Atheros Communications, Inc.

Sibeam, Inc.

Qualcomm Incorporated

Qualcomm Atheros Inc.

Lattice Semiconductor Corporation

X Development LLC

Silicon Image Gmbh

Jeffrey M Gilbert

Won-Joon Choi

Ardavan Maleki Tehrani

Qinfang Sun

Yi-Hsiu Wang

Xiaoru Zhang

Kumar Mahesh

William John McFarland

Ning Zhang

Paul J Husted

Prakash Kamath

Chuen-Shen Bernard Shung

Karim Nassiri-Toussi

In Sung Cho

Rob Frizzell

John S Thomson

Jianhan Liu

Tao-Fei Samuel Ng

Lars E Thon

Donald Farrell Breslin

Guocong Song

Teresa H Meng

Keangpo Ricky Ho

Huanchun Ye

Chaohuang Zeng

James Woo

Karim Nassiri Toussi

Dmitry Cherniavsky

Yi-Hsu Wang

Karthik Krishnaswami

Karen Wang

John Marshall

Gyudong Kim

Hoon Choi

Sundararajan Sriram

Ada Shuk Yan Poon

Craig H Barratt

Sohrab Emami-Neyestanak

Jeffrey Scott Kuskin

Ju Hwan Yi

Nishit Kumar

Young Il Kim

Chinh Doan

Kannan Ramchandran

Chandlee B Harrell

Bevan M Baas

Stephen Pope

Tim Williams

Dengwei Fu

Sheung Li

Robert W Brodersen

Victor Ramamoorthy

James Gilb

Keang-Po Ricky Ho

Ting-Kuo Lo

Peifeng Wu

Paul J Hustad

Yi Hsiu Wang

Michael S Y Wong

Samuel Ng

George Palmer

Clifford J Dunn

Kyeong Ryu

Chih-Yuan Hsieh

Chuen-Shen (Bernard) Shung

James P K Gilb

Simon Scott

Ching-Hsiu Chiang

William J Mcfarland

Chadlee B Harrell

Karim Nassiri-Tousasi

Dmitry M Cherniavsky

Ardavan M 350 Sharon Park Drive Tehrani

Aspects of the disclosure provide for an antenna system. The antenna system includes a main reflector, a phased array feed, and a mechanical steering system. The phased array feed is configured to receive and/or transmit signals reflected off the main reflector and to electronically steer a transmitted signal on a first axis. The main reflector and the phased array feed are both attached to the mechanical steering system, and the mechanical steering system is configured to move the transmitted signal along a second axis.

Parabolic reflector combined with phased array feed for long range communication

In a semi-open loop rate adaptation scheme for a multiple-input multiple-output (MIMO) system, a transmitter can advantageously use one or more quality metrics of an uplink as well as knowledge of device characteristics of both ends to perform fast and accurate rate adaptation.

Rate adaptation using semi-open loop technique

A method and apparatus for identifying devices using a bitmap are disclosed. In one embodiment, the method comprises: accessing a memory to obtain one or more bitmaps that map each bit location in the bitmap to an index value, where one index value is assigned to each remote wireless media device of a wireless network in a wireless communication system; and examining those bitmaps and determining at least one characteristic of a remote wireless media device and a device identifier that identifies the remote wireless media device in the wireless network based on the bit position in those bitmaps.

Bitmap device identification in a wireless communication system

Embodiments of the invention are generally directed to multiple protocol tunneling using time division operations. An embodiment of an apparatus includes an interface for communication with a second apparatus, the interface including a shared communication link; and a multiplexer to multiplex data of each of multiple protocols into time slots for transmission, the protocols including a first protocol. The time slots are distributed among the protocols, where the distribution of the time slots among the protocols includes assigning one or more time slots to the first protocol to enable the data of the first protocol to meet one or more performance requirements for the first protocol.

Multiple protocol tunneling using time division operations

An apparatus, system and method for performing dispatch operations using a signal physical interface are disclosed. In one embodiment, the apparatus is for use in a wireless communication system for communicating with a wireless network and comprises a host processor, a transceiver, a physical interface coupling the host processor and the transceiver, and a memory accessible by the host processor and the transceiver to exchange information between the host processor and the transceiver. The transceiver is operable to store data in the memory for the host processor to send data to the host processor using the memory and asserts a control signal to the host processor to notify the host processor that the memory contains data for the host processor, and the host processor is operable to access the memory to obtain the data thereafter. The data is associated with a remote device in the wireless network and is stored as one or more packets at a first storage location in the memory with a first identifier identifying the remote device.

Dispatch capability using a single physical interface

Embodiments of apparatuses and methods to decrease a size of a memory in a low-latency video communication system are described. A control unit is configured to monitor a condition associated with at the communication link. The control unit is configured to receive the video content over a link based on monitoring. A memory comprising a full-frame buffer is coupled to the control unit. The full-frame buffer is configured as a history buffer to store a full frame of the video in a coding format that matches the coding format of the video content received over the link. A display unit is coupled to the history buffer. A portion of the full-frame buffer is configured as a network streaming buffer.

Full-frame buffer to improve video performance in low-latency video communication systems

A system and method are disclosed for transmitting data over a wireless channel. In some embodiments, transmitting data includes receiving convolutionally encoded data and enhancing the transmission of the data by further repetition encoding the data.

Repetition coding for a wireless system

A media access controller (MAC) generates a composite packet having an optimized format for carrying audio, video, and data traffic. A header portion of the composite packet is encoded separately from a data portion of the composite packet. A physical device interface (PHY) is coupled to the MAC. The PHY encodes and decodes between a digital signal and a modulated analog signal. The PHY comprises a high rate physical layer circuit (HRP) and a low rate physical layer circuit (LRP). A radio frequency (RF) transmitter is coupled to the PHY to transmit data.

Wireless HD MAC frame format

A multiple-input multiple-output (MIMO) system can transmit on multiple antennas simultaneously and receive on multiple antennas simultaneously. Unfortunately, because a legacy 802.11a/g device is not able to decode multiple data streams, such a legacy device may 'stomp' on a MIMO packet by transmitting before the transmission of the MIMO packet is complete. Therefore, MIMO systems and methods are provided herein to allow legacy devices to decode the length of a MIMO packet and to restrain from transmitting during that period. These MIMO systems and methods are optimized for efficient transmission of MIMO packets.

Multiple-input multiple-output system and method

A method and apparatus for initializing a transceiver in a wireless communication system. In one embodiment, a method for initializing a transceiver that is part of an apparatus for use in a wireless communication system for communicating with WirelessHD devices in a wireless network, where the apparatus comprises a host processor; a transceiver; a physical interface coupling the host processor and the transceiver; and a memory accessible by the host processor and the transceiver to exchange information between the host processor and the transceiver, the initialization method comprising resetting the transceiver by initializing internal hardware and software subsystems of the transceiver; after resetting the transceiver, the transceiver entering a configuration state to configure the transceiver; configuring the transceiver, such that the transceiver is configured as part of initialization; and after configuration, the transceiver entering a wait enable state during which the transceiver waits for its wireless interface to be enabled before wireless operation of the transceiver becomes active.

Initializing a transceiver in a wireless communication system

A system and method are described for binding together a plurality of wireless data communications channels, whereby an aggregate throughput improvement is realized. A master channel amongst the channels to be bound is compatible with existing standards-based wireless data communications equipment. The master channel serves to perform MAC association and flow control. Aggregate throughput is improved by sending and receiving either multiple sets of separately encoded packets, commonly encoded packets or redundantly encoded packets.

Multi-channel binding in data transmission

A method and system of optimizing transmit beam forming in a multiple radio wireless system is provided. A stimulus signal can be provided to an analog receive input of a device under test (DUT), wherein the DUT includes multiple radios. A receive phase and amplitude can be measured at baseband using the stimulus signal for each radio. At this point, a receive weight and its conjugate can be determined using the receive phases and amplitudes. A calibration vector and its conjugate can also be determined, wherein a product of the receive weight conjugate and the calibration vector conjugate generate a transmit weight. This transmit weight can be applied to transmit signals during the transmit beam forming using the multiple radios.

Multi-channel RX/TX calibration and local oscillator mismatch mitigation

Transmission monitoring can be used to determine the optimum data rate for a channel. The transmission monitoring can include sending data packets in the channel using various data rates. At least some data packets are sent using the current optimum data rate, a rate lower than the current optimum data rate, and a rate higher than the current optimum data rate. One of these data rates can be selected as the new optimum data rate. In one embodiment, if the current optimum data rate is less than a predetermined data rate, then the client is triggered to begin scanning for other available access points.

Wireless LAN using transmission monitoring

Growing community of inventors

Sunnyvale, CA, United States of America

Jeffrey M Gilbert