Texas Instruments Corporation

Apple Inc.

Google Inc.

Anuj Batra

Srinath Hosur

Timothy M Schmidl

June Chul Roh

Tarkesh Pande

Il Han Kim

Jaiganesh Balakrishnan

Deric Wayne Waters

Anand Ganesh Dabak

Srinivas Lingam

Ariton E Xhafa

Kofi Dankwa Anim-Appiah

Su Khiong Yong

Ranjit Gharpurey

Bradford James Campbell

Samantha Rose Summerson

Mostafa Sayed Ibrahim

Yong Liu

Tianyu Wu

Jarkko L Kneckt

Jin-Meng Ho

Sudipto Chakraborty

Wenxun Qiu

Mehul Soman

Minghua Fu

David James Love

David L Milliner

Jing Lin

Jinjing Jiang

Lochan Verma

Naftali Sommer

David Patrick Magee

Manish Goel

Mingguang Xu

Srikanth Gummadi

Oren Shani

Daniel R Borges

Matthew Brendan Shoemake

Clive D Bittlestone

Matthew L Semersky

Charles Francis Dominguez

Seok-Jun Lee

Keangpo Ricky Ho

Yoel Boger

Veerendra Boodannavar

Qi Wang

Richard G C Williams

Heng-Chih Lin

Mithat C Dogan

Manoneet Singh

Reza Hoshyar

Wonsoo Kim

Ekanayake Ajith Amerasekera

Paul H Fontaine

Yumin Zhang

Noam Ginsburg

Debashis Dash

Oren Peles

Doron Burshtein

Kit Wing S Lee

Sundar Sriram

Ahmet G Cepni

Georgios Angelopoulos

Akira Yamanaka

Eko Nugroho Onggosanusi

Ramanuja Vedantham

Kumaran Vijayasankar

Tarik Muharemovic

Abdellatif Bellaouar

Joachim S Hammerschmidt

Qi S Wang

Hun-Seok Kim

Daniel Wajcer

Hirohisa Yamaguchi

Eren Sasoglu

Phillip Ellsworth Stahlfeld

Dale E Hocevar

Jie Liang

Timothy Raymond Zwiebel

Taejoon Kim

Michal Palczewski

William Hartley Setchell

Rafi Dalla Torre

Michel Frechette

Paul Aymeric Fontaine

Yichen Zhao

Mallinath Bareddy

Chunxiao Diao

Dennis Yung-Chi Hu

Min-Hao Wu

Timothy M Schmidt

Danielle Ayodele Hinton

Xiaoyong Chai

An electronic device (such as an access point) is described. This electronic device transmits an orthogonal frequency division multiple access (OFDMA) frame to a recipient electronic device (such as a client or a station). The OFDMA frame includes multiple predefined resource units (RUs) allocated to the recipient electronic device in a set of predefined RUs having associated frequency bandwidths. Moreover, the multiple predefined RUs include two or more first predefined RUs having a first number of tones less than a predefined amount, or two or more second predefined RUs having a second number of tones greater than or equal to the predefined amount. For example, the predefined amount may include 242 tones. Note that the multiple predefined RUs may have the same or different numbers of tones. Moreover, the electronic may receive an acknowledgment or a block acknowledgment from the recipient electronic device.

Multi-resource-unit aggregation

A method includes receiving a first plurality of symbols comprising complex portions. The method further includes applying conjugate symmetry to the first plurality of symbols, producing a second plurality of symbols comprising no complex portions. The method further includes transforming the second plurality of symbols using an inverse fast Fourier transform, producing a third plurality of symbols. The method further includes interpolating the third plurality of symbols, generating a short training field comprising at least one real portion of the third plurality of symbols, generating a long training field comprising at least one real portion of the third plurality of symbols, and transmitting the short training field and long training field in a WPAN.

Short and long training fields

An electronic device that performs a scan is described. During operation, the electronic device may perform, using a scanning radio, the scan of a band of frequencies, where the scanning radio only receives frames. Then, the electronic device may receive, using the scanning radio, a beacon associated with a second electronic device, where the beacon includes information associated with operation of a third electronic device in a second band of frequencies. Next, the electronic device may perform, using a data radio, a second scan of the second band of frequencies based at least in part on the information, where the data radio transmits and/or receives second frames, and where the second scan is performed, at least in part, while the scan is performed. Note that the electronic device may not be associated with (or may not have a connection with) the second electronic device and/or the third electronic device.

Beacon and probe-response frame type information for out-of-band discovery

Embodiments include methods of powerline communications using a preamble with band extension is provided. A method may include receiving a packet data unit PDU. Bit-level repetition is applied to at least a portion of the PDU to create a repeated portion. Interleaving is performed per a subchannel. Pilot tones are inserted in the interleaved portion. Each data tone is modulated with respect to a nearest one of the inserted pilot tones. The PDU is transmitted over a power line.

Robust mode for power line communications

During operation, an electronic device may perform, using a scanning radio, a scan of a band of frequencies, where the scanning radio only receives frames. Then, the electronic device may receive, using the scanning radio, a beacon frame associated with a second electronic device, where the beacon frame includes information associated with operation of a third electronic device in a second band of frequencies. Next, the electronic device may perform, using a data radio, a second scan of the second band of frequencies based at least in part on the information, where the data radio transmits and/or receives second frames, and where the second scan is performed, at least in part, while the scan is performed. Note that the electronic device may not be associated with (or may not have a connection with) the second electronic device and/or the third electronic device.

A system and method for optimizing power consumption of energy harvesting nodes in a wireless sensor network. In one embodiment, a system includes a network coordinator. The network coordinator includes a wireless transceiver and a controller. The wireless transceiver is configured to provide access to the wireless sensor network. The controller is configured to determine whether a wireless device that is wirelessly communicating with the network coordinator is powered via energy harvesting. The controller is also configured to schedule, based on a determination that the wireless device is powered via energy harvesting, the wireless device to communicate via the wireless sensor network using a priority timeslot of a superframe of the wireless sensor network. The priority timeslot is a timeslot occurring in an initial portion of the superframe.

Scheduling energy harvesting nodes in a wireless sensor networks

A system and method for reducing energy consumption in a wireless network. In one embodiment, a system includes a network coordinator configured to manage access to a wireless network. The network coordinator includes a controller. The controller is configured to define a channel hopping list that specifies on which channel a beacon signal is transmitted in each slot frame of the wireless network. The controller is also configured to set a number of time slots in each slot frame based on a length of the channel hopping list. The controller is further configured to transmit a first beacon signal in each slot frame on a channel specified by the channel hopping list. The number of slots in each slot frame causes the first beacon signal to be transmitted on a same channel in each slot frame.

Beacon scheduling for wireless networks

A PLC network system and method operative with OFDM for generating MIMO frames with suitable preamble portions configured to provide backward compatibility with legacy PLC devices and facilitate different receiver tasks such as frame detection and symbol timing, channel estimation and automatic gain control (AGC), including robust preamble detection in the presence of impulsive noise and frequency-selective channels of the PLC network. A PLC device may include a delayed correlation detector and a cross-correlation detector operating in concert to facilitate preamble detection in one implementation.

System and method for preamble detection in MIMO narrowband power line communications

A communication device in a network may receive a stream of frames from the network, in which each frame includes one or more beacon packets. A communication protocol being used by the network may be identified by tracking a preselected field within a sequence of beacon packets, in which the preselected field varies in a first known manner for a first protocol and in a second known manner for a second protocol. The communication device may then join to the network using the identified communication protocol to transmit and receive data.

Automatic selection of MAC protocol to support multiple prime PLC standards

Growing community of inventors

Dallas, TX, United States of America

Anuj Batra