Samsung Electronics Co., Ltd.

Intel Corporation

Koninklijke Philips Corporation N.v.

Google Inc.

Other

Intel IP Corporation

Sisvel International S.a.

Xuemei Ouyang

Chiu Ngo

Monisha Ghosh

Jiang Zhu

Jeffrey Kuramoto

Huaning Niu

Ofer Hareuveni

Robert D Hughes

Itzik Shahar

Shijing Xian

Oren Haggai

Joseph Patrick Meehan

Harish Balasubramaniam

Marcel Holtmann

Luiz Von Dentz

Chethan Tumkur Narayan

Daniel Barros

Nihar Jindal

Ganesh Venkatesan

Srenik Suresh Mehta

Seang Yong Chau

Hakan Magnus Eriksson

Ke Dong

Guang Xie

Pen Li

Wenjing Su

Smriti Narang

Jyh Chau Horng

Himanshu Bhalla

Qi Jiang

Denis Kenzior

Omar El Ayach

Rodney A Kennedy

Dino Miniutti

Sriram Sundararajan

Chi Fai Yip

Kris D Fleming

A communication device comprises one or more sensors configured to generate sensor data, a wireless interface, and a processor. The wireless interface is configured to establish a connection with a remote device according to a short-range wireless communication protocol and to transmit one or more signals to the remote device, the one or more signals representing information configured according to a media format. The processor is configured to determine at least one activity mode based on the sensor data from the one or more sensors on at least one of the communication device or the remote device, and during the transmission of the one or more signals, control the wireless interface to increase a transmit power level to a maximum transmit power level based on the determined activity mode.

Selective direct increase of transmit power level of a wireless communication device to a maximum power level based on detected activity mode or received signal quality

Role switch between wirelessly paired master/slave devices may be performed without perceived glitches in audio. The devices negotiate an anchor point, such as a point in time or a point in relation to other events, for performing the role switch. To prepare for the role switch prior to the anchor point, the devices communicate a variety of information, such as information for communicating with the host device after the role switch and information for bit processing after the role switch. The slave device may use such information to serve in the master role, without the host knowing that a role switch occurred.

Seamless role switch for true wireless ear buds

A system and method is provided for improving signal quality in communications among fully wireless systems including a host device in wireless communication with a primary accessory which further wirelessly communicates with a secondary accessory. The host device generates information for use by the primary accessory in determining which channels have interference and should be avoided. The information may include an adaptive frequency hopping (AFH) channel map for communications between the host and the primary device, from which the primary device can infer which frequency bands have interference and generate a second AFH map for communications between the primary accessory and the secondary accessory accordingly. In other examples the information includes the second AFH map generated by the host, for example, based on an out-of-band scan. In further examples, the information includes an indication of channels used by recognized nearby access points.

External information assistant channel assessment for bluetooth adaptive frequency hopping

The present disclosure provides for detection of conditions, and triggering role switch between wirelessly paired devices in response to detection of particular conditions. In response to detection of particular conditions, a primary device may switch roles with a secondary device. Such conditions may include battery level of each device, signal strength of each device, audio buffer levels, whether the devices are being worn by a user, whether a microphone is active, historic data, or any combination of these or other conditions.

Detecting conditions to trigger role switch

Some demonstrative embodiments include devices, systems and methods of communication by co-located wireless communication modules. For example, a device may be configured to receive a latency attribute indicating an allowed latency to transmit a packet using one or more shared resources shared between a plurality of wireless communication modules; receive a first priority level indicating a first transmission priority of the packet; increase the first priority level to a second priority level based on a comparison between the allowed latency and a time from reception of the latency attribute; and send the second priority level to an arbitration module, the second priority level to indicate to the arbitration module a second transmission priority to transmit the packet using the shared resources.

Apparatus, system and method of communication by co-located wireless communication modules

Methods, apparatus, systems and articles of manufacture to improve Bluetooth low energy streaming connection efficiency are disclosed herein. An example method includes accessing a request received at a first device from a second device, the request requesting set up of an isochronous link between the first device and the second device, the request including a configuration identifier. Whether the configuration identifier identifies a configuration stored at the first device is determined. In response to determining that the configuration identifier identifies the configuration stored at the first device, the isochronous link using the stored configuration.

Methods and apparatus to improve Bluetooth low energy streaming connection efficiency

Example methods and apparatus to facilitate time synchronization of audio over Bluetooth Low Energy are disclosed herein. An apparatus includes a packet processor to process a data packet to identify a timestamp encoded in the data packet; a buffer to store the data packet with the timestamp; and a host to: when the data packet is removed from the buffer, initiate a timer; and when the timer reaches a time corresponding to a sum of the timestamp and a presentation delay time, out the data packet to render the data packet.

Methods and apparatus to facilitate time synchronization of audio over bluetooth low energy

This disclosure describes an enhanced Bluetooth channel establishment. A device may identify an isochronous connection oriented (ICO) command for a Bluetooth communication. The device may send a first ICO start command from a first link layer (LL) to a second LL, and the first LL may receive a first ICO start confirmation from the second LL. The first LL may then send a second ICO start command to a third LL, and the first LL may receive a second ICO start confirmation from the third LL. A third ICO start confirmation may then be sent. The device may also have an ICO request and response exchange between LL's.

Enhanced bluetooth channel establishment

A system and method is provided wherein channel state information assisted MIMO transmission based on singular value decomposition (SVD) () () simplifies the decoding process. The present invention is a joint source and channel coding system and method for robust wireless multimedia communication. Using the fact that SVD redistributes the channel energy in a descending way, the base layer of the Fine-Grained-Scalability (FGS) () is mapped to the highest signal-to-noise (SNR) path to obtain better protection, while other enhancement layers are mapped to other paths such that less important layers are mapped to lower SNR paths in the SVD-decomposed channel. A multiple description code (MDC) () is also used in this manner such that at least one coded stream is provided more protection because of the high SNR. This invention pertains to any MIMO based wireless multimedia communication system.

Robust wireless multimedia transmission in multiple in multiple-out (MIMO) system assisted by channel state information

A MIMO wireless system includes a transmitter having a parser that parses a bit stream into multiple spatial data streams and multiple interleavers corresponding to the multiple spatial data streams, where each interleaver interleaves the bits in the corresponding spatial data stream by performing frequency rotation after an interleaving operation, to increase diversity of the wireless system. The MIMO wireless system also includes a receiver that has deinterleavers that deinterleaves spatial bit streams transmitted by the transmitter.

Interleaver for IEEE 802.11n standard

An improved interleaver design to fully explore the diversity of the MIMO OFDM systems provides higher diversity gain than usual. A method for wireless data communication using such interleaver design implements parsing a bit stream into multiple spatial data streams, interleaving the bits in each spatial data stream by performing bit circulation and column swapping to increase diversity of the wireless system, and transmitting the bits of each spatial data stream.

Interleaver design with column swap and bit circulation for multiple convolutional encoder MIMO OFDM system

A MIMO wireless system includes a transmitter having a parser that parses a bit stream into multiple spatial data streams and multiple interleavers corresponding to the multiple spatial data streams, where each interleaver interleaves the bits in the corresponding spatial data stream by performing multiple column rotations and row rotation, to increase diversity of the wireless system. The MIMO wireless system also includes a receiver that has deinterleavers that deinterleaves spatial bit streams transmitted by the transmitter.

Interleaver design for IEEE 802.11n standard

A MIMO communication system implements an interleaver design with multiple encoders for more than two transmit antennas for high throughput WLAN communication systems. Multiple encoders are utilized in the transmitter and multiple decoders are utilized in the receiver, wherein each encoder operates at lower clock speed than would be necessary with a single encoder. In conjunction with using multiple encoders, a modified interleaving function for each spatial stream processing allows fully exploring the diversity gains. The provided interleaving function is suitable for transmitter architectures with multiple encoders. Similarly, a modified de-interleaving function is provided that is suitable for receiver architectures with multiple decoders.

Interleaver design with multiple encoders for more than two transmit antennas in high throughput WLAN communication systems

A system and method for a simplified Maximum Likelihood (ML) decoding () for MIMO systems is provided. The full ML decoding gives the lower bound of the decoding for CC coded MIMO systems. However, the computation cost is too high to be implemented in real system. Many alternative methods have been proposed for the decoding. Among them, weighted Zero Forcing (WZF) is one that can give affordable performance with reasonable computation complexity but there are several dB of performance gap for the WZF decoding and ML decoding. This present invention discloses a decoding system and method having improved performance over WZF decoding with affordable implementation complexity.

System and method for maximum likelihood decoding in multiple out wireless communication systems

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San Jose, CA, United States of America

Xuemei Ouyang