公开(公告)号：US10720978B1

公开(公告)日：2020-07-21

申请号：US16573507

申请日：2019-09-17

Applicant: Apple Inc.

Inventor： Yakun Sun ,  Rohit U. Nabar ,  Jennifer M. Edwards ,  Simone Paulotto ,  Mithat C. Dogan ,  Harish Rajagopalan

IPC: H04B7/06 ,  H04B7/0426 ,  H04B7/0417 ,  H04B17/336 ,  H04B17/318

Abstract: Methods and systems include reducing or mitigating interference by sweeping multiple beams used to communicate between a wireless network base station and an electronic device. The multiple beams include beams having different sidelobe directions. The electronic device selects, using a processor of the electronic device, a beam from the multiple beams. Furthermore, selecting the beam includes selecting the beam having a lowest level of interference of the multiple beams due to a sidelobe direction of the beam. The electronic device then communicates with the wireless network base station using the selected beam.

公开(公告)号：US20200178261A1

公开(公告)日：2020-06-04

申请号：US16701045

申请日：2019-12-02

Applicant: Apple Inc.

Inventor： Anatoliy S. Ioffe ,  Ehsan Haghani ,  Yakun Sun ,  Rohit U. Nabar ,  Rodney A. Gomez Angulo

IPC: H04W72/08 ,  H04W72/04 ,  H04W24/10 ,  H04L1/18

Abstract: An electronic device may be provided with wireless circuitry and control circuitry. The wireless circuitry may communicate using a 5G New Radio (NR) protocol. The wireless circuitry may have multiple bandwidth part configurations. The control circuitry may place the wireless circuitry in a first bandwidth part configuration where a first bandwidth part of a first component carrier is active and a second bandwidth part of a second component carrier is inactive. The control circuitry may switch the wireless circuitry from the first bandwidth part configuration to a second bandwidth part configuration in which the first bandwidth part is inactive and the second bandwidth part is active. The first and second component carriers may be intra-band contiguous, intra-band non-contiguous, or inter-band. The control circuitry may switch the wireless circuitry into other configurations for covering other bandwidth parts of any desired component carriers in any desired bands.

公开(公告)号：US20200100125A1

公开(公告)日：2020-03-26

申请号：US16142008

申请日：2018-09-26

Applicant: Apple Inc.

Inventor： Ye Sun ,  Zhanfeng Jia ,  Yakun Sun

IPC: H04W24/06 ,  H04W28/02

Abstract: An interface circuit in an electronic device may provide rate feedback. During operation the interface circuit may transmit one or more packets or frames associated with a data stream that are intended for the recipient electronic device, where the data stream is associated with a video encoder. Then, the interface circuit may estimate a communication performance metric associated with at least the transmissions. For example, the estimated communication performance metric comprises an effective capacity associated with a wireless link between the electronic device and the recipient electronic device. Moreover, the effective capacity may be estimated based at least in part on an efficiency of the wireless link. Next, the interface circuit may provide the rate feedback intended for the video encoder based at least in part on the estimated communication performance metric. In some embodiments, when beamforming occurs, the rate feedback may be reset.

公开(公告)号：US20200099596A1

公开(公告)日：2020-03-26

申请号：US16139751

申请日：2018-09-24

Applicant: Apple Inc.

Inventor： Ye Sun ,  Yakun Sun ,  Zhanfeng Jia

IPC: H04L12/24 ,  H04L12/26 ,  H04L29/06 ,  H04L1/00

Abstract: An interface circuit in an electronic device may perform wireless link adaptation. During operation the interface circuit may transmit at least two data streams, where a first data stream of at least the two data streams has a higher quality-of-service (QoS) criterion and a lower modulation coding scheme (MCS), and a second data stream of at least the two data streams has a lower QoS criterion and a higher MCS. Then, the interface circuit may estimate a communication performance metric associated with the second data stream. Next, the interface circuit may selectively transmit an MCS probe associated with the second data stream based at least in part on the communication performance metric and the lower QoS criterion. Moreover, in response to receiving feedback information associated with the recipient electronic device and the MCS probe, the interface circuit may modify the first MCS and/or the second MCS.