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.

公开(公告)号：US09848069B2

公开(公告)日：2017-12-19

申请号：US14496314

申请日：2014-09-25

Applicant: Apple Inc.

Inventor： Adam Geboff ,  Sriram Hariharan ,  Joakim Linde ,  Li-Quan Tan ,  Shahrooz Shahparnia

IPC: H04W4/00 ,  H04W56/00 ,  H04L29/08 ,  H04L29/06 ,  H04W52/02

CPC classification number: H04L69/329 ,  H04L69/28 ,  H04W4/80 ,  H04W52/0274 ,  H04W56/00 ,  Y02D30/40 ,  Y02D70/142 ,  Y02D70/144

Abstract: Time synchronization between a central wireless communication device and a peripheral wireless communication device is described. Events associated with an application are time stamped at the central wireless communication device, and one or more link layer messages are sent to the peripheral wireless communication device to provide time stamp information to replicate the event timing at the peripheral wireless communication device. A first link layer message includes information about an internal Bluetooth clock to calibrate a corresponding internal clock value at the peripheral wireless communication device. A second link layer message includes information about a current value for the Bluetooth clock and also a value for an offset that provides a time position at a finer granularity than the Bluetooth clock within a timeslot specified by the Bluetooth clock value. Application layer event synchronization between the central and peripheral wireless communication devices allow for power reduced dormant states between events.

公开(公告)号：US09848026B2

公开(公告)日：2017-12-19

申请号：US15001116

申请日：2016-01-19

Applicant: Apple Inc.

Inventor： Siegfried Lehmann ,  Christiaan A. Hartman ,  Camille Chen ,  Sriram Hariharan ,  Jianxiong Shi ,  Syed Aon Mujtaba ,  Alessio Centazzo ,  Donald Eng ,  Michael J. Giles ,  Craig P. Dooley ,  Akshay Mangalam Srivatsa ,  Anjali S. Sandesara ,  Langford M. Wasada

IPC: H04L29/06 ,  H04W4/00 ,  G06F3/02 ,  G06F1/32 ,  H04W28/06

CPC classification number: H04L65/4076 ,  G06F1/3209 ,  G06F1/3278 ,  G06F3/0227 ,  H04W4/80 ,  H04W28/06 ,  Y02D10/157

Abstract: An interface circuit in a computing device may communicate with user-interface devices using shared slots during time intervals. In particular, the computing device may transmit outgoing messages to the user-interface devices at a first predefined time during sequential time intervals when the user-interface devices transition from a sleep mode to a normal mode. In response, the computing device may receive incoming messages from one or more of the user-interface devices at a second predefined time following the first predefined time during the sequential time intervals. Then, the computing device may transmit a multicast message to the user-interface devices at a third predefined time during the sequential time intervals. In response to the given multicast message, one of the user-interface devices may communicate data to the computing device. Note that, in some instances, a multicast time slot may instead be used to communicate data to one of the user-interface devices.

公开(公告)号：US09788351B2

公开(公告)日：2017-10-10

申请号：US15064560

申请日：2016-03-08

Applicant: Apple Inc.

Inventor： Sriram Hariharan

IPC: H04W4/00 ,  H04W76/02 ,  H04W84/20

CPC classification number: H04W76/02 ,  H04W4/008 ,  H04W4/80 ,  H04W76/10 ,  H04W84/20 ,  Y02B60/50 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/166 ,  Y02D70/22 ,  Y02D70/26

Abstract: The embodiments set forth techniques for enabling two devices to seamlessly construct/deconstruct a BTC connection on an as-needed basis. According to some embodiments, the technique involves exchanging, over a BTLE connection that exists between the two devices, information that enables the two devices to establish a BTC connection in a timely and power-efficient manner. To construct a BTC connection, a master device transmits, to a slave device using Link Layer (LL) control messages over an existing BTLE connection, clock information associated with the master device, a Logical Bluetooth Classic Transport Address (LT_ADDR) associated with the slave device, and other information. In turn, the BTC connection can be established between the master device and the slave device using the exchanged information. This technique can require less time and consume less power compared with conventional approaches that do not use existing communication channels to establish a BTC connection.

公开(公告)号：US20150350334A1

公开(公告)日：2015-12-03

申请号：US14726077

申请日：2015-05-29

Applicant: Apple Inc.

Inventor： Yong Liu ,  Christiaan A. Hartman ,  Daniel R. Borges ,  Sriram Hariharan ,  Chiu Ngok E. Wong ,  Su Khiong Yong

IPC: H04L29/08

CPC classification number: H04L67/141 ,  H04L67/16 ,  H04W4/80 ,  H04W48/16 ,  Y02D70/00 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/162 ,  Y02D70/164 ,  Y02D70/166 ,  Y02D70/22 ,  Y02D70/26

Abstract: An apparatus and methods are provided for initiating a network connection between a first device and a second device. While one or more high-power network interfaces of the first device are in a dormant state, the first device communicates with a second device via the first device's low-power network interface. The first device can determine, based on the communication, whether to establish a network connection with the second device via a high-power network interface of the first device. Next, if the first device is to establish the network connection with the second device via the high-power network interface, the device can wake the first high-power network interface and connect to the second device via the first high-power network interface.

Abstract translation: 提供了用于启动第一设备和第二设备之间的网络连接的设备和方法。 当第一设备的一个或多个高功率网络接口处于休眠状态时，第一设备经由第一设备的低功率网络接口与第二设备进行通信。 第一设备可以基于通信来确定是否通过第一设备的大功率网络接口与第二设备建立网络连接。 接下来，如果第一设备经由大功率网络接口与第二设备建立网络连接，则设备可以唤醒第一大功率网络接口并经由第一大功率网络接口连接到第二设备。

公开(公告)号：US20150092642A1

公开(公告)日：2015-04-02

申请号：US14496314

申请日：2014-09-25

Applicant: Apple Inc.

Inventor： Adam Geboff ,  Sriram Hariharan ,  Joakim Linde ,  Li-Quan Tan ,  Shahrooz Shahparnia

IPC: H04J3/06 ,  H04L29/08 ,  H04W4/00

CPC classification number: H04L69/329 ,  H04L69/28 ,  H04W4/80 ,  H04W52/0274 ,  H04W56/00 ,  Y02D30/40 ,  Y02D70/142 ,  Y02D70/144

Abstract: Time synchronization between a central wireless communication device and a peripheral wireless communication device is described. Events associated with an application are time stamped at the central wireless communication device, and one or more link layer messages are sent to the peripheral wireless communication device to provide time stamp information to replicate the event timing at the peripheral wireless communication device. A first link layer message includes information about an internal Bluetooth clock to calibrate a corresponding internal clock value at the peripheral wireless communication device. A second link layer message includes information about a current value for the Bluetooth clock and also a value for an offset that provides a time position at a finer granularity than the Bluetooth clock within a timeslot specified by the Bluetooth clock value. Application layer event synchronization between the central and peripheral wireless communication devices allow for power reduced dormant states between events.

Abstract translation: 描述了中央无线通信设备和外围无线通信设备之间的时间同步。 与应用相关联的事件在中央无线通信设备处被时间标记，并且一个或多个链路层消息被发送到外围无线通信设备，以提供时间戳信息来复制外围无线通信设备处的事件定时。 第一链路层消息包括关于内部蓝牙时钟的信息，以在外围无线通信设备上校准相应的内部时钟值。 第二链路层消息包括关于蓝牙时钟的当前值的信息，以及与由蓝牙时钟值指定的时隙内的蓝牙时钟相比在更细粒度处提供时间位置的偏移值。 中央和外围无线通信设备之间的应用层事件同步允许事件之间的功率降低休眠状态。