公开(公告)号：US10990349B2

公开(公告)日：2021-04-27

申请号：US16141776

申请日：2018-09-25

Applicant: Apple Inc.

Inventor： Aarti Kumar ,  Ahmad Rahmati ,  Natalia A. Fornshell ,  Sriram Hariharan

IPC: H04R3/12 ,  H04L5/00 ,  G06F3/16

Abstract: A host device communicating with a plurality of accessory devices transmits audio data packets via a broadcast channel to the plurality of accessory devices. When one of the plurality of accessory devices determines an audio data packet has not been received, the accessory device sends a negative-acknowledgement signal (NACK) via a unicast channel. The NACK indicates that the at least one of the accessory devices did not receive at least one audio data packet. The host device retransmits the at least one audio data packet indicated as not being received via the broadcast channel to the plurality of accessory devices. Other aspects are also described and claimed.

公开(公告)号：US20210028928A1

公开(公告)日：2021-01-28

申请号：US16982513

申请日：2019-03-19

Applicant: Apple Inc.

Inventor： Sriram Hariharan ,  Yannick L. Sierra ,  Frederic Jacobs

IPC: H04L9/08 ,  H04L29/06

Abstract: Techniques are disclosed relating to using a device to gain access to another system. In some embodiments, a first mobile device performs a pairing operation with a control unit that controls access to a system, the pairing operation including the first mobile device establishing a first cryptographic key with the control unit. The first mobile device receives a request to enable a second mobile device to communicate with the control unit, and in response to receiving the request, the first mobile device generates a second cryptographic key from the first cryptographic key. The first mobile device provides the second cryptographic key to the second mobile device. The second mobile device is configured to send a beacon including a payload encrypted with the second cryptographic key, and the encrypted payload is usable to authenticate the second mobile device to the control unit.

公开(公告)号：US10805879B2

公开(公告)日：2020-10-13

申请号：US16144493

申请日：2018-09-27

Applicant: APPLE INC.

Inventor： David Shaw ,  Ariane Cotte ,  Alon Paycher ,  Robert Watson ,  Gregory Burns ,  Chandrahas Aralaguppe Chandramohan ,  Sriram Hariharan ,  Jonathan Shavit ,  Adir Eini

IPC: H04W52/02 ,  H04W76/28 ,  H04W76/14 ,  H04W4/80 ,  H04W76/11 ,  H04W8/00

Abstract: A first device is configured to establish a connection over a short-range communication link with a second device. The first device may transition to a sleep state, terminate (i) a paging operation and a page scanning operation associated with a paging protocol and (ii) an advertisement scanning operation associated with an advertisement protocol and perform an advertisement broadcast operation associated with the advertisement protocol, the advertisement broadcast operation generating an advertisement to be broadcast at a first interval, wherein the first interval is greater than a second interval for performing advertisement broadcast operations in an active state.

公开(公告)号：US10660037B2

公开(公告)日：2020-05-19

申请号：US15943602

申请日：2018-04-02

Applicant: Apple Inc.

Inventor： Sriram Hariharan ,  Venkatesh Rajendran ,  Alon Paycher ,  Michael Jason Giles

IPC: H04W52/02 ,  H04W8/00 ,  H04W4/02 ,  H04W4/80 ,  H04W88/06

Abstract: A first device may communicate via a first wireless interface (WI) and a second WI, with the second WI operating at a relatively higher power level than the first WI. The first device may receive a scan notification corresponding to wireless scanning performed by a second device. The first device may subsequently perform wireless scanning using the second WI in response to the scan notification indicating that the first device is within effective communication range of a third device. The first device may receive the scan notification over a wireless connection established between the first device and the second device using the first WI. The first device may transmit filter information to the second device, the filter information indicating when, and for which scans the first device is to receive scan notifications. The first device may also activate the second WI and use the second WI to perform ranging and/or control operations associated with the third device.

公开(公告)号：US10652736B2

公开(公告)日：2020-05-12

申请号：US16279961

申请日：2019-02-19

Applicant: Apple Inc.

Inventor： Mitchell D. Adler ,  Yannick L. Sierra ,  Ganesha A. G. Batta ,  Michael Giles ,  Akshay M Srivatsa ,  Craig P. Dooley ,  Sriram Hariharan ,  Robert D. Watson

IPC: H04L29/06 ,  H04W12/04 ,  H04L9/08 ,  H04L9/14 ,  H04W12/02

Abstract: Some embodiments provide a method for establishing a secured session with backward security between a first device and a second device. In some embodiments, the method establishes a communication session between the first and second devices using shared keys stored at the first and second devices. The method exchanges encrypted data between the first and second devices as a part of the communication session. The method, upon completion of the communication session, modifies the shared key at the first device in a predictable way. The shared key is modified at the second device in the same predictable way. The method then stores the modified shared key at the first device. The modified shared key cannot be used to decrypt any portion of the encrypted data of the current and previous communication sessions.

公开(公告)号：US20190373430A1

公开(公告)日：2019-12-05

申请号：US16240911

申请日：2019-01-07

Applicant: Apple Inc.

Inventor： Akshay Mangalam Srivatsa ,  Ariane Cotte ,  Craig P. Dooley ,  Duy N. Phan ,  Ganesha Adkasthala Ganapathi Batta ,  Hyundoo Shin ,  Kang Sun ,  Matt I. Gillette ,  Michael Jason Giles ,  Robert D. Watson ,  Sean P. Wilson ,  Sriram Hariharan ,  Sujatha Viswanathan ,  Todd Wheeler ,  Yilok L. Wong ,  David John Shaw ,  Sarang S. Ranade

IPC: H04W4/80 ,  H04W76/14 ,  H04W76/11 ,  H04W8/00

Abstract: Methods for aggregating Bluetooth profiles for faster connection and configuration are disclosed, including transmitting, subsequent to establishing a connection, a request message to a peer device that indicates support of a fast connection protocol for Bluetooth profiles configuration and receiving a response message from the peer device that indicates the peer device supports the fast connection protocol. After pairing with the peer device, a first list of profile descriptors for a plurality of Bluetooth profiles supported by the device may be transmitted to the peer device and a second list of profile descriptors for a plurality of Bluetooth profiles supported by the peer device may be received. A configuration of a plurality of Bluetooth profiles base, at least in part, on a comparison of the first list of profile descriptors to the second list of profile descriptors may be determined and transmitted to the peer device.

公开(公告)号：US10419912B2

公开(公告)日：2019-09-17

申请号：US15911644

申请日：2018-03-05

Applicant: Apple Inc.

Inventor： Akshay Mangalam Srivatsa ,  Craig P. Dooley ,  David John Shaw ,  Ganesha Adkasthala Ganapathi Batta ,  Michael Jason Giles ,  Sriram Hariharan

IPC: H04W76/10 ,  H04B7/185 ,  H04W4/80 ,  H04M1/725 ,  H04W4/08 ,  H04W12/04 ,  H04L29/08 ,  H04W76/14 ,  H04W12/00 ,  H04W84/18

Abstract: A first wireless communication device (UE device) associated with a certain user (or included in a specified set/group of UE devices) may establish a first communication link with an accessory device according to a short-range radio access technology, and transmit link (pairing) information associated with the first communication link to a server, such as a cloud-based server. The server may share this (first) link information with other UE devices associated with the same user (or belonging to the same specified group of UE devices as the first UE device). Link information associated with the other UE devices (i.e. second link information) may equally be shared with the accessory device, and the other UE devices and accessory device may use the first link information and second link information in establishing respective communication links between any of the other UE devices and the accessory device without having to undergo a pairing procedure.

公开(公告)号：US10271209B2

公开(公告)日：2019-04-23

申请号：US15275231

申请日：2016-09-23

Applicant: Apple Inc.

Inventor： Mitchell D. Adler ,  Yannick L. Sierra ,  Ganesha A. G. Batta ,  Michael Giles ,  Akshay M. Srivatsa ,  Craig P. Dooley ,  Sriram Hariharan ,  Robert D. Watson

IPC: H04L29/06 ,  H04W12/04 ,  H04L9/08 ,  H04L9/14 ,  H04W12/02

Abstract: Some embodiments provide a method for establishing a secured session with backward security between a first device and a second device. In some embodiments, the method establishes a communication session between the first and second devices using shared keys stored at the first and second devices. The method exchanges encrypted data between the first and second devices as a part of the communication session. The method, upon completion of the communication session, modifies the shared key at the first device in a predictable way. The shared key is modified at the second device in the same predictable way. The method then stores the modified shared key at the first device. The modified shared key cannot be used to decrypt any portion of the encrypted data of the current and previous communication sessions.

公开(公告)号：US09942849B1

公开(公告)日：2018-04-10

申请号：US15599760

申请日：2017-05-19

Applicant: Apple Inc.

Inventor： Sriram Hariharan ,  Venkatesh Rajendran ,  Alon Paycher ,  Michael Jason Giles

IPC: H04W52/02 ,  H04W4/00 ,  H04W8/00 ,  H04W4/02

CPC classification number: H04W52/0229 ,  H04W4/023 ,  H04W4/80 ,  H04W8/005

Abstract: A first device may communicate via a first wireless interface (WI) and a second WI, with the second WI operating at a relatively higher power level than the first WI. The first device may receive a scan notification corresponding to wireless scanning performed by a second device. The first device may subsequently perform wireless scanning using the second WI in response to the scan notification indicating that the first device is within effective communication range of a third device. The first device may receive the scan notification over a wireless connection established between the first device and the second device using the first WI. The first device may transmit filter information to the second device, the filter information indicating when, and for which scans the first device is to receive scan notifications. The first device may also activate the second WI and use the second WI to perform ranging and/or control operations associated with the third device.

公开(公告)号：US09913079B2

公开(公告)日：2018-03-06

申请号：US14871487

申请日：2015-09-30

Applicant: Apple Inc.

Inventor： Akshay Mangalam Srivatsa ,  Craig P. Dooley ,  David John Shaw ,  Ganesha Adkasthala Ganapathi Batta ,  Michael Jason Giles ,  Sriram Hariharan

IPC: H04W76/02 ,  H04B7/185 ,  H04W4/00 ,  H04M1/725 ,  H04W4/08 ,  H04W12/04 ,  H04L29/08 ,  H04W84/18

CPC classification number: H04W4/80 ,  H04L67/104 ,  H04M1/7253 ,  H04W4/08 ,  H04W12/04 ,  H04W76/14 ,  H04W84/18

Abstract: A first wireless communication device (UE device) associated with a certain user (or included in a specified set/group of UE devices) may establish a first communication link with an accessory device according to a short-range radio access technology, and transmit link (pairing) information associated with the first communication link to a server, such as a cloud-based server. The server may share this (first) link information with other UE devices associated with the same user (or belonging to the same specified group of UE devices as the first UE device). Link information associated with the other UE devices (i.e. second link information) may equally be shared with the accessory device, and the other UE devices and accessory device may use the first link information and second link information in establishing respective communication links between any of the other UE devices and the accessory device without having to undergo a pairing procedure.