Patents by Inventor Ariton E. Xhafa

Ariton E. Xhafa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20160014690
    Abstract: The white list generator identifies wireless sensor nodes that communicate via a wireless sensor network, to identifies time slots assigned for with each of the identified wireless sensor nodes, and to create and maintain a list of the identified wireless sensor nodes and corresponding time slots. The white list generator provides power control information to power a transceiver for reception of transmissions from each identified wireless sensor node based on the identified time slots corresponding to the identified wireless sensor node provided in the list.
    Type: Application
    Filed: September 23, 2015
    Publication date: January 14, 2016
    Inventors: Ariton E. Xhafa, Xiaolin Lu, Jianwei Zhou
  • Patent number: 9203551
    Abstract: A wireless device that tailors communications based on power parameters of the device. In one embodiment, a wireless device includes an energy source, a power monitor coupled to the energy source, a wireless transceiver, and a traffic controller coupled to the power monitor and the wireless transceiver. The power monitor is configured to measure a parameter of the energy source. The wireless transceiver is configured to wirelessly communicate via a wireless network. The traffic controller is configured to set length of packets to be transmitted based on the measured parameter of the energy source.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: December 1, 2015
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Ariton E. Xhafa, Soon-Hyeok Choi, Yanjun Sun, Leonardo William Estevez
  • Patent number: 9204486
    Abstract: A wireless device includes a wireless transceiver configured to transmit to and receive from nodes in a wireless sensor network (WSN) and control logic coupled to the first wireless transceiver. The wireless transceiver transmits a wireless packet to a node in the WSN based on the transmission coinciding with a break in transmissions for a second wireless network. Based on the wireless transceiver being configured to transmit the wireless packets utilizing time synchronized channel hopping, slot frames for packet transmissions in the WSN are time offset so as not to coincide with transmissions made on the second wireless network. Based on the wireless transceiver being configured to transmit the packets utilizing coordinated sampled listening, wake up sequence transmissions for the WSN are time offset so as not to coincide with the transmissions made on the second wireless network.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: December 1, 2015
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Ariton E. Xhafa, Soon-Hyeok Choi, Srinath Hosur, Yanjun Sun
  • Publication number: 20150334728
    Abstract: Embodiments provide a communication device. A device comprises at least two dissimilar network technology subsystems, at least one subsystem of which is lower priority than at least another of the dissimilar subsystems. In some embodiments, a device is able to transmit a silencing frame during a transmission window within a lower priority technology network interval. A transceiver is able to calculate a transmission window to end by at least a duration of time to complete transmission of the silencing frame prior to the beginning of next immediate string of at least one higher priority network technology subsystem interval, and transmit a silencing frame during a lower priority technology network interval during the transmission window.
    Type: Application
    Filed: July 30, 2015
    Publication date: November 19, 2015
    Inventors: Ariton E. Xhafa, Yanjun Sun, Ramanuja Vedantham
  • Patent number: 9182493
    Abstract: Apparatus and method for providing fine timing assistance to global navigation satellite systems (GNSS) via wireless local area network (WLAN). In one embodiment, a method for synchronizing a global navigation satellite system (GNSS) receiver includes receiving, by a wireless device, via a wireless local area network (WLAN), fine time assistance information transmitted by an assisting device connected to the WLAN. A time value of a GNSS clock of the wireless device is adjusted based on the fine time assistance information. Based on the adjusted time value, GNSS codes of a GNSS positioning signal are acquired by the wireless device.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: November 10, 2015
    Assignee: TEXAS INSTRUMENTS INCORPORAED
    Inventors: Deric Wayne Waters, Ariton E. Xhafa, Ramanuja Vedantham
  • Patent number: 9184779
    Abstract: An electronic communication device comprises a first transceiver capable of a bi-directional communication session on a first communication medium; a second transceiver capable of a bi-directional communication session on a second communication medium; and a control logic coupled to the first transceiver and the second transceiver and capable of implementing a convergence layer, wherein the control logic is configured to receive, from the first transceiver, a first signal; and cause, in response to the first signal, data received and transmitted by the first transceiver on the first communication medium as part of a communication session to be received and transmitted instead by the second transceiver on the second communication medium.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: November 10, 2015
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Yanjun Sun, Gang Xu, Soon-Hyeok Choi, Bhadra Sandeep, Xiaolin Lu, Ariton E. Xhafa, Minghua Fu, Robert W. Liang, Susan Yim
  • Patent number: 9172517
    Abstract: A device and method for controlling radio power in a wireless sensor network. A wireless sensor device includes a wireless transceiver, a white list generator, and power control logic. The wireless transceiver is configured to transmit and receive via a wireless sensor network. The white list generator configured to identify wireless sensor nodes that communicate directly with the wireless sensor device via the wireless sensor network, to identify time slots assigned for communication between the wireless sensor device and each of the identified wireless sensor nodes, and to create and maintain a list of the identified wireless sensor nodes and corresponding time slots. The power control logic is configured to power the transceiver for reception of transmissions from each identified wireless sensor node based on the identified time slots corresponding to the identified wireless sensor node provided in the list.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: October 27, 2015
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Ariton E. Xhafa, Xiaolin Lu, Jianwei Zhou
  • Publication number: 20150281778
    Abstract: A system (and method) automatically extends a scheduled recording of a live event past its scheduled end time. The system include includes a content interface to receive program content. The system also includes a user interface to permit a user to schedule a user-selected program content for recording. The user-selected program content has a scheduled start time and a scheduled end time. A program content analyzer may detect a pattern in the user-selected program content. A recording unit may record the user-selected program content and automatically extend the recording past the scheduled end time based on whether the pattern is detected.
    Type: Application
    Filed: April 16, 2014
    Publication date: October 1, 2015
    Inventors: Ariton E. XHAFA, Anuj BATRA
  • Patent number: 9143983
    Abstract: A wireless combination (combo) device is coupled to an antenna for communicating via a first wireless network over a first band. A packet aggregator is coupled to the first wireless transceiver configures a frame aggregated packet for at least a portion of activities on the first wireless network. The frame aggregated packet includes a plurality of data packets and a dummy packet or spoofing so that said frame aggregated packet is extended in time or indicates an extension sufficient to overlap a Tx time interval or Rx time interval for communications occurring over a second wireless network. The first wireless network and said second wireless network are overlapping networks.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: September 22, 2015
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Ariton E Xhafa, Yanjun Sun, Ramanuja Vedantham
  • Patent number: 9131518
    Abstract: Embodiments provide systems and methods to optimize the time when to transmit a silencing frame, and hence, improve the overall network throughput and avoid access point transmission rate fall-back mechanism having an avalanche effect during coexistence of dissimilar wireless network technologies. A device comprises at least two dissimilar network technology subsystems, at least one subsystem of which is lower priority than at least another of the dissimilar subsystems. In some embodiments, a device is able to transmit a silencing frame during a transmission window within a lower priority technology network interval. In other embodiments, a device calculates a transmission window, the transmission window to occur within a lower priority technology network interval, and transmits a silencing frame during the transmission window.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: September 8, 2015
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Ariton E. Xhafa, Yanjun Sun, Ramanuja Vedantham
  • Patent number: 9113340
    Abstract: A system and method for arbitrating channel access in a wireless device including co-located network transceivers are disclosed herein. A wireless device includes a first wireless transceiver and a second wireless transceiver. The first transceiver is configured for operation with a first wireless network. The second transceiver is configured for operation with a second wireless network. The wireless device further includes logic that determines which of the first and second transceivers is enabled to transmit at a given time. The logic causes the first transceiver to transmit a notification signal indicating a time period during which the second transceiver of the wireless device will perform a first wireless transaction, and during which, based on receiving the notification signal, a different wireless device performs a second wireless transaction via the second wireless network without transmitting a notification signal.
    Type: Grant
    Filed: October 14, 2014
    Date of Patent: August 18, 2015
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Yanjun Sun, Ariton E. Xhafa, Xiaolin Lu, Josef Peery
  • Patent number: 9056767
    Abstract: A wireless device that includes an access point (AP) scanner, a transceiver, and a controller coupled to the AP scanner and transceiver. The AP scanner is configured to scan wireless network channels utilized by one or more APs to transmit data packets, probe responses, and beacons. The transceiver is configured to transmit one or more probe requests to the one or more APs and receive one or more probe responses and beacons from the one or more APs. The controller is configured to determine a proximate geographic position of the wireless device based on signal strength of the one or more probe responses and beacons received from the one or more APs. The controller also dynamically adapts a parameter utilized in determining the proximate geographic position of the wireless device.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: June 16, 2015
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Deric Wayne Waters, Ariton E. Xhafa, Mohamed Farouk Mansour
  • Patent number: 9036609
    Abstract: Embodiments provide systems and methods to optimize the time when to receive transmissions from dissimilar wireless networks, and hence, improve the overall network throughput and avoid access point transmission rate fall-back mechanism having an avalanche effect during coexistence of dissimilar wireless network technologies. A receiver comprises at least two dissimilar network technology subsystems and is able to receive transmissions from dissimilar wireless network technology subsystems during a predetermined reception window.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: May 19, 2015
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Ariton E. Xhafa, Yanjun Sun, Ramanuja Vedantham
  • Publication number: 20150124742
    Abstract: Embodiments of the invention provide a method for performing network resource allocation over hybrid networks so that application QoS requirements are met. The hybrid networks are represented as an undirected weighted graph with the communication links as edges irrespective of the communication medium. A QoS-based resource allocation model. Another embodiment further includes utility functions that capture the QoS attributes such as reliability, timeliness, fault-tolerance and lifetime allows determining routes and bandwidth allocation such that the total system utility across the entire network is maximized.
    Type: Application
    Filed: October 23, 2014
    Publication date: May 7, 2015
    Inventors: Arvind Kandhalu Raghu, Ariton E. Xhafa
  • Patent number: 9008052
    Abstract: A network includes an access point using a first protocol and a station using both the first protocol and a second protocol. The station uses the first protocol before a first threshold and a second protocol after the first threshold. A first duration between the second threshold and the first threshold is at least of sufficient length for the station to receive one data packet from the access point and send an acknowledgment. The station transmits to the access point a current clear-to-send packet at a current time during a current exchange based on success or failure of a previous exchange during which a previous clear-to-send packet was transmitted to the access point at a previous time.
    Type: Grant
    Filed: September 26, 2013
    Date of Patent: April 14, 2015
    Assignee: Texas Instruments Incorporated
    Inventors: Yanjun Sun, Ariton E. Xhafa, Xiaolin Lu, Josef Peery
  • Patent number: 8995380
    Abstract: Various techniques are disclosed for assigning timeslots in a multihop wireless network. One such method includes, for each node for uplink timeslot assignments, assigning a higher hop count node to a timeslot that is to occur before all time slots assigned to lower hop count nodes. The method further includes, for each node for downlink timeslot assignments, assigning a lower hop count node to a timeslot that is to occur before all time slots assigned to higher hop count nodes.
    Type: Grant
    Filed: March 22, 2013
    Date of Patent: March 31, 2015
    Assignee: Texas Instruments Incorporated
    Inventors: Soon-Hyeok Choi, Ariton E. Xhafa, Yanjun Sun
  • Patent number: 8964586
    Abstract: Embodiments support stringent Quality of Service (QoS) requirements using adaptations to the existing Bluetooth Low Energy (BLE) protocols. In systems using an enhanced BLE protocol, the master send a poll frame at selected connection intervals or poll intervals. The duration of the connection interval and/or poll interval may be calculated based upon desired QoS parameters, such as delay, target packet error rate (PER), frame error rate (FER), and/or jitter. The master may consider the connection interval lost if a frame is not received from the slave after a predetermined number (m) of consecutive poll frames are transmitted. The value m may be set relatively high to provide more robustness in the system. However, the poll interval may also need to be adjusted to meet QoS requirements. The slave may be required to transmit a packet—that may or may not carry data—in response to every mth received poll.
    Type: Grant
    Filed: August 3, 2012
    Date of Patent: February 24, 2015
    Assignee: Texas Instruments Incorporated
    Inventors: Ariton E. Xhafa, Jin-Meng Ho
  • Publication number: 20150030010
    Abstract: A system and method for arbitrating channel access in a wireless device including co-located network transceivers are disclosed herein. A wireless device includes a first wireless transceiver and a second wireless transceiver. The first transceiver is configured for operation with a first wireless network. The second transceiver is configured for operation with a second wireless network. The wireless device further includes logic that determines which of the first and second transceivers is enabled to transmit at a given time. The logic causes the first transceiver to transmit a notification signal indicating a time period during which the second transceiver of the wireless device will perform a first wireless transaction, and during which, based on receiving the notification signal, a different wireless device performs a second wireless transaction via the second wireless network without transmitting a notification signal.
    Type: Application
    Filed: October 14, 2014
    Publication date: January 29, 2015
    Inventors: Yanjun Sun, Ariton E. Xhafa, Xiaolin Lu, Josef Peery
  • Publication number: 20150016393
    Abstract: Embodiments provide systems and methods to optimize the time when to receive transmissions from dissimilar wireless networks, and hence, improve the overall network throughput and avoid access point transmission rate fall-back mechanism having an avalanche effect during coexistence of dissimilar wireless network technologies. A receiver comprises at least two dissimilar network technology subsystems and is able to receive transmissions from dissimilar wireless network technology subsystems during a predetermined reception window.
    Type: Application
    Filed: September 25, 2014
    Publication date: January 15, 2015
    Inventors: Ariton E. Xhafa, Yanjun Sun, Ramanuja Vedantham
  • Patent number: 8924155
    Abstract: Apparatus and methods for scanning for access points (APs) for wireless local area network (WLAN) positioning. In one embodiment a wireless device includes a WLAN positioning system. The WLAN positioning system includes an AP scanner. The AP scanner is configured to determine which WLAN channels are being used by APs proximate to the wireless device. The AP scanner is also configured to scan for AP transmissions only the WLAN channels determined to be used by APs proximate to the wireless device. The AP scanner is further configured to extract signal strength and AP identification information for WLAN positioning from the AP transmissions on the scanned channels.
    Type: Grant
    Filed: September 12, 2011
    Date of Patent: December 30, 2014
    Assignee: Texas Instruments Incorporated
    Inventors: Deric W. Waters, Sthanunathan Ramakrishnan, Ariton E. Xhafa, Jaiganesh Balakrishnan, Tarkesh Pande, Sandeep Kasargod, Saket Thukral