communications. A source device may therefore modify communications according to the first RAT, to increase the transmit power, while removing the data payload. The target device may utilize the signal strength and angle of arrival of the modified communications to guide the user to move toward the source device, e.g., until the target device is within range to perform normal ranging communications. A second RAT, such as Bluetooth, may be used to communicate between the two devices while the target device is out of range of the first RAT. For example, the target device may use the second RAT to communicate to the source device to start/stop transmitting modified communications.

    TERAHERTZ SPECTROSCOPY AND IMAGING IN DYNAMIC ENVIRONMENTS WITH PERFORMANCE ENHANCEMENTS USING AMBIENT SENSORS

    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.

    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.

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