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.