Cubic Corporation

Apple Inc.

Anatoli Gostev

Paul Berenberg

Igor Ryshakov

Mohit Narang

Peter M Agboh

Joachim S Hammerschmidt

Vusthla Sunil Reddy

Axel Dominique Berny

Lei Li

Xiaojun Chen

Tad J Dreier

Louay Alsakka

Mike Baumgartner

Georgi Danielyan

Exemplary embodiments include a system having a first wireless audio output device configured to connect to a source device via a first piconet and a second wireless audio output device configured to connect to the first wireless audio output device via a second piconet. A schedule of the first piconet includes a plurality of slots associated with an audio packet, a first subset of the slots used by the source device to transmit the audio packet, the first and second wireless audio output devices tuning to the first piconet to listen for the transmissions of the audio packet, and when, after a last one of the first subset of slots, the first or second wireless audio output devices did not receive the audio packet, the first and second wireless audio output devices exchange information via the second piconet such that the both wireless audio output device receive the audio packet.

Real-time relay of wireless communications

A method of scheduling tasks for a Real-Time Operating System (RTOS) in a low-power, wireless, mesh network may include receiving, at a scheduler for the RTOS, a plurality of tasks to schedule for execution by one or more processors. The plurality of tasks may include a first task; the first task may be associated with an expected execution interval; and the expected execution interval may indicate an expected length of time for the one or more processors to execute the first task. The method may also include scheduling the plurality of tasks for execution by the one or more processors. The first task may be scheduled using the expected execution time such that the first task is executed without being interrupted by others of the plurality of tasks.

Reservation scheduler for real-time operating systems in wireless sensor networks

Methods of telecommunicating and systems configured to perform the methods are disclosed. In some embodiments, the methods include establishing a primary communications link, determining that a backup communications link is to be established, and determining a plurality of candidate network nodes. The method also includes selecting one of the candidate network nodes with which to establish the backup communications link, where the selected candidate network node is selected based at least in part on the selected candidate network node being in a foreign network, establishing the backup communications link with a selected candidate network node, and communicating using the backup communications link.

Proximity out-of-band mobile device to device communication by means of low-power mesh networks

A method of transmitting a packet in a low-power, ad-hoc, wireless mesh network may include receiving the packet at a first node. The network may include a plurality of nodes, and the plurality of nodes may include the first node. The method may also include transmitting, at a first time, the packet from the first node to a second node in the plurality of nodes. The method may additionally include receiving, at a second time, an indication from the second node that the second node successfully transmitted the packet to a third node. The method may further include maintaining a stored copy of the packet at the first node between the first time and the second time for retransmission.

Reliable message delivery in mesh networks

This disclosure describes processes and methods for enhancing reporting of status information in a wireless sensor network. This disclosure also provides designs of wireless sensor devices configured to connect to a wireless network, and to execute the processes disclosed herein. As described herein, a first sensor device transmits a beacon signal to a second wireless device, and the beacon signal is transmitted while the first and second wireless devices are disconnected from the sensor network. The first wireless device facilitates supplemental network formation by transmitting information to the second wireless device, wherein the information causes the second wireless device to form the supplemental network by performing network joining procedures with the first wireless sensor device, and wherein, after performing network joining procedures, the second wireless device transmits status information to the first wireless sensor device. The first wireless device then connects to the wireless network and transmits the status information through the network.

Null interface feature in wireless mesh networking device

Techniques are disclosed for tracking of packets in wireless networks. Embodiments generally include a network device that maintains a data structure for tracking received packets. The data structure includes records associated with the received packets. A bitmapped sequence field is used to track multiple packets in one record reducing memory storage and computational power necessary to maintain the data structure.

Packet sequence number tracking for duplicate packet detection

Techniques are disclosed for enabling accelerated rejoining of network devices in a low-power wireless network after a connection to the low-power wireless network is lost. Embodiments generally include, for a network device that periodically conducts scans for beacons on the low-power wireless network, increasing the frequency, or scanning rate, at which the scans are performed. After a certain period of time, if the network device has not joined the low-power wireless network, the network device can implement a different scanning rate until it rejoins with the network. Additional techniques may be used to reduce power usage and preserve the structure of a portion of the low-power wireless network that has become disconnected with the rest of the network.

Growing community of inventors

San Jose, CA, United States of America

Anatoli Gostev