Patents Assigned to Atheros, Inc.
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Publication number: 20130257657Abstract: An apparatus and method for merging a disjoint pair of maps comprising a digital building map that includes a floor plan and an access point (AP) map that includes identifiers for a plurality of access points is presented. In some embodiments, a first trajectory plot, of a mobile device, relative to the AP map, is received and a plurality of hypotheses is set, where each hypothesis defines a unique translation between the AP map and the building map. A plurality of costs may be computed for the first trajectory, where each cost of the first trajectory corresponds to a distinct hypothesis in the plurality of hypotheses. The hypothesis where the first trajectory has the lowest cost relative to the other hypotheses may be selected.Type: ApplicationFiled: March 30, 2012Publication date: October 3, 2013Applicant: Qualcomm Atheros, Inc.Inventors: Lionel Jacques Garin, Sundar Raman
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Publication number: 20130243044Abstract: This disclosure is directed to a wireless device with a suppressor that couples to the aggressor signal of a frequency source to generate a cancelling signal for suppressing spurs resulting from operation of the frequency source. The amplitude and phase delay of the cancelling signal are adjusted to optimize the cancellation of the spur. Preferably, a calibration routine is performed to establish appropriate delay and amplitude values to cancel the spurs occurring at each device gain setting.Type: ApplicationFiled: March 16, 2012Publication date: September 19, 2013Applicant: Qualcomm Atheros, Inc.Inventors: Paul J. Husted, Michael P. Mack, Srenik S. Mehta
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Publication number: 20130239165Abstract: A media converter is to be coupled to an optical line terminal via an optical link and to a plurality of coax network units via coax links in a cable plant. The media converter includes an optical physical-layer device to receive and transmit optical signals via the optical link and a coax physical-layer device to receive and transmit electrical signals via the coax links. The media converter also includes an implementation of an optical-coax convergence layer to schedule transmissions of electrical signals from the plurality of coax network units by allocating coax resources among the plurality of coax network units in accordance with resource allocation for the optical link.Type: ApplicationFiled: September 10, 2012Publication date: September 12, 2013Applicant: Qualcomm Atheros, Inc.Inventors: Andrea GARAVAGLIA, Juan MONTOJO, Christian PIETSCH, Stephen J. SHELLHAMMER, Nicola VARANESE
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Publication number: 20130235730Abstract: Methods, systems, and apparatuses are described for communicating among stations in a network. A station in the network can determine costs between that station and a headend through a number of other stations. The station can select a low cost path from among the possible paths. Cost data from the determination can be transmitted from the station to other stations in the network for use in selecting low cost paths at those stations.Type: ApplicationFiled: April 29, 2013Publication date: September 12, 2013Applicant: Qualcomm Atheros, Inc.Inventors: Lawrence Winston Yonge, III, Srinivas Katar, Manjunath Anandarama Krishnam
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Publication number: 20130232537Abstract: A media converter is coupled to an optical link terminal and a plurality of coax network units in a cable plant. The media converter receives packets from the optical link terminal via an optical link. The packets include first packets addressed to coax network units on the cable plant and second packets addressed to network units outside of the cable plant. The media converter forwards the first packets to the coax network units on the cable plant via one or more coax links, such that the first packets are forwarded to each coax network unit on the cable plant, and discards the second packets.Type: ApplicationFiled: September 10, 2012Publication date: September 5, 2013Applicant: Qualcomm Atheros, Inc.Inventors: Juan Montojo, Andrea Garavaglia, Nicola Varanese, Christian Pietsch
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Patent number: 8510470Abstract: Methods, systems, and apparatuses are described for communicating among stations in a network. A station in the network can determine costs between that station and a headend through a number of other stations. The station can select a low cost path from among the possible paths. Cost data from the determination can be transmitted from the station to other stations in the network for use in selecting low cost paths at those stations.Type: GrantFiled: April 23, 2008Date of Patent: August 13, 2013Assignee: Qualcomm Atheros, Inc.Inventors: Lawrence W. Yonge, III, Srinivas Katar, Manjunath Krishnam
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Publication number: 20130202053Abstract: A system includes a first communication module to be coupled to a first transmission medium for distributing power using a voltage waveform having a first amplitude; and a second communication module to be coupled to a second transmission medium for distributing power using a voltage waveform having a second amplitude different from the first amplitude, the second transmission medium being coupled to the first transmission medium. Each of the first and second communication modules is configured to use signals that propagate between the first and second transmission media.Type: ApplicationFiled: August 3, 2012Publication date: August 8, 2013Applicant: Qualcomm Atheros, Inc.Inventor: James Zyren
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Patent number: 8503480Abstract: Systems and methods for allocating network bandwidth between a plurality of networks. Requests for bandwidth allocation from other networks can be received. A coexistence frame requesting an allocation of bandwidth for a local network can be generated based upon the bandwidth allocation requests received from other networks. The coexistence frame can be transmitted, and utilization of the requested allocation can be delayed by a reservation period.Type: GrantFiled: June 4, 2008Date of Patent: August 6, 2013Assignee: Qualcomm Atheros, Inc.Inventors: Lawrence W. Yonge, III, Srinivas Katar, Richard E. Newman
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Publication number: 20130169316Abstract: A tri-state control mechanism can be implemented for a line driver of a transmitter unit to switch the output impedance of the transmitter unit between a low impedance state in the transmit mode and a high impedance state in the receive mode while minimizing turn-off glitch. It may be determined whether a communication device comprising the transmitter unit is configured in a transmit operating mode or a receive operating mode. If the communication device is configured in the receive operating mode, a first bias voltage can be generated to bias output transistors of the line driver circuit in a sub-threshold state. If the communication device is configured in the transmit operating mode, a second bias voltage can be generated to bias output transistors of the line driver circuit in a saturation state.Type: ApplicationFiled: December 29, 2011Publication date: July 4, 2013Applicant: Qualcomm Atheros, Inc.Inventors: Sang-Min Lee, Michael Peter Mack
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Publication number: 20130170586Abstract: A method of identifying radar in a wireless device includes detecting an event corresponding to receipt of a signal by the wireless device. The event can include an analog to digital converter (ADC) saturation, a radio frequency (RF) saturation, and/or an ADC power high condition. Notably, the gain change in the wireless device is delayed for a first predetermined time period. Data preceding the event for the first predetermined time period can be buffered. A first low-resolution fast Fourier transform (FFT), wherein low-resolution FFTs are referred to as short FFTs, can be performed with the buffered data. The first short FFT can be processed. When results of the processing indicate the signal is radar, the radar can then be identified.Type: ApplicationFiled: May 23, 2012Publication date: July 4, 2013Applicant: Qualcomm Atheros, Inc.Inventors: Tevfik Yucek, Kai Shi, Susinder Rajan Gulasekaran, Richard Melvin Mosko, JR.
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Publication number: 20130155926Abstract: A mechanism can be implemented in a communication unit of a network device to utilize periods of silence encountered in voice communication to conserve power at the network device. In some embodiments, it can be determined that one or more packets of a received RF signal comprise audio data. The communication unit of the network device can determine whether the audio data associated with the one or more packets comprises voice information. The network device can switch to a power save mode based, at least in part, on determining that the audio data associated with the one or more packets does not comprise voice information.Type: ApplicationFiled: December 19, 2011Publication date: June 20, 2013Applicant: Qualcomm Atheros, Inc.Inventors: Yann Ly-Gagnon, Paul J. Husted, Michael Peter Mack
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Patent number: 8467369Abstract: In a network, some data are transmitted between stations during time slots in contention free periods. Selecting the time slots includes collecting timing information at some stations in the network. The timing information indicates the times of existing time slots used by stations whose transmissions can be reliably received by the station collecting the timing information. The timing information is distributed to other stations in the network. A new time slot for transmission between a first and a second station is selected based at least on timing information indicating the times of existing time slots used by stations whose transmissions can be reliably received by at least one of the first and second station.Type: GrantFiled: June 4, 2008Date of Patent: June 18, 2013Assignee: Qualcomm Atheros, Inc.Inventors: Lawrence W. Yonge, III, Srinivas Katar, Shmuel Goldfisher, Erez Geva
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Publication number: 20130148514Abstract: A hybrid positioning system can be implemented to improve location estimation of a wireless network device when reference network devices can have different distance calibration constants. For each of a plurality of positions at which the wireless network device is placed and for each reference network device, a distance between the wireless network device and the reference network device is determined. A first positioning algorithm is executed to determine an intermediate location (corresponding to each position) of the wireless network device and a distance calibration constant for each reference network device based, in part, on a corresponding initial location of the wireless network device. A second positioning algorithm is executed to estimate a subset of the positions of the wireless network device based on the intermediate location (corresponding to the position) of the wireless network device and the distance calibration constant of each of reference network devices.Type: ApplicationFiled: December 8, 2011Publication date: June 13, 2013Applicant: Qualcomm Atheros, Inc.Inventors: Xiaoxin Zhang, Ning Zhang
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Publication number: 20130148556Abstract: A power-save mode for a wireless access point is provided. The wireless access point can determine if other wireless stations are associated with the wireless access point. If there are no associations, then the wireless access point may enter a power-save mode. Associations may be determined by recent associations with the wireless access point or by media access control address activity. In the power-save mode, power may be reduced to at least one area of the wireless access point. In the power-save mode, the wireless access point may stop sending beacon signals. If the wireless access point receives a trigger signal, the wireless access point may leave the power-save mode.Type: ApplicationFiled: December 7, 2011Publication date: June 13, 2013Applicant: Qualcomm Atheros, Inc.Inventors: Sathya Manickam, Vadivel Pitchaimani
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Publication number: 20130128927Abstract: This disclosure is directed to wireless communication systems having a receiver capable of detecting chirping radar pulses. The systems and methods include processing an input signal to obtain a spectral analysis that identifies which frequency exhibits maximum signal magnitude at a given time and determines a rate of change that frequency. By determining that the rate of change is within parameters established by the pulse width range and the chirping bandwidth range, the signal can be identified as a chirping radar pulse. By comparing the rate of change to known characteristics, the signal can be identified as a chirping radar pulse. Suitable characteristics include parameters for the rate of change established by the pulse width range and the chirping bandwidth range and linearity of the rate of change.Type: ApplicationFiled: November 18, 2011Publication date: May 23, 2013Applicant: Qualcomm Atheros, Inc.Inventors: Tevfik Yucek, Richard Mosko, Mahboobul Alem
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Publication number: 20130121221Abstract: A method of saving power in a wireless network can include determining a plurality of stations associated with an AP. The AP can create station groups using group selection logic. Notably, the group selection logic is transparent to the plurality of stations. A plurality of TIMs can then be sent, each TIM allowing only one station group access to a channel during a predetermined time interval, such as a beacon interval. In another method, a station can determine its sleep duration based on at least one of first information from the TIM to generate random sleep duration, second information regarding previous operation of the station, and third information regarding a status of the station. The first, second, and third information can include the number of stations associated with the AP and having buffered data based on the TIM, historical collisions, and power status.Type: ApplicationFiled: September 12, 2012Publication date: May 16, 2013Applicant: Qualcomm Atheros, Inc.Inventors: Sandip HomChaudhuri, Vinod Nagarajan, Anand Rajagopalan, Arunkumar Jayaraman, Yi Zhu, Zhanfeng Jia
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Publication number: 20130114606Abstract: A hybrid network device can implement functionality to indicate the sequence of packets associated with a common packet stream transmitted via a plurality of packet routes and to manage out-of-order packet arrival. In a hybrid communication network, a first network device can determine sequence identifiers associated with a plurality of packets of a packet stream received from a second network device via a plurality of packet routes between the first network device and the second network device. The first network device can detect out-of-order delivery of one or more of the plurality of received packets based, at least in part, on the sequence identifiers associated with the plurality of packets. Consequently, the first network device can re-order at least a subset of the plurality of packets based on the sequence identifiers associated with the plurality of packets.Type: ApplicationFiled: November 3, 2011Publication date: May 9, 2013Applicant: Qualcomm Atheros, Inc.Inventors: Sidney B. Schrum, JR., Richard E. Newman
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Publication number: 20130100850Abstract: A TOA positioning system can be implemented to improve location estimation of a wireless network device. A first subset of a plurality of reference wireless network devices for determining potential locations of the wireless network device and a second subset of the plurality of reference wireless network devices for determining an estimated location of the wireless network device can be selected. The first and the second subsets can be selected based on a plurality of distance measurements and an average distance and associated with each of the plurality of reference wireless network devices. The potential locations of the wireless network device can be determined based on the first subset of the plurality of reference wireless network devices. The estimated location of the wireless network device can be determined from the potential locations of the wireless network device based on the second subset of the plurality of reference wireless network devices.Type: ApplicationFiled: October 21, 2011Publication date: April 25, 2013Applicant: Qualcomm Atheros, Inc.Inventors: Xiaoxin Zhang, Ning Zhang
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Publication number: 20130099870Abstract: This disclosure involves systems for providing an oscillatory circuit having low phase noise featuring arrays of complementary VCO pairs connected in parallel.Type: ApplicationFiled: October 20, 2011Publication date: April 25, 2013Applicant: Qualcomm Atheros, Inc.Inventor: Emmanouil Terrovitis
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Publication number: 20130099763Abstract: This disclosure involves methods and systems for suppressing undesired limit cycles in switching regulators by determining when a limit cycle causes the inductor to charge for a time greater than the clock period and destabilizing such cycles.Type: ApplicationFiled: October 20, 2011Publication date: April 25, 2013Applicant: Qualcomm Atheros, Inc.Inventor: Emmanouil Terrovitis