公开(公告)号：US20190104424A1

公开(公告)日：2019-04-04

申请号：US16146571

申请日：2018-09-28

Applicant: Apple Inc.

Inventor： Sriram HARIHARAN ,  Alon PAYCHER ,  Ran IRONY ,  Sreeraman ANANTHARAMAN ,  Robert D. SILFVAST

IPC: H04W24/02 ,  H04L5/00 ,  H04R3/12

Abstract: Methods and apparatus for communicating audio packets with ultra-low latency at high data rates from an audio source device to one or more audio output devices over a wireless personal area network (WPAN) connection, such as via a Bluetooth connection. Latency is reduced by using time-efficient audio coding and decoding, limited retransmissions, reduced time and frequency of acknowledgements, and by combining Bluetooth Classic (BTC) packets for downlink audio and downlink control with Bluetooth Low Energy (BTLE) packets for uplink control, uplink acknowledgements, and inter-device wireless communication. The number of retransmissions and packet concealments per frame cycle can be limited to an upper threshold number to satisfy a low latency requirement.

公开(公告)号：US20190104423A1

公开(公告)日：2019-04-04

申请号：US16146138

申请日：2018-09-28

Applicant: Apple Inc.

Inventor： Sriram HARIHARAN ,  Alon PAYCHER ,  Ran IRONY ,  Sreeraman ANANTHARAMAN ,  Robert D. SILFVAST

IPC: H04W24/02 ,  H04L12/26 ,  H04R3/12

Abstract: Methods and apparatus for communicating audio packets with ultra-low latency at high data rates from an audio source device to one or more audio output devices over a wireless personal area network (WPAN) connection, such as via a Bluetooth connection. Latency is reduced by using time-efficient audio coding and decoding, limited retransmissions, reduced time and frequency of acknowledgements, and by combining Bluetooth Classic (BTC) packets for downlink audio and downlink control with Bluetooth Low Energy (BTLE) packets for uplink control, uplink acknowledgements, and inter-device wireless communication. The number of retransmissions and packet concealments per frame cycle can be limited to an upper threshold number to satisfy a low latency requirement.