Patents by Inventor Yanjun Sun

Yanjun Sun 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: 20140023058
    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: Application
    Filed: September 26, 2013
    Publication date: January 23, 2014
    Applicant: Texas Instruments Incorporated
    Inventors: Yanjun Sun, Ariton E. Xhafa, Xiaolin Lu, Josef Peery
  • Publication number: 20140016625
    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: September 17, 2013
    Publication date: January 16, 2014
    Applicant: Texas Instruments Incorporated
    Inventors: Yanjun Sun, Ariton E. Xhafa, Xiaolin Lu, Josef Peery
  • Patent number: 8625510
    Abstract: A wireless device includes a first wireless transceiver and a second wireless transceiver. The first wireless transceiver is configured to communicate via a first wireless network, and includes a first scheduler configured to schedule communication via the first wireless network. The second wireless transceiver is configured to communicate via a second wireless network. The second wireless transceiver includes a second scheduler. The second scheduler is configured to identify a resource allocated to the second wireless transceiver for a transaction via the second wireless network, to identify a portion of the resource used by the second wireless transceiver for the transaction, and to transfer information defining the portion to the first transceiver.
    Type: Grant
    Filed: March 24, 2011
    Date of Patent: January 7, 2014
    Assignee: Texas Instruments Incorporated
    Inventors: Yanjun Sun, Ariton E. Xhafa, Josef Peery, Assaf Sella, Xiaolin Lu
  • Patent number: 8588080
    Abstract: A system and method for using reserved resources in coexisting wireless networks. In one embodiment, a wireless apparatus includes a receiver, a network activity monitor, and a network access scheduler. The receiver is configured to identify a received network reservation message that inhibits access to a first wireless network for an interval defined in the reservation message. The network activity monitor is configured to monitor wireless activity on the first wireless network during the interval. The network access scheduler is configured to determine whether the reservation message prevents conflict of the first wireless network with a coexisting wireless network during the interval, and to schedule, based on a determination that the reservation message prevents conflict with the coexisting wireless network, the wireless apparatus to transmit on the first wireless network during the interval to a wireless device other than a wireless device identified in the reservation message.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: November 19, 2013
    Assignee: Texas Instruments Incorporated
    Inventors: Yanjun Sun, Ariton E. Xhafa, Ramanuja Vedantham, Xiaolin Lu
  • Publication number: 20130301453
    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: Application
    Filed: May 10, 2013
    Publication date: November 14, 2013
    Applicant: Texas Instruments Incorporated
    Inventors: Ariton E. Xhafa, Soon-Hyeok Choi, Yanjun Sun, Leonardo William Estevez
  • Patent number: 8582550
    Abstract: In accordance with at least some embodiments, a system comprises an access point and a station in communication with the access point. The station has at least two network technology subsystems subject to coexistence interference. The station selectively implements bounded Power Save (PS)-Polling (BPS) logic to handle communications between the station and the access point. The BPS logic operates to confine PS-Poll transmissions starts to one of two separate windows during a medium grant duration of the station.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: November 12, 2013
    Assignee: Texas Instruments Incorporated
    Inventors: Yanjun Sun, Ariton E. Xhafa, Xiaolin Lu
  • Publication number: 20130259016
    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: Application
    Filed: March 28, 2013
    Publication date: October 3, 2013
    Applicant: Texas Instruments Incorporated
    Inventors: Ariton E. Xhafa, Soon-Hyeok Choi, Srinath Hosur, Yanjun Sun
  • Publication number: 20130250928
    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: Application
    Filed: March 22, 2013
    Publication date: September 26, 2013
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Soon-Hyeok CHOI, Ariton E. XHAFA, Yanjun SUN
  • Patent number: 8537803
    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: September 15, 2009
    Date of Patent: September 17, 2013
    Assignee: Texas Instruments Incorporated
    Inventors: Yanjun Sun, Ariton E. Xhafa, Xiaolin Lu, Josef Peery
  • Publication number: 20130188670
    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, wherein the control logic is configured to receive, from the first transceiver, a first signal, and cause, in response to the first signal, data transmitted by the first transceiver on the first communication medium as part of a communication session to be transmitted instead by the second transceiver on the second communication medium while the first transceiver continues to receive data as part of the communication session.
    Type: Application
    Filed: July 19, 2012
    Publication date: July 25, 2013
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Yanjun SUN, Gang Xu, Soon-Hyeok Choi, Bhadra Sandeep, Xiaolin Lu, Ariton E. Xhafa, Minghua Fu, Robert Liang, Susan Yim
  • Publication number: 20130188673
    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: Application
    Filed: July 19, 2012
    Publication date: July 25, 2013
    Applicant: 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
  • Publication number: 20130182686
    Abstract: An integrated circuit includes logic configured to determine a communication schedule of a device configured to perform Wi-Fi communications in a first Basic Service Set (BSS) network and in a second BSS network. The logic determines the communication schedule based at least in part on a first BSS network communication load of the device and on a second BSS network communication load of the device. The communication schedule defines the service time allocation of the device in the first BSS network and the service time allocation of the device in the second BSS network. At least one of the first and the second BSS networks is supportive of a peer-to-peer connection.
    Type: Application
    Filed: July 18, 2012
    Publication date: July 18, 2013
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Ramanuja VEDANTHAM, Michael GLIK, Ariton E. XHAFA, Yanjun SUN
  • Patent number: 8477703
    Abstract: A wireless device comprises a first wireless transceiver configured for communication via a first wireless network, a second wireless transceiver configured for communication via a second wireless network; and a scheduler that controls which of the first and second transceivers is granted access to a wireless medium at a given time. When the first wireless transceiver has been granted access to the wireless medium by the scheduler and the first wireless transceiver receives a packet via the first wireless network, the scheduler temporarily grants the second wireless transceiver access to the wireless medium based on the packet indicating that first wireless transceiver is not to use the wireless medium for a period of time.
    Type: Grant
    Filed: June 24, 2010
    Date of Patent: July 2, 2013
    Assignee: Texas Instruments Incorporated
    Inventors: Yanjun Sun, Ariton E. Xhafa, Xiaolin Lu, Assaf Sella
  • Patent number: 8456998
    Abstract: A system composed of a device configured to communicate, using a first wireless protocol, with a node. The system also comprises a processor coupled to the device and configured to determine whether the node operates in a coexistence mode. If the processor determines that the node operates in a coexistence mode then, as a result, the processor determines when the node operates in the first wireless protocol and communicates, by way of the device and without solicitation from the node, with the node when the node operates in the first wireless protocol.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: June 4, 2013
    Assignee: Texas Instruments Incorporated
    Inventors: Ariton E. Xhafa, Yanjun Sun, Xiaolin Lu
  • Patent number: 8458504
    Abstract: A device includes a peer-to-peer group owner processor. The device also includes a memory coupled to the peer-to-peer group owner processor. At least one client associated with the device is a legacy client, and the peer-to-peer group owner processor enters a listening state after a dozing state. The device consumes less power in the listening state than in an awake state.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: June 4, 2013
    Assignee: Texas Instruments Incorporated
    Inventors: Shantanu Kangude, Ariton E. Xhafa, Yanjun Sun, Harshal S. Chhaya
  • Publication number: 20130114298
    Abstract: Embodiments of the present invention disclose a backlight and a display device, to reduce the number of LEDs in a backlight, save costs, while avoiding dark areas appearing on the screen, so as to ensure display effect. The backlight comprises a first light guide plate and at least one light-emitting diode assembly, and the light-emitting diode assembly is located on one side of the first light guide plate. The light-emitting diode assembly comprises a second light guide plate, at least one light-emitting diode and a reflective film, wherein the at least one light-emitting diode is located on at least one side of the second light guide plate, and the reflective film is located on at least one side of the second light guide plate.
    Type: Application
    Filed: July 20, 2012
    Publication date: May 9, 2013
    Applicant: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Zhanchang Bu, Bochang Wang, Fei Wang, Yanjun Sun, Yi Deng, Guangsheng Hua
  • Publication number: 20130028156
    Abstract: A wireless device includes a peer-to-peer group owner processor that handles peer-to-peer transactions, a memory coupled to the peer-to-peer group owner processor, and a power state controller. The power state controller determines an access category of a communication received from a peer-to-peer client and determines a quality of service constraint for the access category. The power state controller also determines a power-save mechanism for the wireless device based on the quality of service constraint and implements the determined power-save mechanism.
    Type: Application
    Filed: July 26, 2011
    Publication date: January 31, 2013
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Ramanuja VEDANTHAM, Ariton E. XHAFA, Yanjun SUN
  • Publication number: 20120327920
    Abstract: Disclosed implementations address the coexistence problem of wireless local area network (WLAN) and Bluetooth Low Energy (BLE) technologies on the same device. For example, an apparatus includes a WLAN controller configured to cause a wireless transceiver module to send and receive packets over a wireless medium. A second controller is coupled to the WLAN controller and also configured to cause the wireless transceiver module to send and receive packet. The second controller informs the WLAN controller that the second controller is going to cause an advertising packet to be transmitted by the wireless transceiver module. The WLAN controller responds by causing a first protection packet to be transmitted by the wireless transceiver module, said first protection packet causes all wireless devices receiving the protection packet to inhibit use of the wireless medium during a timer period which includes the advertising packet. Other embodiments are disclosed as well.
    Type: Application
    Filed: June 19, 2012
    Publication date: December 27, 2012
    Applicant: Texas Instruments Incorporated
    Inventors: Ariton E. XHAFA, Yanjun Sun
  • Publication number: 20120314661
    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: Application
    Filed: August 21, 2012
    Publication date: December 13, 2012
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Yanjun Sun, Ariton E. Xhafa, Xiaolin Lu, Josef Peery
  • Publication number: 20120281533
    Abstract: In at least some embodiments, a communication device includes a transceiver with at least two dissimilar wireless network technology subsystems. The communication device also includes a silencing frame controller to monitor access point rate drop behavior and to adjust a level of silencing frame operations for the communication device based on the monitored access point drop behavior.
    Type: Application
    Filed: May 3, 2012
    Publication date: November 8, 2012
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Ariton E. Xhafa, Yanjun Sun, Ramanuja Vedantham, Assaf Sella, Josef Peery, Xiaolin Lu